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Instruction Sheet
Part MSG-HVLP-A� 2005 Nordson Corporation
P/N MSG−HVLP−A
Maverick HVLP Spray Gun
Safety Read and follow these safety instructions. Task-and
equipment-specific warnings, cautions, andinstructions are included
in equipmentdocumentation where appropriate.
Make sure all equipment documentation, includingthese
instructions, is accessible to personsoperating or servicing
equipment.
Qualified Personnel Equipment owners are responsible for making
surethat Nordson equipment is installed, operated, andserviced by
qualified personnel. Qualifiedpersonnel are those employees or
contractors whoare trained to safely perform their assigned
tasks.They are familiar with all relevant safety rules
andregulations and are physically capable ofperforming their
assigned tasks.
Intended Use Use of Nordson equipment in ways other thanthose
described in the documentation supplied withthe equipment may
result in injury to persons ordamage to property.
Some examples of unintended use of equipmentinclude
� using incompatible materials
� making unauthorized modifications
� removing or bypassing safety guards orinterlocks
� using incompatible or damaged parts
� using unapproved auxiliary equipment
� operating equipment in excess of maximumratings
Regulations and Approvals Make sure all equipment is rated and
approved forthe environment in which it is used. Any
approvalsobtained for Nordson equipment will be voided
ifinstructions for installation, operation, and serviceare not
followed.
Personal Safety To prevent injury follow these instructions.
� Do not operate or service equipment unless youare
qualified.
� Do not operate equipment unless safetyguards, doors, or covers
are intact andautomatic interlocks are operating properly. Donot
bypass or disarm any safety devices.
� Keep clear of moving equipment. Beforeadjusting or servicing
moving equipment, shutoff the power supply and wait until
theequipment comes to a complete stop. Lock outpower and secure the
equipment to preventunexpected movement.
� Relieve (bleed off) hydraulic and pneumaticpressure before
adjusting or servicingpressurized systems or components.Disconnect,
lock out, and tag switches beforeservicing electrical
equipment.
� While operating manual spray guns, make sureyou are grounded.
Wear electrically conductivegloves or a grounding strap connected
to thegun handle or other true earth ground. Do notwear or carry
metallic objects such as jewelry ortools.
� If you receive even a slight electrical shock,shut down all
electrical or electrostaticequipment immediately. Do not restart
theequipment until the problem has been identifiedand
corrected.
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Maverick HVLP Spray Gun2
Part MSG-HVLP-A � 2005 Nordson Corporation
Personal Safety (contd)� Obtain and read Material Safety Data
Sheets
(MSDS) for all materials used. Follow themanufacturer’s
instructions for safe handlingand use of materials, and use
recommendedpersonal protection devices.
� Make sure the spray area is adequatelyventilated.
� To prevent injury, be aware of less-obviousdangers in the
workplace that often cannot becompletely eliminated, such as hot
surfaces,sharp edges, energized electrical circuits, andmoving
parts that cannot be enclosed orotherwise guarded for practical
reasons.
High-Pressure Fluids
High-pressure fluids, unless they are safelycontained, are
extremely hazardous. Alwaysrelieve fluid pressure before adjusting
or servicinghigh pressure equipment. A jet of high-pressurefluid
can cut like a knife and cause serious bodilyinjury, amputation, or
death. Fluids penetrating theskin can also cause toxic
poisoning.
If you suffer a fluid injection injury, seek medicalcare
immediately. If possible, provide a copy of theMSDS for the
injected fluid to the health careprovider.
The National Spray Equipment ManufacturersAssociation has
created a wallet card that youshould carry when you are operating
high-pressurespray equipment. These cards are supplied withyour
equipment. The following is the text of thiscard:
WARNING: Any injury caused by highpressure liquid can be
serious. If you areinjured or even suspect an injury:
� Go to an emergency room immediately.
� Tell the doctor that you suspect an injectioninjury.
� Show him this card
� Tell him what kind of material you were spraying
MEDICAL ALERT—AIRLESS SPRAY WOUNDS:NOTE TO PHYSICIAN
Injection in the skin is a serious traumatic injury. Itis
important to treat the injury surgically as soon aspossible. Do not
delay treatment to researchtoxicity. Toxicity is a concern with
some exoticcoatings injected directly into the bloodstream.
Consultation with a plastic surgeon or areconstructive hand
surgeon may be advisable.
The seriousness of the wound depends on wherethe injury is on
the body, whether the substance hitsomething on its way in and
deflected causingmore damage, and many other variables
includingskin microflora residing in the paint or gun whichare
blasted into the wound. If the injected paintcontains acrylic latex
and titanium dioxide thatdamage the tissue’s resistance to
infection,bacterial growth will flourish. The treatment thatdoctors
recommend for an injection injury to thehand includes immediate
decompression of theclosed vascular compartments of the hand
torelease the underlying tissue distended by theinjected paint,
judicious wound debridement, andimmediate antibiotic treatment.
Fire Safety To avoid a fire or explosion, follow
theseinstructions.
� Ground all conductive equipment. Use onlygrounded air and
fluid hoses. Check equipmentand workpiece grounding devices
regularly.Resistance to ground must not exceed onemegohm.
� Shut down all equipment immediately if younotice static
sparking or arcing. Do not restartthe equipment until the cause has
beenidentified and corrected.
� Do not smoke, weld, grind, or use open flameswhere flammable
materials are being used orstored.
� Do not heat materials to temperatures abovethose recommended
by the manufacturer.Make sure heat monitoring and limiting
devicesare working properly.
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Maverick HVLP SPray Gun 3
Part MSG-HVLP-A� 2005 Nordson Corporation
� Provide adequate ventilation to preventdangerous
concentrations of volatile particles orvapors. Refer to local codes
or your materialMSDS for guidance.
� Do not disconnect live electrical circuits whenworking with
flammable materials. Shut offpower at a disconnect switch first to
preventsparking.
� Know where emergency stop buttons, shutoffvalves, and fire
extinguishers are located. If afire starts in a spray booth,
immediately shut offthe spray system and exhaust fans.
� Shut off electrostatic power and ground thecharging system
before adjusting, cleaning, orrepairing electrostatic
equipment.
� Clean, maintain, test, and repair equipmentaccording to the
instructions in your equipmentdocumentation.
� Use only replacement parts that are designedfor use with
original equipment. Contact yourNordson representative for parts
informationand advice.
Halogenated Hydrocarbon SolventHazards
Do not use halogenated hydrocarbon solvents in apressurized
system that contains aluminumcomponents. Under pressure, these
solvents canreact with aluminum and explode, causing injury,death,
or property damage. Halogenatedhydrocarbon solvents contain one or
more of thefollowing elements:
Element Symbol Prefix
Fluorine F “Fluoro-”
Chlorine Cl “Chloro-”
Bromine Br “Bromo-”
Iodine I “Iodo-”
Check your material MSDS or contact your materialsupplier for
more information. If you must usehalogenated hydrocarbon solvents,
contact yourNordson representative for information aboutcompatible
Nordson components.
Action in the Event of aMalfunction If a system or any equipment
in a systemmalfunctions, shut off the system immediately andperform
the following steps:
� Disconnect and lock out system electricalpower. Close
hydraulic and pneumatic shutoffvalves and relieve pressures.
� Identify the reason for the malfunction andcorrect it before
restarting the system.
Disposal Dispose of equipment and materials used inoperation and
servicing according to local codes.
Description The lightweight Maverick HVLP spray gun is idealfor
production settings and can be used with avariety of low and
high-viscosity coatings on arange of substrates including wood,
metal andglass. The gun’s lightweight, ergonomic design,easy
trigger pull, and single knob fan adjustmentmaximize operator
efficiency and reduce fatigue.
Specifications Weight: 558 grams (19.69 oz)
Air Inlet Size: 3/8 in. NPS
Fluid Inlet Size: 3/8 in. NPS
Maximum Air Pressure: 3 bar (43 psi)
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Maverick HVLP Spray Gun4
Part MSG-HVLP-A � 2005 Nordson Corporation
Installation See Figure 1.
Make sure:
� you have an appropriate fluid tip and air cap foryour
application.
� you have air and fluid hoses of the correctlength, ID, and
materials. Use a grounding-typeair hose.
WARNING: The air hose must be agrounding-type hose, with
continuitybetween fittings. Without a ground, a staticcharge could
build up in the spray gun,resulting in shocks to the operator
orsparking that could cause a fire.Resistance checks, from hose
fitting tohose fitting, should be part of your regularmaintenance
procedures.
1. Clean the air hose fittings with a clean, drycloth.
2. Blow out the air hose then connect the air hosebetween the
1/4-inch NPS air inlet at the base ofthe gun handle and the air
supply outlet.
3. Regulate the supply air for a maximumpressure of 3.0 bar
(43psi) or less at the gun.
4. Connect the fluid hose between the fluiddelivery system
outlet and the 3/8-inch NPS fluidinlet on the gun extension.
5. Bundle the air and fluid hose(s) together withhook and loop
tape, spiral-cut tubing, or similardevices. Make sure the hoses can
flex withoutstrain.
6. Supply clean, filtered air to the spray gun.
7. Use the wrench included with the spray gun totighten the
nozzle.
1300568A
Air Control
FluidInlet3/8−in. NPS
PatternControl
Air Inlet1/4−in. NPS
FluidControl
Figure 1 Maverick HVLP spray gun installation
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Maverick HVLP SPray Gun 5
Part MSG-HVLP-A� 2005 Nordson Corporation
Operation Make sure:
� the fluid tip is securely tightened and the air capis
correctly installed and securely held with theretaining ring.
� all fluid and air connections are secure andleak-free. The
fluid hose(s) are grounded.
� air supply and fluid delivery components arecorrectly
installed. All conductive systemcomponents and flammable material
containersare securely connected to a true earth ground.
� the gun handle, operator’s station, and sprayarea are clean
and free of debris.
NOTE: When starting a new spray system for thefirst time, remove
the air cap and flush the fluiddelivery system, hose(s), and spray
gun with asolvent compatible with the coating material youwill be
using. Flushing will remove contaminantsfrom the system.
1. Adjust the air pressure with the air control knobin the
handle of the spray gun.
2. Adjust the spray pattern with the pattern controlknob on the
left side of the spray gun.
Daily Maintenance Daily lubrication and cleaning of the spray
gun isrecommended to maintain the best condition of thespray
gun.
1. Shut off the fluid delivery system and air supply.
2. Trigger the gun into the booth or a groundedwaste container
to relieve any residualpressure.
3. Soak the fluid tip and air cap in a compatiblesolvent to
dissolve any accumulated coatings.Clean them with the brushes
included with thegun.
4. Clean the gun extension and handle with aclean cloth dampened
with solvent. Do notsoak the gun in solvent.
5. Dry the fluid tip, air cap, and gun withlow-pressure air from
an OSHA-approvedblowgun.
6. Apply lubrication and grease where noted inFigure 2.
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Maverick HVLP Spray Gun6
Part MSG-HVLP-A � 2005 Nordson Corporation
Troubleshooting This section contains troubleshooting
proceduresfor common gun problems and spray pattern andfilm-build
faults. If you cannot solve your problemwith the information given
here, contact yourNordson representative for help.
See Figure 2.
Problem Example Possible Cause Corrective Action
1. Gun will notspray
No pressure at spraygun
Check the air lines andair supply connection.p y
Fluid adjusting screwnot properly adjusted
Adjust the fluidadjusting screw.
Spray gun or fluidsupply passagesblocked
Thoroughly clean thespray gun.
2. Incorrect spraypattern
Material build up on aircap
Clean the air cap
Normal Spray Pattern: Worn or damagedgasket
Replace the greenplastic ring (21)
Incorrect material flowor viscosity
Adjust the material flowor viscosity
3. Fluttering Spray Spray gun or fluidsupply passagesblocked
Thoroughly clean thespray gun.
Worn packing or loosepacking nut
Replace or tighten theseal nut (22).
Damaged or loose fluidtip
Replace or tighten thenozzle/fluid tip (3).
4. Fluid leaking frompacking nut
Packing nut loose or thepacking is dry
Tighten or lubricate theseal (23).
Needle is worn Replace theneedle (12).
5. Fluid dripping fromfluid tip
Worn or damaged fluidtip or needle
Replace the nozzle/fluidtip (3) or needle (12).
Stuck needle packing orneedle
Lubricate the seal (23)or needle (12).
Packing gland to tight Adjust the seal (23)
Loose fluid control knob Adjust the fluid controlknob (11).
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Maverick HVLP SPray Gun 7
Part MSG-HVLP-A� 2005 Nordson Corporation
Repair See Figure 2.
Preparations 1. Flush the fluid delivery system, hoses, and
spray gun.
2. Turn off the fluid delivery system and air supply.Relieve
system fluid and air pressures. Pointthe gun into the booth and
trigger it to relieveany residual pressure.
3. Disconnect the air and fluid hoses from thespray gun.
4. Move the spray gun to a clean, dry, flat surface.
Air Cap, Nozzle, and NeedleReplacement The spray gun is shipped
standard with a 1.0-mmfluid tip, needle, and air cap
combination.Additional size kit combinations are availabledepending
on the application.
1. Remove the fluid control knob (11) and needlespring (10) from
the back of the spray gun.
2. Carefully pull the needle (12) back out of theneedle housing
(9).
3. Remove the retaining ring (2), air cap (1) andnozzle (3) from
the front of the spray gun.
NOTE: Make sure to replace the complete nozzle,needle, and air
cap set.
4. Install the new nozzle and air cap on the front ofthe spray
gun.
5. Carefully slide the new needle through theneedle housing and
into the spray gunextension until only the small lip of the
needleremains outside the needle housing.
6. Insert the spring into the needle housing.
7. Push the fluid control knob onto the spring tomate the
threaded parts then screw the knobonto the needle housing.
Spray Gun Disassembly A complete set of replacement wear parts
includingseals, springs, and fittings and a spanner wrenchare
included with your spray gun. Use Figure 2 todisassemble and
assemble the spray gun toreplace any of the wear parts.
NOTE: When assembling the spray gun, applylubrication and grease
where noted in Figure 2.
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Maverick HVLP Spray Gun8
Part MSG-HVLP-A � 2005 Nordson Corporation
Parts See Figure 2.
Part Description Note1059773 GUN, manual HVLP spray, with 1.0-mm
air cap1059774 REPAIR KIT, manual HVLP spray gun A
NOTE A: Kit includes a complete set of replaceable wear
items.
Items in Repair Kit 1059774
Apply Lubricant
Apply Non−Silicone Grease
1 2 34 5 6 7
8
9 10 11
12
13
17
14
15
16
18
19
21
22 23 24 25
20
1300566A
Figure 2 Maverick HVLP Spray Gun
1. Air cap2. Retaining ring3. Nozzle/Fluid tip4. Ring5. Control
knob6. Screw7. Spray regulator8. Gun body9. Needle housing
10. Needle spring11. Fluid control knob12. Needle13. Air adjust
valve14. Spanner wrench15. Brush16. Material sleeve17. Pin18.
Trigger
19. Washer20. Air valve assembly21. Green plastic ring22. Seal
nut23. Seal24. Washer25. Spring
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Maverick HVLP SPray Gun 9
Part MSG-HVLP-A� 2005 Nordson Corporation
Air Cap, Nozzle, and Needle Kits See Figure 3.
NOTE: The spray gun is shipped standard with a1.0-mm fluid tip,
needle, and air cap combination.Additional size kit combinations
are availabledepending on the application. Make sure toreplace the
complete fluid tip, needle, and air capset.
Part Description NoteSiphon Feed Kits
1059775 AIR CAP KIT, siphon feed, HVLP spray, 1.0 mm1059776 AIR
CAP KIT, siphon feed, HVLP spray, 1.4 mm1059777 AIR CAP KIT, siphon
feed, HVLP spray, 1.7 mm1059778 AIR CAP KIT, siphon feed, HVLP
spray, 2.0 mm1059779 AIR CAP KIT, siphon feed, HVLP spray, 2.3
mm
HVLP Siphon Feed Compliance Kits1059793 AIR CAP KIT, compliance,
siphon feed, HVLP spray, 1.0 mm A1059794 AIR CAP KIT, compliance,
siphon feed, HVLP spray, 1.4 mm A1059795 AIR CAP KIT, compliance,
siphon feed, HVLP spray, 1.7 mm A1059796 AIR CAP KIT, compliance,
siphon feed, HVLP spray, 2.0 mm A1059797 AIR CAP KIT, compliance,
siphon feed, HVLP spray, 2.3 mm A
Pressure Feed Kits1059790 AIR CAP KIT, pressure feed, HVLP
spray, 1.4 mm1059791 AIR CAP KIT, pressure feed, HVLP spray, 1.7
mm1059792 AIR CAP KIT, pressure feed, HVLP spray, 2.3 mm
HVLP Pressure Feed Compliance Kits1059798 AIR CAP KIT,
compliance, pressure feed, HVLP spray, 1.4 mm A1059800 AIR CAP KIT,
compliance, pressure feed, HVLP spray, 1.7 mm A1059802 AIR CAP KIT,
compliance, pressure feed, HVLP spray, 2.3 mm A
NOTE A: Compliance kit includes air cap, retaining ring,
pressure gage, and tubing. The kit does not include fluidtip or
needle.
1300567A
Figure 3 Maverick HVLP Air Cap, Nozzle/Fluid Tip, and Needle
Kit
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Maverick HVLP Spray Gun10
Part MSG-HVLP-A � 2005 Nordson Corporation
Issued 1/05
Original copyright date 2005. Nordson and the Nordson logo are
registered trademarks of Nordson Corporation.
SafetyQualified PersonnelIntended UseRegulations and
ApprovalsPersonal SafetyFire SafetyAction in the Event of a
MalfunctionDisposal
DescriptionSpecifications
InstallationOperationDaily
MaintenanceTroubleshootingRepairPreparationsAir Cap, Nozzle, and
Needle ReplacementSpray Gun Disassembly
PartsAir Cap, Nozzle, and Needle Kits