Graco G Series Manual de operación

306878ZAA

Instructions-Parts List

High Pressure Fluid

Regulators

For use in airless spray systems to control and regulate fluid pressure to one spray gun,

dispensing valve, or atomizing head. For professional use only.

Model 206661, Series G

1000-3000 psi (7-21 MPa, 70-207 bar)

Regulated Fluid Pressure Range

Model 217576, Series D

200-1000 psi (1.4-7 MPa, 14-70 bar)

Regulated Fluid Pressure Range

3000 psi (21 MPa, 207 bar) Maximum Working Pressure

Important Safety Instructions

Read all warnings and instructions in this

manual before using the equipment. Save

these instructions.

2306878ZAA

Contents

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

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Before Installing the Fluid Regulator . . . . . . . . . . 5

Installing the Fluid Regulator . . . . . . . . . . . . . . . 5

Typical Installation . . . . . . . . . . . . . . . . . . . . . . . 6

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pressure Relief Procedure . . . . . . . . . . . . . . . . . 7

Spray Tip Installation and Removal . . . . . . . . . . 7

Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Adjusting the Regulator . . . . . . . . . . . . . . . . . . . . 8

Flush the Equipment . . . . . . . . . . . . . . . . . . . . . . 8

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Repairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fluid Pressure Gauges . . . . . . . . . . . . . . . . . . . 12

Compression Springs . . . . . . . . . . . . . . . . . . . . 12

Technical Specifications . . . . . . . . . . . . . . . . . . . . 13

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 14

Warnings

306878ZAA 3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-

tion 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.

WARNING

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like

just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

• Do not spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

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

• Do not put your hand over the spray tip.

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

• Follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or

servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings

4306878ZAA

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system

component. See Technical Specifications in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical

Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For

complete information about your material, request Safety Data Sheets (SDSs) from distributor or

retailer.

• Do not leave the work area while equipment is energized or under pressure.

• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine

manufacturer’s replacement parts only.

• Do not alter or modify equipment. Alterations or modifications may void agency approvals and

create safety hazards.

• Make sure all equipment is rated and approved for the environment in which you are using it.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

• Wear hearing protection when operating this equipment.

• Do not lift pressurized equipment.

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or

swallowed.

• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

Installation

306878ZAA 5

Installation

Fluid pressure regulators are used for accurate positive

control of the fluid pressure to spray guns, dispensing

valves or atomizing heads.

Regulators installed at circulating line take-offs or

pumps are used to reduce main line pressure and

maintain the desired fluid pressure to the spray gun,

dispensing valve, or atomizing head.

Before Installing the Fluid

Regulator

1. Determine placement of the fluid regulators in sys-

tem.

2. Install a ball valve for inlet and outlet of the regula-

tor.

3. Install temporary plumbing between the ball valves.

4. Thoroughly flush the system to remove metal chips

and other contaminants and to check for leaks.

Installing the Fluid Regulator

1. Remove the temporary plumbing and install one

regulator for each spray gun. A mounting stud,

washers, and locknut are provided for mounting the

regulator either from the bottom or side.

2. Put sealer on threaded connections, except on

swivel unions as it interferes with the swivel action.

3. Connect the fluid supply line to the 3/8 npt(f) inlet of

the fluid regulator.

4. Connect the fluid line between the gun and the reg-

ulator’s 1/4 npt(f) outlet of choice.

NOTE: Make sure that the direction of the fluid flow

agrees with the IN and OUT markings on the regula-

tor body.

5. Flush and test the entire system.

Installation

6306878ZAA

Typical Installation

Single Direct Spray Station

Figure 1

Multiple Circulating Spray Station

Figure 2

KEY

APump

B Air Regulator

C Fluid Regulator

D Gauge

E Spray Gun

F Fluid Drain Valve

G Supply Container

H Back Pressure Valve

I Fluid Supply Line

J Fluid Return Line

K Back Pressure Regulator

Operation

306878ZAA 7

Operation

Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever

you see this symbol.

1. Engage trigger lock.

2. Close the bleed-type master air valve.

3. Disengage the trigger lock.

4. Hold a metal part of the gun firmly to a grounded

metal pail. Trigger the gun to relieve pressure.

5. Engage the trigger lock.

6. Open all fluid drain valves in the system, having a

waste container ready to catch drainage. Leave

drain valve(s) open until you are ready to spray

again.

7. If you suspect the spray tip or hose is clogged or

that pressure has not been fully relieved:

a. VERY SLOWLY loosen the tip guard retaining

nut or the hose end coupling to relieve pressure

gradually.

b. Loosen the nut or the coupling completely.

c. Clear the obstruction in the hose or tip.

Spray Tip Installation and

Removal

Trigger Lock

Always engage the trigger lock when you stop spraying

to prevent the gun from being triggered accidentally by

hand or if dropped or bumped.

This equipment stays pressurized until pressure is

manually relieved. To help prevent serious injury from

pressurized fluid, such as skin injection, splashing

fluid, and moving parts, follow the Pressure Relief

Procedure when you stop dispensing and before

cleaning, checking, or servicing the equipment.

To avoid serious injury from skin injection, do not put

your hand in front of the spray tip when installing or

removing the spray tip and tip guard.

NO YES

Operation

8306878ZAA

Adjusting the Regulator

The fluid pressure regulator controls pressure down

stream from its outlet.

NOTE: The inbound fluid pressure needs to be higher

than the set point fluid pressure.

To adjust the fluid regulator, first, back the knob out until

there is no spring pressure. Then, turn the knob clock-

wise to increase the pressure.

NOTE: If you are using an accessory fluid pressure

gauge, relieve the spray gun line when reducing pres-

sure to ensure a correct gauge reading.

Adjust the pump air pressure and the fluid regulator for

the best spraying combination. In a circulating system,

also adjust the back pressure valve.

Record all the settings for future reference. The valve

cylinder (7) has exterior markings (set points 1 to 8) for

repeat settings.

Flush the Equipment

• Flush before changing colors, before fluid can dry in

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

and before repairing equipment.

• Flush at the lowest pressure possible. Check con-

nectors for leaks and tighten as necessary.

• Flush with a fluid that is compatible with the fluid

being dispensed and the equipment wetted parts.

1. Record the pressure adjustment setting of the regu-

lator before flushing.

2. Shut off the pump and follow Pressure Relief Pro-

cedure.

3. Never exceed the maximum working pressure of the

lowest rated system component.

4. Open the fluid regulator by turning the adjusting

knob (6) fully clockwise.

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

est possible pressure, and start pump.

6. Flush until thoroughly clean.

7. Adjust the fluid regulator to return to the desired

fluid pressure setting.

To avoid fire andexplosion, alwaysground equipment

and waste container. To avoid static sparking and

injury from splashing, always flush at the lowest pos-

sible pressure.

Maintenance

306878ZAA 9

Maintenance

Flushing

Refer to Flush the Equipment on page 8 for the flush-

ing procedure.

Cleaning

When changing fluids or colors, the regulator should be

disassembled and cleaned. Regular cleaning and

inspection, and lubrication of the piston (15) and piston

packing (10) are necessary to keep the fluid regulator

working properly.

1. Relieve all the air and fluid pressure in the system.

2. Remove the regulator from the system.

3. Disassemble the regulator. See Parts on page 10.

Clean and inspect all parts.

Repairing

Normally, only the ball support (21), seat (20) and piston

packing (10) will ever need replacement. Repair Kit

220139 is availableto replace these parts. SeeParts on

page 10.

1. Lubricate the piston packing (10), piston (15), and

spring locater (11) with lithium base grease.

2. Place the washer (19) over the pointed end of the

piston (15).

3. Place the packing (10), with its lips facing down,

over the pointed end of the piston (15) and against

the washer (19).

4. Insert the piston (15) into the bottom of the cylinder

(7) and gently work it into place.

5. Reassemble the remaining parts in reverse order of

disassembly. Torque the valve seat (20) into the

housing to 175-200 in-lb (20-22 N•m). Over-tighten-

ing could break off the hex portion of the seat.

COMPONENT RUPTURE HAZARD

To reduce the risk of serious bodily injury, including

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

• Always follow the Pressure Relief Procedure on

page 7 before adjusting, cleaning, repairing, or

removing the regulator from the system.

•Never pressurize the system with the fluid regula-

tor adjusting knob removed.

•Never completely remove the adjusting knob

when system pressure is present.

NOTICE

Use special care when handling the hard carbide

portions of the piston (13) and seat (12). Damage

will cause poor operation and leakage.

Parts

10 306878ZAA

Parts

Model 206661, Series G

Includes items 1-20

Install with

lips down

*10

*15

8

20*

Use Loctite®

Grade 601 on

threads

Torque to

55 to 65in-lb

(6.3 to 7.3N•M) 1

Ref. Part Description Qty.

1 100322 LOCK WASHER, ext shkprf; 7/16”

(Model 206661 only) 2

100639 LOCK WASHER, ext shkprf; 3/8”

(Model 217576 only) 2

2 101885 SCREW, soc hd cap; 1/4–20 x 1–

3/4” 2

3 101954 RING, int retaining; 0.75” (19 mm)

housing dia.; cadmium plated 1

4 150513 NUT, jam; 7/16–20

(Model 206661 only) 1

100307 NUT, jam; 3/8–16

(Model 217576 only) 1

5* 150670 GASKET; copper 1

6 166976 KNOB, adjusting 1

7 166982 CYLINDER, regulator 1

8166985 SEAL, o-ring; PTFE 2

9 166986 SPRING, helical compression

(Model 206661 only) 1

501511 SPRING, helical compression

(Model 217576 only) 1

10* 111796 PACKING, u-type; PTFE 1

Ref. Part Description Qty.

Mounting

Parts

Torque to

175 to 200in-lb

(20 to 22 N•M)

Use Loctite®

Grade TL242 on threads

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