Graco GX-8, GX-8P Operation, Parts, Service, Repair

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Page 1

Operation, Parts, Service, Repair

Important Safety Instructions

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

GX-8 Model 297898

GX-8P Auto Model 297860

GX-8P Spray Gun

For use with non-flammable polyurethane foams, two-component coating systems (polyureas), and some two-component epoxy systems. For professional use only. Not for use in explosive atmospheres.

3500 psi (24 MPa, 240 bar) Maximum Working Pressure 125 psi (90 KPa, 9 bar) Maximum Air Working Pressure

311338N

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Models

Contents

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

Important Two-Component Material Information . 5

Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 5

For all applications except spray foam . . . . . . . . 6

Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . 6

Keep Components A and B Separate . . . . . . . . . 6

Moisture Sensitivity of Isocyanates . . . . . . . . . . . 6

Foam Resins with 245 fa Blowing Agents . . . . . . 7

Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 7

Overall View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Centerline Components . . . . . . . . . . . . . . . . . . . 8

Mixing Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operation Basics . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Safety Position . . . . . . . . . . . . . . . . . . . . . . . . . 10

Air Hose Connection . . . . . . . . . . . . . . . . . . . . . 10

Coupling Block . . . . . . . . . . . . . . . . . . . . . . . . . 11

Air Inlet Configuration . . . . . . . . . . . . . . . . . . . . 12

Mixing Module and PCD Installation . . . . . . . . . 13

Valving Rod Adjustment . . . . . . . . . . . . . . . . . . 14

Initial Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Daily Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Daily Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . 16

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 17

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Gun Service Kits . . . . . . . . . . . . . . . . . . . . . . . . 18

Clean Spray Gun Procedure . . . . . . . . . . . . . . . 19

Flush Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Service Screen Screw . . . . . . . . . . . . . . . . . . . . 20

Remove Check Valve . . . . . . . . . . . . . . . . . . . . 20

Remove Centerline Components . . . . . . . . . . . 21

Install Centerline Components . . . . . . . . . . . . . 21

Replace End Cap and Air Piston Assembly . . . 22

Replace Trigger Valve O-Rings . . . . . . . . . . . . . 24

Clean Mixing Module . . . . . . . . . . . . . . . . . . . . . 25

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

GX-8 Gun Final Assembly (297898) . . . . . . . . . 27

GX-8 Handle Assembly (297702) . . . . . . . . . . . 29

GX-8P Spray Gun Final Assembly (297860) . . . 31

GX-8P Auto Cylinder Assembly (297861) . . . . . 33

Auto GX-8P Optional Parts . . . . . . . . . . . . . . . . 35

Coupling Block Assembly (295383) . . . . . . . . . . 36

Coupling Block (297902) . . . . . . . . . . . . . . . . . . 37

Coupling Block Assembly (24N996) . . . . . . . . . 38

Set-up Chart for GX-8P Modules . . . . . . . . . . . . . 39

GX-8P Model Specifications . . . . . . . . . . . . . . . 39

Tool Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 42

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 42

Models

Part No. Description

297898  Gun, GX-8

297860 Gun, GX-8, Auto

24P633  Gun, GX-8, with manifold 24N996 297911 296980



2 311338N

Includes:

Mix Module Tip Manifold

295338 (013) 297192 (201)

Starter

Kit

Not Included

Flushing

Kit

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Warnings

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

PERSONAL PROTECTIVE EQUIPMENT

Always wear appropriate personal protective equipment and cover all skin when spraying, servicing equipment, or when in the work area. Protective equipment helps prevent serious injury, including long-term exposure; inhalation of toxic fumes, mists or vapors; allergic reaction; burns; eye injury and hearing loss. This protective equipment includes but is not limited to:

• A properly fitting respirator, which may include a supplied-air respirator, chemically impermeable gloves, protective clothing and foot coverings as recommended by the fluid manufacturer and local regulatory authority.

• Protective eyewear and hearing protection.

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 Sheet (SDS) for handling instructions and to know the specific hazards of the fluids you are using, including the effects of long-term exposure.

• When spraying, servicing equipment, or when in the work area, always keep work area well ventilated and always wear appropriate personal protective equipment. See Personal Protective Equipment warnings in this manual.

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

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 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.

• Engage trigger lock when not spraying.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,

checking, or servicing equipment.

PRESSURIZED EQUIPMENT HAZARD

Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and cause serious injury.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

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

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Warnings

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

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 Data in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about your material, request MSDS forms from distributor or retailer.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine Graco/Gusmer replacement parts only.

• Do not alter or modify equipment.

• Use equipment only for its intended purpose. Call your Graco/Gusmer 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.

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death, serious injury, and property damage.

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Important Two-Component Material Information

TOXIC FUMES

HAZARD

DO NOT ENTER DURING

SPRAY FOAM APPLICATION OR FOR ___ HOURS AFTER

APPLICATION IS COMPLETE

DO NOT ENTER UNTIL:

DATE: TIME:

____________ ____________

Important Two-Component Material Information

Isocyanate Conditions

Spraying or dispensing fluids that contain isocyanates creates potentially harmful mists, vapors, and atomized particulates.

• Read and understand the fluid manufacturer’s warnings and Safety Data Sheet (SDS) to know specific haz- ards and precautions related to isocyanates.

• Use of isocyanates involves potentially hazardous procedures. Do not spray with this equipment unless you are trained, qualified, and have read and understood the information in this manual and in the fluid manufacturer’s application instructions and SDS.

• Use of incorrectly maintained or mis-adjusted equipment may result in improperly cured material.which could cause off gassing and offensive odors. Equipment must be carefully maintained and adjusted according to instructions in the manual.

• To prevent inhalation of isocyanate mists, vapors and atomized particulates, everyone in the work area must wear appropriate respiratory protection. Always wear a properly fitting respirator, which may include a supplied-air respirator. Ventilate the work area according to instructions in the fluid manufacturer’s SDS.

• Avoid all skin contact with isocyanates. Everyone in the work area must wear chemically impermeable gloves, protective clothing and foot coverings as recommended by the fluid manufacturer and local regulatory authority. Follow all fluid manufacturer recommendations, including those regarding handling of contaminated clothing. After spraying, wash hands and face before eating or drinking.

• Hazard from exposure to isocyanates continues after spraying. Anyone without appropriate personal protective equipment must stay out of the work area during application and after application for the time period specified by the fluid manufacturer. Generally this time period is at least 24 hours.

• Warn others who may enter work area of hazard from exposure to isocyanates. Follow the recommendations of the fluid manufacturer and local regulatory authority. Posting a placard such as the following outside the work area is recommended:

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Important Two-Component Material Information

For all applications except spray foam

Spraying or dispensing fluids that contain isocyanates creates potentially harmful mists, vapors, and atomized particulates.

• Read and understand the fluid manufacturer’s warnings and Safety Data Sheet (SDS) to know specific hazards and precautions related to isocyanates.

• Use of incorrectly maintained or mis-adjusted equipment may result in improperly cured material. Equipment must be carefully maintained and adjusted according to instructions in the manual.

• To prevent inhalation of isocyanate mists, vapors, and atomized particulates, everyone in the work area must wear appropriate respiratory protection. Always wear a properly fitting respirator, which may include a supplied-air respirator. Ventilate the work area according to instructions in the fluid manufacturer’s SDS.

Material Self-ignition

Some materials may become self-igniting if applied too thick. Read material manufacturer’s warnings and Safety Data Sheet (SDS).

Keep Components A and B Separate

Cross-contamination can result in cured material in fluid lines which could cause serious injury or damage equipment. To prevent cross-contamination:

• Never interchange component A and component B wetted parts.

• Never use solvent on one side if it has been contaminated from the other side.

Moisture Sensitivity of Isocyanates

Exposure to moisture (such as humidity) will cause ISO to partially cure, forming small, hard, abrasive crystal that become suspended in the fluid. Eventually a film will form on the surface and the ISO will begin to gel, increasing in viscosity.

NOTICE

Partially cured ISO will reduce performance and the life of all wetted parts.

• Always use a sealed container with a desiccant dryer in the vent, or a nitrogen atmosphere. Never store ISO in an open container.

• Keep the ISO pump wet cup or reservoir (if installed) filled with appropriate lubricant. The lubricant creates a barrier between the ISO and the atmosphere.

• Use only moisture-proof hoses compatible with ISO.

• Never use reclaimed solvents, which may contain moisture. Always keep solvent containers closed when not in use.

• Always lubricate threaded parts with an appropriate lubricant when reassembling.

NOTE: The amount of film formation and rate of crystallization varies depending on the blend of ISO, the humidity, and the temperature.

6 311338N

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Foam Resins with 245 fa Blowing Agents

Some foam blowing agents will froth at temperatures above 90°F (33°C) when not under pressure, especially if agitated. To reduce frothing, minimize preheating in a circulation system.

Changing Materials

NOTICE

Changing the material types used in your equipment requires special attention to avoid equipment damage and downtime.

• When changing materials, flush the equipment multiple times to ensure it is thoroughly clean.

• Always clean the fluid inlet strainers after flushing.

Important Two-Component Material Information

• Check with your material manufacturer for chemical compatibility.

• When changing between epoxies and urethanes or polyureas, disassemble and clean all fluid components and change hoses. Epoxies often have amines on the B (hardener) side. Polyureas often have amines on the B (resin) side.

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Overall View

125 PSI MAX

Trigger

Air Cap Air Adjustment

Valve

Safety Stop

Gun Block

Air Cap

Gun Block

Manual

Coupling

Mounting Screw

Valves

Block

FIG. 1: GX-8P Overall View

B-Screen Screw

Screen

Gun Block

Screen

Mixing

Pattern Control

PCD

Air Cap

B-Check

Coupling

Coupling Block

A-Check

Screen

A-Screen

Screen

Rear Seal

Packing Nut

Valving Rod

Jam Nut

O-Ring

Module

Disc (PCD)

Retainer

Valve

Block Gasket

Mounting Screw

Valve

Retainer

Screw

Assembly

FIG. 2: GX-8P Centerline Components

Overall View

Centerline Components

8 311338N

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Mixing Module

Valving Rod

Mixing

Pattern

Fan Spray

Assembly

Pattern

Round Spray Pattern

Module

Control

Disc (PCD)

FIG. 3: Mixing Module & PCD

Graco offers a variety of spray tip configurations to meet most applications that spray fast-reaction chemical systems at low outputs. GX-8P spray tip components consist of a Pattern Control Disc (PCD) and a Mixing Module (Figure 3). Tip components are available in a range of sizes in both round and fan spray patterns. Please contact your authorized Graco distributor to help you determine the best configurations for your specific application.

Overall View

311338N 9

Page 10

Operation Basics

Engage the

Safety Stop

125 PSI MAX 125 PSI MAX

Disengage the

Safety Stop

Pull Sleeve

Operation Basics

To prevent accidental gun operation, always disconnect air supply before servicing gun or anytime gun is not in use.

Grounding

Check your local electrical code and proportioner manual for detailed grounding instructions.

Ground spray gun through connection to Graco-approved grounded fluid supply hose.

Safety Position

Disengage Safety Stop

To disengage safety stop, push in and turn safety stop counterclockwise to place gun in OPEN position.

IG. 5: Safety Stop - Disengaged

Air Hose Connection

GX-8P guns have a two-position safety stop. When engaged, it prevents accidental triggering of gun during servicing or down time. When disengaged, it allows gun to dispense.

Engage Safety Stop

To engage safety stop, push in and turn safety stop clockwise to place gun in CLOSED safety position.

IG. 4: Safety Stop - Engaged

Connect Air Hoses

Pull back sleeve of female fitting, insert male fitting and slide sleeve forward to secure connection.

Disconnect Air Hoses

Pull back sleeve of female fitting and pull out male fitting.

10 311338N

IG. 6: Disconnect Air Hose

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Operation Basics

Coupling Block

Manual Valves

Coupling Block

Chemical hoses are joined to gun block by a coupling block to ease installation and removal of gun.

Manual Valves

Two manual valves located on coupling block control flow of each chemical component to gun.

Never open manual valve unless coupling block is secured to gun or unless you point gun into waste container.

NOTE: Triggering gun with manual valves closed may cause crossover if any residual chemical remains in gun ports.

Open Manual Valves

Use 5/16 in. nut driver to turn manual valve counterclockwise approximately three full turns.

Close Manual Valves

Use 5/16 in. nut driver to turn manual valve fully clockwise.

To prevent accidental gun operation, always set safety stop to CLOSED, close both manual valves, and disconnect air supply.

Installation and Removal

To prevent release of pressurized chemicals, close both manual valves before coupling block is removed.

Install Coupling Block

1. Replace nicked, damaged, or worn coupling block gaskets.

2. Ensure A-(isocyanate) and B-(resin) check valves are inserted into their proper recesses in gun block. Isocyanate valve is notched for easy identification.

IG. 7: Open Manual Valves

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Operation Basics

125 PSI MAX

B-Check Valve

A-Check Valve

Coupling Block Gaskets

Coupling Screw Mounting Screw

125 PSI MAX

Pipe Plug

Optional Pipe Plug

Pipe Nipple

3. Fit coupling block into gun block and insert coupling

block mounting screw. Use 5/16 in. nut driver to tighten to gun block.

Air Inlet Configuration

There are two configurations for the air inlet. In the standard configuration, the air inlet is at base of handle. In

the alternate configuration, the air inlet is at rear of gun.

IG. 8: Install Coupling Block

Remove Coupling Block

1. CLOSE safety stop.

2. Disconnect air hose.

3. Close both manual valves.

4. Remove coupling block mounting screw.

5. Separate coupling block from gun.

6. Wipe mating surfaces of gun block and coupling block to remove residual chemicals.

7. Cover exposed openings with grease.

NOTE: To avoid accidental gun operation, ensure coupling block manual valves are closed before attempting to service gun, or any time gun is not in use.

IG. 9: Air Inlet Configuration

To change to alternate configuration:

1. Use 6 in. adjustable wrench to remove 4 in. pipe nipple from base of gun.

2. Use 3/16 in. hex key to remove 1/8 in. pipe plug from rear of gun.

3. Use 3/16 in. hex key to install 1/8 in. pipe plug in location previously occupied by 4 in. pipe nipple.

4. Use 6 in. adjustable wrench to install pipe nipple in location previously occupied by 1/8 in. pipe plug.

12 311338N

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Mixing Module and PCD Installation

1. Loosen air cap by hand and remove.

2. Install mixing module:

a. Disconnect gun from coupling block.

b. Connect air supply to gun.

c. Set safety stop to OPEN.

d. Hold down trigger and place module over tip of

valving rod.

e. Align keying pin with slot in gun block and keep

gun trigger held down.

3. Install PCD:

Operation Basics

a. Hold down gun trigger and thread PCD retainer

in place by hand.

b. Use 10 in. adjustable wrench to carefully tighten

PCD retainer until snug enough to ensure no leak will occur.

c. Release gun trigger.

4. Install air cap and tighten by hand.

5. Adjust valving rod (see Valving Rod Adjustment, page 14).

311338N 13

Page 14

Operation Basics

Valving Rod Assembly

Jam Nut

Packing Nut

Valving Rod Adjustment

Valving rod should not require adjustment if it was shipped from factory with mixing module and PCD installed. Valving rod should only require adjustment when:

• Piston/rod assembly/ring is changed

• Valving rod is changed

• PCD is installed or changed

• Mixing module is installed or changed

To adjust valving rod:

1. Perform Clean Spray Gun Procedure,(see page

19.

2. Connect air supply to gun.

3. Use 5/16 in. open-end wrench to loosen packing nut 3 or 4 turns. This relieves pressure between seals and makes adjustment easier.

4. Use 3/8 in. wrench on hex-shaped valving rod shank and 1/2 in. wrench on jam nut to loosen and back it away from valving rod by 3 or 4 full turns. Then move valving rod toward gun cylinder. Turn valving rod shank 2 or 3 full turns clockwise.

5. Slowly turn valving rod counterclockwise to move it toward PCD until resistance is felt. Valving rod tip should touch inside spherical surface of PCD.

6. Carefully maintain 3/8 in. wrench in position and tighten jam nut up against valving rod shank to lock adjustment into place.

7. Re-tighten packing nut.

8. Check rear safety stop by attempting to disengage it. If knob will not turn, valving rod is adjusted too far forward. Repeat steps 3 - 7. Make sure not to adjust valving rod past the point resistance is felt. If safety stop disengages, proceed to step 9.

9. Trigger gun with safety stop disengaged to confirm rear seal adjustment. Make sure rod moves freely. If not, loosen packing nut slightly until it does. Start to spray and check for chemical seepage from packing nut and re-tighten if necessary.

IG. 10: Valving Rod Adjustments

NOTE: If valving rod required adjustment as part of ini-

tial mixing module and PCD installation on a new spray gun, proceed to Initial Set Up, page 15.

14 311338N

Page 15

Operation Basics

Initial Set Up

1. Remove coupling block from gun.

2. Use two 6 in. adjustable wrenches to install female quick disconnect fitting onto air supply hose bundled with chemical supply hoses.

3. Use two 6 in. adjustable wrenches to connect A-isocyanate hose (red-taped) to notched fitting on coupling block. Connect B-resin hose (blue-taped) to fitting without notches on coupling block.

4. Close both manual valves.

5. Pressurize A and B chemical hoses and check for leaks (see Proportioner manual as needed).

6. Bleed air from chemical hoses:

a. Hold coupling block with exit ports pointed into

waste container.

b. Use 5/16 in. nut driver to open each manual

valve; this allows any trapped air to escape. Bleed each side for a short time until chemicals leaving hoses are free of air.

c. Close both manual valves.

7. Use cloth soaked in gun cleaner to clean coupling block and mating surfaces.

NOTICE

Do not apply grease to mating surfaces of coupling block to avoid accumulation of dirt and other contaminants.

8. CLOSE safety stop.

9. Install coupling block to gun.

10. Proceed with daily start-up and shutdown procedures as required.

311338N 15

Page 16

Operation Basics

Daily Start-up

Ensure gun is attached to coupling block and air hose. Ensure proportioning unit is at desired temperature and pressure. Properly ground equipment to avoid static sparking that may result in fire or explosion.

1. Connect air supply to gun.

2. Adjust air cap adjustment valve. Turn knob counterclockwise to open valve and clockwise to close valve.

3. Open both manual valves.

4. OPEN safety stop.

5. Test spray on a disposable surface and evaluate.

Daily Shutdown

NOTE: Follow daily shutdown procedure when gun is

out of service for any length of time, or for mid- or end-of-day service. See Clean Spray Gun Procedure, page 19.

1. CLOSE safety stop.

2. Close both manual valves.

3. Disconnect air supply from gun.

4. Shut down proportioning unit as required.

5. Clean as required (see Clean Spray Gun Proce-

dure, page 19).

NOTE: Disassembling gun for daily cleaning is not rec-

ommended if gun has been operating properly. However, if gun is removed from coupling block, it must be flushed and cleaned thoroughly.

16 311338N

Page 17

Pressure Relief Procedure

Manual Valves

Pressure Relief Procedure

Relieve pressure before cleaning or repairing gun.

1. Close both manual valves.

4. Release gun trigger, CLOSE safety stop, and close manual valves.

If fluid in hose and proportioner is still under pressure, follow Pressure Relief Procedure in proportioner manual

To relieve pressure in hose after gun is removed, place fluid manifold over containers, facing away from you. Very carefully open fluid valves (F pressure, fluid will spray sideways from fluid ports.

IG. 13). Under high

IG. 11: Close Manual Valves

2. OPEN safety stop.

3. Trigger gun onto cardboard or into waste container

to relieve pressure.

IG. 12: Trigger Gun

IG. 13: Open Manual Valves

311338N 17

Page 18

Maintenance

Gun Service Kits

Use either 1-Quart Gun Service Kit (296980) or 3-Gallon Gun Service Kit (296981) to perform daily flushing of

spray gun without disassembly.

IG. 14: 1-Quart Gun Service Kit

For more information about 1-Quart Gun Service Kit, see Manual 311340.

IG. 15: 3-Gallon Gun Service Kit

For more information about 3-Gallon Gun Service Kit, see Manual 311341.

18 311338N

Page 19

Maintenance

Clean Spray Gun Procedure

To avoid static sparking that may result in fire or explosion, ensure all equipment in cleaning procedure is grounded. Do not clean on or near foamed or coated surfaces or any other flammable surfaces or objects.

Thoroughly flush gun block with gun cleaner before removing valving rod or mixing components from gun block. Also allow chemicals in spray gun to cool before cleaning.

This procedure makes use of the 1-Quart or 3-Gallon Gun Service Kit.

1. CLOSE safety stop.

2. Close both manual valves.

3. Remove gun from coupling block.

10. Clean screens, check valves and screen screw (see

Service Screen Screw, page 20.

NOTE: Inspect air cap, PCD, mixing module, and gun

block for build up of material and clean as required.

Do not use metal cleaning devices to clean plastic components.

Flush Gun

To avoid static sparking that may result in fire or explosion, ensure all equipment in flushing procedure is grounded. Do not flush on or near foamed or coated surfaces.

1. CLOSE safety stop.

2. Close both manual valves.

4. Attach service block of gun service kit to spray gun, and then tighten using 5/16 in. nut driver.

5. Pressurize service kit container up to 100 psi. DO NOT EXCEED 100 psi (0.7 MPa, 7 bar).

6. Clean gun:

a. Set safety stop to OPEN.

b. Open either manual valve on service block.

c. Trigger gun and gun service kit simultaneously

with gun aimed into waste container.

d. Release both triggers and close manual valves

on service block.

e. Repeat procedure for other side of gun.

f. After initial cleaning, remove air cap, PCD

retainer, and PCD. Flush a second time to ensure thorough cleaning.

3. Loosen B-Screen screw and then remove by hand.

4. Use flush can to thoroughly flush screen screw and screen screw cavity.

5. Loosen A-Screen screw and then remove by hand.

6. Use flush can to thoroughly flush screen screw and screen screw cavity.

7. Service gun, see Maintenance procedures, page

18.

7. CLOSE safety stop.

8. Disconnect air supply from gun.

9. Remove service block of gun service kit from gun.

311338N 19

Page 20

Repair

Shutdown proportioner and allow chemicals to cool before servicing gun.

Service Screen Screw

To avoid static sparking that may result in fire or explosion, ensure all equipment in flushing procedure is grounded. Do not flush on or near foamed or coated surfaces.

1. Flush gun see Clean Spray Gun Procedure, page

19.

2. Unthread screen screw from gun block.

3. Remove screen screw retainer before removing screen.

4. Remove screen from screen screw. Soak in gun cleaner or replace if clogged or dirty.

5. Clean screen screw cavity. If any particles are visible, clean with clean out drills and flush with gun cleaner.

NOTE: Any material left in cavity on downstream side of screen will clog mixing module.

6. Inspect screen screw seal for damage. Replace if necessary.

Remove Check Valve

To avoid static sparking that may result in fire or explosion, ensure all equipment in flushing procedure is grounded. Do not flush on or near foamed or coated surfaces.

Check valves are located in cavities of gun block under each coupling block gasket. Check valves are triangular pieces with a spring inserted in one end. The isocyanate valve is notched for easy identification.

To remove check valve:

1. Clean gun (see Clean Spray Gun Procedure, page

19).

2. Use check valve seal removal/cleaning tool to remove gaskets from recesses in coupling block. Inspect gaskets for damage and replace if necessary.

3. Remove check valves. If valve does not come out easily, insert machined end of removal/cleaning tool over valve and rotate it while extracting valve.

4. Clean valves and springs with gun cleaner. Inspect for damage and replace if necessary.

5. Inspect each check valve cavity. Use cleaning tool to remove any visible particles. Use gun cleaner to flush thoroughly.

6. Insert each check valve into its cavity spring end first. Ensure check valve is oriented correctly. Isocyanate valve is notched for easy identification.

7. Install coupling block gaskets.

7. Reinstall screen screw in gun block. Ensure it is tight.

8. Flush gun with mixing module removed.

20 311338N

Page 21

Repair

Remove Centerline Components

Refer to page 8 for diagrams of centerline components for all gun models.

1. Flush gun (see Clean Spray Gun Procedure, page

19).

2. Remove air cap (loosen by hand).

3. Use 10 in. adjustable wrench to remove PCD.

4. Connect air supply to gun.

5. Lift PCD off nose of gun block and remove.

NOTE: To remove PCD that is stuck, set safety stop to OPEN, depress and release gun trigger to unseat it. CLOSE safety stop.

6. Remove mixing module retainer.

7. OPEN safety stop. Depress and release gun trigger

to unseat it. Remove mixing module off end of valving rod. CLOSE safety stop.

NOTICE

Do not use sharp objects or metal tools to remove mixing module.

8. Disconnect air supply from gun.

9. Use 5/16 in. wrench to loosen packing nut 3 or 4 turns.

10. Remove gun block:

a. Use 5/16 in. nut driver to remove gun block

retaining screw.

b. Slide gun block away from valving rod and air

cylinder. If dried chemical is built up on gun block, remove dried chemicals to make removal easier.

11. Remove and clean check valves (see Remove Check Valve, page 20).

12. Remove valving rod:

a. Use 3/8 in. wrench on hex-shaped valving rod

shank and a 1/2 in. wrench on jam nut to loosen it and back it away from valving rod shank by 3 or 4 full turns.

b. Unthread valving rod from piston shaft and

remove.

13. Clean all components thoroughly before reassembly.

14. Inspect gun block to ensure proper operation of spray gun.

Install Centerline Components

Before installation, ensure all gun components are clean and dry. Lubricate all moving parts and threads.

1. To install valving rod, thread jam nut as far back on piston shaft as possible. Screw shank end of valving rod onto threaded end of piston rod.

2. Install rear seal and packing nut if removed. Thread packing nut into gun block by hand, but do not tighten.

3. To install gun block, carefully slide gun block onto valving rod towards air cylinder. Use 5/16 in. nut driver to install gun block onto gun block mounting bracket.

4. Connect air supply to gun.

5. OPEN safety stop.

6. To install mixing module, hold down gun trigger and slide module over end of valving rod. Make sure to align keypin with slot in gun block. Keep gun trigger depressed and proceed to step 7.

7. To install PCD, hold gun trigger in and place PCD over mixing module. If installing a fan tip, position PCD according to which spray direction is needed (vertical or horizontal). Keep gun trigger depressed and proceed to step 8.

NOTE: Parts must align properly or chemical flow from gun block ports will not enter mixing module when gun is triggered.

311338N 21

Page 22

Repair

End Cap

Retaining Ring

End Cap/Safety Stop Assembly

O-Ring

Cylinder Cup Seal

#8 Socket Head Cap Screw

Piston Spring

Piston

Piston O-Ring

8. Install PCD retainer:

a. With gun trigger depressed, thread PCD

retainer in place by hand.

b. Use 10 in. adjustable wrench to carefully tighten

PCD retainer until it is snug enough to ensure no leak will occur.

c. Release gun trigger.

NOTICE

To avoid damage to module and gun block, do not over-tighten mixing module retainer.

9. Install air cap and tighten by hand.

10. Adjust valving rod (see Valving Rod Adjustment, page 14).

Replace End Cap and Air Piston Assembly

FIG. 16: End Cap and Air Piston Assembly

1. Clean gun (see Clean Spray Gun Procedure on page 19).

2. Disconnect air supply from gun.

3. Use 5/16 in. wrench to loosen packing nut 3 or 4 turns (remove nut completely if rear seal needs to be replaced).

4. Remove gun block:

a. Use 5/16 in. nut driver to remove gun block

mounting screw.

b. Carefully slide gun block away from valving rod

and air cylinder. If dried chemical has built up on gun block, remove dried chemical to make removal easier.

c. Remove valving rod and jam nut (see Remove

Check Valve, page 20):

d. Use 3/8 in. wrench on hex-shaped valving rod

shank and 1/2 in. wrench on jam nut.

e. Loosen jam nut and back it away from valving

rod shank by 3 or 4 full turns.

22 311338N

f. Unthread valving rod and jam nut from piston

shaft.

Page 23

Repair

Stop Pin

Cup Seal

End Cap

O-ring

Spring

Set Screws

Knob

5. OPEN safety stop.

6. Use 9/64 in. ball point hex key to remove socket head cap screw that holds air cylinder to handle (F

IG. 16).

7. Use retaining ring 45° pliers to remove retaining ring that holds end cap in place inside air cylinder.

8. Remove end cap/safety stop assembly and piston spring:

a. Pull safety stop and attached end cap out of air

cylinder.

b. Remove piston spring located inside cylinder.

Be sure to retain spring for re-installation.

NOTE: Force will be required to remove end cap because ring is tightly compressed.

9. Inspect end cap ring. Replace if damaged. Apply light coating of Lubriplate grease and install new end cap ring.

NOTE: Skip steps 11-13 and go to step 14 if only end cap ring and cup seal need to be replaced.

a. Use 5/64 in. hex key to remove two set screws

from knob.

b. Slide knob off stop pin and retain stop pin

spring.

c. Pull shaft out of end cap (F

IG. 17).

13. Remove cup seal from end cap and inspect for damage. Remove if damaged. Apply light coat of Lubriplate grease and install new end cap ring.

IG. 17: End Cap/Safety Stop Assembly

14. Reassemble safety stop mechanism:

a. Remove piston/rod assembly:

Use gun block mounting screw (screw that holds gun block to bracket) to aid in removal of piston.

b. Look into rear of air cylinder and thread mount-

ing screw into center hole of piston at least 4 full turns.

c. Use 6 in. pliers to grab mounting screw and pull

piston rod assembly out of air cylinder.

d. Inspect ring and replace if damaged. Apply light

coat of Lubriplate grease and install new ring.

10. Inspect air cylinder cup seal. If air escapes around piston rod during operation, remove and replace cup seal located in front of air cylinder. Lubricate new cup seal with Lubriplate grease and install it. Make sure cup faces toward rear of cylinder.

11. Insert piston and rod assembly into air cylinder. Be careful not to damage cup seal in front face of air cylinder as rod passed though. Remove gun block mounting screw from piston.

a. Insert stop pin into end cap hole.

b. Slide spring and knob onto stop pin.

c. Use 5/64 in. hex key to reinstall two set screws

into knob. Ensure knob is secure.

15. Reinstall end cap/safety assembly and piston spring:

a. Insert piston spring and align over raised center

of piston.

b. Line up raised center of end cap with spring and

insert end cap into air cylinder.

c. Press end cap until it moves past retaining ring

groove in cylinder.

d. Maintain pressure on end cap. Ensure groove

remains visible.

16. Use retaining ring 45° pliers to reinstall retaining ring into groove.

12. Disassemble safety stop mechanism:

311338N 23

Page 24

Repair

03)-!8

Refer to Parts, page 27.

Spring

Valve

O-rings

Valve Retainer Nut

Valve

1/16 in. Pipe

Trigger Lever

Trigger Mounting

1/8 in.

Optional 1/8 in. Pipe Nipple

Pipe Plug

Screw

Spring

Spool

Liner

Seat

Plug

Retaining ring must seat completely into groove to secure end cap in place when air cylinder is pressurized. Keep clear of cap when air pressure is applied or gun is triggered after reassembly.

17. Use 9/64 in. ball-point hex key to install and tighten socket head cap screw, which holds air cylinder to handle.

18. Reinstall valving rod and jam nut:

a. Thread jam nut as far as it will go onto threaded

end of piston shaft.

b. Ensure hex end of nut faces rear.

c. Thread valving rod as far onto threaded portion

of piston rod as possible.

3. Disconnect air supply from gun.

19. Thread packing nut into gun block by hand but do not tighten.

20. Install gun block:

a. Ensure ring is in place in top of gun block.

b. Carefully slide gun block onto valving rod

toward air cylinder.

c. Use 5/16 in. nut driver to install gun block onto

gun block mounting bracket.

21. Adjust valving rod (see Valving Rod Adjustment on page 14).

Replace Trigger Valve O-Rings

1. Clean gun (see Clean Spray Gun Procedure, page

19).

2. Perform Pressure Relief Procedure, page 17.

24 311338N

IG. 18: Replace Trigger Valve O-Ring

4. Use 6 in. adjustable wrench and 6 in. pliers to remove screw and locknut that hold trigger lever in place. Remove trigger lever.

5. Use 3/8 in. wrench to loosen and remove valve retainer nut.

6. Remove valve spool and spring:

a. Grab end of spool and pull out. Spring will come

out with spool. Do not lose spring--it belongs in hole at end of spool.

b. Remove old rings.

c. Apply thin coat of Lubriplate grease to new rings

and reinstall.

NOTE: Follow steps 7-14 to replace rings on valve liner. If rings do not need to be replaced, proceed to step 15.

7. Use 3/16 in. hex key to remove 1/8 in. rear internal plug. This plug seals another airflow path in gun handle.

NOTE: For guns configured with air inlet at rear of gun handle, pipe nipple replaces pipe plug. Remove pipe nipple.

8. Use 5/32 in. hex key to remove rear internal pipe plug (under pipe plug).

Page 25

Repair

9. Use pin punch and hammer to gently tap spring seat until it and valve liner push out opposite end of hole.

10. Remove rings on liner. Apply thin coat of Lubriplate grease to new rings and install.

11. Clean valve hole. Remove any dirt and debris. Apply thin coat of Lubriplate grease to inside of valve hole.

12. Slide spring seat into gun handle air valve hole, tapered end first, until it bottoms out.

13. Push valve liner in as far as it will go. Install valve retainer nut, it will align valve liner and spool to their proper depth.

14. Use 5/32 in. hex key to screw 1/16 in. pipe plug back into place. Apply think coat of pipe thread sealant to threads prior to insertion to help prevent air leaks.

15. Apply small amount of pipe thread sealant to 1/8 in. plug threads. Screw pipe plug in place.

16. Insert valve spool into valve liner with valve spool spring still in place. Screw in valve retainer nut; tighten until snug.

17. Use screw and locknut to reinstall trigger lever.

5. Turn PCD retainer counterclockwise and remove.

6. Remove PCD from mixing module retainer.

NOTE: To remove PCD that is stuck, set safety stop to OPEN, depress and release gun trigger to unseat it. CLOSE safety stop.

7. Remove mixing module retainer.

8. OPEN safety stop. Depress and release gun trigger to unseat it. Remove mixing module from end of valving rod. CLOSE safety stop.

9. Inspect valving rod for damage and replace as required. Use cloth soaked in gun cleaner or steel wool to clean and remove buildup of mixed material from rod.

NOTE: If valving rod is replaced, reset forward stop.

10. Clean mixing module.

NOTE: Ensure cleanout tool size matches module size used.Insert cleanout tool into pin vise.

d. Use cleanout tool to clean module ports. Make

sure not to insert tool too far, it will damage inside bore of module. Use cotton swab soaked

in gun cleaner to clean bore of module.

Clean Mixing Module

1. Flush gun (see Clean Spray Gun Procedure, page

19).

2. Connect air supply to gun. OPEN safety stop.

3. Remove air cap by hand.

IG. 19: Unthread Cap from PCD Body

4. Trigger gun and hold it to relieve pressure on PCD retainer.

IG. 20: Clean Module Ports

311338N 25

Page 26

Troubleshooting

Follow Pressure Relief Procedure, page 17, before checking or repairing gun.

NOTICE

To prevent cross-contamination of the equipment’s wetted parts, never interchange component A (isocyanate) and component B (resin) parts. The gun is shipped with the A side on the left. The gun block and the screen screw are marked.

Problem Cause Solution

Gun does not fully actuate Safety lock engaged Disengage piston safety lock

Air not vented on open/close ports Vent open air port when closing, vent

Loss of air Check air source

Fluid does not pour when gun is fully actuated

Gun actuates slowly Loss of air pressure Check air source

Gun delays, then actuates abruptly Cured material around the purge rod Inspect purge rod, mix module, and

Gun does not actuate Air supply to gun is shut off Open air supply

Pressure imbalance Plugged orifice ports Clean orifice ports

Fluid does not shut off when fluid valves are closed

Leak between air cylinder and fluid housing

Material leaking out weep ports in fluid housing near air cylinder

Closed manual valves Open valves Plugged orifice ports Clean orifice ports Plugged check valves Clean check valves Safety lock engaged Disengage piston safety lock

Damaged piston o-rings Replace air piston o-rings

Foam build-up around front tip Clean off front tip.

Plugged check valves Clean check valves Plugged fluid screens Clean screens Damaged fluid valves Replace

Damaged o-ring Replace

Mix module and rear seal worn Inspect and replace mix module and

Use the following table to check all possible problems and causes before disassembling gun. See Mainte-

nance on page 18 for referenced procedures.

close air port when opening

orifices. Replace if necessary

rear seal, clean fluid housing

26 311338N

Page 27

Parts

03)-!8

1, 25

GX-8 Gun Final Assembly (297898)

Parts

311338N 27

Page 28

Parts

GX-8 Gun Final Assembly (297898)

Ref. Part Description Qty.

1 15B772 HOSE, air, 1/4 in. x 23 in.

(F x F) 2 296128 GASKET, block, gasket 2 3 295623 VALVE, check, A 1 4 295624 VALVE, check, B 1 5 295596 PLUG, coupler 1 6 208536 Coupler, line, air 1 8 106560 PACKING, O-ring 1 9 295433 SCREW, mounting, block,

coupling 10 297680 NUT, seal, rear 1 11 297681 RETAINER, screen 2 12 297682 SCREW, mounting, block,

gun 13 297683 NUT, jam 1 14 297702 HANDLE, assembly 1 15 297684 RETAINER, PCD 1 16 295341 ROD, valving 1 17 297193 SCREEN, gun block, 100

mesh 18 297686 SCREW, screen, iso 1 19 297687 SCREW, screen, res 1 20 295437 PACKING, seal, rear 1 21 295338 MODULE, fan 1 22 297192 TIP, fan 1 23 297705 CAP, air 1 24 297901 BLOCK, gun 1 25 100030 Fitting 1

28 311338N

Page 29

GX-8 Handle Assembly (297702)

03)-!8

100

101

102

104

106

103

105

106

Parts

311338N 29

Page 30

Parts

125 PSI MAX

201

202

GX-8 Handle Assembly (297702) GX-8 Gun Kit (297832)

Ref. Part Description Qty.

72 295435 SEAL, u-cup 1 73 295709 SCREW, cap, socket head 2 74 295662 PLUG, pipe 1 75 295732 SCREW, cap, sh, 8-32 x 1/4

LG 76 103337 PACKING, ring 3 77 106555 PACKING, ring 4 79 C02032 NUT 1 80 296627 SEAL, u-cup 1 81 295692 TRIGGER, gun, spray 1 82 116624 SCREW, set, socket head 2 83 295693 PLUG, pipe 1 84 296971 SPRING 1 85 108103 PACKING, ring 1 86 168518 PACKING, ring 1 87 295665 FITTING, nipple, pipe 1 88 295671 SCREW, mounting, trigger 1 89 296538 RING, retaining 1 90 297689 HANDLE, gun 1 91 16T691 CYLINDER, air 1 92 295686 LINER, valve 1 93 295687 SPOOL, valve 1 94 295688 NUT, retainer, valve 1 95 295689 SEAT, spring 1 96 295436 SPRING 1 97 297691 PISTON, assembly 1 98 296529 CAP, end 1 99 297693 NEEDLE, adjust, air 1 100 296530 KNOB, gap 1 101 296526 PIN, stop 1 102 295416 SPRING, piston 1 103 297694 BRACKET, assembly 1 104 114054 PACKING, ring 1 105 C20004 SCREW, cap 2 106 295685 RING 4

Ref. Part Description Qty.

201 297898 GUN 1 202 295383 BLOCK, coupling 1 203296980 KIT, service; includes

203a-203k 203a SPRAYER, solvent, flush 1 203b VALVE, service, air 1 203c SCREW, mounting, block,

coupling 203d VALVE, manual 2 203e NIPPLE, JIC 1 203f SCREW, block, coupling 1 203g BLOCK, service 1 203h FITTING; 3/8 in. x 7/16 in. 1 203k HOSE; 3/16 ID x 3 ft 1 204297911 KIT, starter; includes

204a-204g 204a PIN, vise 1 204b MODULE, fan, 013 1 204c TIP, round, 020 1 204d MODULE, round, 020 1 204e TIP, round, 024 1 204f TIP, fan, 201 1 204g TIP, fan, 202 1

30 311338N

 Not shown.

Page 31

GX-8P Spray Gun Final Assembly (297860)

131

130

120

127

129

110

108

115

109

117

123

124

112

111

128

107

113

122

118

125

114

126

116

119

121

FIG. 21: GX-8P Spray Gun Final Assembly

Parts

311338N 31

Page 32

Parts

GX-8P Spray Gun Final Assembly (297860)

Ref. Part Description Qty.

107 15B772 HOSE, air, 1/4 X 23 in. (F X F) 1 108 296128 GASKET, block, gasket 2 109 295623 VALVE, check, A 1 110 295624 VALVE, check, B 1 111 295596 PLUG, coupler 1 112 208536 COUPLER, line, air 1 113 191872 FITTING, pipe, hex 1 114 106560 PACKING, o-ring 1 115 295433 SCREW, mounting, block,

coupling 116 297680 NUT, seal, rear 1 117 297681 RETAINER, screen 2 118 297682 SCREW, mounting, block,

gun 119 297683 NUT, jam 1 120 297684 RETAINER, pod 1 121 295341 ROD, valving 1 122 297861 CYLINDER, GX-8P, auto 1 123 297193 SCREEN, gun block,

100 mesh 124 297686 SCREW, screen, iso 1 125 297687 SCREW, screen, res 1 126 295437 PACKING, seal, rear 1 127 297705 AIR, cap 1 128 112307 ELBOW, street 1 129 297901 BLOCK, gun 1 130 297192 TIP, fan 1 131 295338 MODULE, fan 1

32 311338N

Page 33

GX-8P Auto Cylinder Assembly (297861)

FIG. 22: GX-8P Auto Cylinder Assembly

Parts

311338N 33

Page 34

Parts

GX-8P Auto Cylinder (297861)

Ref. Part Description Qty.

26 295435 SEAL, u-cup 1 27 295709 SCREW, cap, socket head 4 28 295732 SCREW, cap, sh,

8-32 X 1/4 LG 29 104376 SCREW, cap, sch 2 30 297743 TIE, cable, #6 1 31 C20988 PACKING, o-ring 2 32 103337 PACKING, o-ring 4 33 297253 WASHER, helical, .188 in.

diameter 34 104705 SCREW, cap, sch 2 35 296627 SEAL, u-cup 1 36 116624 SCREW, set, socket head 2 37 297862 SCREW, cap, flat head 1 38 108103 PACKING, o-ring 1 39 168518 PACKING, o-ring 1 40 297863 SCREW, cap, socket head 3 41 297975 WASHER, lock 3 42 297881 VALVE, control 1 43 297882 MANIFOLD, air valve 1 44 297883 GASKET 1 45 296538 RING, retaining 1 46 297690 CYLINDER, air 1 47 295436 SPRING 1 48 297691 PISTON, assembly 1 49 296529 CAP, end 1 50 297884 NEEDLE, air adjust 1 51 296530 KNOB, gap 1 52 296526 PIN, stop 1 53 297885 BRACKET 1 54 297886 BLOCK, valve mount 1 55 297887 BLOCK, cylinder mount 1 56 297888 PLATE, mounting, gun 1 57 297889 PLATE, cover, manifold 1 58 295416 SPRING, piston 1 59 114054 PACKING, o-ring 1 60 C20004 SCREW, cap 4 61 295685 O-RING 4

34 311338N

Page 35

Auto GX-8P Optional Parts

2,3,4

Parts

Ref. Part Description

1 297899 KIT, auto, GX-8 Gun 2 298752 WIRE, 10 ft, extension har-

ness

3 298753 WIRE, 25 ft, extension har-

ness

4 298754 WIRE, 50 ft, extension har-

ness 5 298611 ENCODER, assembly 6 299083 CABLE, VMU, extension 25 ft 7 297730 CABLE, encoder, assembly 8 297741 CONTROL BOX, TX50 pro-

cessor

Qty.

1 1

1 1 1 1

311338N 35

Page 36

Parts

Coupling Block Assembly (295383)

Qty

Ref. Part Description

62 295662 Pipe plug, flush seal, 1/8 in. 2 63 117634 B-swivel fitting 1 64 117635 A-swivel fitting 1 65 295693 Pipe plug, flush seal, 1/16 in. 2 66 296970 Manual valve assembly 2 67 296215 Coupling block 1

36 311338N

Page 37

Coupling Block (297902)

Parts

Ref. Part Description

67 295662 PLUG, pipe 70 296626 VALVE, assembly, manual 71 260810 Block, coupling

Qty.

2 2 1

311338N 37

Page 38

Parts

ti19795a

308

309

305

304

303

305

307

305

306

305

302

301

304

Apply pipe sealant to all male threads prior to assembly. Torque fittings to 120-130 in-lb (14-15 N•m)

Coupling Block Assembly (24N996)

Ref. Part Description

Qty.

301 296215 BLOCK, coupling, ss 1 302 296970 VALVE, manual 2 303 104071 PLUG, pipe 2 304 112307 FITTING, street elbow 2 305 C20895 FITTING, bushing, 1/4 x 1/8 4 306 117506 FITTING, swivel, 1/4 npt x #6 jic 1 307 122722 ADAPTER, jic06x1/4npt, mm, ms, 6k 1 308 122963 ADAPTER, swvl, jic05x1/4npt, fm, ms, 6 1 309 117455 FITTING, nipple, 1/4 npt x #5 jic 1

38 311338N

Page 39

Set-up Chart for GX-8P Modules

Pres-

sure (psi)

2500 1.0 4.0 295377 .013 1 .013 1 295339 (020)

2500 1.4 5.0 295377 .013 1 .013 1 295428 (024)

2500 1.0 6 295338 .013 1 .013 1 297192 (201)

2500 1.4 7 295338 .013 1 .013 1 297841 (202)

 At 18-24 in. above substrate

Output

(lbs/min)

Pattern

Dia.

(inches)

Module Part

No.

Round Spray Pattern

Resin

Port Size

Fan Spray Pattern

Orifices

No.

Iso Port

Size

No.

Orifices Tip

GX-8P Model Specifications

Module/Tip Data for Chemical Sprayed at 2500 PSI

Output

Module Kit Cleanout Drill Tip Pattern

Fan Spray Pattern

(lbs/min)

295338

(.098 diameter)

295377

(.098 diameter)

 Actual results may vary due to chemical system characteristics, temperature, pressure, and ratio.

297914

(.013 diameter)

297914

(.018 diameter)

297192 (201) 6 in. wide 1.0

297841 (202) 7 in. wide 1.4

Round Spray Pattern

295339 (020) 4 in. diameter 1.0

295428 (024) 5 in. diameter 1.4

Tool Kits

297966 GX-8P Tool Kit

 Includes appropriate cleanout drills.

311338N 39

Page 40

Technical Data

Category Data

Air Supply 100-125 psi (7-9 bars)

Maximum Operating Pressure 3500 psi (24 MPa, 240 bar) Maximum Output  0.4 gallons/min. (1.52 liters/min.) Minimum Output  0.1 gallons/min. (0.38 liters/min.)

Maximum sound pressure*† 78.7 db(A) 100 psi (0.7 MPa, 7 bar)

Maximum sound power**† 85.7 db(A) 100 psi (0.7 MPa, 7 bar)

Height 7 in. (17.8 cm)

Length 7.5 in. (19 cm)

Width 2.5 in. (6.25 cm)

Weight

Mixing Internal impingement, airless atomization, solvent-free,

Wetted Parts Stainless Steel, Carbon Steel, HDPE, Acetal

3.5 lbs. (1.59 kg)

mechanically self cleaning

 Theoretical: actual results will vary with operating conditions.

† Measured at typical operating conditions (clean-off valve on gun is a half turn open).

* Sound pressure measured 3 feet (1 meter) from equipment.

** Sound power measured per ISO-9416-2.

40 311338N

Page 41

Technical Data

311338N 41

Page 42

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com. For patent information, see www.graco.com/patents.

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor. Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Original instructions. This manual contains English. MM 311338

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Graco Headquarters: Minneapolis

www.graco.com

Revision N, November 2017