Graco 311338L - GX-8P Spray Gun Owner's Manual

Operation, Parts, Service, Repair

GX-8P Spray Gun

311338L

EN

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

Important Safety Instructions

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

GX-8 Model 297898

GX-8P Auto Model 297860

2

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

Mix Module

297898 

297860

Gun, GX-8

Gun, GX-8, Auto

24P633  Gun, GX-8, with manifold

295338 (013)

Tip

Includes:

Manifol d

Starter

Kit

Flushing

Kit

297192 (201)

24N996

Not Included

297911 296980



311338L

Warnings

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, 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.

311338L 3

4

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.

311338L

Important Two-Component Material Information

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 manu facturer’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 accord ing 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 regu latory authority. Follow all fluid manufacturer recommendations, including those regarding handling of con taminated clothing. After spraying, wash hands and face before eating or drinking.

• Hazard from exposure to isocyanates continues after spraying. Anyone without appropriate personal pro tective 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 recommenda tions of the fluid manufacturer and local regulatory authority. Posting a placard such as the following outside the work area is recommended:

TOXIC FUMES

HAZARD

DO NOT ENTER DURING

SPRAY FOAM APPLICATION

OR FOR ___ HOURS AFTER

APPLICATION IS COMPLETE

DO NOT ENTER UNTIL:

DATE: ____________

TIME: ____________

311338L 5

6


For all applications except spray foam

Keep Components A and B

Separate

Spraying or dispensing fluids that contain isocya nates 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 iso cyanates.

• Use of isocyanates involves potentially hazard ous procedures. Do not spray with this equip ment unless you are trained, qualified, and have read and understood the information in this man ual and in the fluid manufacturer’s application instructions and SDS.

• Use of incorrectly maintained or mis-adjusted equipment may result in improperly cured mate rial. 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 respira tor, 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 imperme able gloves, protective clothing and foot cover ings 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 eat ing or drinking.

Material Self-ignition

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

• Never interchange component A and component

B wetted parts.

• Never use solvent on one side if it has been con taminated 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 appropri ate lubricant when reassembling.

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

Some materials may become self-igniting if applied too thick. Read material manufacturer’s warnings and

Safety Data Sheet (SDS).

311338L

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.

• Check with your material manufacturer for chemi cal compatibility.

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


311338L 7

8

Overall View

Overall View

Gun Block

Mounting Screw

Air Cap

Safety Stop

125 PSI MAX

Air Cap Air

Adjustment

Valve

Gun Block

Manual

Valves

F IG . 1: GX-8P Overall View

Coupling

Block

Trigger

Centerline Components

B-Screen Screw

Pattern Control

Disc (PCD)

PCD

Retainer

Screen

Screen

Retainer

Gun Block

Mixing

Module

B-Check

Valve

Air Cap

Coupling

Block Gasket

F

IG

. 2: GX-8P Centerline Components

O-Ring

Jam Nut

Valving Rod

Assembly

Packing Nut

Rear Seal

Screen

Screen

Retainer

A-Check

Valve

Coupling Block

Mounting Screw

A-Screen

Screw

311338L

Mixing Module

Graco offers a variety of spray tip configurations to meet most applications that spray fast-reaction chemical sys tems at low outputs. GX-8P spray tip components con sist 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.

Valving Rod

Assembly

Fan Spray

Pattern

Mixing

Module

Round

Spray Pattern

F IG . 3: Mixing Module & PCD

Pattern

Control

Disc (PCD)

Overall View

311338L 9

Operation Basics

Operation Basics

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

Grounding

Disengage Safety Stop

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

Disengage the

Safety Stop

125 PSI MAX

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

Ground spray gun through connection to

Graco-approved grounded fluid supply hose.

Safety Position

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.

Engage the

Safety Stop

F IG . 5: Safety Stop - Disengaged

Air Hose Connection

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 fit ting.

Pull Sleeve

125 PSI MAX

F IG . 4: Safety Stop - Engaged

F IG . 6: Disconnect Air Hose

10 311338L

Operation Basics

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.

Close Manual Valves

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

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

Installation and Removal

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

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 counter clockwise approximately three full turns.

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.

Coupling

Block

Manual

Valves

F IG . 7: Open Manual Valves

311338L 11

Operation Basics

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 stan dard configuration, the air inlet is at base of handle. In the alternate configuration, the air inlet is at rear of gun.

Pipe Plug

B-Check

Valve

A-Check

Valve

125 PSI MAX

125 PSI MAX

Optional

Pipe Plug

Coupling Block

Gaskets

Coupling Screw

Mounting Screw

Pipe

Nipple

F 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 cou pling block manual valves are closed before attempting to service gun, or any time gun is not in use.

F 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 311338L

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: 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).

Operation Basics

311338L 13

Operation Basics

Valving Rod Adjustment

Valving rod should not require adjustment if it was shipped from factory with mixing module and PCD in stalled. 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.

Valving Rod

Assembly

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. Retighten 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 retighten if necessary.

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.

Packing

Nut Jam Nut

F IG . 10: Valving Rod Adjustments

14 311338L

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-iso cyanate hose (red-taped) to notched fitting on cou pling block. Connect B-resin hose (blue-taped) to fitting without notches on coupling block.


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 contami nants.


9. Install coupling block to gun.

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

311338L 15

Operation Basics

Daily Start-up Daily Shutdown

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.


2. Adjust air cap adjustment valve. Turn knob counter clockwise 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.

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.



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. How ever, if gun is removed from coupling block, it must be flushed and cleaned thoroughly.

16 311338L

Pressure Relief

Procedure

Pressure Relief Procedure

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

Relieve pressure before cleaning or repairing gun.


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

To relieve pressure in hose after gun is removed, place fluid manifold over containers, facing away from you.

Very carefully open fluid valves (F IG . 13). Under high

pressure, fluid will spray sideways from fluid ports.

Manual Valves

F IG . 11: Close Manual Valves


3.

Trigger gun onto cardboard or into waste container to relieve pressure.

F IG . 13: Open Manual Valves

2 !

F IG . 12: Trigger Gun

311338L 17

Maintenance

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.

F IG . 14: 1-Quart Gun Service Kit

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

F IG . 15: 3-Gallon Gun Service Kit

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

18 311338L

Maintenance

Clean Spray Gun Procedure

To avoid static sparking that may result in fire or explo sion, 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.

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 com ponents.

Flush Gun

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.



3. Remove gun from coupling block.

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.



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

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



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.

311338L 19

Repair

Repair

Remove Check Valve

Shutdown proportioner and allow chemicals to cool before servicing gun.

Service Screen Screw


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 visi ble, 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.

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

8. Flush gun with mixing module removed.


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 neces sary.

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. Isocy anate valve is notched for easy identification.

7. Install coupling block gaskets.

20 311338L

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.


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 valv ing rod. CLOSE safety stop.

NOTICE

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


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 reassem bly.

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.



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.

311338L 21

Repair

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.

Replace End Cap and Air

Piston Assembly

End Cap/Safety

Stop Assembly

End Cap

O-Ring

#8 Socket Head

Cap Screw

Retaining

Ring

Cylinder

Cup Seal

9. Install air cap and tighten by hand.

10. Adjust valving rod (see

Valving Rod Adjustment

,

page 14).

Piston

O-Ring

Piston

Spring

Piston

F IG . 16: End Cap and Air Piston Assembly

1. Clean gun (see Clean Spray Gun Procedure

on

page 19).


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.

f.

Unthread valving rod and jam nut from piston shaft.

22 311338L

Repair


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 reinstallation.

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. 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.

12. Disassemble safety stop mechanism: 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.

O-ring

End Cap

Cup Seal

Spring

Knob

Set Screws

Stop Pin

F IG . 17: End Cap/Safety Stop Assembly

14. Reassemble safety stop mechanism: 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.

311338L 23

Repair

3.

Disconnect air supply from gun.

Refer to

Parts , page 27.

Replace Trigger Valve

O-Rings

1. Clean gun (see Clean Spray Gun Procedure

, page

19).

2. Perform Pressure Relief Procedure

, page 17.

Valve

Liner

Spring

Seat

1/16 in. Pipe

Plug

Retaining ring must seat completely into groove to secure end cap in place when air cylinder is pressur ized. 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.

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).

O-rings

03)-!8

1/8 in.

Pipe Plug

Valve

Spring

Valve

Spool

Valve Retainer Nut

Optional 1/8 in.

Pipe Nipple

Trigger Mounting

Screw

Trigger Lever

F 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).

24 311338L

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 seal ant 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. Cleanmixing 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.

F IG . 20: Clean Module Ports

F IG . 19: Unthread Cap from PCD Body

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

311338L 25

Troubleshooting

Troubleshooting

Follow Pressure Relief Procedure , page 17, before

checking or repairing gun.

NOTICE

To prevent cross-contamination of the equipment’s wet ted 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.

Use the following table to check all possible problems

and causes before disassembling gun. See Mainte nance on page 18 for referenced procedures.

Problem

Gun does not fully actuate

Fluid does not pour when gun is fully actuated

Cause

Safety lock engaged

Air not vented on open/close ports

Loss of air

Closed manual valves

Plugged orifice ports

Plugged check valves

Solution

Disengage piston safety lock

Vent open air port when closing, vent close air port when opening

Check air source

Open valves

Clean orifice ports

Clean check valves

Gun actuates slowly

Gun does not actuate

Damaged piston o-rings

Gun delays, then actuates abruptly Cured material around the purge rod Inspect purge rod, mix module, and orifices. Replace if necessary

Air supply to gun is shut off

Foam build-up around front tip

Replace air piston o-rings

Open air supply

Clean off front tip.

Pressure imbalance

Safety lock engaged

Loss of air pressure

Disengage piston safety lock

Check air source

Plugged orifice ports

Plugged check valves

Plugged fluid screens

Damaged fluid valves

Clean orifice ports

Clean check valves

Clean screens

Replace Fluid does not shut off when fluid valves are closed

Leak between air cylinder and fluid housing

Damaged o-ring Replace

Material leaking out weep ports in fluid housing near air cylinder

Mix module and rear seal worn Inspect and replace mix module and rear seal, clean fluid housing

26 311338L

Parts

Parts

GX-8 Gun Final Assembly (297898)

12

23

15

22

21

24

17

11

4

19

8

20

10

16

13

11

3

2

17 18

14

03)-!8

9

1, 25

5

6

311338L 27

Parts

GX-8 Gun Final Assembly (297898)

Ref. Part Description

1

6

8

9

4

5

2

3

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

(F x F)

296128 GASKET, block, gasket

295623 VALVE, check, A

295624 VALVE, check, B

295596 PLUG, coupler

208536 Coupler, line, air

106560 PACKING, O-ring

295433 SCREW, mounting, block, coupling

10 297680 NUT, seal, rear

11 297681 RETAINER, screen

12 297682 SCREW, mounting, block, gun

13 297683 NUT, jam

14 297702 HANDLE, assembly

15 297684 RETAINER, PCD

16 295341 ROD, valving

17 297193 SCREEN, gun block, 100 mesh

18 297686 SCREW, screen, iso

19 297687 SCREW, screen, res

20 295437 PACKING, seal, rear

21 295338 MODULE, fan

22 297192 TIP, fan

23 297705 CAP, air

24 297901 BLOCK, gun

25 100030 Fitting

1

1

1

1

2

1

2

1

1

1

1

1

1

1

1

1

Qty.

1

1

1

1

1

1

2

1

28 311338L

GX-8 Handle Assembly (297702)

85

96

100

72

98

97

104

102

101

91

75

106

80

103

82

89

105

79 94

92

81

88

93

86

99

84

95

76

77

73

03)-!8

106

76

83

90

87

74

Parts

311338L 29

Parts

GX-8 Handle Assembly (297702)


72 295435 SEAL, u-cup

73 295709 SCREW, cap, socket head

74 295662 PLUG, pipe

75 295732 SCREW, cap, sh, 8-32 x 1/4

LG

76 103337 PACKING, ring


79 C02032 NUT

80 296627 SEAL, u-cup

81 295692 TRIGGER, gun, spray

82 116624 SCREW, set, socket head


84 296971 SPRING



87 295665 FITTING, nipple, pipe

88 295671 SCREW, mounting, trigger

89 296538 RING, retaining

90 297689 HANDLE, gun

91 16T691 CYLINDER, air

92 295686 LINER, valve

93 295687 SPOOL, valve

94 295688 NUT, retainer, valve

95 295689 SEAT, spring

96 295436 SPRING

97 297691 PISTON, assembly

98 296529 CAP, end

99 297693 NEEDLE, adjust, air

100 296530 KNOB, gap

101 296526 PIN, stop

102 295416 SPRING, piston

103 297694 BRACKET, assembly


105 C20004 SCREW, cap

106 295685 RING

Qty.

1

1

1

2

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

1

3

4

GX-8 Gun Kit (297832)

202

125 PSI MAX

201


201 297898 GUN

202 295383 BLOCK, coupling

203  296980 KIT, service; includes

203a-203k

203a

203b

203c

SPRAYER, solvent, flush

VALVE, service, air

SCREW, mounting, block,

204a

204b

204c

204d

204e

204f

204g

203d

203e

203f

203g coupling

VALVE, manual

NIPPLE, JIC

SCREW, block, coupling

203h

203k

BLOCK, service

FITTING; 3/8 in. x 7/16 in.

HOSE; 3/16 ID x 3 ft

204  297911 KIT, starter; includes

204a-204g

PIN, vise

MODULE, fan, 013

TIP, round, 020

MODULE, round, 020

TIP, round, 024

TIP, fan, 201

TIP, fan, 202



Not shown.

Qty.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

1

30 311338L

GX-8P Spray Gun Final Assembly (297860)

131

130

120

122

118

127

129

125

114

126

116

121

119

117 123

124

110

109

108

115

F

IG

. 21: GX-8P Spray Gun Final Assembly

113

128

107

111

112

Parts

311338L 31

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

109 295623 VALVE, check, A

110 295624 VALVE, check, B

111 295596 PLUG, coupler

112 208536 COUPLER, line, air

2

1

113 191872 FITTING, pipe, hex

114 106560 PACKING, o-ring

115 295433 SCREW, mounting, block, coupling

116 297680 NUT, seal, rear

117 297681 RETAINER, screen

118 297682 SCREW, mounting, block,

1

1

1

1

1

1

1

2

1 gun

119 297683 NUT, jam

120 297684 RETAINER, pod

121 295341 ROD, valving

122 297861 CYLINDER, GX-8P, auto

123 297193 SCREEN, gun block,

100 mesh

124 297686 SCREW, screen, iso

125 297687 SCREW, screen, res

126 295437 PACKING, seal, rear

127 297705 AIR, cap

128 112307 ELBOW, street

129 297901 BLOCK, gun

130 297192 TIP, fan

131 295338 MODULE, fan

1

1

1

1

2

1

1

1

1

1

1

1

1

32 311338L

Parts

GX-8P Auto Cylinder Assembly (297861)

51

47

49

26

52

58

59

48

38

35

28

46

36

45

53

61

55

60

30

39

50

27

37

60

31

61

44

43

32

54

32

57

33

34

29

33

42

56

40

41

F IG . 22: GX-8P Auto Cylinder Assembly

311338L 33

Parts

GX-8P Auto Cylinder (297861)


26 295435

27 295709

28 295732

SEAL, u-cup

SCREW, cap, socket head

SCREW, cap, sh,

8-32 X 1/4 LG

29 104376

30 297743

31 C20988 PACKING, o-ring

32 103337

33 297253

SCREW, cap, sch

TIE, cable, #6

PACKING, o-ring

WASHER, helical, .188 in.

34 104705

35 296627

36 116624

37 297862

38 108103

39 168518

40 297863

41 297975

42 297881

43 297882

44 297883

45 296538

46 297690

47 295436

48 297691

49 296529

50 297884

51 296530

52 296526

53 297885

54 297886

55 297887

56 297888

57 297889 diameter

SCREW, cap, sch

SEAL, u-cup

SCREW, set, socket head

SCREW, cap, flat head

PACKING, o-ring

PACKING, o-ring

SCREW, cap, socket head

WASHER, lock

VALVE, control

MANIFOLD, air valve

GASKET

RING, retaining

CYLINDER, air

SPRING

PISTON, assembly

CAP, end

NEEDLE, air adjust

KNOB, gap

PIN, stop

BRACKET

BLOCK, valve mount

BLOCK, cylinder mount

PLATE, mounting, gun

58 295416

59 114054

PLATE, cover, manifold

SPRING, piston

PACKING, o-ring

60 C20004 SCREW, cap

61 295685 O-RING

Qty.

1

4

1

2

4

2

1

4

1

1

1

1

1

1

1

1

4

4

1

1

1

1

1

1

1

1

1

1

3

3

1

1

2

1

2

1

34 311338L

Auto GX-8P Optional Parts

8

2,3,4

7


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

1

1 ness

5 298611 ENCODER, assembly 1

6 299083 CABLE, VMU, extension 25 ft 1

7 297730 CABLE, encoder, assembly 1

8 297741 CONTROL BOX, TX50 pro cessor

1

1

1

6

2,3,4

1

5

Parts

311338L 35

Parts

Coupling Block Assembly (295383)

66

62

62

63

65


62 295662 Pipe plug, flush seal, 1/8 in.

63 295888 B-swivel fitting

64 295889 A-swivel fitting

65 295693 Pipe plug, flush seal, 1/16 in.

66 296970 Manual valve assembly

67 296215 Coupling block

Qty

.

1

2

2

1

2

1

64

67

36 311338L

Coupling Block (297902)

70

67

Parts

71



70 296626 VALVE, assembly, manual

71 260810 Block, coupling

Qty.

2

2

1

311338L 37

Parts

Coupling Block Assembly (24N996)

306 302

305

305

301

307

305

Apply pipe sealant to all male threads prior to assembly. Torque fittings to

120-130 in-lb (14-15 N•m) ti19795a


301 296215 BLOCK, coupling, ss

302 295430 VALVE, manual

303 104071 PLUG, pipe

304 112307 FITTING, street elbow

305 C20895 FITTING, bushing, 1/4 x 1/8

306 117506 FITTING, swivel, 1/4 npt x #6 jic

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

4

1

1

2

2

1

2

304

308

309

303

305

304

38 311338L

Set-up Chart for GX-8P Modules

Set-up Chart for GX-8P Modules

Pressure

(psi)

Output

(lbs/min)

2500

2500

2500

2500

1.0

1.4

1.0

1.4

Pattern

 Dia.

(inches)

4.0

5.0

6

7

Module Part

No.

Resin

Port

Size

No.

Orifices

295377

295377

Round Spray Pattern

.013

.013

Fan Spray Pattern

1

1

295338

295338

.013

.013

1

1

Iso Port

Size

No.

Orifices

.013

.013

.013

.013

1

1

1

1

Tip

295339 (020)

295428 (024)

297192 (201)

297841 (202)

 At 18-24 in. above substrate

GX-8P Model Specifications

Module/Tip Data for Chemical Sprayed at 2500 PSI

 Module Kit

295338

(.098 diameter)

295377

(.098 diameter)

Cleanout Drill

297914

(.013 diameter)

297914

(.018 diameter)

Tip

Fan Spray Pattern

297192 (201)

297841 (202)

Round Spray Pattern

295339 (020)

295428 (024)

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



 Pattern

6 in. wide

7 in. wide

4 in. diameter

5 in. diameter

Includes appropriate cleanout drills.

 Output

(lbs/min)

1.0

1.4

1.0

1.4

Tool Kits

297966 GX-8P Tool Kit

311338L 39

Technical Data

Technical Data

Category

Air Supply

Maximum Operating Pressure

Maximum Output 

Minimum Output 

Maximum sound pressure*†

Maximum sound power**†

Height

Length

Width

Weight

Mixing

Wetted Parts

Data

100-125 psi (7-9 bars)

3500 psi (24 MPa, 240 bar)

0.4 gallons/min. (1.52 liters/min.)

0.1 gallons/min. (0.38 liters/min.)

78.7 db(A) 100 psi (0.7 MPa, 7 bar)

85.7 db(A) 100 psi (0.7 MPa, 7 bar)

7 in. (17.8 cm)

7.5 in. (19 cm)

2.5 in. (6.25 cm)

3.5 lbs. (1.59 kg)

Internal impingement, airless atomization, solvent-free, mechanically self cleaning

Stainless Steel, Carbon Steel, HDPE, Acetal

 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 311338L

Technical Data

311338L 41

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/pantents.

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

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

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

Copyright 2006, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.

www.graco.com

Revision L, December 2016

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