Manual de Instrucciones - Milroyal B

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TABLE OF CONTENTS

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Section 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Milroyal “B” Model Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Section 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Service Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Section 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Gear Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Initial Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section 4 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 5 Corrective Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Routine Preventive Maintenance Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Returning Units to the Factory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Packing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table of Equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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LIST OF ILLUSTRATIONS

Figure 1. Milroyal B Metering Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 2. Capacity Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Figure 3. Float Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 4. Vented Riser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 5. Safety & Back Pressure Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 6. Recommended Valve Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 7. ©" to 1¥" Packed Plunger Liquid End Assembly Drawing (C-102-0644-000). . . . . . . . . . . . . . . . 22Figure 8. 2º" Packed Plunger Liquid End Assembly Drawing (C-102-0104-000). . . . . . . . . . . . . . . . . . . . . . . . 23Figure 9. 3º" Packed Plunger Liquid End Assembly Drawing (D-102-0955-000). . . . . . . . . . . . . . . . . . . . . . . . 25Figure 9. Milroyal B Pump Drive Assembly Drawing (D-102-1835-000). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Figure 10. Milroyal B Pump Drive Assembly Drawing Continued (D-102-1835-000). . . . . . . . . . . . . . . . . . . 28

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The Flow Control Division of the Milton Roy Company warrants its metering pump products against de-fects in workmanship or materials for three years under normal use form the date of shipment from ourwarehouse or the warehouse of our agent. All metering pump components are warranted for three years,except that warranties on equipment and accessories furnished with the pump but manufactured by oth-ers are limited to the warranties offered by the manufacturers of their respective products. This warrantyis not extended to electronic or Pneumatic control devices supplied with a Milton Roy metering pump.These items are covered by the warranties offered by the manufacturer or the Milton Roy Warranty forElectronic Controls and Actuators.

All obligations and liabilities under this warranty are limited to refunding, repairing or replacing (at ouroption), f.o.b. our plant, such allegedly defective units as are returned to our plant, carrier charges pre-paid. Repairs or replacements are made subject to factory inspection of returned items.

This warranty does not extend to damage by corrosion or erosion. The materials of construction offeredare recommendations subject in all cases to verification and acceptance by the customer. These recom-mendations, based on previous Company experience and best available information, do not constituteguarantees against wear or chemical action.

Expressly excluded from this warranty are defects caused by misuse, abuse, or improper application, em-ployment, or operation of the unit. Expendable items and damage resulting from unauthorized repair arenot covered by this warranty. No liability for consequential damages or reinstallation labor is accepted.Milton Roy Company will not assume responsibility for contingent liability for alleged failure of its prod-ucts.

This warranty is in lieu of all other warranties expressed or implied.

METERING PUMP PRODUCTSTHIRTY-SIX MONTH LIMITED WARRANTY

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Figure 1. Milroyal B Metering Pump.

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GENERALThe Milroyal B is a reciprocating controlled-vol-

ume pump designed to move specific volumes ofliquid against a positive pressure differential be-tween the pump suction and the pump dis-charge. The delivered volume is controllablewithin one percent of setting.

The pump consists of three major compo-nents: (1) a drive unit, (2) a reciprocating plunger,and (3) a liquid end. Pump delivery is a functionof drive speed, plunger stroke length, andplunger diameter. In addition, delivered volumefor a given pump can be varied by mechanical(micrometer hand knob) or (optional) electrical orpneumatic adjustment of plunger stroke length.Pump drives may be fitted with packed plunger(column valve), disc diaphragm, or tubular dia-phragm (double diaphragm) liquid ends. Thismanual covers the mechanically adjusted drivefitted with a packed plunger liquid end.

PRINCIPLE OF OPERATIONThe drive unit moves the pump plunger to

draw liquid into the liquid end on the suctionstroke and to expel the liquid on the subsequentdischarge stroke. Accurate flow control is achiev-able only if the discharge line pressure (dischargehead) is greater than the suction line pressure(suction head).

The unique Milroyal B pump drive mechanismoperates on a patented polar crank principle. Es-sentially, a crank driven by a worm gear rotates

on a variable plane. As the crank plane ischanged from vertical, a reciprocating motionresults from the crank connection to the plunger.Pump stroke length is increased from zero tomaximum by adjusting the slope of the crankplane from vertical. (See Figure 2).

As the plunger reciprocates in the liquid end,the pumped liquid is alternately drawn into anddischarged from the liquid end. Each suction (rear-ward) stroke of the pump plunger creates a nega-tive pressure in the displacement chamber. Thepressure of the liquid in the suction line unseatsthe suction ball-checks and liquid flows into thedisplacement chamber. On the discharge stroke,the plunger moves forward and pressurizes the liq-uid which unseats the discharge ball-checks toflow out the discharge port. On each suctionstroke, the discharge ball-checks are seated, andon each discharge stroke, the suction ball-checksare seated (pressure in pump head is greater thansuction line pressure). This mode of operation pre-vents back flow and ensures liquid movementform the suction port, through the displacementchamber, and out the discharge port.

In packed plunger liquid ends, the plungercontacts the process liquid, while diaphragm liq-uid ends isolate the process liquid from the pumpplunger. In the latter designs, the plunger dis-places hydraulic fluid which moves a diaphragmin contact with the process liquid, forcing the

SECTION 1DESCRIPTION

Figure 2. Capacity Adjustment.

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UNPACKINGPumps are shipped f.o.b. factory and title

passes to customer when carrier signs for receiptof pump. The customer, therefore, must file anydamage claims with the carrier.

Carefully examine the shipping crate upon re-ceipt form carrier to be sure there is no obviousdamage to contents. Open the crate carefully, asaccessory items fastened to the inside of thecrate may be lost or damaged. Examine all mate-rial inside crate and check against packing list tobe sure that all items are accounted for and un-damaged.

MOUNTINGSupport the pump firmly in a level position

(shim if necessary) on a solid, vibration-free foun-dation, preferably with the base above floor levelto protect if from washdowns and to provideeasier access for service. The pump featuresmounting holes to accommodate anchor bolts.

Some Milroyal pumps are shipped with motorsdismounted. After anchoring pump drive in posi-tion, install motor.

PIPINGGeneral Rules

Never connect rigid pipe to plastic liquid ends;rather, use flexible connections to both suctionand discharge.

Use piping materials that will resist corrosionby the liquid being pumped. Use care in selectingmaterials to avoid galvanic corrosion at pump liq-uid end connections.

Use piping heavy enough to withstand maxi-mum pressures.

Size piping to accommodate peak instanta-neous flow. Because of the reciprocating motionof the pump plunger, pump delivery follows anapproximate sine curve with a peak instanta-neous flow pi (3.14) times the average flow.Therefore, piping must be designed for a flow3.14 times the pump capacity; this means that apump rated for 88 gallons per hour requires pip-ing sufficient for 99 gph (33.1 L/hr.) x 3.14 (or276) gph (1044.7 L/hr.).

To minimize viscous flow losses, pipe viscousliquids with line up to four sizes larger than thepump port. (See Appendix.)

Remove burrs, sharp edges, and debris frominside piping. Blow out all pipe lines before mak-ing final connections to pump.

Provide for pipe expansion when hot liquidsare to be pumped. Support piping so that pipeweight is not placed on the pump. Never springpiping to make connections.

Piping should be sloped to prevent vaporpockets, because vapor in the liquid end willcause inaccurate pump delivery.

When pumping suspended solids (such as slur-ries), install plugged crosses at all 90-degree lineturns to permit line cleaning without dismantlingpiping.

Suction PipingIt is preferable to have the suction of the pump

flooded by locating the liquid end below the low-est level of the liquid in the supply tank. Installinga hold-up tower or supply vessel on the suctionline close to the pump can help ensure a floodedsuction line. (Consult Milton Roy Company, FlowControl Division for assistance in such applica-tions).

Avoid negative suction pressure conditions(suction lift), as such conditions adversely affectmetering accuracy. If such conditions are un-avoidable, contact Milton Roy Flow Control Divi-sion for recommendations.

When pumping a liquid near its boiling point,provide enough suction head to prevent the liquidfrom “flashing” into vapor when it enters thepump liquid end on the suction stroke.

If possible, use metal or plastic tubing for thesuction line because tubing has a smooth innersurface and can be formed into long, sweepingbends to minimize frictional flow losses.

The strainer should be used in the suction lineto prevent foreign particles form entering the liq-uid end. This and any other measures which pre-vent debris from entering and fouling the ball-checks will give increased maintenance-free ser-vice. Check strainer frequently to prevent block-age which could lead to cavitation.

SECTION 2INSTALLATION

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Keep suction piping as short and straight aspossible.

When suction piping is long, and particularly atstroke speeds above 70 strokes per minute (spm),piping size should be larger than the liquid end suc-tion fitting to prevent pump starvation.

If long suction lines are unavoidable, install afloat box (See Figure 3) or auxiliary feed tank(stand pipe) near the suction side of the pump. Thefloat box may be calibrated and used to checkpump capacity by measuring the time required forpumping a specific quantity of liquid from the box.In many cases, installing an accumulator or pulsa-tion dampener at the pump suction connectionwill promote flooded suction even when the suc-tion line is long. Consult Milton Roy Flow ControlDivision for details.

Suction piping must be absolutely airtight to en-sure accurate pumping. After installation, test suc-tion piping for leaks with air and soap solution.

Discharge pipingInstall pipe large enough to prevent excessive

pressure losses on the discharge stroke of thepump. Maximum pressure at the discharge fit-ting on the liquid end must be kept at or belowthe maximum pressure rating shown on thepump nameplate.

The pump will not deliver a controlled flowunless the discharge line pressure is greater than

the suction line pressure. Piping should be ar-ranged to provide at least 5 psi positive pressuredifferential between the discharge side and thesuction side. There are a number of ways to cre-ate an artificial discharge pressure, such as by in-stalling a vented riser or a back pressure valve.(Please consult Milton Roy Flow Control Divisionfor recommendations to increase back pressurein slurry applications.)

When pumping water-treating chemicals di-rectly into boiler drums, use one liquid end as-sembly for each boiler drum, Discharging into amanifold having the slightest pressure differencebetween its several discharge connections candiminish metering accuracy as the outlet with thelowest pressure will receive more liquid than theother outlets.

Vented RisersA vented riser (Figure 4) is simply a vertical ex-

tension of the discharge pipe into an open tee.The other side of the tee goes to the process.Practically maintenance-free, this device preventssiphoning and reduces pulsations; however, aclogged or closed line may cause the riser to over-flow. Therefore, substitute a pulsation dampenerand back pressure valve for a vented riser whenpumping hazardous liquids.

Figure 3. Float Box. Figure 4. Vented Riser.

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Pulsation Dampeners(Accumulators, Surge Chambers, etc.)

An accumulator, surge chamber, surge sup-pressor, or pulsation dampener should be usedwith the back pressure valve in the discharge lineto absorb the flow peaks between the pump andthe back pressure valve. Without the pulsationdampener the valve mechanism will snap openand closed with the surge from each pump stroke.The pulsation dampener will allow the back pres-sure valve to oscillate about a partly-closed posi-tion, thus minimizing wear on the valve. Dischargeline pulsation dampeners offer the further advan-tage of limiting the flow and pressure variationscharacteristic of this performance and may reducesystem costs dramatically by permitting the substi-tution of smaller piping. Please contact Milton RoyCompany for further information on pulsationdampeners.

Back Pressure ValvesA Milton Roy back pressure valve should be in-

stalled in the discharge line near the pump to en-sure sufficient discharge head pressure for properpump metering action. Normally, the valve should

be located near the pump; however, back pressurevalves for large pumps with long and extremelysmall discharge lines may have to be installed nearthe point of discharge into the process (to minimizesiphoning tendencies).

Safety ValvesMotor-driven positive displacement pumps

can develop tremendous discharge pressureslong before thermal overload devices interruptthe motor electrical circuit. To prevent a blockeddischarge line form causing damage to thepump, piping, or process equipment, install aMilton Roy Safety Valve in the pump dischargeline. This valve is designed and sized to handlesystem flow rates and pressures safely while re-sisting corrosion by the process liquid.

Install the safety valve in the discharge line be-tween the pump and the nearest shut-off valve.(This will prevent pump damage from accidentalvalve closure.) Pipe the safety valve outlet back tothe suction tank or to drain, but in either caseensure that the pipe end is continuously visible sosafety valve leakage may be detected.

Figure 5. Safety & Back Pressure Valves.

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Check ValvesA check valve should be installed at the point

where the discharge line enters a boiler or otherhigh-pressure vessel. This will prevent back flowthrough the discharge piping and will isolate thepump discharge from system pressures (a safetyconsideration).

Shut-Off ValvesProvide shut-off valves in both suction and dis-

charge lines next to the pump. Locate dischargeline shut-off valve downstream from the inletconnection of the safety valve. Figure 8 showsrecommended valve locations.

Pumping Concentrated (95-100%)Sulfuric Acid

Packed plunger pumps are not recommendedfor this service. Diaphragm liquid end applica-tions are covered in Diaphragm Liquid End In-struction Manuals.

SERVICE CONNECTIONSPump Drive

Check the nameplate data on the pump drivemotor and insure proper power supply is avail-able before making any connections.

The preferred motor shaft rotation is shown byan arrow on the drive side flange of the pump(see Figure 10). If necessary, motor can be run inthe opposite direction, but connecting rod setscrews (405-A) should be first checked for tight-ness. This added precaution will ensure that re-versed directional stresses do not loosen the ten-sion bearings. To reverse motor rotation, reversemotor lead connections.

For drives other than constant speed electricmotors, refer to manufacturer’s instructions andservice information included with pump.

Stuffing BoxThe stuffing box is designed to handle most

clear, free-flowing liquids; however, liquids withsuspended solids and abrasives (e.g., certain slurry

Figure 6. Recommended Valve Locations.

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and phosphate solutions) tend to precipitate in thepacking, causing abnormal wear on packing andplunger. An internal flushing connection usedwith a V- or chevron-type packing will minimizethis tendency and increase packing an plunger lifein these applications.

To connect for internal flushing, remove thestuffing box grease fitting and connect the stuff-ing box to a source of water (or other compatibleliquid) at 25 to 50 psig (172 to 345 kPa) abovesuction pressure. Since only a few drops perminute are necessary, small diameter tubing willsuffice. Install a 1/8" or 1/4" NPT stainless steel air-craft hydraulic system check valve on the flushline right next to the stuffing box connection tokeep the process liquid from backing up throughthe flush line if the packing should fail. A 1/8" or1/4" (3.2 or 6.4 mm ) needle valve should be in-cluded for controlling the flushing liquid flowrate.

On each discharge stroke, some of the liquidbeing pumped is forced into the packing; on eachsuction stroke, the packing relaxes and allowsflushing liquid to travel along the plunger to helpflush out particles.

Through flush connections to carry hazardousor undesirable fluids from the stuffing box can be

provided for by drilling and tapping the stuffingbox during manufacture. In these installations,the flushing liquid is piped away form the stuff-ing box to a drain or other suitable disposal point.For specific instructions concerning field installa-tion of through flushing, consult Milton RoyCompany and provide full details of the applica-tion.

DrainsProvide drains convenient to the pump so that

any leakage may be easily removed. The pumpcatchall area is provided with a hole drilled andtapped to receive piping for drainage. A plastic fun-nel is also supplied with each Milroyal packedplunger pump to help direct corrosive liquid awayfrom catchall metallic surfaces.

Auxiliary (Accessory) EquipmentServe connections for auxiliary or accessory

electrical equipment should at compressor) plantair supply or the power elements and an instru-ment air signal from a control instrument or froma manual air pressure regulator (30 psig (207 kPa)pressure is required for the control instrument orregulator).

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Pump will not operate. . . . . . . . . . . . . . . . . . . • Liquid level is low. Add liquid.• Blocked discharge line. Clear line.• Liquid is frozen. Thaw liquid through pumping system.• Fuse is blown. Replace fuse.• Open thermal overload device in starter. Reset device.• Broken wire. Locate and repair.• Low voltage. Investigate and correct (wiring may be too

light).• Pump not primed. Allow suction line and pump head to

fill with liquid before pumping against pressure.

Insufficient delivery. . . . . . . . . . . . . . . . . . . . . . . • Incorrect capacity adjustment. Readjust capacity setting.• Incorrect pump speed. Match line voltage and frequency

to pump motor data plate.• Starved suction. Increase piping size or suction head.• Leaky suction piping. Repair piping.• High suction lift. Rearrange equipment to decrease lift.• Liquid near boiling. Cool liquid or increase suction head.• Leaky packing. Adjust or replace packing.• Leaky safety valve in discharge line. Repair or replace

safety valve.• High liquid viscosity. Reduce viscosity (e.g., heat or dilute

liquid).• Worn or dirty check valve seats. Clean or replace

Erratic delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . • Leaky suction piping. Repair piping.• Leaky packing. Adjust or replace packing.• Leaky safety valve. Repair or replace safety valve.• Insufficient suction head. Raise suction tank level or

pressurize tank.• Liquid near boiling. Cool liquid or increase suction head.• Worn or dirty valve seats. Clean or replace.• Clogged or dirty line strainer. Clean strainer.

Motor overheating. . . . . . . . . . . . . . . . . . . . . . . • Totally enclosed and explosion proof motors run hotterthan open motors.

• Wrong or insufficient gear case lubricant. Check oil leveland type. Replace questionable lubricant.

• Tight or dry packing. Adjust and lubricate packing.• Operation beyond rated capacity. Constrain operation to

specifications.• Incorrect power supply. Match line voltage and fre-

quency to pump motor data plate.• Misalignment. Check alignment of moving parts.• Over-tightened bearing adjuster. Remove and properly

reinstall bearing adjuster.

SECTION 4TROUBLESHOOTING GUIDE

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Oil leakage around worm shaft. . . . . . . . . . • Damaged or worn oil seal. Replace seal.

Oil leakage around trunnion. . . . . . . . . . . . . • Insufficient Loctite™® applied at assembly. Disas-semble pump and reassemble using Loctite®.

Oil leakage around crosshead. . . . . . . . . . . . • Damaged or worn seal. Replace seal.

Incorrect zero stroke indication. . . . . . . . . . . • Maladjusted stroke adjusting micrometer hand knob.Set pump to zero stroke. (At zero stroke, minimumplunger travel occurs when motor is running.) Loosenstroke adjusting hand knob setscrew, set hand knob tozero, and retighten setscrew.

Minimum stroke limitation. . . . . . . . . . . . . . . • Misaligned gear housing. Disassemble pump and reas-semble properly aligned.

Gear noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • Excessive backlash. Adjust backlash or replace gears.• Incorrect worm shaft lateral running clearance. Adjust

shaft lateral running clearance.• Worn bearings. Replace bearings.• Wrong or insufficient lubricant. Replace or replenish lu-

bricant.

Loud knock with each stroke. . . . . . . . . . . . . • Insufficient torque on trunnions. Re-torque trunnions.• Loose crank nut. Tighten nut.• Loose or worn connecting rod tension bearings. Tighten

or replace bearings.• Worn conical sleeve bearings. Replace bearings.• Excessive gear set wear. Replace gear set.

Rocking gear housing. . . . . . . . . . . . . . . . . . . . • Worn stroke adjusting screw or keys. Replace worn parts.

Crosshead hesitation. . . . . . . . . . . . . . . . . . . . . • Loose tension bearing. Remove and inspect connectingrod; reinstall or replace and secure tension bearing.

Crosshead rotation. . . . . . . . . . . . . . . . . . . . . . . • Dog point set screw not seated in crosshead slidingscrew. Remove crosshead, examine for scoring; polishsmooth and reinstall.

Worn connecting rod bearings. . . . . . . . . . . • Contaminated oil. Replace worn parts and oil andchange oil on schedule.

• Plugged connecting rod. Clear rod.• Faulty relief valve. Replace relief valve.• Fouled or missing ball checks in forced feed lube system.

Clean or install ball checks.

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DrawingLocation Description Qty.

Req.DrawingLocation Description Qty.

Req.201 Support 1 404-X Lockwasher 4206 Lantern Ring 1 405-E Jack Bolt 1

208-B Gland Cap 1 405-G Jam Nut 1212-A Plunger Assembly 1 405-H Bolt 4221-D Liquid End (Screwed) 1 405-J Nut 4221-J Check Valve Assembly 2 405-V Cover Screw 2221-N Check Valve Body 2 405-X Adapter Bolt 4224-D Upper Seat 2 405-7 Bolt 4224-E Lower Seat 2 407-5 Ball Check 4244 Follower Gland 1 407 Grease Fitting 1

272-B Plunger Adapter 1 408-C Seal 1272-E Extension Piece 1 408-E Packing 3Z\x x 4Z\v x 1Z\, 1281-E Extension Piece Cover 1 408-G Hole Cover 1292 Limit Pin 2 402-L Pipe Bushing 2

407-J Drain Plug 1 402-K Pipe Plug 1404-B Lockwasher 8

26

Dwg.Loc. Description Qty.

Req.Dwg.Loc. Description Qty.

Req.204 Motor Supp. Brkt. (Ft. Mtd. Motor) 1 404-B Lockwasher (Ft. Mtd. Motor) 4210 Crosshead 1 405-A Set Screw (Conn. Rod) 4

210-A Crosshead Assembly 1 405-B Set Screw (Stroke Stop) 1211-A Key (Lead Screw) 2 402-P Plug (Drain & Oil Level) 2211-B Key Crank) 1 405-D Nut (Sliding Shoe) 1211-C Key (Worm Shaft) 1 405-E Nut (Crank) 1211-D Key (Motor) 1 405-G Set Screw 1214 Connecting Rod Assembly 1 405-H Set Screw (Sliding Shoe) 1216 Crank 1 405-J Set Screw (Handknob Micro Adj) 2

237-A Bearing (Crosshead) 1 405-L Mounting Bolt (Flange Mtr.) 4237-B Trunnion (Closed) 1 405-M Mounting Bolt (Mtr. Adapt Flng) 4237-C Trunnion (Open) 1 405-O Mounting Bolt (Foot Mtd. Motor) 4237-D Bearing Adjuster 1 405-AH Mounting Screw (Cover) 4237-E Bearing (Tension) 2 405-AK Stick Screw 4237-H Conical Sleeve Bearing Trunnion 2 405-AL Set Screw (Lead Screw Key Lock) 2252-J Gear Set (Single Ext. Worm Shaft) 1 405-AM Stroke Locking Screw 1252-K Gear Set (Double Ext. Worm Shaft) 1 406-A Magnet 1253 Caution Sticker (See Note 3) 1 407 Loctite ̈Threadlocker A/R

253-A Nameplate 1 407-A Ball Check (Crosshead) 1253-C Stroke Indicator Plate (Micro. Adj.) 1 407-B Relief Valve 1255-A Handknob Assy. (Micro Adj.) 1 407-C Pipe Sealant A/R256-A Stroke Adj. Screw (Std. Adj.) 1 408-A O-Ring (Stroke Adj. Screw) 1

261 Shoe (Sliding) 1 408-B Shaft Seal (Worm Shaft) 1272-A Adaptor (Flange Motor) 1 408-C Crosshead Seal 1280-E Spring (Crosshead) 1 409 Bearing (Tapered) 2281-A Housing (Gear) 1 410 Coupling (Motor) 1281-B Casing 1 410-A Coupling (Connecting) 1281-C Drive Cover w/Breather Assy. 1 402-R* Street Elbow 1407-D Breather 1 405-P* Cap Screw 1281-D Catchall Cover w/Breather Assy. 1 410-A* Coupling 1281-L Catchall Cover w/Clips 1 249* Guard 1404-A Lockwasher (Mtr. Flange & Adapt) 4 211-C* Key (Worm Shaft) 1

Notes: (1) Thin application of moly-type grease to be applied to 237-H sleeve bearing during assembly. (2) Items supplied only with micrometer stroke adjustment are indicated by a * * (double astrisk). (3) Caution Sticker (253) supplied with liquid end assembly. (4) Additional parts for multiplex pumps are indicated by a * (single astrisk).

29

TABLE OF EQUIVALENTS

1 atmosphere equals 1.0333 kilograms/square centimeter101.33 kilopascals1.0135 bars

1 Btu/hour equals 0.2928 Watts

Degrees Fahrenheit equals 1.8° Celsius + 32

1 Engler degree equals 7.45 square millimeters/second

1 foot equals 30.48 centimeters12 inches

1 Ford cup #4 equals 3.76 square millimeters/second

1 gallon (U.S.) equals 0.1337 cubic feet0.8333 Imperial gallons3.785 liters4 quarts

1 gallon/hour (U.S.) equals 0.003785 cubic meters/hour0.002228 cubic feet/minute

1 horsepower equals 745.7 Watts

1 inch equals 2.540 centimeters

1 inch of mercury equals 0.03442 kilograms/square centimeter3376.5 Pascals0.4897 pounds/square inch

1 pint (liquid) equals 0.4732 liters16 ounces

1 pound/square inch equals 0.06804 atmospheres0.06897 bars0.07029 kilograms/square centimeter6894.8 Pascals

1 Redwood Admiralty equals 2.340 square millimeters/second

1 Redwood Standard equals 0.237 square millimeters/second

1 Saybolt Furol equals 2.16 square millimeters/second

1 Saybolt Second Universal equals 0.216 square millimeters/second