Graco 450 User Manual

Instructions–Parts List

CARBON STEEL

Check–Matet450 Pumps

WITH PRIMING PISTON, AND SEVERE–DUTY ROD AND CYLINDER

U.S. Patent Nos. 5,147,188 and 5,154,532.

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

Table of Contents

List of Models 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Symbols 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warnings 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service

Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Tools 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disconnecting the Displacement Pump 14. . . . . . . .

Reconnecting the Displacement Pump 15. . . . . . . .

Displacement Pump Service 16. . . . . . . . . . . . . . . . .

Parts 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data and Performance Charts 33. . . . . . . . . .

Dimensions 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting Hole Layout 47. . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Information 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 222768 Shown

308017W

0423A

List of Models

Maximum Air

Working Pressure

Model No. Description MPa bar psi MPa bar psi

222770 10:1 ratio Monarkr Pump, Series A

(UHMWPE/PTFE Packed)

235626 10:1 ratio Monarkr Pump, Series A

(PTFE Packed)

222768 20:1 ratio Presidentr Pump, Series A

(UHMWPE/PTFE Packed)

237207 20:1 ratio stubby Presidentr Pump,

Series A (UHMWPE/PTFE Packed)

246933 20:1 ratio Presidentr Pump, Series A

(Tuffstack Throat Packed)

222769 34:1 ratio Senatorr Pump, Series A

(UHMWPE/PTFE Packed)

224660 34:1 ratio Quiet Senatorr Pump,

Series A (UHMWPE/PTFE Packed)

237492 34:1 ratio stubby Senatorr Pump,

Series A (UHMWPE/PTFE Packed)

237780 34:1 ratio stubby Quiet Senatorr

Pump, Series A

(UHMWPE/PTFE Packed)

222778 55:1 ratio Bulldogr Pump, Series A

(UHMWPE/PTFE Packed)

222813 55:1 ratio Quiet Bulldogr Pump,

Series A (UHMWPE/PTFE Packed)

237208 55:1 ratio stubby Bulldogr Pump,

Series A (UHMWPE/PTFE Packed)

237779 55:1 ratio stubby Quiet Bulldogr

Pump, Series A

(UHMWPE/PTFE Packed)

1.2 12 180 12 124 1800

1.2 12 180 25 248 3600

0.8 8 120 28 281 4080

0.6 6.2 90 34 341 4950

Maximum Fluid

Working Pressure

2 308017

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

WARNING

EQUIPMENT MISUSE HAZARD

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

INSTRUCTIONS

D This equipment is for professional use only.

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

D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco

distributor.

D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

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

D Do not exceed the maximum working pressure stated on the equipment or in the Technical Data

for your equipment. Do not exceed the maximum working pressure of the lowest rated component in your system.

D 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.

D Do not use hoses to pull equipment.

D 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).

D Wear hearing protection when operating this equipment.

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

308017 3

WARNING

SKIN INJECTION HAZARD

Spray from the spray gun/dispense valve, hose 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.

D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate

surgical treatment.

D Do not point the gun/valve at anyone or at any part of the body.

D Do not put your hand or fingers over the spray tip/nozzle.

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

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

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

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

D Be sure the gun/valve trigger safety operates before spraying/dispensing.

D Lock the gun/valve trigger safety when you stop spraying/dispensing.

D Follow the Pressure Relief Procedure on page 9 whenever you: are instructed to relieve pres-

sure; stop spraying/dispensing; clean, check, or service the equipment; and install or clean the spray tip/nozzle.

D Tighten all fluid connections before operating the equipment.

D Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

D Use only Graco approved hoses. Do not remove any spring guard that is used to help protect the

hose from rupture caused by kinks or bends near the couplings.

MOVING PARTS HAZARD

Moving parts, such as the priming piston, can pinch or amputate your fingers.

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

D Keep hands and fingers away from the priming piston during operation and whenever the pump is

charged with air.

D Before servicing the equipment, follow the Pressure Relief Procedure on page 9 to prevent the

equipment from starting unexpectedly.

4 308017

WARNING

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.

D Ground the equipment and the object being sprayed. Refer to Grounding on page 8.

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

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

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

being sprayed/dispensed.

D Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.

D Electrically disconnect all equipment in the spray/dispense area.

D Extinguish all open flames or pilot lights in the spray/dispense area.

D Do not smoke in the spray/dispense area.

D Do not turn on or off any light switch in the spray/dispense area while operating or if fumes are

present.

D Do not operate a gasoline engine in the spray/dispense area.

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.

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

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

state and national guidelines.

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

solvent manufacturer.

308017 5

Installation

General Information

NOTE: Reference numbers and letters in parentheses

in the text refer to the callouts in the figures and the parts drawings.

NOTE: Always use Genuine Graco Parts and Accessories, available from your Graco distributor. Refer to the Product Data Sheet, Form No. 305546. If you supply your own accessories, be sure they are adequately sized and pressure-rated to meet the system’s requirements.

Fig. 1 is only a guide for selecting and installing system components and accessories. Contact your Graco distributor for assistance in designing a system to suit your particular needs.

System Accessories

WARNING

A red-handled main air bleed valve (V), pump air bleed valve (G), and fluid drain valve (L) are required. These accessories help reduce the risk of serious injury, including fluid injection and splashing of fluid in the eyes or on the skin, and injury from moving parts if you are adjusting or repairing the pump.

The red-handled main air bleed valve (V) shuts off and relieves the air to the pump and ram. Order Part No. 113269 for Monark and President Pumps, or 113218 for Senator and Bulldog Pumps. The ram will hold pressure if the ram director valve (U) is in the horizontal (neutral) position. To relieve air pressure in the ram, close the red-handled bleed valve (V) and move the director valve (U) to DOWN. The ram will slowly drop.

The pump air bleed valve (G) relieves air trapped between it and the pump after the air is shut off. Trapped air can cause the pump to cycle unexpectedly. Locate the valve close to the pump.

The fluid drain valve (L) assists in relieving fluid pressure in the displacement pump, hose, and gun. Triggering the gun to relieve pressure may not be sufficient. Order Part No. 210658 (3/8 npt).

Air Line

Install the following accessories as shown in Fig. 1, using adapters as necessary:

D A red-handled main air bleed valve (V) is re-

quired in your system to shut off the air supply to the pump and ram (see the WARNING at left). When closed, the valve will bleed off all air in the ram and pump, and the ram will slowly drop. Be sure the valve is easily accessible from the pump, and is located upstream from the air manifold (D).

D The pump air bleed valve (G) is required in your

system to relieve air trapped between it and the air motor when the valve is closed (see the WARNING at left). Be sure the valve is easily accessible from the pump, and is located downstream from the air regulator (H).

D The pump air regulator (H) controls pump speed

and outlet pressure by adjusting the air pressure to the pump. Locate the regulator close to the pump, but upstream from the pump air bleed valve (G).

D An air line lubricator (F) provides automatic air

motor lubrication.

D A pump runaway valve (E) senses when the

pump is running too fast and automatically shuts off the air to the motor. A pump which runs too fast can be seriously damaged.

D An air manifold (D) has a swivel air inlet. It has

ports for connecting lines to air accessories, such as the ram air regulator (T), which controls the air pressure to the ram.

D The air pressure relief valve (Q) limits the air

pressure to the ram to 10 bar (150 psi).

D The ram director valve (U) controls the raising

and lowering of the ram.

D An air line filter (J) removes harmful dirt and

moisture from the compressed air supply. Also, install a drain valve (W) at the bottom of each air line drop, to drain off moisture.

D A bleed-type air valve (K) isolates the air line

accessories for servicing. Locate upstream from all other air line accessories.

6 308017

Installation

Fluid Line Accessories

Install the following accessories in the positions shown in Fig. 1, using adapters as necessary:

D Install a fluid drain valve (L) in a tee near the

pump fluid outlet. The drain valve is required in your system to relieve fluid pressure in the displacement pump, hose and gun/valve (see the WARNING on page 6). Install with the drain valve pointing down, but so the handle points up when the valve is open.

D A fluid regulator (M) controls fluid pressure to the

gun/valve, and dampens pressure surges.

D A gun or dispense valve (N) dispenses the fluid.

The gun shown in Fig. 1 is a high pressure dispensing gun for highly viscous fluids.

D A gun/valve swivel (P) allows freer gun/valve

movement.

Air and Fluid Hoses

Be sure all air hoses (S) and fluid hoses (R) are properly sized and pressure-rated for your system. Use only electrically conductive hoses. Fluid hoses must have spring guards on both ends.

KEY A Pump

B 19 Liter (5 Gallon) Air-Powered Ram C Wiper Plate D Air Manifold

D H

E Pump Runaway Valve (location shown) F Air Line Lubricator (location shown) G Pump Bleed-Type Air Valve

(required, for pump)

H Pump Air Regulator J Air Line Filter K Bleed-Type Air Valve (for accessories) L Fluid Drain Valve (required) M Fluid Pressure Regulator N Airless Spray Gun or Dispensing Valve P Gun/Valve Swivel Q Ram Air Pressure Relief Valve R Electrically Conductive Fluid Supply Hose S Electrically Conductive Air Supply Hose T Ram Air Regulator U Ram Director Valve V Red-Handled Main Air Bleed Valve W Air LIne Drain Valve Y Ground Wire (required, see page 8 for

installation instructions)

Fig. 1

05683

308017 7

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, ground the system as explained below. Also read the section FIRE AND EXPLOSION HAZARD on page 5.

1. Pump: use a ground wire and clamp. See Fig. 2. Loosen the grounding lug locknut (W) and washer (X). Insert one end of a 1.5 mm@ (12 ga) minimum ground wire (Y) into the slot in lug (Z) and tighten the locknut securely. Connect the other end of the wire to a true earth ground. Order Part No. 237569 Ground Wire and Clamp.

0864

Fig. 2

2. Air and fluid hoses: use only electrically conductive hoses.

3. Air compressor: follow manufacturer’s recommendations.

4. Spray gun/dispense valve: ground through connection to a properly grounded fluid hose and pump.

5. Fluid supply container: follow your local code.

6. Object being sprayed: follow your local code.

7. All solvent pails used when flushing: follow your local code. Use only metal pails, which are conductive, placed on a grounded surface. Do not place the pail on a nonconductive surface, such as paper or cardboard, which interrupts the grounding continuity.

8. To maintain grounding continuity when flushing or relieving pressure, always hold a metal part of the gun/valve firmly to the side of a grounded metal pail, then trigger the gun/valve.

Mounting Accessories

Mount the pump (A) to suit the type of installation planned. Pump dimensions and the mounting hole layout are shown on pages 46 and 47.

If you are mounting the pump on a ram (B), refer to the manual supplied with the ram for installation and operation instructions. The ram shown in Fig. 1 is a 19 liter (5 gal.) pail ram, used with a wiper plate (C). The ram shown includes an air regulator (T). It also requires an air supply hose (S) and an air manifold (D), which divides the main air supply into separate lines for the pump and the ram.

By using Pump Mounting Kit 222776, you can also mount the pump on Floor Stand 222780, 200 liter (55 gal.) Ram 207279, or Inductor 222635.

8 308017

Operation

Pressure Relief Procedure

WARNING

SKIN INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from

starting or dispensing accidentally. Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

D are instructed to relieve the pressure, D stop spraying/dispensing, D check or service any of the system equipment, D or install or clean the spray tip/nozzle.

1. Lock the gun/valve trigger safety.

2. Close the pump’s bleed-type air valve (G, required in your system).

Packing Nut/Wet-Cup

Before starting, fill the packing nut (2) 1/3 full with Graco Throat Seal Liquid (TSL) or compatible solvent. See Fig. 3.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure at left.

The packing nut is torqued at the factory and is ready for operation. If it becomes loose and there is leaking from the throat packings, relieve pressure, then torque the nut to 45–53 NSm (33–39 ft-lb) using the supplied wrench (110). Do this whenever necessary. Do not overtighten the packing nut.

Bleed hole must face down.

Torque to 45–53 NSm (33–39 ft-lb).

3. Shut off the red-handled main air bleed valve (V, required in your system). If the pump is mounted on a ram, set the ram director valve (U) to DOWN. The ram will slowly drop.

4. Unlock the gun/valve trigger safety.

5. Hold a metal part of the gun/valve firmly to the side of a grounded metal pail, and trigger the gun/valve to relieve pressure.

6. Lock the gun/valve trigger safety.

7. Open the drain valve (required in your system), having a container ready to catch the drainage.

8. Leave the drain valve open until you are ready to spray/dispense again.

110

If you suspect that the spray tip/nozzle or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly

loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the tip/nozzle or hose.

0423A

Fig. 3

308017 9

Operation

Flush the Pump Before First Use

The pump is tested with lightweight oil, which is left in to protect the pump parts. If the fluid you are using may be contaminated by the oil, flush it out with a compatible solvent. See Flushing on page 11.

Starting and Adjusting the Pump

WARNING

MOVING PARTS HAZARD

See Fig. 3. The priming piston (25) and the air motor piston (located behind the air motor plates, AA) move during operation.

Keep hands and fingers away from the priming piston (25) during operation and whenever the pump is charged with air. The priming piston extends beyond the intake cylinder (23) to pull material into the pump and can amputate a hand or finger caught between it and the intake cylinder. Follow the Pressure Relief Procedure on page 9, before checking, clearing, or cleaning the priming piston.

Never operate the pump with the air motor plates (AA) removed.

1. Do not install the spray tip yet.

6. Slowly open the air regulator (H) until the pump starts.

7. Cycle the pump slowly until all air is pushed out and the pump and hoses are fully primed.

8. Release the gun/valve trigger and lock the trigger safety. The pump should stall against pressure.

WARNING

SKIN INJECTION HAZARD

To reduce the risk of fluid injection, do not use your hand or fingers to cover the bleed hole on the underside of the bleeder valve body (43) when priming the pump. Use a crescent wrench to open and close the bleeder plug (35). Keep your hands away from the bleed hole.

9. If the pump fails to prime properly, open the bleeder valve plug (35) slightly. Use the bleed hole on the underside of the valve body (43) as a priming valve until the fluid appears at the hole. See Fig. 3. Close the plug (35).

NOTE: When changing fluid containers with the hose and gun/valve already primed, open the bleeder valve plug (35) to help prime the pump and vent air before it enters the hose. Close the plug when all air is eliminated.

2. Supply fluid to the pump, per the requirements of your system.

3. See Fig. 1. Close the pump air regulator (H).

4. Open the red-handled main air bleed valve (V) and the pump’s bleed-type air valve (G).

5. Hold a metal part of the gun/valve (N) firmly to the side of a grounded metal pail and hold the trigger open.

CAUTION

Do not allow the pump to run dry. It will quickly accelerate to a high speed, causing damage. If your pump is running too fast, stop it immediately and check the fluid supply. If the container is empty and air has been pumped into the lines, refill the container and prime the pump and the lines, or flush and leave it filled with a compatible solvent. Eliminate all air from the fluid system.

10 308017

Operation

Starting and Adjusting the Pump (continued)

10. With the pump and lines primed, and with adequate air pressure and volume supplied, the pump will start and stop as you open and close the gun/valve. In a circulating system, the pump will speed up or slow down on demand, until the air supply is shut off.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

11. Relieve the pressure. Install the spray tip in the gun.

WARNING

COMPONENT RUPTURE HAZARD

To reduce the risk of overpressurizing your system, which could cause component rupture and serious injury, never

exceed the Maximum Incoming Air Pressure to the pump (see the Technical Data on pages 33–43).

Flushing

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, read the section FIRE AND EXPLOSION HAZ- ARD on page 5. Be sure the entire system and flushing pails are properly grounded. Refer to Grounding on page

Flush with a fluid that is compatible with the fluid you are pumping and with the wetted parts in your system. Check with your fluid manufacturer or supplier for recommended flushing fluids and flushing frequency. Always flush the pump before fluid dries on the displacement rod.

CAUTION

Never leave water or water-base fluid in the pump overnight. If you are pumping water-base fluid, flush with water first, then with a rust inhibitor such as mineral spirits. Relieve the pressure, but leave the rust inhibitor in the pump to protect the parts from corrosion.

12. Use the air regulator (H) to control the pump speed and the fluid pressure. Always use the lowest air pressure necessary to get the desired results. Higher pressures cause premature tip/nozzle and pump wear.

Shutdown and Care of the Pump

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

For overnight shutdown, stop the pump at the bottom of the stroke to prevent fluid from drying on the exposed displacement rod and damaging the throat packings. Relieve the pressure.

Always flush the pump before the fluid dries on the displacement rod. Refer to Flushing at right.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

1. Relieve the pressure.

2. Remove the spray tip/nozzle from the gun/valve.

3. Hold a metal part of the gun/valve firmly to the side of a grounded metal pail.

4. Start the pump. Always use the lowest possible fluid pressure when flushing.

5. Trigger the gun/valve.

6. Flush the system until clear solvent flows from the gun/valve.

7. Relieve the pressure.

308017 11

Troubleshooting

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

1. Relieve the pressure.

2. Check all possible problems and causes before disassembling the pump.

PROBLEM

Pump fails to operate. Restricted line or inadequate air supply;

Pump operates, but output is low on both strokes.

Pump operates, but output is low on downstroke.

Pump operates, but output is low on upstroke.

CAUSE SOLUTION

closed or clogged valves. Obstructed fluid hose or gun/valve;

fluid hose ID is too small. Fluid dried on the displacement rod. Clean; always stop the pump at the bottom of its

Dirty, worn, or damaged motor parts. Clean or repair; see the separate motor manual. Restricted line or inadequate air supply;

closed or clogged valves.

Obstructed fluid hose or gun/valve; fluid hose ID is too small.

Bleeder valve is open. Close the valve. Air is leaking into the supply container. Check the ram plate seal. Fluid is too heavy for pump priming. Use the bleeder valve (see page 10); use a ram. Held open or worn intake valve or seals. Clear the valve; replace the seals. Worn packings in the displacement

pump. Fluid too heavy for pump priming. Use the bleeder valve (see page 10); use a ram.

Held open or worn intake valve or seals. Clear the valve; replace the seals. Held open or worn piston valve or seals. Clear the valve; replace the seals.

Clear; increase the air supply. Check that all valves are open.

Open, clear*; use a hose with a larger ID.

stroke; keep the wet-cup 1/3 filled with a compatible solvent.

Clear; increase the air supply. Check that all valves are open.

Open, clear*; use a hose with a larger ID.

Replace the packings.

THE TROUBLESHOOTING CHART IS CONTINUED ON PAGE 13.

* To determine if the fluid hose or gun is obstructed, follow the Pressure Relief Procedure on page 9. Disconnect the fluid hose and place a container at the pump fluid outlet to catch any fluid. Turn on the air just enough to start the pump. If the pump starts when the air is turned on, the obstruction is in the fluid hose or gun.

12 308017

Troubleshooting

PROBLEM CAUSE SOLUTION

Erratic or accelerated pump speed.

Exhausted fluid supply. Refill and prime.

Fluid is too heavy for pump priming. Use the bleeder valve (see page 10); use a ram. Held open or worn piston valve or seals. Clear the valve; replace the seals. Held open or worn priming piston. Clear; service. Worn packings in the displacement

pump.

Replace the packings.

308017 13

Service

Required Tools

D Torque wrench D Bench vise, with soft jaws D Rubber mallet D Hammer D O-ring pick D 13 mm (1/2 in.) dia. brass rod D Set of socket wrenches D Set of adjustable wrenches D Pipe wrench D Packing nut wrench (110, supplied) D Thread lubricant D Thread sealant

Disconnecting the Displacement Pump

1. Flush the pump, if possible. Stop the pump at the bottom of its stroke.

WARNING

2. Relieve the pressure.

3. Disconnect the air hose. Hold the fluid outlet fitting (8) with a wrench to keep it from being loosened while you disconnect the fluid hose.

4. Remove the pump from its mounting. Disconnect the displacement pump (107) from the motor (101) as follows. Be sure to note the relative position of the pump’s fluid outlet (8) to the motor air inlet (CC).

5. Using an adjustable wrench (or a hammer and rod), unscrew the coupling nut (104) from the connecting rod (103) or air motor shaft. Do not lose or drop the coupling collars (105). See Fig. 4.

6. Hold the tie rod flats with a wrench to keep the rods from turning. Use the wrench (110) provided with the pump to unscrew the nuts (106) from the tie rods (102). Carefully remove the displacement pump (107) from the motor (101).

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

7. Refer to page 16 for displacement pump service. To service the air motor, refer to the separate motor manual, supplied.

14 308017

Service

Reconnecting the Displacement Pump

1. Make sure the coupling nut (104) and the coupling collars (105) are in place on the displacement rod (1). See Fig. 4.

2. Orient the pump’s fluid outlet (8) to the air inlet (CC) as was noted in step 4 under Disconnecting the Displacement Pump. Position the displacement pump (107) on the tie rods (102).

NOTE: Refer to Fig. 4 and the Torque Chart for proper torque values for your pump.

3. If you removed the tie rods (102) from the air motor (101), reinstall them using an 11 mm wrench. Torque as specified.

4. Screw the nuts (106) onto the tie rods (102) and torque as specified.

5. Screw the coupling nut (104) onto the connecting rod (103) or air motor shaft loosely. Hold the connecting rod flats with a wrench to keep it from turning. Using an adjustable wrench, torque the coupling nut.

6. Using a torque wrench in the square hole of the supplied wrench (110), torque the packing nut (2).

PUMP TORQUE CHART (Refer to Fig. 4)

Pump Model

222768, 237207, 246933

222769, 222770, 222778, 222813, 224660, 235626

237208, 237492, 237779, 237780

Torque to 27–34 NSm

(20–25 ft-lb).

Torque to 45–53 NSm

(33–39 ft-lb).

Torque to 50–61 NSm

(37–45 ft-lb).

Torque to 20–25 NSm

(15–18 ft-lb).

Torque to 36–45 NSm

(27–33 ft-lb).

Torque to 195–210 NSm

(145–155 ft-lb).

Torque to 81–89 NSm

(60–66 ft-lb).

Tie Rod (102)

4 1 3 2

5 1 3 2

7 7 6 2

Tie Rod Nut (106)

Coupling Nut (104)

105

Packing Nut (2)

101

111

103

102

, 5 ,

7. Mount the pump and reconnect all hoses. Reconnect the ground wire if it was disconnected. Fill the wet-cup (2) 1/3 full of Graco Throat Seal Liquid or compatible solvent.

8. Turn on the air supply. Run the pump slowly to ensure proper operation.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 9.

9. Before returning the pump to production, relieve the pressure and retorque the packing nut (2).

110

Model 222768 President Pump Shown

Fig. 4

107

104

106

or 7

0424A

308017 15

+ 33 hidden pages