Graco Series B Bedienungsanleitung

Instructions – Parts List

GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441

STAINLESS STEEL, WATERBASE COMPATIBLE

Fluid Pressure Regulator

For use in air–assisted system to regulate pressure to gun.

Fluid regulator valve is cartridge mounted for quick, in–line replacement.

Model 222121, Series B

1500 psi (10.3 MPa, 103 bar) Maximum Fluid Inlet Pressure

150–1200 psi (1.0–8.3 MPa, 10.4–83 bar) Regulated Fluid Pressure Range

Patent Pending

Table of Contents

Safety Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Drawing 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Charts 12. . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensional Drawing 12. . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Information 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

307886K

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

7531A

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2 307886

Symbols

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.

WARNING

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

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

DThis equipment is for professional use only.

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

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

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

DCheck equipment daily. Repair or replace worn or damaged parts immediately.

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

Technical Data on page 13 for the maximum working pressure of this equipment.

DUse 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.

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

Graco hoses to temperatures above 180_F (82_C) or below –40_F (–40_C).

DDo not kink or over bend the hoses or use the hoses to pull equipment.

DWear hearing protection when operating this equipment.

DDo not lift pressurized equipment.

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

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307886 3

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.

DFluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgi-

cal treatment.

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

DKeep your hands away from the end of the drain valve when opening it.

DLock the gun trigger safety when you stop spraying.

DFollow the Pressure Relief Procedure on page 5 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

DFollow the Pressure Relief Procedure on page 5 before removing the regulator’s adjusting knob.

DDo not pressurize the system when the fluid regulator’s adjusting knob is removed.

DTighten all fluid connections before operating the equipment.

DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

Do not repair high pressure couplings; you must replace the entire hose.

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

hose 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.

DKnow the specific hazards of the fluid you are using.

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

state and national guidelines.

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

solvent manufacturer.

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4 307886

Installation

KEY

AAir regulator

BBleed-type master air valve

CPump

DFluid filter & drain valve

EMain fluid supply line

FGun fluid supply line

GFluid regulator

HFluid pressure gauge

& drain valve

JAir-assisted spray gun

KBack pressure valve

LFluid return line

MMain circulating line

NFluid supply container

ABC

Single Direct Spray Station

Multiple Circulating Spray Station

Install the fluid regulator(s) (G) in the spray gun fluid supply

line (F) as shown in the Typical Installation drawing above or

at right. Connect only one spray gun or dispensing valve to

each fluid regulator.

Using pipe sealant on pipe threads, connect the fluid supply

line (F) to the fluid regulator’s 1/4 npt(f) inlet. Connect the line

from the gun (J) to the regulator’s 1/4 npt(f) outlet.

Make sure the direction of fluid flow agrees with the IN and

OUT markings on the regulator body.

The regulator was tested in lightweight oil. Flush the entire

system with a solvent compatible with the fluid being sprayed

or dispensed, then test the system.

NOTE:

The Typical Installation

drawings are only guides for

selecting and installing a

circulating or direct system.

They are not actual system

designs. Contact your Graco

distributor for the particular

type and size system best

suited for your needs.

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307886 5

Operation

Pressure Relief Procedure

WARNING

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

DAre instructed to relieve the pressure

DStop spraying

DCheck or service any of the system equipment

DInstall or clean the spray tip

1. Lock the gun trigger safety and any other

equipment safety locks.

2. Turn off the power to the pump.

3. Unlock the gun trigger safety.

4. Close the bleed-type master air valve (required in

your system).

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 trigger safety.

7. Slowly open the drain valve (required in your

system), and have 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,

then clear the tip or hose.

Operating the Regulator

CAUTION

DTo avoid contaminants clogging or damaging the

regulator, you must clean and test the new

system thoroughly before you admit fluid to the

regulator.

DAlways use the lowest possible air and fluid

pressures for your application. High pressures

can cause premature spray tip and pump wear.

NOTES:

DThe fluid pressure regulator controls pressure

downstream from its outlet.

DIf using an accessory fluid pressure gauge (H), to

ensure a correct gauge reading, relieve the spray

gun line pressure after reducing the regulator

pressure.

1. Back the regulator adjusting screw (18) out (turn

counterclockwise) until there is no spring pressure.

Relieve the spray gun line pressure.

2. Turn the adjusting screw clockwise to increase the

fluid pressure.

3. Adjust the pump air pressure and fluid regulator for

the desired spray pattern. Use the lowest possible

air and fluid pressures for your application.

4. In a circulating system, also adjust the back

pressure valve.

5. Record all the settings for future reference.

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6 307886

Maintenance

Flushing

DFlush before changing colors, before fluid can dry in

the equipment, at the end of the day, before storing,

and before repairing equipment.

DFlush at the lowest pressure possible. Check

connectors for leaks and tighten as necessary.

DFlush with a fluid that is compatible with the fluid

being dispensed and the equipment wetted parts.

1. Record the pressure adjustment setting of the

regulator before flushing.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 5.

2. Shut off the pump and relieve fluid pressure in the

system by triggering the gun and opening the back

pressure valve or other bypass valve.

3. Never exceed the maximum working pressure of

the lowest rated system component.

4. Open the fluid regulator by turning the adjusting

screw (18) fully clockwise.

5. Supply solvent to the system. Set pump to the

lowest possible pressure, and start pump.

6. Flush until thoroughly clean.

7. Adjust the fluid regulator to return to the desired

fluid pressure setting.

Cleaning

NOTE: Do not allow fluid to settle in the system.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 5.

1. Relieve the pressure.

2. Remove the regulator. Clean and inspect all parts.

CAUTION

Handle the hard carbide parts, ball (5), valve actuator

(9), and seat (6) carefully to avoid damaging them.

Damage will cause poor operation and leakage.

Cartridge Replacement

NOTE: Kit 222140 replaces the fluid regulator valve

cartridge. See page 10 for the parts included.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 5.

1. Relieve the pressure.

2. Remove the cartridge by loosening the valve

housing (1) and pulling the cartridge assembly out

of the regulator housing (24). See Fig. 1.

3. Install the new cartridge assembly into the

regulator housing (24). Torque the valve housing

(1) to 30 to 35 ft-lbs (41 to 47 NSm).

Fig. 1

Torque to

30 to 35 ft-lb

(41 to 47 N-m)

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307886 7

Maintenance

Diaphragm & Valve Actuator Replacement

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 5.

1. Relieve the pressure.

2. Remove the regulator from the fluid line.

3. Remove the six cap screws (19) from the regulator

housing (24). See Fig. 2.

4. Remove the diaphragms (26 and 27). Inspect the

carbide pin in the valve actuator (9) for wear.

Replace if necessary.

5. Install the new diaphragms, with the PTFE

diaphragm (26) facing toward the regulator

housing (24), as shown in Fig. 2.

6. Install the valve actuator (9) and six cap screws

(19). Torque the cap screws in the order shown in

Fig. 2.

PTFE

(white)

HytrelRrequires uniform compression.

Torque each bolt no more than 1/8 turn at a

time in the sequence shown. Repeat pattern

until uniform torque of 60–70 in-lb (6.8–7.9

N-m) is obtained. HytrelRdiaphragm should

never extrude more than 1/16 in. on a side.

Torque to

30 to 35 ft-lb

(41 to 47 N-m)

OUT

Torque Sequence

HytrelR

(off-white)

Fig. 2 7533A

HytrelRis a registered trademark of the DuPont Company.

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8 307886

Notes

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307886 9

Troubleshooting

WARNING

To reduce the risk of serious bodily injury, including

fluid injection, splashing in the eyes or on the skin,

or injury from moving parts, always follow the

Pressure Relief Procedure on page 5 whenever

the pump is shut off, before installing, cleaning,

adjusting, removing or servicing the valve or any

part of the system, and whenever you stop

spraying.

NOTE: Check all possible remedies in the table below

before you disassemble the valve.

Problem Cause Solution

No pressure regulation Damaged diaphragm (26 or 27).

Damaged valve actuator (9).

Replace diaphragm. See page 7.

Replace valve actuator. See page 7.

Pressure creeps above

setting

Damaged diaphragm (26 or 27).

Ball (5) or seat (6) leaking or dirty.

Replace diaphragm. See page 7.

Replace the cartridge or clean seat.

See page 7.

Pressure drops below setting Empty/clogged supply line.

Using valve beyond its rated flow

capacity. See page 13.

Fill/flush supply line.

Install valve for each spray gun or

dispensing valve.

Fluid leaks from under spring

housing (16)

Loose spring housing.

Damaged diaphragm (26 or 27).

Tighten screws (19) in sequence and to

torque shown in Fig. 2 on page 7.

Replace diaphragm. See page 7.

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10 307886

Parts Drawing

25{

lubricate

Torque to 30 to 35 ft-lb

(41 to 47 N-m)

Apply medium strength sealant.

Torque to 60 to 70 in-lb (7 to 8 N-m).

Torque in sequence

shown in Fig. 2.

**27

**9

**26

lubricate

Ref No. Qty

lubricate

*Valve Cartridge Repair Kit 222140

Includes the following:

7532A

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