Graco 237286, 237287 User Manual

Instructions – Parts List

STAINLESS STEEL

Dura–Flo 900t Pumps

With Severe–Duty Rod and Cylinder

U.S. Patent No. 5,456,583 Foreign Patents Pending

Important Safety Instructions

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

See page 2 for model numbers and maximum working pressures.

Model 237286

308354H

Model 237287

04143B

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

04275B

List of Models

Pump Part No. and Series Pump Model Ratio

237286, Series B

237287, Series A

237280, Series A

245172, Series A

245173, Series B

237290, Series A

248817, Series A

Reduced Icing Quiet King 56:1 38.6 MPa, 386 bar

Bulldog 28:1 19.3 MPa, 193 bar

Senator 17:1 11.7 MPa, 117 bar

King 56:1 38.6 MPa, 386 bar

Quiet King 56:1 38.6 MPa, 386 bar

Viscount II (hydraulic)

3.5:1 34 MPa, 345 bar

Table of Contents

Maximum Fluid Working Pressure

(5600 psi)

(2800 psi)

(1700 psi)

(5600 psi)

(5000 psi)

Symbols

Maximum Air Input Pressure

0.7 MPa, 7 bar (100 psi)

9.9 MPa, 99 bar (1428 psi) hydraulic pressure

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

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

Operation/Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting Chart 15. . . . . . . . . . . . . . . . . . . . . . . . .

Service 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Tools 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disconnecting the Displacement Pump 16. . . . . . .

Reconnecting the Displacement Pump 16. . . . . . . .

Displacement Pump Service 18. . . . . . . . . . . . . . . .

Parts Drawings and Parts Lists 22. . . . . . . . . . . . . . . . . .

Pump Assemblies 22. . . . . . . . . . . . . . . . . . . . . . . . . .

Displacement Pump 26. . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting Hole Layout 33. . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Information 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warning Symbol

WARNING

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

Caution Symbol

CAUTION

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

2 308354

INSTRUCTIONS

WARNING

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, contact your Graco distributor.

 Do not alter or modify this equipment.

 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 pages 28–30 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 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).

 Wear hearing protection when operating this equipment.

 Do not lift pressurized equipment.

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

308354 3

WARNING

SKIN 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 might look like just a cut, but it is a serious injury. Get immediate surgi-

cal treatment.

 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 10 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.

MOVING PARTS HAZARD

Moving parts, such as the air motor piston, 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 10 to prevent the

equipment from starting unexpectedly.

4 308354

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.

 Ground the equipment and the object being sprayed. Refer to Grounding on page 6.

 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.

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.

308354 5

Installation

General Information

NOTE: Reference numbers and letters in parentheses

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

NOTE: Always use Genuine Graco Parts and Accessories, available from your Graco distributor. Refer to Product Data Sheet, Form No. 305715 (Senator Pumps), Form No. 305716 (Bulldog Pumps), and Form No. 305717 (King Pumps). If you supply your own accessories, be sure they are adequately sized and pressure rated for your system.

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, ground the system as explained below. Also read the section FIRE OR EXPLOSION HAZ- ARD on page 5.

1. King Pumps: use a ground wire and clamp. See

Fig. 1. Remove the ground screw (Z) and insert

through eye of ring terminal at the end of ground

wire (Y). Fasten ground screw back onto pump

and tighten securely. Connect the other end of

ground wire to a true earth ground. Order Part No.

222011 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: 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. 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, hold a metal part of the spray gun firmly to the side of a grounded metal pail, then trigger the gun.

System Accessories

All Other Pumps: 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.

Fig. 1

6 308354

TI1052

Fig. 3 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.

Air and Fluid Hoses

Be sure all air hoses (H) and fluid hoses (N and P) are properly sized and pressure-rated for your system. Use only electrically conductive hoses. Fluid hoses must have spring guards on both ends. Use a whip hose (P) and a swivel (R) between the main fluid hose (N) and the gun (S) to allow freer gun movement.

Mounting Accessories

Mount the pump (A) to suit the type of installation planned. Fig. 3 illustrates a wall mount system. Pump dimensions and the mounting hole layout are shown on page 33.

If you are using a floor stand, refer to its separate manual for installation and operation instructions.

Installation

System Accessories (continued)

WARNING

A bleed-type master air valve (E) and a fluid drain valve (M) are required in your system. 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 bleed-type master air valve relieves air trapped between this valve 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. Order Part No. 107141.

A fluid drain valve (M) helps reduce the risk of serious bodily 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 fluid drain valve 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.

Air Line Accessories

Install the following accessories in the locations shown in Fig. 3, using adapters as necessary:

 An air line lubricator (D) provides automatic air

motor lubrication.

 A pump runaway valve (C) 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.

 An air manifold (G) has a 3/4 npsm(f) swivel air

inlet. It mounts to the pump support bracket, and provides ports for connecting lines to air-powered accessories.

 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.

 A second bleed-type air valve (K) isolates the air

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

Fluid Line Accessories

Install the following accessories in the locations shown in Fig. 3, using adapters as necessary:

 A fluid filter (L) with a 60 mesh (250 micron)

stainless steel element, to filter particles from the fluid as it leaves the pump.

 A fluid drain valve (M), which is required in your

system, helps relieve fluid pressure in the hose and gun (see the WARNING at left).

 A gun (S) dispenses the fluid. The gun shown in

Fig. 3 is an airless spray gun for light to medium viscosity fluids.

 A bleed-type master air valve (E) is required in

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

 An air regulator (F) controls pump speed and out-

let pressure by adjusting the air pressure to the pump. Locate the regulator close to the pump, but upstream from the bleed-type master air valve.

 A gun swivel (R) allows freer gun movement.

 A suction kit (T) allows the pump to draw fluid

from a supply container.

CAUTION

To prevent intake valve damage, always apply PTFE tape to the female threads of the intake valve before connecting a suction hose or fitting to the intake.

308354 7

Installation

KEY A Pump

B Wall Bracket C Pump Runaway Valve D Air Line Lubricator E Bleed-Type Master Air Valve

(required, for pump)

F Pump Air Regulator G Air Manifold

TYPICAL INSTALLATION

H Electrically Conductive Air Supply Hose J Air Line Filter K Bleed-Type Master Air Valve

(for accessories)

L Fluid Filter M Fluid Drain Valve (required) N Electrically Conductive

Fluid Supply Hose

MAIN AIR LINE

P Fluid Whip Hose R Gun Swivel S Airless Spray Gun T Suction Kit Y Ground Wire and Clamp

(required; see page 6 for installation instructions)

W Air Line Drain Valve

Fig. 3

8 308354

04177B

Installation

(HYDRAULIC-POWERED PUMPS)

Fluid Line Accessories

Install the following accessories in the locations shown in Fig. 4, using adapters as necessary:

 A fluid filter (L) with a 60 mesh (250 micron)

stainless steel element, to filter particles from the fluid as it leaves the pump.

 A fluid drain valve (M), which is required in your

system, helps relieve fluid pressure in the hose and gun (see the WARNING on page 7).

KEY A Pump

B Wall Bracket C Hydraulic Supply Line D Hydraulic Return Line E Drain Line (from pressure reducing valve) F Pressure Gauge G Flow Control Valve H Pressure Reducing Valve J Accumulator K Drain Line (from motor drip pan) L Fluid Filter M Fluid Drain Valve (required) N Electrically Conductive

Fluid Supply Hose

P Fluid Whip Hose R Gun Swivel S Airless Spray Gun T Drum Suction Kit U Hydraulic Supply Line Shutoff Valve V Hydraulic Return Line Shutoff Valve Y Ground Wire (required, see page 6 for

installation instructions)

AA Hydraulic Return Line Filter

TYPICAL HYDRAULIC-POWERED INSTALLATION

 A gun (S) dispenses the fluid. The gun shown in

Fig. 4 is an airless spray gun for light to medium viscosity fluids.

 A gun swivel (R) allows freer gun movement.

 A suction kit (T) allows the pump to draw fluid

from a supply container.

HYDRAULIC POWER SUPPLY

Fig. 4

DRAINAGE CONTAINER

200 LITER (55 GAL.) DRUM

04582B

308354 9

Operation/Maintenance

Pressure Relief Procedure

WARNING

SKIN INJECTION HAZARD

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

starting or spraying 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:

 are instructed to relieve the pressure,  stop spraying,  check or service any of the system equipment,  or install or clean the spray tips.

1. Lock the gun/valve trigger safety.

2. Shut off the air supply to the pump.

3. Close the bleed-type master air valve (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. 5.

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 the pressure, then torque the nut to 136–149 N.m (100–110 ft-lb) using the supplied wrench (110). Do this whenever necessary. Do not overtighten the packing nut.

Model 237287 Shown

4. Unlock the gun/valve trigger safety.

5. Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun 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 again.

If you suspect that the spray tip 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 or hose.

Fig. 5

110

Torque to 136–149 (100–110 ft-lb)

04143B

10 308354

Operation/Maintenance

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 12.

Starting and Adjusting the Pump

1. See Fig. 3. Connect the suction kit (T) to the pump’s fluid inlet. Place the tube into the fluid supply.

CAUTION

To prevent intake valve damage, always apply PTFE tape to the female threads of the intake valve before connecting a suction hose or fitting to the intake.

2. Close the air regulator (F).

3. Open the pump’s bleed-type master air valve (E).

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

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.

9. 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. In a circulating system, the pump will speed up or slow down on demand, until the air supply is shut off.

4. Hold a metal part of the gun (S) firmly to the side of a grounded metal pail and hold the trigger open.

5. Slowly open the regulator until the pump starts.

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

7. Release the gun trigger and lock the trigger safety. The pump should stall against pressure.

8. If the pump fails to prime properly, open the drain valve (M). Use the drain valve as a priming valve until the fluid flows from the valve. Close the valve.

WARNING

COMPONENT RUPTURE HAZARD

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

exceed the specified Maximum Incoming Air Pressure to the pump (see the Technical Data, on

pages 28–30).

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

308354 11

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