series Ad-41, L5, And L7 Extrusion Handguns - Nordsonemanuals.nordson.com/adhesives/English_Manuals/237567.pdf · Series AD-41, L5, and L7 Extrusion Handguns ... GA 30097 Notice This

Series AD-41, L5, and L7Extrusion Handguns

Customer Product ManualPart 237567G02

Issued 6/10

NORDSON CORPORATION DULUTH, GEORGIA USAwww.nordson.com

This document contains important safety informationBe sure to read and follow all safety information in thisdocument and any other related documentation.

Part 237567G02 � 2010 Nordson CorporationAll rights reserved

For CE Declaration, refer to melter manual.

Nordson Corporation welcomes requests for information, comments, and inquiries about its products. General informationabout Nordson can be found on the Internet using the following address: http://www.nordson.com.

Address all correspondence to:

Nordson CorporationAttn: Customer Service11475 Lakefield Drive

Duluth, GA 30097

Notice

This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1998.No part of this document may be photocopied, reproduced, or translated to another language without the prior written

consent of Nordson Corporation. The information contained in this publication is subject to change without notice.

Trademarks

AccuJet, AeroCharge, Apogee, AquaGuard, Asymtek, Automove, Baitgun, Blue Box, Bowtie, CanWorks, Century, CF, CleanSleeve, CleanSpray, ColorMax,Color-on-Demand, Control Coat, Coolwave, Cross-Cut, cScan+, Dispensejet, DispenseMate, DuraBlue, DuraDrum, Durafiber, DuraPail, Dura-Screen,Durasystem, Easy Coat, Easymove Plus, Ecodry, Econo-Coat, e.DOT, EFD, Emerald, Encore, ESP, e stylized, ETI - stylized, Excel 2000, Fillmaster,

FlexiCoat, Flex-O-Coat, Flow Sentry, Fluidmove, FoamMelt, FoamMix, Fulfill, GreenUV, HDLV, Heli-flow, Horizon, Hot Shot, iControl, iDry, iFlow, Isocoil,Isocore, Iso-Flo, iTRAX, Kinetix, LEAN CELL, Little Squirt, LogiComm, Magnastatic, March, Maverick, MEG, Meltex, Microcoat, Micromark, MicroSet,

Millennium, Mini Squirt, Mountaingate, Nordson, OptiMix, Package of Values, Pattern View, PermaFlo, Porous Coat, PicoDot, PowderGrid, Powderware,Precisecoat, PRIMARC, Printplus, Prism, ProBlue, Prodigy, Pro-Flo, ProLink, Pro-Meter, Pro-Stream, RBX, Rhino, Saturn, Saturn with rings, Scoreguard,Seal Sentry, Select Charge, Select Coat, Select Cure, Signature, Slautterback, Smart-Coat, Solder Plus, Spectrum, Speed-Coat, SureBead, Sure Clean,Sure Coat, Sure-Max, Sure Wrap, Tracking Plus, TRAK, Trends, Tribomatic, TrueBlue, TrueCoat, Ultra, UpTime, u-TAH, Vantage, VersaBlue, Versa-Coat,

VersaDrum, VersaPail, Versa-Screen, Versa-Spray, Watermark, and When you expect more. are registered trademarks of Nordson Corporation.

Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, AltaBlue, AltaSlot, Alta Spray, AquaCure, ATS, Auto-Flo, AutoScan, Axiom, Best Choice, Blue Series, Bravura, CanPro+,Champion, Check Mate, ClassicBlue, Classic IX, Clean Coat, Cobalt, Controlled Fiberization, Control Weave, ContourCoat,

CPX, cSelect, Cyclo-Kinetic, DispensLink, Drop Cure, Dry Cure, DuraBraid, DuraCoat, DuraPUR, Easy Clean, EasyOn, EasyPW, Eclipse, e.dot+,E-Nordson, Equalizer, EquiBead, FillEasy, Fill Sentry, FlowCoat, Fluxplus, Get Green With Blue, G-Net, G-Site, iON, Iso-Flex, iTrend, Lacquer Cure,

Maxima, Mesa, MicroFin, MicroMax, Mikros, MiniBlue, MiniEdge, Minimeter, MonoCure, Multifill, MultiScan, Myritex, Nano, OmniScan, OptiStroke,Partnership+Plus, PatternJet, PatternPro, PCI, Pinnacle, Plasmod, Powder Pilot, Powder Port, Powercure, Process Sentry, Pulse Spray, Quad Cure,

Ready Coat, RediCoat, Royal Blue, Select Series, Sensomatic, Shaftshield, SheetAire, Smart, SolidBlue, Spectral, Spectronic, SpeedKing, Spray Works,Summit, SureFoam, Sure Mix, SureSeal, Swirl Coat, TAH, ThruWave, TinyCure, Trade Plus, Trilogy, Ultra FoamMix, UltraMax, Ultrasaver, Ultrasmart,

Universal, ValueMate, Versa, Vista, Web Cure, and 2 Rings (Design) are trademarks of Nordson Corporation.

Designations and trademarks stated in this document may be brands that, when used by third parties for their own purposes, could lead to violation of the owners’ rights.

Loctite is a registered trademark of Loctite Corporation.Viton is a registered trademark of DuPont Dow Elastomers. L.L.C.

Table of Contents i

Part 237567G02� 2010 Nordson Corporation

Table of Contents

Safety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Alert Symbols 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Responsibilities of the Equipment Owner 2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Information 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instructions, Requirements, and Standards 2. . . . . . . . . . . . . . . . . . . . . . User Qualifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applicable Industry Safety Practices 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intended Use of the Equipment 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instructions and Safety Messages 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Practices 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Practices 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance and Repair Practices 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment Safety Information 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Shutdown 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Safety Warnings and Cautions 7. . . . . . . . . . . . . . . . . . . . . . . . . . Other Safety Precautions 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First Aid 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Labels and Tags 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Series AD-41 Handguns 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Series L5 Handguns 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Series L7 Handguns 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking and Inspection 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect the Handgun to the Hose 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AD-41 Handguns 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L5 and L7 Handguns 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shutdown 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Daily Maintenance Procedure 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weekly Nozzle Cleaning 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contentsii

Part 237567G02 � 2010 Nordson Corporation

Troubleshooting 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Procedures 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Data 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AD-41 Handguns 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L5 Handguns 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L7 Handguns 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Relieving System Pressure 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the Electrical Assembly on Bottom-Feed Handguns 38. . . . . . . .

Remove the Electrical Assembly 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install the Electrical Assembly 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Electrical Assembly on Top-Feed Handguns 42. . . . . . . . . . . Remove the Electrical Assembly 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install the Electrical Assembly 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing an RTD 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing a Heater Cartridge 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the Trigger Electrical Switch 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the Packing Cartridge 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remove the Packing Cartridge 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install the Packing Cartridge 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjusting the Trigger 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjusting the Trigger Electrical Switch 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing an Existing Handgun 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remove the Existing Handgun 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Install the Replacement Handgun 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Check for Leaks 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Restart the System 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts Lists 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top-Feed Handgun Parts 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bottom-Feed Handgun Parts 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adapters 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Extrusion Nozzles 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Male-Threaded Standard-Engagement Nozzles 71. . . . . . . . . . . . . . . . . . . Male-Threaded Extended-Engagement Nozzles 71. . . . . . . . . . . . . . . . . . . Male-Threaded Extended-Engagement Nozzles (LBS Handgun Only) 71

Recommended Spare Parts and Supplies 72. . . . . . . . . . . . . . . . . . . . . . . . . .

Series AD-41, L5, and L7 Extrusion Handguns 1


Series AD-41, L5, and L7 ExtrusionHandguns

Safety Read this section before using the equipment. This section containsrecommendations and practices applicable to the safe installation,operation, and maintenance (hereafter referred to as “use”) of the productdescribed in this document (hereafter referred to as “equipment”). Additionalsafety information, in the form of task-specific safety alert messages,appears as appropriate throughout this document.

WARNING! Failure to follow the safety messages, recommendations, andhazard avoidance procedures provided in this document can result inpersonal injury, including death, or damage to equipment or property.

Safety Alert Symbols The following safety alert symbol and signal words are used throughout thisdocument to alert the reader to personal safety hazards or to identifyconditions that may result in damage to equipment or property. Comply withall safety information that follows the signal word.

WARNING! Indicates a potentially hazardous situation that, if not avoided,can result in serious personal injury, including death.

CAUTION! Indicates a potentially hazardous situation that, if not avoided,can result in minor or moderate personal injury.

CAUTION! (Used without the safety alert symbol) Indicates a potentiallyhazardous situation that, if not avoided, can result in damage to equipmentor property.

Series AD-41, L5, and L7 Extrusion Handguns2


Responsibilities of the Equipment Owner Equipment owners are responsible for managing safety information,ensuring that all instructions and regulatory requirements for use of theequipment are met, and for qualifying all potential users.

Safety Information � Research and evaluate safety information from all applicable sources,

including the owner-specific safety policy, best industry practices,governing regulations, material manufacturer’s product information, andthis document.

� Make safety information available to equipment users in accordancewith governing regulations. Contact the authority having jurisdiction forinformation.

� Maintain safety information, including the safety labels affixed to theequipment, in readable condition.

Instructions, Requirements, and Standards � Ensure that the equipment is used in accordance with the information

provided in this document, governing codes and regulations, and bestindustry practices.

� If applicable, receive approval from your facility’s engineering or safetydepartment, or other similar function within your organization, beforeinstalling or operating the equipment for the first time.

� Provide appropriate emergency and first aid equipment.

� Conduct safety inspections to ensure required practices are beingfollowed.

� Re-evaluate safety practices and procedures whenever changes aremade to the process or equipment.



User Qualifications Equipment owners are responsible for ensuring that users:

� receive safety training appropriate to their job function as directed bygoverning regulations and best industry practices

� are familiar with the equipment owner’s safety and accidentprevention policies and procedures

� receive, equipment- and task-specific training from another qualifiedindividual

NOTE: Nordson can provide equipment-specific installation,operation, and maintenance training. Contact your Nordsonrepresentative for information

� possess industry- and trade-specific skills and a level of experienceappropriate to their job function

� are physically capable of performing their job function and are notunder the influence of any substance that degrades their mentalcapacity or physical capabilities

Applicable Industry Safety Practices The following safety practices apply to the use of the equipment in themanner described in this document. The information provided here is notmeant to include all possible safety practices, but represents the best safetypractices for equipment of similar hazard potential used in similar industries.

Intended Use of the Equipment � Use the equipment only for the purposes described and within the limits

specified in this document.

� Do not modify the equipment.

� Do not use incompatible materials or unapproved auxiliary devices.Contact your Nordson representative if you have any questions onmaterial compatibility or the use of non-standard auxiliary devices.



Instructions and Safety Messages � Read and follow the instructions provided in this document and other

referenced documents.

� Familiarize yourself with the location and meaning of the safety warninglabels and tags affixed to the equipment. Refer to Safety Labels andTags at the end of this section.

� If you are unsure of how to use the equipment, contact your Nordsonrepresentative for assistance.

Installation Practices � Install the equipment in accordance with the instructions provided in this

document and in the documentation provided with auxiliary devices.

� Ensure that the equipment is rated for the environment in which it will beused and that the processing characteristics of the material will notcreate a hazardous environment. Refer to the Material Safety DataSheet (MSDS) for the material.

� If the required installation configuration does not match the installationinstructions, contact your Nordson representative for assistance.

� Position the equipment for safe operation. Observe the requirements forclearance between the equipment and other objects.

� Install lockable power disconnects to isolate the equipment and allindependently powered auxiliary devices from their power sources.

� Properly ground all equipment. Contact your local building codeenforcement agency for specific requirements.

� Ensure that fuses of the correct type and rating are installed in fusedequipment.

� Contact the authority having jurisdiction to determine the requirement forinstallation permits or inspections.

Operating Practices � Familiarize yourself with the location and operation of all safety devices

and indicators.

� Confirm that the equipment, including all safety devices (guards,interlocks, etc.), is in good working order and that the requiredenvironmental conditions exist.

� Use the personal protective equipment (PPE) specified for each task.Refer to Equipment Safety Information or the material manufacturer’sinstructions and MSDS for PPE requirements.

� Do not use equipment that is malfunctioning or shows signs of apotential malfunction.



Maintenance and Repair Practices � Perform scheduled maintenance activities at the intervals described in

this document.

� Relieve system hydraulic and pneumatic pressure before servicing theequipment.

� De-energize the equipment and all auxiliary devices before servicing theequipment.

� Use only new Nordson-authorized refurbished or replacement parts.

� Read and comply with the manufacturer’s instructions and the MSDSsupplied with equipment cleaning compounds.

NOTE: MSDSs for cleaning compounds that are sold by Nordson areavailable at www.nordson.com or by calling your Nordsonrepresentative.

� Confirm the correct operation of all safety devices before placing theequipment back into operation.

� Dispose of waste cleaning compounds and residual process materialsaccording to governing regulations. Refer to the applicable MSDS orcontact the authority having jurisdiction for information.

� Keep equipment safety warning labels clean. Replace worn or damagedlabels.

Equipment Safety Information This equipment safety information is applicable to the following types ofNordson equipment:

� hot melt and cold adhesive application equipment and all relatedaccessories

� pattern controllers, timers, detection and verification systems, and allother optional process control devices



Equipment Shutdown To safely complete many of the procedures described in this document, theequipment must first be shut down. The level of shut down required variesby the type of equipment in use and the procedure being completed. If required, shut down instructions are specified at the start of theprocedure. The levels of shut down are:

Relieving System Hydraulic Pressure

Completely relieve system hydraulic pressure before breaking any hydraulicconnection or seal. Refer to the melter-specific product manual forinstructions on relieving system hydraulic pressure.

De-energizing the System

Isolate the system (melter, hoses, guns, and optional devices) from allpower sources before accessing any unprotected high-voltage wiring orconnection point.

1. Turn off the equipment and all auxiliary devices connected to theequipment (system).

2. To prevent the equipment from being accidentally energized, lock andtag the disconnect switch(es) or circuit breaker(s) that provide inputelectrical power to the equipment and optional devices.

NOTE: Government regulations and industry standards dictate specificrequirements for the isolation of hazardous energy sources. Refer to theappropriate regulation or standard.

Disabling the Guns

NOTE: Adhesive dispensing guns are referred to as “applicators” in someindustries.

All electrical or mechanical devices that provide an activation signal to theguns, gun solenoid valve(s), or the melter pump must be disabled beforework can be performed on or around a gun that is connected to apressurized system.

1. Turn off or disconnect the gun triggering device (pattern controller, timer,PLC, etc.).

2. Disconnect the input signal wiring to the gun solenoid valve(s).

3. Reduce the air pressure to the gun solenoid valve(s) to zero; thenrelieve the residual air pressure between the regulator and the gun.



General Safety Warnings and Cautions Table 1 contains the general safety warnings and cautions that apply toNordson hot melt and cold adhesive equipment. Review the table andcarefully read all of the warnings or cautions that apply to the type ofequipment described in this manual.

Equipment types are designated in Table 1 as follows:

HM = Hot melt (melters, hoses, guns, etc.)

PC = Process control

CA = Cold adhesive (dispensing pumps, pressurized container, andguns)

Table 1 General Safety Warnings and Cautions

EquipmentType Warning or Caution

HM

WARNING! Hazardous vapors! Before processing any polyurethanereactive (PUR) hot melt or solvent-based material through acompatible Nordson melter, read and comply with the material’sMSDS. Ensure that the material’s processing temperature andflashpoints will not be exceeded and that all requirements for safehandling, ventilation, first aid, and personal protective equipment aremet. Failure to comply with MSDS requirements can cause personalinjury, including death.

HM

WARNING! Reactive material! Never clean any aluminum componentor flush Nordson equipment with halogenated hydrocarbon fluids.Nordson melters and guns contain aluminum components that mayreact violently with halogenated hydrocarbons. The use ofhalogenated hydrocarbon compounds in Nordson equipment cancause personal injury, including death.

HM, CAWARNING! System pressurized! Relieve system hydraulic pressurebefore breaking any hydraulic connection or seal. Failure to relievethe system hydraulic pressure can result in the uncontrolled release ofhot melt or cold adhesive, causing personal injury.

Continued...



General Safety Warnings and Cautions (contd)

Table 1 General Safety Warnings and Cautions (contd)


HMWARNING! Molten material! Wear eye or face protection, clothing thatprotects exposed skin, and heat-protective gloves when servicingequipment that contains molten hot melt. Even when solidified, hotmelt can still cause burns. Failure to wear appropriate personalprotective equipment can result in personal injury.

HM, PC

WARNING! Equipment starts automatically! Remote triggeringdevices are used to control automatic hot melt guns. Before workingon or near an operating gun, disable the gun’s triggering device andremove the air supply to the gun’s solenoid valve(s). Failure to disablethe gun’s triggering device and remove the supply of air to thesolenoid valve(s) can result in personal injury.

HM, CA, PC

WARNING! Risk of electrocution! Even when switched off andelectrically isolated at the disconnect switch or circuit breaker, theequipment may still be connected to energized auxiliary devices.De-energize and electrically isolate all auxiliary devices beforeservicing the equipment. Failure to properly isolate electrical power toauxiliary equipment before servicing the equipment can result inpersonal injury, including death.

HM, CA, PC

WARNING! Risk of fire or explosion! Nordson adhesive equipment isnot rated for use in explosive environments and should not be usedwith solvent-based adhesives that can create an explosiveatmosphere when processed. Refer to the MSDS for the adhesive todetermine its processing characteristics and limitations. The use ofincompatible solvent-based adhesives or the improper processing ofsolvent-based adhesives can result in personal injury, including death.

Continued...



Table 1 General Safety Warnings and Cautions (contd)


HM, CA, PCWARNING! Allow only personnel with appropriate training andexperience to operate or service the equipment. The use of untrainedor inexperienced personnel to operate or service the equipment canresult in injury, including death, to themselves and others and candamage to the equipment.

HMCAUTION! Hot surfaces! Avoid contact with the hot metal surfaces ofguns, hoses, and certain components of the melter. If contact can notbe avoided, wear heat-protective gloves and clothing when workingaround heated equipment. Failure to avoid contact with hot metalsurfaces can result in personal injury.

HM

CAUTION! Some Nordson melters are specifically designed toprocess polyurethane reactive (PUR) hot melt. Attempting to processPUR in equipment not specifically designed for this purpose candamage the equipment and cause premature reaction of the hot melt.If you are unsure of the equipment’s ability to process PUR, contactyour Nordson representative for assistance.

HM, CA

CAUTION! Before using any cleaning or flushing compound on or inthe equipment, read and comply with the manufacturer’s instructionsand the MSDS supplied with the compound. Some cleaningcompounds can react unpredictably with hot melt or cold adhesive,resulting in damage to the equipment.

HM

CAUTION! Nordson hot melt equipment is factory tested withNordson Type R fluid that contains polyester adipate plasticizer.Certain hot melt materials can react with Type R fluid and form a solidgum that can clog the equipment. Before using the equipment,confirm that the hot melt is compatible with Type R fluid.



Other Safety Precautions � Do not use an open flame to heat hot melt system components.

� Check high pressure hoses daily for signs of excessive wear, damage,or leaks.

� Never point a dispensing handgun at yourself or others.

� Suspend dispensing handguns by their proper suspension point.

First AidIf molten hot melt comes in contact with your skin:

1. Do NOT attempt to remove the molten hot melt from your skin.

2. Immediately soak the affected area in clean, cold water until the hot melthas cooled.

3. Do NOT attempt to remove the solidified hot melt from your skin.

4. In case of severe burns, treat for shock.

5. Seek expert medical attention immediately. Give the MSDS for the hotmelt to the medical personnel providing treatment.



This page intentionally left blank.



Safety Labels and Tags Figure 1 illustrates the location of the product safety labels and tags affixedto the equipment. Table 2 provides an illustration of the hazard identificationsymbols that appear on each safety label and tag, the meaning of thesymbol, or the exact wording of any safety message.

4

1

32

5

Figure 1 Safety labels and tags



Table 2 Safety Labels and Tags

Item Part Description

1. 178475 WARNING: Hot Surface

2. 243352 WARNING: Fire, injury or equipment damage can result ifcleanout materials do not meet the following requirements:

1. Minimum flash point to be 550 �F (288 �C).

2. Liquid and vapor to be non-toxic at use temperature inequipment.

3. Chemical reactions with adhesive and equipment materialsmust not be violently heat producing.

4. Cleanout material must not corrode or otherwise weakenequipment materials.

CAUTION: This equipment is factory tested with Nordson TypeR fluid containing Polyester Adipote plasticizer. Certainadhesives may react with the type R fluid residue to form solidgum which can be difficult to remove.

To avoid equipment damage check with adhesivesupplier regarding compatibility and cleanout procedurebefore putting adhesive into the system.

3. 600103 CAUTION: This unit is equipped with ______ �F presetthermostat. Use only adhesive formulated for application at thistemperature. Before changing adhesive consult instructionmanual for changing operating temperature. Failure to followinstructions may result in personal injury or property damage.

CAUTION: This gun is RTD (resistance temperature detector)controlled. Prior to operation and before changing adhesiveconsult instruction manual for changing operating temperature.Failure to follow instructions may result in personal injury orproperty damage.

4. 600137 WARNING: Disconnect power and remove systempressure before disassembly or maintenance. Failure tofollow these instructions may result in serious personalinjury.

5. 1087000

Tag, warning



Description Compact and lightweight Series AD-41, L5, and L7 extrusion handgunsfeature an ever-cool handle with no heated components or adhesive-flowpaths that cause operator discomfort. Heated handgun components arecompletely enclosed within the exterior gun shell. An impact-resistantmolded shell ensures an extended service life. Handguns feature a360-degree swivel connector to eliminate hose twisting. Figure 2 shows thekey parts of a typical handgun.

1

2

79

5

6

8

34

9

10

Figure 2 Key parts of a typical handgun

1. Nozzle2. Gun body3. Ground screw4. Trigger linkage

5. Trigger lock6. Trigger7. Gun handle shells

8. Electrical assembly9. Swivel connector (part of gun

body on L5 and L7 handguns)10. Fusible link (L5 handguns only)



Series AD-41 Handguns AD-41 handguns are available in bottom- and top-feed configurations. Bothare available in 120V and 240V models. The AD-41H is a bottom-feed,120V handgun. Optional features include a down-apply extrusion nozzle fortop-feed applications and a spray air system that triggers external aircontrol.

AD-41 handguns use a RTD (resistance temperature detector) sensor. RTDsensing provides precise temperature control by reducing temperaturefluctuations that affect flow and cause char formation. A wide operatingrange of 65−230 �C (150−450 �F) offers additional application versatility.

CAUTION! AD-41 handguns must not be used with L5/L7 handgun hosesand L5/L7 handguns must not be used with AD-41 handgun hoses.

Series L5 Handguns L5 handguns have extrusion, swirl, and spray capability and are available intop-feed or bottom-feed configurations. L5 handguns are 120V or 240V with80 W heaters. Features include a ball swivel, trigger safety, pump motorswitch, quick-disconnect electrical cable, and fusible link (forovertemperature protection).

Extrusion nozzles used on L5 handguns must be ordered separately. L5handguns can be configured in the field for swirl or fan spray applicationswith the use of an adapter and the addition of an air line kit for the supplyhose. Down-apply adapters are also available for swirl or extrusionapplications. Adapters are easily added and can be installed withoutdisassembling the handgun. The L5 handgun has no selectable options.

A switch located inside the L5 handgun shell turns the pump motor and aircontrol system on and off. As with AD-41 handguns, L5 handguns use aRTD for precise temperature control.

NOTE: The melter must be compatible for use with the remote pumpoperation feature.

CAUTION! L5 handguns must not be used with AD-41 or L7 handgunhoses.



Series L7 Handguns L7 handguns and hoses are one temperature zone, with the handgunheater wired in parallel with the hose heater. Accordingly, the L7 handgundoes not have a RTD. Temperature is controlled at the hose setting throughthe melter control system.

L7 handguns are available with a switch inside the handgun shell that turnsthe pump motor and air control system on and off.

NOTE: The melter must be compatible with the remote switch operation ofthe handgun.

CAUTION! L7 handguns must not be used with AD-41 or L5 handgunhoses.

Specifications

Table 3 AD-41 Handgun Specifications

Parameter Value

Type of pattern Bead

Operating temperature 230 �C (450 �F) maximum

Hydraulic pressure 103.4 bar (1,500 psi) maximum

Electrical requirements 100; 115; 120; 200; 220/240 VAC, 50/60 Hz

Nozzle orifice diameters:

� standard 0.51 to 2.36 mm (0.020 to 0.093 in.)

� extended 0.42 to 3.96 mm (0.017 to 0.156 in.)

Weight 0.64 kg (1.4 lb)

Dimensions:

� Length 187.5 mm (7.38 in.)

� Depth 160.3 mm (6.31 in.)

� Width 41.1 mm (1.62 in.)



Table 4 L5 Handgun Specifications

Parameter Value

Input voltage 120 VAC, single-phase

Operating temperature 37−230 �C (100−450 �F)

Hydraulic pressure 14 bar (200 psi) maximum

Power requirements 80 W

Storage temperature -30−70 �C (-22−158 �F)

Warm-up time 30−45 minutes

Adhesive viscosity 10,000 cps maximum

Temperature control RTD in handgun


RTD type 100 ohm platinum

Motor switch relay Source power: 240 VACMaximum switching power: 3000WMaximum switching voltage: 400 VAC

Dimensions:

� Length 228.6 mm (9.0 in.)

� Depth 40.6 mm (1.6 in.)

� Width 165.1 mm (6.5 in.)

Table 5 L7 Handgun Specifications

Parameter Value

Input voltage 120 or 240 VAC

Operating temperature 37−230 �C (100−450 �F)

Hydraulic pressure 10.3 bar (150 psi) maximum

Power requirements 40 W

Storage temperature -30−70 �C (-22−158 �F)

Warm-up time 30−45 minutes

Adhesive viscosity 25,000 cps maximum

Temperature control The temperature of the handgun is thetemperature of the hose (set through themelter control system).


Dimensions:

� Length 228.6 mm (9.0 in.)

� Depth 40.6 mm (1.6 in.)

� Width 165.1 mm (6.5 in.)



Installation WARNING! Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.

Unpacking and Inspection Handguns are shipped fully assembled.

CAUTION! Take care to prevent equipment damage during unpacking.

After unpacking the handgun, note the following:

1. If there is a discrepancy between the order and equipment received,contact Nordson.

2. Check the handgun and hose for dents, scratches, or other physicaldamage. If there is any physical damage, contact Nordson.

3. Remove foreign material in the service-block air and fluid ports.



Connect the Handgun to the Hose

WARNING! Hot! Risk of burns. Wear heat-protective clothing, safetygoggles, and heat-protective gloves.

AD-41 Handguns 1. See Figure 3. Use two wrenches to attach the hydraulic hose fitting to

the swivel connector.

ÎÎ

Figure 3 Connect a hose to an AD-41 handgun

2. Connect the hose cordset to the handgun and hand-tighten theconnector swivel nut. The connectors are keyed for proper alignment.

3. Refer to the melter manual to connect the hose to the melter.

ÎÎÎÎÎÎ

Figure 4 Connect a hose cordset to an AD-41 handgun



L5 and L7 Handguns 1. See Figures 4 and 5. Compress the hose fitting cover (5) to expose the

swivel connector (4).

2. Attach the hydraulic hose fitting (3) to the swivel connector. Use twowrenches to ensure a tight connection.

3. Connect the hose cordset (2) to the handgun electrical connecter (1)and hand-tighten the connector swivel nut. The connectors are keyed forproper alignment.

4. Refer to the melter manual to connect the hose to the melter.

1

2

5

4

3

0960

051

Figure 5 Connect a hose to an L5 or L7 handgun

1. Handgun electrical connector2. Hose cordset3. Hose fitting

4. Swivel connector5. Hose fitting cover



Operation WARNING! Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.

Preparation

WARNING! Do not operate the hot melt system at pressures capable ofcausing the adhesive to extrude more than 46 cm (18 in.) from the nozzletip when the handgun is fired in the horizontal position. Doing so can harmpersonnel or equipment and cause poor pattern control.

NOTE: The recommended adhesive pump pressure range is 24−48 bar(350−700 psi).

The following factors can cause adhesive to project beyond the maximumrecommended projection limit:

� increasing pump pressure� increasing the melter temperature settings� changing the adhesive consistency� changing to a smaller size nozzle orifice� changing the hose length

WARNING! Hot! Risk of burns. Wear heat-protective clothing, safetygoggles, and heat-protective gloves. Never point the handgun at anyone.Trigger the handgun only when adhesive is to be applied to a substrate.

WARNING! Do not operate the handgun with its pivot sleeve shells orhandles removed or damaged. The handgun contains voltages that can befatal.

CAUTION! Do not swivel or trigger the handgun while it is cold. This candamage the handgun.

CAUTION! Take care when swiveling the handgun. Aggressive motion ofthe hose and handle can damage the handgun.



Preparation (contd)

1. See Figure 6. Check that the trigger safety is in the locked position (2).

2. Refer to the melter manual to heat the adhesive to operatingtemperature, turn on the melter pump, and adjust the system hydraulicpressure to the required operating pressure.

4203233C

1 2

Figure 6 Trigger safety positions

1. Unlocked position 2. Locked position

Operation


1. See Figure 6. Place the trigger safety in the unlocked position (1).

2. Aim the handgun so the nozzle is pointing at the substrate.

3. Dispense adhesive by squeezing the handgun trigger.

4. Stop dispensing adhesive by releasing the trigger.



Shutdown


1. Place the trigger safety in the locked position. See Figure 6.

2. Relieve system pressure. Refer to Relieving System Pressure underRepair.

3. Place the trigger safety in the unlocked position.

4. Place a waste container capable of withstanding adhesive temperaturesof 230 �C (450 �F) on the floor near the handgun nozzle.

5. Aim the handgun so the nozzle points into the container.

6. Squeeze the trigger and drain adhesive until system hydraulic pressureis relieved and adhesive is removed. Dispose of the drained adhesive asrecommended by your adhesive supplier.

7. Place the trigger safety in the locked position and hang the handgun bythe hole at the top of the handle.

WARNING! Never hang the handgun by its trigger. Hanging the handgun byits trigger can cause accidental discharge, resulting in burns.



Maintenance WARNING! Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.

WARNING! Even when switched off, Nordson melters and guns containelectrical potentials that can cause death. Disconnect and lock out inputpower to the melter main circuit breaker.

WARNING! Attempting any other maintenance procedure than thosedescribed in this section can cause personal injury, handgun damage, orimproper system operation.

CAUTION! Accumulated adhesive can char and cause erratic operation.



Daily Maintenance Procedure NOTE: Nordson Type-R fluid is used to clean adhesive from extrusionsystems. It can be reused and it has an inoffensive odor.

WARNING! Risk of death or serious injury from fire or toxic fumes. Useextreme care in selecting a cleaning fluid other than Nordson Type-R fluid.Cleaning fluids other than Type-R may present a toxic or fire hazard even atroom temperature.


The following items are needed to perform this procedure:

� appropriate protective clothing� cleaning cloth� Nordson Type-R fluid or equivalent

WARNING! Risk of death or serious injury from explosion or fire can occur ifNordson Type-R fluid is heated above or used on surfaces above 245 �C(475 �F).

1. See Figure 6. Place the trigger safety in the locked position.

2. Bring the handgun to operating temperature.

3. Soak a cloth in Nordson Type-R fluid (or equivalent).

4. Wipe adhesive from all exterior handgun and nozzle surfaces with thefluid-soaked cloth.



Weekly Nozzle Cleaning Clean nozzles weekly or as needed. Plant environment and adhesive typeare some factors that can affect cleaning frequency.

The following items are needed to clean the nozzles:

� appropriate protective clothing� cleaning cloth� open-end wrench (size varies depending on nozzle used)� pin-type probe for cleaning the nozzle bore (included in the Nordson

nozzle-cleaning kit)� controlled heating device, such as a small, deep fat fryer;

thermostatically controlled hot plate; or an ultrasonic cleaning device� Nordson Type-R fluid (or equivalent) for soaking the nozzle� slotted scoop or wire basket to remove the nozzle from the Nordson

Type-R fluid

NOTE: A standalone nozzle-cleaning instruction sheet, P/N 1053027, isalso available. Visit emanuals.nordson.com to download technicaldocumentation.


CAUTION! Nozzles can be damaged if an open torch, drill, or broach isused for cleaning. Use only a pin-type probe to clean a nozzle.

1. Relieve system pressure. Refer to Relieving System Pressure underRepair.

2. Disconnect and lock out input power to the melter main circuit breaker.

3. See Figure 6. Place the trigger safety in the locked position.

4. Use an open-end wrench to loosen the nozzle by turning itcounterclockwise.

5. Remove the nozzle.

4203229



WARNING! Risk of death or serious injury from explosion or fire can occur ifNordson Type-R fluid is heated above or used on surfaces above 245 �C(475 �F).

6. Place the nozzle in a container filled with Nordson Type-R fluid (orequivalent) and heat the container to the adhesive’s melting point. Use acontrolled heating source, such as a small, deep fat fryer; or athermostatically controlled hot plate.

NOTE: Another method for cleaning nozzles is to place the parts in anultrasonic cleaner filled with Nordson Type-R fluid.

7. After the charred adhesive is removed from the nozzle, use a slottedscoop or wire basket to remove the nozzle from the container.

NOTE: To reuse Nordson Type-R Fluid, use either of the methodsbelow:

- allow the fluid to cool; then skim the adhesive from the fluid anddispose of the adhesive as instructed by its manufacturer. Return theremaining fluid to its original container and store appropriately.

- allow the fluid to cool, place a strainer over the fluid’s originalcontainer to remove adhesive from the fluid as you pour the fluidback into the container and store appropriately. Dispose of adhesiveas instructed by its manufacturer.

Figure 7 Cleaning a nozzle witha pin-type probe

CAUTION! Nozzles can be damaged if an open torch, drill, or broach isused for cleaning. Use only a pin-type probe to clean a nozzle.

8. See Figure 7. Clean the nozzle bore using a pin-type probe, and wipewith a cloth soaked in Nordson Type-R fluid as needed.

9. Reattach the nozzle to the handgun. Do not over tighten the nozzle.

10. Restore the system to normal operation by following the startupprocedures in the melter manual.



Troubleshooting WARNING! Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.

These procedures cover only the most common problems. If problemscannot be resolved by using the information provided, contact a Nordsonrepresentative.

Problem Page

1. No adhesive flows from handgun module 29

2. Handgun overheats 30

3. Handgun fails to heat or underheats 30

4. Handgun will not swivel 31

5. Nozzle leaks 31

6. Handgun fails to shut off 31

7. Adhesive leaks from handle 31

8. Adhesive leaks from swivel fitting 31



Troubleshooting Procedures

Problem Possible Cause Corrective Action

1. No adhesiveflows fromhandgunmodule

Adhesive level low Add adhesive.

No input power Verify input power connection and thatall circuit breakers are switched ON.

Melter temperature settings too low Adjust (refer to the melter manual).

Hose temperature setting too low Adjust (refer to the melter manual).

System not at operating temperature Verify that the READY light is on and theadhesive or sealant is melted. Bring thesystem to operating temperature.

Insufficient air pressure to piston pump(piston pump melters only)

Verify air pressure by flushing the filter(refer to the melter manual).

Melter pump motor not operational (gearpump melters only)

Verify motor operation (refer to themelter manual).

Failed heater fuse in melter Disconnect and lockout electrical powerto the melter. Check the fuse andreplace if needed (refer to the meltermanual).

Failed hose Disconnect and lockout electrical powerto the melter. Check the hose heatercold resistance against the suggestedrange given in the hose manual.Replace if needed.

Hose clogged Clean or replace.

Nozzle clogged (except zero-cavity) Clean the nozzle (refer to WeeklyNozzle Cleaning under Maintenance).Replace if defective.

Triggering device dirty or faulty Check the trigger adjustment (refer toAdjusting the Trigger or Adjusting theTrigger Electrical Switch under Repair).Clean or replace as needed.

Continued on next page



Troubleshooting Procedures (contd)


Handgun temperature setting too low Adjust (refer to the melter manual).Verify that the handgun is operational(refer to problem 3.)

2. Handgunoverheats

Hose temperature setting too high Adjust (refer to the melter manual).

Handgun temperature setting too high Adjust (refer to the melter manual).

Shorted RTD (melter should shut down) Test the RTD. Replace if defective (referto the appropriate procedure forreplacing the electrical assembly underRepair).

3. Handgun failsto heat orunderheats

No input power Verify input power connection and thatall circuit breakers are switched ON.

Electrical problem in melter or hose, orbroken connection in heater or sensorcircuit

Check the melter, hose, and all electricalcircuits for problems, such as an opencircuit or a fuse or control relay failure(refer to the melter manual).

Temperature setting too low Adjust (refer to the melter manual).

Failed heater cartridge (open or short) Test resistance. For electrical diagramsand resistance data, refer to ElectricalData later in this section. If resistance isoutside the appropriate range, replace(refer to Replacing a Heater Cartridgeunder Repair).

Failed fusible link (L5 handguns) If the handgun has a fusible link, checkfor an open circuit at pins 2 and 3 of thehandgun electrical connection. If thecircuit is open and the heater is okay,replace the fusible link. Refer as neededto Electrical Data for wiring diagramsand resistance charts.

Failed RTD (open or short) Check continuity. If continuity exists,check resistance by comparing with theappropriate temperature range. Refer toElectrical Data later in this section forwiring diagrams and resistance charts.Replace the RTD if needed.

Continued on next page




4. Handgun willnot swivel

Swivel fitting binding Check the swivel fitting for binding, andreplace if needed.

System not at operating temperature Verify that the READY light is on and theadhesive or sealant is melted. If not,allow the system to reach operatingtemperature.

Melter hydraulic pressure too high(L5/L7 handguns only)

Check the melter pressure setting andadjust as necessary.

5. Nozzle leaks Triggering device improperly adjusted Check trigger adjustment (refer toAdjusting the Trigger or Adjusting theTrigger Electrical Switch under Repair).Clean or replace.

6. Handgun failsto shut off

Triggering device dirty or faulty Check trigger adjustment (refer toAdjusting the Trigger or Adjusting theTrigger Electrical Switch under Repair).Clean or replace.

Foreign material lodged between seatand packing cartridge ball tip

Check nozzle assembly (refer toReplacing the Packing Cartridge underRepair). Clean or replace.

Packing cartridge failed Check packing cartridge for damage andreplace if needed (refer to Replacing thePacking Cartridge under Repair).

7. Adhesive leaksfrom handle

Damaged seal ring Check for damage and replace ifneeded (refer to Replacing the PackingCartridge under Repair)

Worn or damaged packing cartridgeCartridge under Repair).

8. Adhesive leaksfrom swivelfitting

Damaged swivel fitting Check the handgun swivel connection.Tighten or replace.



Electrical Data

AD-41 Handguns

Table 6 AD-41 Handgun Heater Resistance Data

Handgun Model Handgun Voltage Resistance

AD-41 120V 122−144 ohms

AD-41 240V 489−576 ohms

AD-41H 120V 148−181 ohms

4203277A

3

6

9

1

4

7

Heater

Switch

NOC

Ground

2

5

8

RTD

3

6

9

1

4

7

Heater

Switch

NOC

Ground

2

5

8

RTD

120V AD-41 Handguns 240V AD-41 Handguns

Figure 8 AD-41 handgun wiring diagram



4207045B

250

240

230

220

210

200

190

180

170

160

150

140

130

RE

SIS

TAN

CE

IN O

HM

S

310

300

290

280

270

260

250

240

230

350

340

330

320

RE

SIS

TAN

CE

IN O

HM

S

TEMPERATURE

TEMPERATURE

16 �C 23 �C 30 �C 37 �C 44 �C 52 �C 59 �C 66 �C 73 �C 81 �C 88 �C 95 �C 102 �C 109 �C 117 �C60 �F 73 �F 86 �F 99 �F 112 �F 125 �F 138 �F 151 �F 164 �F 177 �F 190 �F 203 �F 216 �F 229 �F 242 �F

268 �F 281 �F 294 �F 307 �F 320 �F 333 �F 346 �F 359 �F 372 �F 411 �F 424 �F 437 �F 450 �F385 �F 398 �F131 �C 138 �C 146 �C 153 �C 160 �C 167 �C 174 �C 182 �C 189 �C 196 �C 203 �C 211 �C 218 �C 225 �C 232 �C

Figure 9 RTD resistance vs temperature for AD-41 handguns with a nickel RTD



AD-41 Handguns (contd)

220

210

200

190

180

170

160

150

140

130

120

110

100

RE

SIS

TA

NC

E I

N O

HM

S

280

270

260

250

240

230

220

210

200

320

310

300

290

RE

SIS

TA

NC

E I

N O

HM

S

TEMPERATURE

TEMPERATURE



Figure 10 RTD resistance vs temperature for handguns with a platinum RTD (AD-41H and L5 handguns only)

Note: Some RTD resistance data for L5 handguns is also provided in Table 7.

1

4

7

3

6

9

Heater

Switch

RT

D

NO C

Ground

Fusable link

2

5

8

1

4

7

3

6

9

Heater

SwitchNO C

Ground

2

5

8



L5 Handguns

Table 7 L5 Handgun RTD Resistance Data

Temperature of RTD Resistance

0 �C (32 �F) 100 ohms

38 �C (100 �F) 115 ohms

66 �C (150 �F) 126 ohms

93 �C (200 �F) 136 ohms

121 �C (250 �F) 147 ohms

149 �C (300 �F) 158 ohms

177 �C (350 �F) 168 ohms

204 �C (400 �F) 178 ohms

NOTE: See Figure 10 for additional resistance values.

Figure 11 L5 handgun wiringdiagram

Table 8 L5 Handgun Heater Resistance Data

Handgun Voltage Handgun Wattage Resistance

120 VAC 80 165 ohms

240 VAC 80 661 ohms

L7 Handguns

Table 9 L7 Handgun Heater Resistance Data

Handgun Voltage Handgun Wattage Resistance

100 VAC 40 250 ohms

120 VAC 40 330 ohms

200 VAC 40 1000 ohms

240 VAC 40 1322 ohms




Repair WARNING! Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.

Relieving System Pressure Use this general procedure to relieve system hydraulic pressure. For themost up-to-date instructions and for instructions specific to your melter, referto the melter manual.

WARNING! Risk of burns. Failure to relieve system pressure can result inhot adhesive spraying from a connecting point, possibly causing seriousburns. Before removing a hose, a handgun, or any other part of thepressurized system, you must first relieve system pressure.

Items needed:

� appropriate protective clothing� waste container capable of withstanding 230 C (450 F)� collecting pan� cleaning cloth� 6 mm (1/4 in.) flat-blade screwdriver

1. Heat the system to operating temperature.

2. Turn off the melter pump(s).


3. Place a suitable waste container, capable of withstanding adhesivetemperatures of 230 C (450 F) near the handgun nozzle.

4. Aim the handgun so the nozzle points into the container.

4203249B



WARNING! Risk of burns. Shield the area and operator. The handgun mustbe triggered. Failure to do so can result in hot adhesive spraying from aconnecting point downstream of the melter pump.

5. Drain adhesive from the handgun by squeezing the trigger toward thehandle. Continue dispensing adhesive until system hydraulic pressure isrelieved and the handgun is drained of adhesive. Dispose of the drainedadhesive as recommended by your adhesive supplier.

6. Wipe off any adhesive on the handgun nozzle.

7. Place the trigger in the locked position.

8. Place the collecting pan under the melter drain valve.

CAUTION! In the following steps, do not turn the melter drain valves withanything but a flat-blade screwdriver. Failure to follow this caution candamage the melter.

9. See Figure 13. Using a flat-blade screwdriver, open the melter drainvalve.

NOTE: Figure 13 shows a typical arrangement. Details may varydepending on the melter model.

10. Allow the melter manifold to drain as completely as possible.

11. Close the drain valve using a flat-blade screwdriver.

12. Dispose of the drained adhesive as recommended by your adhesivesupplier.

Figure 13 Open the drain valve



Replacing the Electrical Assembly on Bottom-Feed Handguns


Use the following procedures to replace the electrical assembly onbottom-feed handguns. Refer to Recommended Spare Parts and Suppliesunder Parts for part numbers.

The following items are needed to replace the electrical assembly:

� appropriate protective clothing� 3 mm (1/8 in.) flat-blade screwdriver� 3 mm (1/8 in.) Phillips screwdriver� heat-transfer paste� replacement parts (refer to Parts for part numbers)

Remove the Electrical Assembly 1. See Figure 14. Place the trigger safety in the locked position.

2. Relieve system pressure. Refer to Relieving System Pressure earlier inthis section.

1 2

Figure 14 Trigger safety position

1. Unlocked position 2. Locked position

ÎÎÎÎÎÎÎÎÎ

4203244A





4. See Figure 15. Disconnect the hose cordset from the handgun.

5. Place the handgun on its right side.

6. See Figure 16. Remove the left gun handle shell (1) by removing the sixexterior screws (4). Slide the connector guard (3) down to separate thegun handle shell halves.

Figure 15 Disconnecting thehose cordsetconnector

4203236C

4

1

2

3

Figure 16 Removing the electrical assembly (hose not shown for clarity)

1. Left gun handle shell2. Right gun handle shell

3. Connector guard4. Screws

NOTE: The electrical assembly typically consists of an RTD, heatercartridge, and micro-switch, all wired to the 9-pin connector receptacle.Observe the component locations and wire routing prior to removal.



Remove the Electrical Assembly (contd)

4203247B

ÎÎÎÎÎÎ

2

1

4

3

Figure 17 inside view of handgun

1. Gun body2. Heater/RTD wires

3. Switch4. 9-pin connector

7. See Figure 17. Loosen the trigger switch (3) mounting screws and slidethe switch out. Remove the ground screw and carefully push the RTDand heater cartridge out from the gun body (1).

8. Slide the connector guard off of the electrical assembly and set it asidefor reuse.

4203232A

ÎÎÎÎÎÎÎÎÎ



Install the Electrical Assembly 1. See Figure 16. Slide the connector guard (3) onto the electrical

assembly.

2. Apply heat-transfer paste to RTDs and/or heater cartridges.

3. Carefully slide the electrical components into the gun body. Secure theground wire with the ground screw.

4. Slide the trigger switch into place and tighten the switch mountingscrews.

5. Route the wires inside the right gun handle shell and place the gunhandle shells together carefully. Slide the connector guard up over thegun handle shells and reinstall the six screws (4).

6. See Figure 18. Align the hose cordset connector with the handgunconnector. The connectors are keyed for proper connection alignment.

7. Hand tighten the connector swivel nut.

8. Restore the system to normal operation by following the startupinstructions in the melter manual.

Figure 18 Install the cordset onthe handgun



Replacing the Electrical Assembly on Top-Feed Handguns


Use the following procedures to replace the electrical assembly on top-feedhandguns. Refer to Recommended Spare Parts and Supplies under Partsfor part numbers.

The following items are needed to replace the electrical assembly:

� appropriate protective clothing� 3 mm (1/8 in.) flat-blade screwdriver� 3 mm (1/8 in.) Phillips screwdriver� heat-transfer paste� replacement parts (refer to Parts for part numbers)

4203253A

1

2

34

5



Remove the Electrical Assembly 1. See Figure 14. Place the trigger in the locked position (2).





5. See Figure 19. Remove the left gun handle shell (3) by removing theexterior screws (4). Slide the connector guard (1) down to separate thegun handle shells.

NOTE: The electrical assembly consists of an RTD, heater cartridge,and micro-switch, all wired to the 9-pin connector receptacle. Observethe component locations and wire routing prior to removal.

6. Loosen the switch mounting screws and slide the switch out. Removethe ground screw and carefully push the RTD and heater cartridge outfrom the gun body.

7. Slide the electrical assembly out of the right gun handle shell (2).

Figure 19 Remove the electricalassembly

1. Connector guard2. Right gun handle shell3. Left gun handle shell4. Screws5. Plug



Install the Electrical Assembly1. See Figure 19. Slide the connector guard (1) onto the electrical

assembly.

2. Slide the connector guard and electrical assembly into the right gunhandle shell (2).

3. Apply heat-transfer paste to the RTD and heater cartridge.

4. Carefully slide the RTD and heater cartridge into the gun body. Securethe ground wire with the ground screw.

5. Slide the switch into place and tighten the switch mounting screws.

6. Route the wires through the right gun handle shell and align theconnector assembly with the left gun handle shell (3).

7. Ensure that the plug (5) is properly aligned between the gun handleshells. Place the gun handle shells together carefully and reinstall thescrews (4).


4203274A

1

4

7

3

6

9

Heater

Switch

RT

D

NO C

Ground

Fusable link

2

5

8



Replacing an RTD NOTE: L7 handguns do not have an RTD.

1. Remove the nozzle and handle shells as described in Replace theElectrical Assembly in Bottom-Feed Handguns or Replace the ElectricalAssembly in Top-Feed Handguns as appropriate.

2. See Figure 20. Push the head of the RTD out of the gun body (1).

ÎÎÎÎÎÎÎÎÎ

2

1

4

3

Figure 20 Inside view of handgun

1. Gun body2. Heater/RTD wires

3. Switch4. 9-pin connector

3. Unscrew the 9-pin connector (4) separating it into two pieces.

4. Using the socket pin removal tool supplied with the replacement RTD,remove the RTD wire leads (2) from the 9-pin connector receptacle.Refer to Table 10 for locations.

Table 10 9-Pin Connector Locations

Gun Type RTD Leads Heater Leads Switch Leads

120V slots 6 & 7 slots 4 & 5 slots 8 & 9


AD-41H slots 2 & 3 slots 7 & 9 slots 5 & 6

L5 See Figure 21.

Figure 21 Handgun wiringdiagram



Replacing an RTD (contd)

CAUTION! Installing the leads into the wrong slots of the 9-pin connectorreceptacle will damage the electrical assembly.

5. Insert the new RTD wire leads into the slots of the 9-pin connectorreceptacle as indicated in Table 10.

6. Reassemble the 9-pin connector.

7. Apply heat-transfer paste to the RTD.

8. Slide the RTD into the gun body.

9. Reinstall the electrical assembly as described in Replace the ElectricalAssembly in Bottom-Feed Handguns or Replace the Electrical Assemblyin Top-Feed Handguns as appropriate.

1

4

7

3

6

9

Heater

Switch

RT

D

NO C

Ground

Fusable link

2

5

8

1

4

7

3

6

9

Heater

SwitchNO C

Ground

2

5

8



Replacing a Heater Cartridge 1. Remove the handgun nozzle and handle shells as described in Replace

the Electrical Assembly in Bottom-Feed Handguns or Replace theElectrical Assembly in Top-Feed Handguns as appropriate.

2. See Figure 20. Push the heater cartridge out of the gun body.

3. Unscrew the 9-pin connector separating it into two pieces.

4. Using the socket pin removal tool supplied with the replacement heater,remove the heater wire leads from the 9-pin connector receptacle. Referto Table 11 for locations.


Gun Type RTD Leads Heater Leads Switch Leads



AD-41H slots 2 & 3 slots 7 & 9 slots 5 & 6

L5 See Figure 22.

L7 See Figure 23.



5. Insert the new heater wire leads into the slots of the 9-pin connectorreceptacle as indicated in Table 11.


7. Apply heat-transfer paste to the heater cartridge.

8. Slide the heater cartridge into the gun body.





Replacing the Trigger Electrical Switch 1. Remove the handgun nozzle and handle shells as described in Replace

the Electrical Assembly in Bottom-Feed Handguns or Replace theElectrical Assembly in Top-Feed Handguns as appropriate.

2. See Figure 20. Loosen the switch mounting screws and slide the switch(3) out.

3. Unscrew the 9-pin connector separating it into two pieces.

4. Using the socket pin removal tool supplied with the replacement heater,remove pins from the 9-pin connector receptacle. Refer to Table 11 forlocations.


5. Push the new switch leads into the slots of the 9-pin connectorreceptacle as indicated in Table 11.


7. Connect the replacement trigger switch to the right handle shell bysliding the switch into place and tightening the mounting screws.


1 2



Replacing the Packing Cartridge

WARNING! Hot! Risk of burns. Wear heat-protective clothing,heat-protective gloves, and safety goggles.

The following items are needed to replace the packing cartridge:

� appropriate protective clothing� 3 mm (1/8 in.) Phillips screwdriver� two 10 mm (3/8 in.) open-end wrenches� silicone lubricant (refer to Parts for the part number)� heat-transfer paste� new packing cartridge (refer to Parts for the part number)

Remove the Packing Cartridge 1. Place the trigger safety in the locked position.




CAUTION! Never heat a component with a torch or other open flame. Ifcomponents must be heated for maintenance or repair, use an electric ovenwith forced air circulation, or a flameless electric heat gun. Do not heatplastic shells above 230 C (450 F).

4. Remove the left handle shell as described in Replace the ElectricalAssembly in Bottom-Feed Handguns or Replace the Electrical Assemblyin Top-Feed Handguns as appropriate.

5. Carefully push the RTD and heater cartridge from the gun body.Remove the ground screw and ground wire.

6. See Figure 24. Remove the trigger/gun body assembly from the rightgun handle shell.

7. Loosen the trigger linkage (2) using two 10 mm (3/8 in.) wrenches. Placeone wrench on the locknut (1), the other on the trigger linkage, and turnthe trigger linkage to loosen.

Figure 24 Trigger/gun bodyassembly

1. Locknut2. Trigger linkage



Remove the Packing Cartridge (contd)

8. See Figure 25. Remove the pivot pin (3) and unscrew the trigger (4) andtrigger linkage (2) from the packing cartridge (1) assembly.

4203238B

12 3

4

Figure 25 Remove the trigger and trigger linkage

1. Packing cartridge2. Trigger linkage

3. Pivot pin4. Trigger

9. See Figure 26. Unscrew and remove the nozzle (1), seat (2), and sealring (3) from the handgun body, leaving the O-ring on the seat.

4203239B

1

23

Figure 26 Nozzle assembly

1. Nozzle2. Seat and O-ring

3. Seal ring

4203242A

12

3



10. See Figure 27. Push the packing cartridge out of the gun body.

11. Inspect all parts for pitting, hardening, or other damage and clean orreplace them if necessary.

4203240B

Figure 27 Replace the packing cartridge

Install the Packing Cartridge 1. See Figure 27. Apply silicone lubricant to the packing cartridge. Insert

the new packing cartridge into the gun body.

2. See Figure 26. Place the seal ring (3) over the seat (2) and torque theseat to 13.6−20.7 Nm (10−15 ft-lb).

3. See Figure 28. Reassemble the locknut (2) and trigger (3) onto thepacking cartridge shaft (1).

4. Adjust the trigger as described in Adjust the Trigger. Start at step 10.

Figure 28 Assemble the triggerand trigger linkage

1. Packing cartridge shaft2. Locknut3. Trigger and trigger linkage

4203237A

12



Adjusting the Trigger

WARNING! Hot! Risk of burns. Wear heat-protective clothing, heatprotective gloves, and safety goggles.

The following items are needed to adjust the trigger:

� appropriate protective clothing� 3 mm (1/8 in.) Phillips screwdriver� two 10 mm (3/8 in.) open-end wrenches

1. Place the trigger safety in the locked position.




4. Disconnect the hose cordset from the handgun.


6. Remove the gun handle shells by removing the exterior screws.

7. Carefully remove the heater and RTD from the gun body. Remove theground screw and ground wire.

8. Remove the trigger/gun body assembly from the right gun shell.

9. See Figure 29. Loosen the trigger linkage (2) using two 10 mm (3/8 in.)wrenches. Place one wrench on the locknut (1), the other on the triggerlinkage, and turn the linkage to loosen.

Figure 29 Trigger/gun bodyassembly

1. Locknut2. Trigger linkage



10. See Figure 30. Loosen or tighten the trigger linkage until the distancebetween the edge of the trigger and the front end of the gun body(where the gun body meets the brass fitting) is 87 mm (3 7/16 in.).

4203243B

87 mm(3 7/16 in.)

87 mm(3 7/16 in.)

1 2

Figure 30 Adjust the trigger

1. Bottom-feed handguns 2. Top-feed handguns

11. Lock the trigger linkage in place by tightening the locknut.

12. Apply heat-transfer paste to the RTD and heater cartridge.

13. Carefully slide the RTD and heater cartridge into the gun body. Securethe ground wire with its screw.

14. Place the trigger/gun body assembly into the right gun shell and checkthe wire routing.

15. Reinstall the gun handle shells and nozzle as described in Replace theElectrical Assembly in Bottom-Feed Handguns or Replace the ElectricalAssembly in Top-Feed Handguns as appropriate.


ÎÎÎÎÎÎ



Adjusting the Trigger Electrical Switch

WARNING! Hot! Risk of burns. Wear heat-protective clothing, safety gloves,and safety goggles.

The following items are needed to adjust the electrical switch:

� appropriate protective clothing� screwdriver� ohmmeter

1. Place the trigger safety in the locked position.






Figure 31 Disconnect the hose

6. Remove the left gun handle shell by unscrewing the exterior screwsholding the shells together and sliding the connector guard off.

NOTE: Leave the trigger assembly in the right gun handle shell.



7. See Figure 32. Set the ohmmeter at x1 scale and attach wires to pins inthe 9-pin connector for the electrical switch as indicated in Table 12 totest for proper electrical continuity.


Gun Type Switch Leads

AD-41 120V slots 8 and 9

AD-41 240V slots 8 and 9

AD-41H slots 5 and 6

L5 or L7 slots 8 and 9

8. Slowly depress the gun trigger and watch for an indication of electricalcontinuity.

NOTE: The ohmmeter should indicate continuity when the packingcartridge shaft begins to move.

4203246A

4

8

1

23

6

97

5

Figure 32 Check for continuity (AD-41 240V bottom-feed handgun shown)

4203232A

ÎÎÎÎÎÎ



Adjusting the Trigger Electrical Switch (contd)

9. See Figure 33. If continuity does not exist when the handgun is fullytriggered, loosen the switch mounting screws and slide the switchtoward the trigger until continuity is indicated.

4203247A

ÎÎÎÎÎÎÎÎÎÎÎÎ

Figure 33 Adjust the electrical switch

10. When continuity is indicated, tighten the switch mounting screws.

11. Check to make sure that no continuity is indicated when the handgun isnot being triggered. If continuity exists when the handgun is not beingtriggered, loosen the switch mounting screws and move the switchslightly away from the trigger.

NOTE: To adjust the air flow in relation to the adhesive flow, move theelectrical switch toward the trigger to engage the air flow earlier or awayfrom the trigger to engage the air flow later.

12. Install the left gun handle shell and slide the connector guard back intoits original position. Secure the gun handle shells together with theexterior screws.


14. Hand tighten the connector swivel nut.


Figure 34 Connect the hosecordset connector



Replacing an Existing Handgun Replacing an existing handgun with a new one involves five operations:

� relieving hydraulic pressure and purging the hose� removing the old handgun� installing the replacement handgun� checking for leaks� restarting the system

Remove the Existing Handgun Items needed:

� appropriate protective clothing� 20 mm (3/4 in.) open-end wrench� 18 mm (11/16 in.) open-end wrench

WARNING! Risk of electrical shock. Failure to observe this warning canresult in personal injury or death.


2. Place handgun trigger safety in the locked position.

3. Set the melter circuit breaker or the disconnect switch to the OFFposition.

4203244A

ÎÎÎÎÎÎ

4203231A

ÎÎÎÎ



Remove the Existing Handgun (contd)

WARNING! Even when switched off, Nordson melters and guns containelectrical potentials that can cause death. Disconnect and lock out power tothe melter main circuit breaker.

4. Disconnect and lock out the input power line to the melter main circuitbreaker.

5. Unscrew the nozzle from the handgun and keep the nozzle for use withthe replacement handgun.


Figure 35 Disconnect the hosecordset connection

7. See Figure 36. Loosen the hydraulic hose fitting from the swivelconnector using two wrenches. Place a 28 mm (1 1/16 in.) wrench on thewing of the swivel connector and loosen the hose fitting using the18 mm (11/16 in.) wrench.

8. Remove hydraulic hose fitting from the connector on the handgun.

Figure 36 Remove the hose formthe handgun

4203231A

ÎÎ

4203232A

ÎÎÎÎÎÎ



Install the Replacement Handgun

CAUTION! The Nordson handgun, sensor, and cordset are not compatiblewith similar components of other brands. If replacing an existingnon-Nordson handgun with any Nordson RTD handgun contact yourNordson representative. Possible hazards include runaway temperature andfailure to obtain an adequate ground.

Items needed:

� appropriate protective clothing� 28 mm (1 1/16 in.) open-end wrench� 18 mm (11/16 in.) open-end wrench

Before installing the replacement handgun, make sure the

� hydraulic pressure is relieved ( Refer to Relieving System Pressureearlier in this section)

� melter circuit breaker is in the OFF position

� input power line to the melter main circuit breaker is disconnectedand locked out.

Figure 37 Attach the hose to thehandgun

1. See Figure 37. Attach the hydraulic hose fitting to the swivel connectorand tighten using two wrenches. Place a 28 mm (1 1/16 in.) wrench onthe wing of the swivel connector and tighten the hose fitting using the18 mm (11/16 in.) wrench.


3. Hand tighten the swivel connector.

4. Replace the nozzle.

Figure 38 Connect the hosecordset connector



Check for Leaks1. Place the trigger safety in the locked position.

2. Restore electrical power to the melter.

3. Turn the melter circuit breaker on.

4. Let the melter, hose, and handgun reach operating temperature.

5. Check for low-pressure leaks between the hose fitting and the handgunfitting.

6. Refer to the melter manual to slowly increase the hydraulic pressure tothe required operating pressure.

7. Tighten fittings as necessary.

Restart the System1. Follow the startup procedures in the melter manual.

2. Place the trigger safety in the unlocked position.

3. Trigger the handgun until clean adhesive flows.

4. Resume normal operation.



Using the Illustrated Parts Lists To order parts, call the Nordson Customer Service Center or your localNordson representative. Use these five-column parts lists, and theaccompanying illustrations, to describe and locate parts correctly. Thefollowing chart provides guidance for reading the parts lists.

The number in the Item column corresponds to the circled item number in theparts list illustration. A dash in this column indicates that the item is anassembly.

The number in the Part column is the Nordson part number you canuse to order the part. A series of dashes indicates that the part isnot saleable. In this case, you must order either the assembly inwhich the part is used or a service kit that includes the part.

The Description column describes the part and sometimesincludes dimensions or specifications.

The Note column contains letters that refer to notes at thebottom of the parts list. These notes provide importantinformation about the part.

The Quantity column tells you how many of the part isused to manufacture the assembly shown in the partslist illustration. A dash or AR in this column indicatesthat the amount of the item required in the assembly isnot quantifiable.

Item Part Description Quantity Note— 0000000 Assembly A —1 000000 � Part of assembly A 2 A2 - - - - - - � � Part of item 1 13 0000000 � � � Part of item 2 AR

NS 000000 � � � � Part of item 3 2NOTE A: Important information about item 1

AR: As Required

NS: Not Shown



Top-Feed Handgun Parts See Figures 39−40.

Item Part Description Quantity Note— 306990 Handgun, AD-41, top-feed, 120V —— 306988 Handgun, AD-41, top-feed, 240V —— 332280 Handgun, AD-41, top-feed, 240V, LBS —— 1022360 Handgun, L5, top-feed, 120V, switched —— 1022361 Handgun, L5, top-feed, 240V, switched —— 1022365 Handgun, L7, top-feed, 120V, unswitched, swivel —— 1022366 Handgun, L7, top-feed, 240V, unswitched. swivel —— 1022367 Handgun, L7, top-feed, 120V, switched, swivel —— 1022368 Handgun, L7, top-feed, 240V, switched, swivel —1 940133 � O RING,VITON,.426ID X .070W,BR,10413 1 A2 - - - - - - � SEAT 1 B3 900470 � ADHESIVE,LOCTITE 272,RED,HI TEMP,50ML 14 152987 � SEAL,RING,SEAT 15 271877 � CARTRIDGE,PACKING,AD31 1

271678 � CARTRIDGE,PACKING (LBS handguns only) 16 - - - - - - � BODY,HANDGUN,AD41,TOPFEED 1 B7 - - - - - - � NUT,HEX,MACH,#10-32,STL,ZN,14448-FA 18 - - - - - - � LINKAGE,TRIGGER 19 271617 � SPRING,COMP, .620X .455 OD X.039 110 - - - - - - � TRIGGER,GUN,AD31 111 - - - - - - � PIN,DOWEL,.250X1.250,H&G 112 - - - - - - � SCR,FIL,6-32 X.500 W/POLY-LOK 413 - - - - - - � SHELL,GUN,LEFT,AD41,TOP 114 - - - - - - � SAFETY,GUN 115 271620 � SPRING,WAVE,SAFETY 116 - - - - - - � SHELL,GUN,RIGHT,AD41,TOP 117 - - - - - - � LOCKWSHR,E,SPT,#4,STL,ZN 218 - - - - - - � SCR,PAN,4-40 X .312,SL,BL 219 - - - - - - � CONNECTOR ASSY 1 B20 - - - - - - � PLATE,BEARING 121 - - - - - - � SCR,SHLDR,10-24X .375 122 - - - - - - � SCR,FIL,5-40X .250,SL,ZN 123 306996 � PLUG,H/G,SHELL,ULTEM 124 - - - - - - � TAG,STAMPING INFO,AD41 125 - - - - - - � SCR,DRIVE,RD,2X .187,ZN 226 - - - - - - � SWIVEL,SP,SAE-6/JIC-6 127 178475 � TAG,HOT SURFACE 2NS 307000 � INSULATOR,HEAT,FITTING,AD41 1 C29 - - - - - - � CAP/PLUG,TAPERED, .302 O.D. 130 - - - - - - � CAP/PLUG,TAPERED, .608 O.D. 131 - - - - - - � RING,SWIVEL LOCK,AD41 1 C32 - - - - - - � SCR,SKT SET,4-40X .375,CUP,BL 1 C

NOTE A: Not used on AD-41 handgun part 332280.

B: Refer to Recommended Spare Parts and Supplies for all electrical component service kit part numbers.

C: Not used on L5 or L7 handguns.



Figure 39 Top-feed handgun parts (1 of 2)



Top-Feed Handgun Parts (contd)

Figure 40 Top-feed handgun parts (2 of 2)



This page intentionally left blank.



Bottom-Feed Handgun Parts See Figures 41−42.

Item Part Description Quantity Note— 1031712 Handgun, AD-41, bottom-feed, 200V, SBS —— 306957 Handgun, AD-41, bottom-feed, 240V —— 330750 Handgun, AD-41, bottom-feed, 240V, LBS —— 1022338 Handgun, L5, bottom-feed, 120V, switched —— 1022339 Handgun, L5, bottom-feed, 240V, switched —— 1022362 Handgun, L7, bottom-feed, 20V, unswitched,

swivel—

— 1022363 Handgun, L7, bottom-feed, 240V, unswitched,swivel

—

— 1022364 Handgun, L7, bottom-feed, 120V, switched, swivel —— 1023599 Handgun, L7, bottom-feed, 240V, switched, swivel —1 940133 � O RING,VITON,.426ID X .070W,BR,10413 1 A2 - - - - - - � SEAT 13 900470 � ADHESIVE,LOCTITE272,RED,HITEMP,50ML 14 152987 � SEAL,RING,SEAT 15 271877 � CARTRIDGE,PACKING,AD31 1

271678 � CARTRIDGE,PACKING (LBS handgun only) 16 - - - - - - � BODY,HANDGUN,AD41,SWIVEL LOCK 17 - - - - - - � NUT,HEX,MACH,#10-32,STL,ZN,14448-FA 18 - - - - - - � LINKAGE,TRIGGER 19 271617 � SPRING,COMP, .620X .455ODX.039 110 - - - - - - � TRIGGER,GUN,AD31 111 - - - - - - � PIN,DOWEL,.250X1.250,H&G 112 - - - - - - � SCR,FIL,6-32X .500 W/POLY-LOK 413 - - - - - - � SHELL,GUN,LEFT,B/M 114 - - - - - - � SAFETY,GUN 115 271620 � SPRING,WAVE,SAFETY 116 - - - - - - � SHELL,GUN,RIGHT,AD41 117 - - - - - - � LOCKWSHR,E,SPT,#4,STL,ZN 218 - - - - - - � SCR,PAN,4-40 X .312,SL,BL 219 - - - - - - � CONNECTOR ASSY 1 B20 - - - - - - � PLATE,BEARING 121 - - - - - - � SCR,SHLDR,10-24X .375 122 - - - - - - � SCR,FIL,5-40X .250,SL,ZN 123 - - - - - - � SCR,FIL,6-32X .375,SL,ZN 124 - - - - - - � TAG,STAMPING INFO,AD41 125 - - - - - - � SCR,DRIVE,RD,0X .125,ZN 4

Continued...



Item Part Description Quantity Note26 - - - - - - � SWIVEL,SP,SAE-6/JIC-6 1 C27 178475 � TAG,HOTSURFACE 228 - - - - - - � SCR,FIL,6-32X .625,SL,ZN 129 307000 � INSULATOR,HEAT,FITTING,AD41 1 C31 - - - - - - � CAP/PLUG,TAPERED, .302 O.D. 132 - - - - - - � CAP/PLUG,TAPERED, .608 O.D. 133 - - - - - - � RING,SWIVEL LOCK,AD41 1 C34 - - - - - - � SCR,SKT SET,4-40X .375,CUP,BL 1 C37 1087000 � TAG,WARNING,AD41 1

NOTE A: Not used on AD-41 handgun part 330750.

B: Refer to Recommended Spare Parts and Supplies for all electrical component service kit part numbers.

C: Not used on L5 or L7 handguns.



Bottom-Feed Handgun Parts (contd)

Figure 41 Bottom-feed handgun parts (1 of 2)



Figure 42 Bottom-feed handgun parts (2 of 2)



Adapters See Figure 43. These adapters can be used on all handguns except forAD-41 LBS handguns.

Item Part Description Quantity Note1 306981 Kit, adapter, extrusion, down-apply — A

2 306982 Kit, adapter, nozzle, down-swirl B, C, D3 306983 Kit, adapter, nozzle, swirl B, C, D4 306984 Kit, adapter, nozzle, fan spray, wide-pattern C, D

NOTE A: Order extrusion nozzles separately. Refer to Extrusion Nozzles later in this section.

B: Order wide-pattern swirl nozzle part 125607 (0.025 in. orifice), 131998 (0.030 in. orifice), or131635 (0.046 in. orifice) separately.

C: Order one air control kit, part 306970, per handgun separately.

D: Although these adapter part numbers are included, this manual applies only to extrusion handguns.

4203275A

4

3

2

1

Figure 43 Adapters

4203251A

4203252A



Extrusion Nozzles Extrusion handguns can be used with a variety of nozzles. The size of thenozzle opening (orifice diameter) and the length of the nozzle (engagement)affect how quickly adhesive will flow from the handgun. The larger the orificediameter, the faster the adhesive will flow. The longer the nozzleengagement, the slower adhesive will flow. Contact a Nordsonrepresentative for assistance in selecting the best nozzle for an application.

Male-Threaded Standard-Engagement Nozzles

Part Description

238252 Nozzle, 0.020 in. OD

238253 Nozzle, 0.030 in. OD

238254 Nozzle, 0.040 in. OD

238256 Nozzle, 0.060 in. OD

238259 Nozzle, 0.090 in. OD

Male-Threaded Extended-Engagement Nozzles

Part Description

274968 Nozzle, 0.042 in. OD

274969 Nozzle, 0.061 in. OD

274970 Nozzle, 0.090 in. OD

274971 Nozzle, 0.130 in. OD

Male-Threaded Extended-Engagement Nozzles (LBSHandgun Only)

Part Description

804387 Nozzle, 0.062 in. OD

271683 Nozzle, 0.093 in. OD

271684 Nozzle, 0.125 in. OD

271685 Nozzle, 0.156 in. OD



Recommended Spare Parts and Supplies

Table 13 Recommended Spare Parts for Top-Feed AD-41 Handguns

Part Description Quantity Note940133 O-ring, Viton, 0.426 ID x 0.070 W in. 1 A152987 Seal, ring, seat 1 A271629 Seat 1 B273003 Seat, carbide, LBS 1 C271877 Cartridge, packing 1 B271678 Cartridge, packing, LBS 1 C306961 Body, handgun 1 A338549 Service kit, connector assembly, AD-41, top-feed, 240V 1 D335975 Service kit, heater, 240V 1 D, F335976 Service kit, RTD 1 D, F335977 Service kit, switch 1 D, F338550 Service kit, connector assembly, AD-41, top-feed, 120V 1 E335978 Service kit, heater, 120V 1 E, F335976 Service kit, RTD 1 E, F335977 Service kit, switch 1 E, F

NOTE A: Used on all AD-41 top-feed handguns.

B: Used on all AD-41 handguns except for LBS handguns.

C: Used only on LBS handguns.

D: Used on handgun parts 306988 and 332280.

E: Used on handgun part 306990.

F: includes a socket pin removal tool, part 100586.



Table 14 Recommended Spare Parts for Bottom-Feed AD-41 Handguns

Part Description Quantity Note940133 O-ring, Viton, 0.426 ID x 0.070 W in. 1 A152987 Seal, ring, seat 1 A271629 Seat 1 B273003 Seat, carbide, LBS 1 C271877 Cartridge, packing 1 B271678 Cartridge, packing, LBS 1 C306961 Body, handgun 1 A338547 Service kit, connector assembly, AD-41, bottom-feed, 240V 1 D338537 Service kit, RTD 1 D, H338536 Service kit, heater, 240V 1 D, H338538 Service kit, switch 1 D, H338548 Service kit, connector assembly, AD-41, bottom-feed, 120V 1 E338537 Service kit, RTD 1 E, H338539 Service kit, heater, 120V 1 E, H338538 Service kit, switch 1 E, H330942 Service kit, connector assembly, AD-41H, bottom-feed, 120V 1 F330941 Service kit, RTD 1 F, H330940 Service kit, heater, 120V 1 F, H338538 Service kit, switch 1 F, H1032359 Service kit, electric, AD-41, bottom-feed, 200V 1 G338537 Service kit, RTD 1 G, H1032538 Service kit, heater, 200V 1 G, H338538 Service kit, switch 1 G, H

NOTE A: Used on all AD-41 handguns.

B: Used on all AD-41 handguns except for LBS handguns.

C: Used only on LBS handguns.

D: Used on handgun parts 306957 and 330750.


F: Used on handgun part 725817.

G: Used on handgun part 1031712.

H: Includes a socket pin removal tool, part 100586.



Recommended Spare Parts and Supplies (contd)

Table 15 Recommended Spare Parts for Top-Feed L5/L7 Handguns

Part Description Quantity Note940133 O-ring, Viton, 0.426 ID x 0.070 W in. 1 A152987 Seal, ring, seat 1 A271877 Cartridge, packing 1 A1022389 Connector assembly, L5, 120V, top-feed, switched, with fusible link 1 B1022390 Connector assembly, L5, 240V, top-feed, switched, with fusible link 1 C1028827 Service kit, RTD, L5, top-feed 11028862 Kit, heater/fusible link, L5, 120V 11028864 Kit, heater/fusible link, L5, 240V 11028953 Fusible link, thermal, 240 �C 1 D1022394 Connector assembly, L7, 120V, top-feed, unswitched 1 E1022395 Connector assembly, L7, 240V, top-feed, unswitched 1 F1022396 Connector assembly, L7, 120V, top-feed, switched 1 G1022397 Connector assembly, L7, 240V, top-feed, switched 1 H1028957 Kit, heater, L7, 120V, top-feed 11028958 Kit, heater, L7, 240V, top-feed 1335977 Service kit, switch 1 I

NOTE A: Used on all L5/L7 top-feed handguns.

B: Used on handgun part 1022360.

C: Used on handgun part 1022361.

D: Used only on L5 handguns.


F: Used on handgun part 1022366


H: Used on handgun part 1022368.

I: Used only on switched handguns.



Table 16 Recommended Spare Parts for Bottom-Feed L5/L7 Handguns

Part Description Quantity Note940133 O-ring, Viton, 0.426 ID x 0.070 W in. 1 A152987 Seal, ring, seat 1 A271877 Cartridge, packing 1 A1022387 Connector assembly, L5, 120V, bottom-feed, switched, with fusible link 1 B1022388 Connector assembly, L5, 240V, bottom-feed, switched, with fusible link 11028829 Service kit, RTD, L5, bottom-feed 1 C1028861 Kit, heater/fusible link, L5, 120V 11028863 Kit, heater/fusible link, L5, 240V 11028953 Fusible link, thermal, 240 �C 1 D1022391 Connector assembly, L7, 120V, bottom-feed, unswitched 1 E1022392 Connector assembly, L7, 240V, bottom-feed, unswitched 1 F1022393 Connector assembly, L7, 120V, bottom-feed, switched 1 G1023604 Connector assembly, L7, 240V, bottom-feed, switched 1 H1028959 Kit, heater, L7, 120V, bottom-feed 11028980 Kit, heater, L7, 240V, bottom-feed 1338538 Service kit, switch 1 I

NOTE A: Used on all L5/L7 bottom-feed handguns.

B: Used on handgun part 1022338.

C: Used on handgun part 1022339.

D: used only on L5 handguns.


F: Used on handgun part 1022363.


H: Used on handgun part 1023599.

I: Used only on switched handguns.



Recommended Spare Parts and Supplies (contd)

Table 17 Recommended Supplies

Part Description270755 Fluid, Type-R, 3.78 l (1 gal)900301 Grease, lubricating, silicone, 150 g (5.3 oz)100586 Tool, socket pin removal901915 Kit, nozzle cleaning901925 � Assembly, tool box901916 � Vise, pin901922 � Vial, probes, 0.118 mm (0.007 in.) diameter901923 � Vial, probes, 0.279 mm (0.011 in.) diameter901924 � Vial, probes, 0.356 mm (0.014 in.) diameter

series Ad-41, L5, And L7 Extrusion Handguns - Nordsonemanuals.nordson.com/adhesives/English_Manuals/237567.pdf · Series AD-41, L5, and L7 Extrusion Handguns ... GA 30097 Notice This

Documents