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Warnings 

4

3A1190H

SKIN INJECTION HAZARD

High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event 
that injection occurs, 

get immediate surgical treatment.

Do not aim the gun at, or spray any person or animal.

Keep hands and other body parts away from the discharge. For example, do not try to stop leaks with 
any part of the body.

Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.

Use Graco nozzle tips.

Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip clogs while 
spraying, follow the 

Pressure Relief Procedure

 for turning off the unit and relieving the pressure 

before removing the nozzle tip to clean.

Equipment maintains pressure after power is shut off. Do not leave the equipment energized or under 
pressure while unattended. Follow the 

Pressure Relief Procedure

 when the equipment is unat

tended or not in use, and before servicing, cleaning, or removing parts.

Check hoses and parts for signs of damage. Replace any damaged hoses or parts.

This system is capable of producing 3000 psi. Use Graco replacement parts or accessories that are 
rated a minimum of 3000 psi.

Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.

Verify that all connections are secure before operating the unit.

Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the controls.

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

Always wear appropriate gloves, eye protection, and a respirator or mask when painting.

Do not operate or spray near children. Keep children away from equipment at all times.

Do not overreach or stand on an unstable support. Keep effective footing and balance at all times.

Stay alert and watch what you are doing.

Do not operate the unit when fatigued or under the influence of drugs or alcohol.

Do not kink or over-bend the hose.

Do not expose the hose to temperatures or to pressures in excess of those specified by Graco.

Do not use the hose as a strength member to pull or lift the equipment.

Do not spray with a hose shorter than 25 feet.

Do not alter or modify equipment. Alterations or modifications may void agency approvals and create 
safety hazards.

Make sure all equipment is rated and approved for the equipment in which you are using it.

PRESSURIZED ALUMINUM PARTS HAZARD

Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical 

reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or prop

erty damage.

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or flu
ids containing such solvents.

Do not use chlorine bleach.

Many other fluids may contain chemicals that can react with aluminum. Contact your material supplier 
for compatibility.

WARNING

WARNING

WARNING

Summary of Contents for 331861

Page 1: ...only Airlessco Home Depot LP540 Hi Boy 331861 Series B 3000 psi 20 7 MPa 207 bar Maximum Working Pressure IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manual Be familiar wi...

Page 2: ...f electric shock When repair or replacement of the cord or plug is required do not connect the grounding wire to either flat blade terminal The wire with insulation having an outer surface that is gre...

Page 3: ...or conductive Connect to a grounded outlet and use grounded extension cords Do not use a 3 to 2 adapter Do not use a paint or a solvent containing halogenated hydrocarbons Do not spray combustible li...

Page 4: ...to stop the unit and bleed pressure quickly Be thoroughly familiar with the controls EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury Always wear appropriate gloves eye protection and...

Page 5: ...know the specific hazards of the fluids you are using Store hazardous fluid in approved containers and dispose of it according to applicable guidelines PERSONAL PROTECTIVE EQUIPMENT Wear appropriate...

Page 6: ...pump and relieves pressure from gun hose and tip D Prime Pressure Relief Valve Open Posi tion Relieves pressure from gun hose and tip and primes the unit when in the open position Valve is in open po...

Page 7: ...pressure If the spray tip or hose is clogged follow Steps 1 through 5 above Expect paint to splash into the bucket while relieving pressure during Step 4 If you suspect that pressure hasn t been reli...

Page 8: ...e storing and before repairing equipment Flushing 1 Make sure the gun trigger lock in engaged and there is no spray tip in the gun Refer to the separate instruction manual provided with gun for safety...

Page 9: ...emove the suction tube or pump from the solvent pail force the solvent from the pump and hose Engage the gun trigger lock See Storage 10 13 Whenever shutting down the sprayer follow Pres sure Relief P...

Page 10: ...r Airlessco Pump Conditioner For oil base paint flush with mineral spirits For water base paint flush with water then min eral spirits and leave the pump hose and gun filled with mineral spirits Long...

Page 11: ...e brush wire 5 Pull out the wire 6 Remove the worn brushes 7 Install new brushes in the reverse order To increase brush life new brushes Part 331780 for 110 volt need to have a run in period After cha...

Page 12: ...0 ft lbs 4 Reassemble lower suction valve assembly by plac ing the suction seat O ring suction ball and suction ball guide in the suction nut 7 and screw onto fluid pump body 5 Reconnect the fluid tub...

Page 13: ...y 6 Disassemble all parts and clean for reassembly Discard any old packings 7 Lubricate leather packing in lightweight oil for 10 minutes prior to reassembly Reassembly of the Fluid Pump 1 Place lower...

Page 14: ...position hold the pump body upside down and push the completed assembly upwards into the pump body Once placed inside tilt pump body back up to keep all pieces in 17 Tighten packing nut 21 onto the to...

Page 15: ...ench 4 Reassemble in reverse order Torque to 30 ft lbs Potentiometer 1 Lower pressure control assembly as described above 2 Disconnect potentiometer lead from pressure con trol assembly 3 Use a 1 16 a...

Page 16: ...f unable to loosen the two nuts hold them and unscrew the two screws Then remove the LCD Dis play Assembly 4 Reassemble in reverse order while making sure that the two spacers and the two washers are...

Page 17: ...s and or piston worn Tighten packing nut repack unit Unit does not maintain good spraying pressure Blown spray tip Replace spray tip Packings and or pistons worn Repack unit Upper seat worn Replace up...

Page 18: ...t sensor available use a multi meter to test the resistance across the red and black wires of the sensor be sure to test the plug You should read 1 5 3 5k ohms A faulty sensor usually reads no continu...

Page 19: ...times repeatedly Sprayer shuts down and LED continues to blink four times repeatedly Pressure transducer is faulty or missing Check transducer connection Open prime pressure relief valve Substitute n...

Page 20: ...ure transducer faulty bad connection or broken wire Check transducer connection Open prime pressure relief valve Substitute new transducer for transducer in sprayer If sprayer runs replace transducer...

Page 21: ...lar deflected Orifice clogged Clean carefully Tip damaged Replace with new tip Craters or pock marks bubbles on work Solvent balance Use 1 to 3 short solvents remainder long sol vents this is most lik...

Page 22: ...art Description Qty Ref Part Description Qty 1 867145 COVER 1 6 867077 BASE 1 2 301356 SPRING 1 7 867420 PLUG 2 3 867377 O RING 1 9 867309 NIPPLE 3 8 M x 1 4 M 1 4 867214 FILTER 60 MESH 1 10 557391 PL...

Page 23: ...9 331029 SUCTION BALL GUIDE 1 10 331030 SUCTION BALL 1 11 108526 O RING 1 12 331292 SUCTION SEAT HI BOY 1 13 331034 SUCTION NUT 1 8 9 10 11 12 13 ti16055a 1 4 6 5 8 7 Ref Part Description Qty 1 PISTO...

Page 24: ...0RPM 1 2 331273 FRAME LP540 HD 1 3 16F551 FASTENER THREAD EXTERNAL 4 4 866356 SPACER SPACER 75 LG PVC 2 5 106062 WHEEL SEMI PNEUMATIC 2 6 143029 COLLAR SCREW SET 2 7 331048 BOOT RUBBER BOOT 2 65 34244...

Page 25: ...ETR ASSEMBLY 1 26 867804 LABEL CONTROL LP 1 27 867798 DISPLAY WINDOW 1 30 116167 KNOB POTENTIMETER 1 33 867965 CONTROL BOARD 120V 1 34 331342 SCREW MACH PANHEAD 4 76 866049 CABLE ASSY 9 LG 1 92 WASHER...

Page 26: ...26 3A1190H Motor and Drive Parts Diagram 1 35 36 37 39 40 41 43 44 45 46 47 47 48 48 49 51 114 55 56 57 58 59 60 61 63 66 67 70 71 73 8 10 89 18 18 11 14 16 32 9 15 34 12 13 42 156 213 31 13 112 72 ti...

Page 27: ...SLEEVE BEARING not shown 1 35b 331234 COVER BARE not shown 1 35c 331046 BEARING not shown 1 36 331047 BEARING BALL 1 37 331593 GEAR CRANK 29 ASSEMBLY 1 39 331038 YOKE CROSSHEAD ASSY 1 40 331074 SPACER...

Page 28: ...Parts 28 3A1190H Packing Replacement 6 7 27 11 12 13 15 4 21 14 26 1 1 3 23 23 2 2 2 24 25 16 16 16 20 17 19 22 18 5 ti16057a...

Page 29: ...26 OUTLET SEAT 1 12 111457 O RING 1 13 331027 OUTLET BALL 1 14 PISTON 1 15 331018 SPACER 1 16 331025 BELLEVILLE SPRINGS 3 17 331022 MALE GLAND 1 18 331023 PACKING POLYETHYLENE 3 19 331021 FEMALE GLAND...

Page 30: ...ti16059a ti16061a Standard Suction Assembly 331284 Ref Part Description Qty 1 301348 BYPASS HOSE ASSEMBLY 1 2 331034 SUCTION NUT 1 3 331292 SUCTION SEAT ASSEM BLY 1 4 331400 INLET TUBE 1 Optional Suct...

Page 31: ...k Black Black ti2471b 1 3 5 6 7 9 Ref Part Description Qty Ref Part Description Qty 1 331163 ELECTRICAL CORD110V 1 6 243222 KIT REPAIR TRANSDUCER 1 3 301083 TOGGLE SWITCH 1 7 256219 POTENTIOMETER 1 5...

Page 32: ...3 4 5 7 6 Ref Part Description Qty Ref Part Description Qty 1 867816 SCREW 2 5 867817 NUT 2 2 867804 LABEL PRESSURE CONTROL 1 6 LCD DISPLAY PSI 1 3 867798 WINDOW 1 7 867731 WASHER 2 4 117281 SPACER 2...

Page 33: ...n toggle switch ON and adjust to low pressure on the pressure control knob The unit will now self prime STEP 4 4A Wait about one minute until fluid comes out of the return tube smaller diameter tube 4...

Page 34: ...o prepared bucket of water or mineral spirits STEP 3 Release the gun trigger lock very carefully 3A Turn the Prime PR Valve to be closed position Adjust the pressure control knob for minimum pressure...

Page 35: ...00 w minimum Maximum delivery 0 57 gpm 2 2 lpm Maximum tip size 0 025 Fluid outlet npsm 1 4 in Noise Sound power 91 dBa Sound pressure 75 dBa Wetted parts zinc and nickel plated carbon steel nylon sta...

Page 36: ...efective parts The equipment will be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be ma...

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