Graco 295530 Operation, Parts, Service And Repair
D series
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- Operation, parts, service and repair (34 pages) ,
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Operation, Parts, Service and Repair
Model D Spray Gun
For use with non-flammable polyurethane foams. For professional use only.
Not for use in explosive atmospheres.
See page 2 for model information.
1000 psi (7 MPa, 70 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions
in this manual. Save these instructions.
311320J
EN
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Table of Contents
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Summary of Contents for Graco 295530
- Page 1 Operation, Parts, Service and Repair Model D Spray Gun 311320J For use with non-flammable polyurethane foams. For professional use only. Not for use in explosive atmospheres. See page 2 for model information. 1000 psi (7 MPa, 70 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual.
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Page 2: Table Of Contents
Felt Wiper ......13 Graco Information ......38 Models Part No. -
Page 3: Warnings
Warnings Warnings The following general warnings are for the setup, use, grounding, maintenance, and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appearing in the body of the manual refer to these general warnings. When these symbols appear throughout the manual, refer back to these pages for a description of the specific hazard. - Page 4 Graco/Gusmer replacement parts only. • Do not alter or modify equipment. • Use equipment only for its intended purpose. Call your Graco/Gusmer distributor for infor- mation. • Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot sur- faces.
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Page 5: Important Two-Component Material Information
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. -
Page 6: For All Applications Except Spray Foam
Important Two-Component Material Information For all applications except spray Keep Components A and B foam Separate Cross-contamination can result in cured material in fluid Spraying or dispensing fluids that contain isocyanates cre- lines which could cause serious injury or damage equip- ates potentially harmful mists, vapors, and atomized partic- ment. -
Page 7: Foam Resins With 245 Fa Blowing Agents
Important Two-Component Material Information 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 sys- tem. Changing Materials NOTICE Changing the material types used in your equipment requires special attention to avoid equipment damage... -
Page 8: Overall View
Overall View Overall View Major Components Spring Retainer Case Valving Rod Closure Spring Valving Rod Positioner Valving Rod Adjustment Screw Valving Rod Stop Bar Valving Rod Gun Block Piston Rod Trigger Air Cap Adjustment Valve Coupling Block Coupling Block Mounting Screw . -
Page 9: Centerline Components
Overall View Centerline Components Gun Block Mounting Screw Screen Screw O-Ring A-Iso Check Valve Closure Screw Valving Rod Assembly Seal Felt Wiper Retainer Screen Gun Block Snap Ring Mixing Chamber Case R-Resin Check Valve Screen Mounting Screw Air Cap Coupling Block Gaskets . -
Page 10: Operation Basics
Ground the spray guy through connection to a Isocyanate Hazard Graco-approved grounded fluid supply hose. Coupling Block Spraying materials containing isocyanates creates potentially harmful mists, vapors, and Install Coupling Block atomized particulates. - Page 11 Operation Basics Manual Valves Remove Coupling Block Triggering gun with manual valves closed may cause crossover if gun ports contain residual chemical. To prevent release of pressurized chemical, close both manual valves before removing coupling block. 1. Disconnect air hose. Never open manual valves unless coupling block is secured to gun or exit port is directed 2.
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Page 12: Air Hose Connection
Operation Basics Air Hose Connection Valving Rod Adjustment Screw To CONNECT air hoses, pull back sleeve of female fitting, insert male fitting and slide Use to regulate amount of valving rod travel sleeve forward to secure connection. when gun trigger is depressed with air supply connected. -
Page 13: Air Cap Adjustment Valve
Operation Basics Air Cap Adjustment Valve 3. Use 5/16 in. open-end wrench to tighten retainer another half turn. Use to control amount of air that passes through air cap and over mixing chamber tip. Airflow helps keep tip free of sprayed chemi- cal. -
Page 14: Initial Set Up
Initial Set Up Initial Set Up 1. Remove coupling block from gun. a. Hold coupling block with exit ports pointed into disposable container. 2. Check valving rod clearance in closed posi- tion. Rod should extend approximately 1/32 b. Open each manual valve to allow in. -
Page 15: Daily Start-Up
Daily Start-Up Daily Start-Up Daily Shutdown Ensure gun is attached to coupling block and air hose, and the proportioning unit is at Follow when gun is out of service for any desired temperature and pressure. length of time. Daily disassembly of gun for cleaning is not recommended if it has been operating properly. -
Page 16: Pressure Relief Procedure
Pressure Relief Procedure Pressure Relief Procedure Relieve pressure before cleaning or repairing gun. 1. Close both manual valves. Manual Valves 2. Trigger gun once onto waste area to relieve fluid pressure in front end of gun. 3. Disconnect gun air supply, page 12. 4. -
Page 17: Spray Pattern Adjustment
Spray Pattern Adjustment Spray Pattern Adjustment This adjustment may create a large mass “bun” of urethane foam. Very high tempera- tures created by chemical reaction inside a bun may not dissipate after outside surface has cooled. A large bun may continue to react for several hours after spraying until flash (burning) point of foam is reached. - Page 18 Spray Pattern Adjustment 12). . 14: Split Pattern . 12: Opening Spray Pattern b. If full-round pattern cannot be achieved, 5. Fine tune spray pattern: ensure that material temperature and a. After you back out adjustment screw, spray pressure are correct. If pattern make fine adjustments (1/8 turns or less remains closed upon reaching maxi- in either direction as required) to obtain...
- Page 19 Spray Pattern Adjustment e. If buildup recurs shortly after cleaning • Check hose temperature setting. tip, remove air cap and ensure inside is • Check primary heater temperature setting. clean. • Ensure spray pressures between chemi- Reinstall air cap and ensure airflow is properly cals are balanced.
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Page 20: Maintenance
Maintenance Maintenance Gun Service Kits Use either the 1-Quart Gun Service Kit (296980) or 3-Gallon Gun Service Kit (296981) to perform daily flushing of spray gun without disassembly. . 16: 3-Gallon Gun Service Kit For more information about the 3-Gallon Gun Service Kit, see manual 311341. -
Page 21: Clean Spray Gun Procedure
Maintenance Clean Spray Gun Procedure vice procedure, page 22. Inspect air cap, mixing chamber, and gun block for build up of material and clean as required. Do not use metal cleaning devices to clean Thoroughly flush gun block with gun cleaner plastic components. -
Page 22: Repair
Repair Repair Shut down proportioner and allow chemicals to cool before performing any repair procedures. Clean Center Line Components using Gun Service Kit prior to performing any repair pro- cedures. Filter Screen Removal and 4. Clean and inspect screen cavity. If particles are visible, remove with cleanout drills and Service flush thoroughly with gun cleaner. -
Page 23: Clean Injection Slots
Repair Clean Injection Slots 7. Flush injection slots. With valving rod in open position, flush each injection slot with 1. Perform Pressure Relief Procedure (page gun cleaner. Press flush can needle firmly 16) and Clean Spray Gun Procedure, page into cleanout hole to create seal. Continue until gun cleaner sprays out chamber tip. -
Page 24: Valving Rod Adjustment
Repair Valving Rod Adjustment 5. Remove valving rod. Push back firmly on piston rod until end of Stop Bar emerges In closed position, valving rod should extend from cylinder. approximately 1/32 in. (1 mm) beyond tip of mixing chamber. If it does not, follow this pro- cedure: Positioner 1/32 in. -
Page 25: Centerline Component Removal
Repair Centerline Component tool into rear of gun block and tap with hammer until chamber ejects. Place cham- Removal ber in gun cleaner. Mixing Chamber Refer to Figure 2 to view centerline com- ponents. 1. Perform Pressure Relief Procedure (page 16) and Clean Spray Gun Procedure, page Chamber Knockout... - Page 26 Repair a. Remove ball and spring assembly. Hold check valve, use extractor tool to ball and unscrew assembly. If dirt or remove sleeve. Insert threaded end of material build-up prevents complete tool into cleanout port and, while press- removal of the spring, screw it back in. ing tool into gun block, turn it clockwise Soak assembly in gun cleaner and try to several times.
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Page 27: Centerline Component Installation
Repair Centerline Component 5. Thread felt wiper assembly into back of mixing chamber. Do not tighten. Installation CAUTION Failure to install felt wiper in rear of chamber All gun block parts must be clean and free allows internal chamber parts to fall out of damage before installation. - Page 28 Repair 10. Replace valving rod spring and spring retainer case. Grasp knob, push in, and turn clockwise to lock in place. 11. Replace air cap. 12. Replace check valves and screen screw assembly. 13. Replace closure screw in top of gun block. 14.
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Page 29: Notes
Notes Notes 311320J... -
Page 30: Parts
Parts Parts Model D Spray Gun Assembly 311320J... - Page 31 ★ Not shown. Mixing Coupling Valving Chamber Air Cap Cleanout Block (see Model No. Description Rod (K) (AC) (AK) Spade★ page 35) Tool Kit★ 295530 296597 D-55 296579 296634 295934 295887 296636 D-55- 295531 296597 RECIRC 296579 296634 295934 295884...
- Page 32 Parts Mixing Chamber Size Reference Size 296578 296579 296580 296581 296582 K (valving rod) 296594 (N-800) 296597 (N) 296598 (N) 296599 (N) 296600 (N) 296595 (N-810) 296586 (L) 296587 (L) 296588 (L) 297592 (L) 296584 (L-800) 296592 (L-LM) 296590 (L-800-LM) 296585 (L-810) AC (chamber) 296591 (L-810-LM)
- Page 33 Parts Standard Mixing Chambers Six standard mixing chambers are available. The following table provides a general description about use and operational performance of each chamber. Actual pattern sizes and outputs achieved may vary depending on material viscosity, hose length, condition of equipment, environ- ment, working pressure, and additional factors.
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Page 34: Air Cylinder Assembly
Parts Air Cylinder Assembly Part Number 296632 Ref. Part Description Qty. A❄ 107083 O-ring, fluoroelastomer 295494 Pan head machine screw, 8-32 x 3/16 in. 295177 Front head blank D❄ 296627 U-cup (pack of 5) E❄ 296628 U-cup (pack of 5) 295178 Cylinder G❄... -
Page 35: Coupling Block Assembly
Parts Coupling Block Assembly Model 295887 Model 295884 Model 295887 (Standard) Model 295884 (Recirc) Ref. Part Description Qty. Ref. Part Description Qty. 295662 Flush seal pipe plug, 1/8 in. 295889 A-swivel fitting 295888 R-swivel fitting 296626 Manual valve assembly 295889 A-swivel fitting (pack of 2) 296626... -
Page 36: Notes
Notes Notes 311320J... -
Page 37: Technical Data
Technical Data Technical Data Category Data Maximum Fluid Working Pressure 1000 psi (7 MPa, 70 bar) Maximum Air Inlet Pressure 100 psi (0.75 MPa, 7.5 bar) Minimum Air Inlet Pressure 90 psi (0.6 MPa, 6 bar) Maximum Output (flow rate) 16 lbs/min (7.3 kg/min) * Minimum Output (flow rate) 2 lbs/min (0.9 kg/min) *... -
Page 38: Graco Standard Warranty
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.