Graco Series A Operation manual

308815

Rev. J

INSTRUCTIONS-PARTS LIST

INSTRUCTIONS

This manual contains important

warnings and information.

READ AND KEEP FOR REFERENCE.

Displacement Pump

Used in the Ultra Max 695 Sprayers

3000 psi (207 bar, 21 MPa) MAXIMUM WORKING PRESSURE

Model 243189, Series B

Model 239769, Series A

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Graco Inc. is registered to I.S. EN ISO 9001

9672A7738A

Model 239769 Model 243189

Parts

2308815

WARNING

INJECTION HAZARD

Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely

serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also

cause serious injury.

Fluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious

injury. Get immediate medical attention.

Do not point the gun at anyone or at any part of the body.

Do not put your hand or fingers over the spray tip.

Do not stop or deflect leaks with your hand, body, glove or rag.

Do not “blow back” fluid; this is not an air spray system.

Always have the tip guard and the trigger guard on the gun when spraying.

Check the gun diffuser operation weekly. Refer to the gun manual.

Be sure the gun trigger safety operates before spraying.

Lock the gun trigger safety when you stop spraying.

Follow the Pressure Relief Procedure on page 4 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

Tighten all fluid connections before operating the equipment.

Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do not

repair high pressure couplings; you must replace the entire hose.

Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by

kinks or bends near the couplings.

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,

inhaled, or swallowed.

Know the specific hazards of the fluid you are using.

Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer.

MOVING PARTS HAZARD

Moving parts can pinch or amputate your fingers.

Keep clear of all moving parts when starting or operating the pump.

Before servicing the equipment, follow the Pressure Relief Procedure on page 4 to prevent the

equipment from starting unexpectedly.

308815 3

WARNING

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

This equipment is for professional use only.

Read all instruction manuals, tags, and labels before operating the equipment.

Use the equipment only for its intended purpose. If you are not sure, call your distributor.

Do not alter or modify this equipment. Use only genuine Graco parts.

Check equipment daily. Repair or replace worn or damaged parts immediately.

Do not exceed the maximum working pressure of the lowest rated system component. Refer to the

Technical Data on page 9 for the maximum working pressure of this equipment.

Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-

nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.

Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or

fluids containing such solvents in pressurized aluminum equipment. Such use could result in a

chemical reaction, with the possibility of explosion.

Do not use hoses to pull equipment.

Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose

Graco hoses to temperatures above 82C (180F) or below –40C (–40F).

Do not lift pressurized equipment.

Comply with all applicable local, state, and national fire, electrical, and safety regulations.

Wear ear protection when operating this equipment.

FIRE AND EXPLOSION HAZARD

Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and

result in a fire or explosion and serious injury.

If there is any static sparking or you feel an electric shock while using this equipment, stop spray-

ing immediately. Do not use the equipment until you identify and correct the problem.

Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid

being sprayed.

Keep the spray area free of debris, including solvent, rags, and gasoline.

Electrically disconnect all equipment in the spray area.

Extinguish all open flames or pilot lights in the spray area.

Do not smoke in the spray area.

Do not turn on or off any light switch in the spray area while operating or if fumes are present.

Do not operate a gasoline engine in the spray area.

Ground the equipment and the object being sprayed.

4308815

Service

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT HAZARD

The system pressure must be manually

relieved to prevent the system from

starting or spraying accidentally. To

reduce the risk of an injury from accidental spray

from the gun, splashing fluid, or moving parts,

follow the Pressure Relief Procedure whenever

you:

are instructed to relieve the pressure,

stop spraying,

check or service any of the system equipment,

or install or clean the spray nozzle.

1. Engage gun safety latch.

2. Turn ON/OFF switch to OFF.

3. Unplug power cord.

4. Disengage gun safety latch. Hold metal part of gun

against grounded metal pail and trigger gun into

pail to relieve pressure.

5. Engage gun safety latch.

6. Open any fluid drain valves in system. Leave drain

valve open until ready to dispense again.

Repair Kit

Pump Repair Kit

243189, 239769 239939

Tools Needed

Vise

12 in. adjustable, open end wrench

15 in. adjustable, open end wrench

Hammer, 20 oz maximum

Small screwdriver

Throat Seal Liquid

Pick or long small screwdriver

Punch

Cleaning and Inspecting Parts

Clean and inspect parts. Pay particular attention to the

ball seats in the intake valve and piston, which must

have no nicks or wear, and to the inside of the cylinder

and the outside of the piston rod, which must not be

worn or scratched. Replace worn or damaged parts.

308815 5

Service

Disassembling the pump

Fig. 1. Remove packing nut (202) and throat

adjustment spacer (228).

ti9672b

Fig. 1

202

228

9672A

Fig. 2. Loosen jam nut (226). Remove manifold (229)

and the o-ring (221).

Fig. 2

229

221

226

9674A

Fig. 3. Unscrew cylinder from intake valve.

Fig. 3 9675A

Fig. 4. Disassemble intake valve. Clean and inspect.

O-ring (227) may require a pick for removal. Replace

o-ring (227).

Fig. 4

227

9676A

Fig. 5. Tap piston rod out of cylinder with a hammer or

on a bench top.

Fig. 5 9697A

6308815

Service

Fig. 6. Remove throat packings and glands from

manifold. Discard throat packings and glands.

Fig. 6 9678A

WARNING

COMPONENT RUPTURE HAZARD

Do not clean or wipe the piston valve

threads. Cleaning the piston valve

threads could destroy the plastic patch

and cause the piston valve to come loose during

operation, causing pump bursting and possible

serious bodily injury.

Fig. 7. Unscrew piston valve from piston rod. Clean

and inspect parts. The piston has a plastic sealing

patch. Do not remove the patch. The patch allows four

disassembly/assembly procedures before it is

necessary to apply Loctiteto the threads.

Fig. 7 9677A

Fig. 8. Remove packings and glands from piston rod.

Fig. 8 9680A

Reassembling the pump

Fig. 9. Soak all leather packings in SAE 30W oil for 1

hour minimum prior to assembly. Stack male gland

(219) on piston rod. Alternately stack UHMWPE (208)

and leather (218) packings (note orientation) on piston

rod. Install female gland (217). Install backup washer

(216) and u-cup (209) (note orientation) on piston

valve (210). The special sealing patch on piston valve

threads is good for four repackings. Use Loctiteon

piston valve threads after four repackings.

Fig. 9

216

218

209

208

219 217

210

9679A

Fig. 10. Install ball (206) in piston rod. If Loctiteis

used, ensure no Loctite gets on ball.

Fig. 10

206

9681A

308815 7

Service

Fig. 11. Tighten piston valve to piston rod as specified:

7768A

Fig. 11

Torque to 30 3 ft-

41 4.1 Nm

Fig. 12. Soak all leather packings in SAE 30W oil for 1

hour minimum prior to assembly. Place male gland

(204) in manifold. Alternately stack UHMWPE (203)

and leather packings (223) (note orientation). Place

female gland (224) in top of cylinder. Seat packings.

Fig. 12

223

224

203

204

9695A

Fig. 13. Install seal (201) into packing nut (202). Install

throat adjustment spacer (228) onto packing nut.

Loosely install packing nut into manifold. O-ring

replaces metal clip ring on older models.

9696b

Fig. 13

201

202

228

Fig. 14. Grease piston packings and top edge of

cylinder.

Fig. 14 9682A

Fig. 15. Carefully slide piston assembly into top of

cylinder. Assure u-cup is not rolled over or damaged.

Fig. 15 9683A

8308815

Service

Fig. 16. Install cylinder in intake valve. Tighten to 60

5 ft-lb (81 6.8 Nm).

Fig. 16 9684A

Fig. 17. Grease top inch or two of piston rod.

Fig. 17 7773A

Fig. 18. Install jam nut (226) onto cylinder. Grease

o-ring (221*) and place on cylinder. Install manifold

(229) onto cylinder (205) and tighten to 60 5 ft-lb (81

6.8 Nm). Tighten jam nut (226) to 75 5 ft-lb (101.7

6.8 Nm).

Fig. 18

205*

221*

226

229

9685A

Fig. 19. Torque seal and packing nut (202) down onto

throat nut spacer (228) to 75 5 in-lb (8.5 0.5 Nm)

or an additional 1/2 turn from hand tight.

Remove throat nut spacer (228) when pump packings

begin to leak. Tighten packing nut (202) until leakage

stops or lessens This allows approximately 100 gallons

of operations before repacking. O-ring replaces metal

clip ring on older models.

9686b

Fig. 19

202

228

308815 9

Service

223 203

218 208 V-MaxUHMWPE, blue

217

213

214

229

106

221

224

205

219

215

212

227

222

202

221

Fig 20

216

226

206

210

209

Leather

201

Cross Sectional Reference

V-MaxUHMWPE, blue

231

9687A

Technical Data

Working Pressure Range 0 – 3000 psi. . . . . . . . . . . . . .

(0 – 207 bar, 21 MPa)

Pump Inlet Size 3/4 npt(f). . . . . . . . . . . . . . . . . . . . . . . . .

Pump Outlet Size 1/4 npt. . . . . . . . . . . . . . . . . . . . . . . . .

Wetted Parts Aluminum, stainless steel,. . . . . . . . . . . .

zinc plated carbon steel, polyethylene,

acetal, PTFE, leather,

tungsten carbide, chrome plating, polyurethane

Graco Phone

Number

TO PLACE AN ORDER, contact your Graco distribu-

tor, or call this number to identify the distributor closest

to you: 1–800–690–2894 Toll Free

10 308815

Parts – Pump 243189

Model 243189, Series A

Displacement Pump

Includes items 201 to 231

Ref

No. Part No. Description Qty.

201 180656 SEAL, throat 1

202 193047 NUT, packing 1

203* 192710 V-PACKING, throat, 3

V-MaxUHMWPE, blue

204* 176754 GLAND, male, throat 1

205 243177 CYLINDER, pump 1

206* 105444 BALL, sst, 0.3125 in. 1

208* 192712 V-PACKING, piston 3

V-MaxUHMWPE, blue

209* 105522 SEAL, u-cup 1

210 243181 VALVE, piston 1

212*243190 KIT, seat, carbide 1

includes 214 and 227

213 196755 VALVE, intake (foot) 1

214*105445 BALL, sst, 0.5000 in. 1

215 196896 GUIDE, ball 1

216* 186652 WASHER, backup 1

217* 180073 GLAND, female, piston 1

218* 176749 V-PACKING, leather, piston 2

219* 195129 GLAND, male 1

221* 108526 O-RING, PTFE 2

222 243178 ROD, piston 1

223* 176755 V–PACKING, leather, throat 2

224* 176757 GLAND, female 1

226 195548 NUT, jam, 1–3/8–18 unef–2b 1

227* 195136 PACKING, o-ring 1

228 117459 O-RING, 1

(replaces 195368 metal clip ring)

229 237661 MANIFOLD, pump 1

230 192849 LABEL, warning 1

231195134 Spacer, ball guide 1

* These parts are also included in Repair Kit 239939,

which may be purchased separately. Kit also in-

cludes o-ring 104938 for Lo-boy suction tube.

These parts are also included in Carbide Kit

243190, which may be purchased separately.

ti9688b

*223

215

210

201

202

224*

203*

204*

205

221*

222

219*

214*

217*

218*

209*

212

227*

213

216*

*208

221*

228

206*

226

229

230

231

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