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Warnings

3A4347D

3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this 

equipment. The exclamation point symbol alerts you to a general warning and the hazard 

symbols refer to procedure-specific risks. When these symbols appear in the body of this 

manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols 

and warnings not covered in this section may appear throughout the body of this manual 

where applicable.

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help 

prevent fire and explosion:

Do not spray flammable or combustible materials near an open flame or sources of ignition 

such as cigarettes, motors, and electrical equipment.

Paint or solvent flowing through the equipment is able to result in static electricity. Static 

electricity creates a risk of fire or explosion in the presence of paint or solvent fumes. All parts 

of the spray system, including the pump, hose assembly, spray gun, and objects in and 

around the spray area shall be properly grounded to protect against static discharge and 

sparks. Use Airlessco conductive or grounded high-pressure airless paint sprayer hoses.

Verify that all containers and collection systems are grounded to prevent static discharge. 

Do not use pail liners unless they are anti static or conductive.

Connect to a grounded outlet and use grounded extensions cords. Do not use a 3-to-2 adapter.

Do not use a paint or a solvent containing halogenated hydrocarbons.

Do not spray flammable or combustible liquids in a confined area.

Keep spray area well-ventilated. Keep a good supply of fresh air moving through the area.

Sprayer generates sparks. Keep pump assembly in a well ventilated area at least 20 feet 

(6.1 m) from the spray area when spraying, flushing, cleaning, or servicing. Do not spray 

pump assembly.

Do not smoke in the spray area or spray where sparks or flame is present.

Do not operate light switches, engines, or similar spark producing products in the spray area.

Keep area clean and free of paint or solvent containers, rags, and other flammable materials.

Know the contents of the paints and solvents being sprayed. Read all Safety Data Sheets 

(SDS) and container labels provided with the paints and solvents. Follow the paint and 

solvents manufacturer’s safety instructions.

Fire extinguisher equipment shall be present and working.

Summary of Contents for 17M988

Page 1: ...epair Pump 17M990 17M991 PRO DUTY Pump 17M988 17M989 Important Safety Instructions Read all warnings and instructions in this manual and related manuals Be familiar with the controls and the proper us...

Page 2: ...Pump Removal 7 PRO DUTY Quick Repair Pump Removal 7 PRO DUTY Pump Removal 8 Repair 9 Disassemble Pump 9 Assemble Pump 10 Pump Installation 14 PRO DUTY Quick Repair Pump Installation 14 PRO DUTY Pump...

Page 3: ...ct against static discharge and sparks Use Airlessco conductive or grounded high pressure airless paint sprayer hoses Verify that all containers and collection systems are grounded to prevent static d...

Page 4: ...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 property damage D...

Page 5: ...rn the ON OFF switch to OFF position 3 Unplug power cord or shut engine off 4 Remove tip guard 5 Turn pressure control to the lowest set ting Disengage trigger lock This equipment stays pressurized un...

Page 6: ...fluid drain valves in system Leave drain valves open until ready to spray again 9 If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved a VERY SLOWLY loosen tip...

Page 7: ...UTY Quick Repair Pump Removal Perform Pressure Relief Procedure page 5 1 Use a hammer to loosen pump retaining nut 2 Turn pump retaining nut to free pump rod cover 3 Swing pump rod cover open 4 Discon...

Page 8: ...Pressure Relief Procedure page 5 3 If necessary remove guard or pail hook to gain access to the pump 4 Disconnect outlet hose and suction hose from pump 5 Use a screwdriver to push retaining spring u...

Page 9: ...pair pump retain ing nuts are not removable and not sold separately 3 Unscrew cylinder from intake valve 4 Disassemble intake valve Clean and inspect 5 O ring at the bottom may require a pick for remo...

Page 10: ...d seat Replace if necessary O ring at the bottom may require a pick for removal 11 Remove and discard the upper throat packing with glands from the cylinder Remove and discard the lower packing with g...

Page 11: ...r and install in piston When thread sealant is applied to piston valve threads ensure that none gets on the ball e Torque to 175 15 in lb 20 2 N m 3 Assemble upper throat packing stack Use leather thr...

Page 12: ...and brown V packings 7 Grease both piston rod diameters that will go through the packings Gently guide displacement rod up through pack ings Tap bottom of piston valve as nec essary with a leather or...

Page 13: ...lug from power source OR Turn engine driven sprayers OFF Tighten packing nut and intake valve housing down an additional 1 2 1 turn This should stop or lessen leakage This allows approximately 50 gall...

Page 14: ...into the drive housing 3 Slide pump all the way into drive hous ing 4 Close pump rod cover Make certain that it is flush against drive housing 5 Use both hands to tighten pump retain ing nut 6 Use a...

Page 15: ...p are flush with drive housing face Back off pump and jam nut to align pump outlet to side Tighten jam nut by hand then tap 1 8 to 1 4 turn with a hammer to approximately 75 5 ft lb 102 N m 4 Connect...

Page 16: ...Parts 16 3A4347D Parts 13 7 6 12 19 20 4 2 8 17 10 18 16 22 25 24 21 23 11 5 ti29881a...

Page 17: ...5 VALVE intake hous ing 1 13 17P097 KIT guide ball assembly includes 16 18 1 16 16D531 O RING 1 17 17J187 O ring special pis ton seat 1 18 17S053 O RING 1 19 125724 V PACKING piston V MaxTM UHMWPE 3 2...

Page 18: ...um fluid working pressure 3300 psi 227 bar 22 7 MPa Inlet Outlet Sizes Fluid inlet size 1 0 in diameter Fluid outlet size 1 4 in Wetted materials on all models stainless steel PTFE leather nylon zinc...

Page 19: ...clude the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRA...

Page 20: ...Airlessco reserves the right to make changes at any time without notice Original Instructions This manual contains English MM 3A4347 GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 U...

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