Graco EP 24C932 Instructions Manual
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Graco EP 24C932 Instructions Manual

Graco EP 24C932 Instructions Manual

Plural component, impingement mix, mechanical purge pour gun with throat seal liquid technology
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Instructions - Parts
™
EP
Gun
Plural Component, Impingement Mix, Mechanical Purge Pour Gun
with Throat Seal Liquid
For use with non-flammable foam. Not for use in explosive atmospheres.
Model 257999, 24C932, 24C933, 24C934
3000 psi (20.7 MPa, 207 bar) Maximum Fluid Working Pressure
80-100 psi (0.55-0.69 MPa, 5.5-6.9 bar) Air Inlet Pressure Range
180°F (82°C) Maximum Fluid Temperature
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
US Patent Pending
™
Technology
313872B
ENG
TI14450a

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Summary of Contents for Graco EP 24C932

  • Page 1 Instructions - Parts ™ Plural Component, Impingement Mix, Mechanical Purge Pour Gun with Throat Seal Liquid For use with non-flammable foam. Not for use in explosive atmospheres. Model 257999, 24C932, 24C933, 24C934 3000 psi (20.7 MPa, 207 bar) Maximum Fluid Working Pressure 80-100 psi (0.55-0.69 MPa, 5.5-6.9 bar) Air Inlet Pressure Range 180°F (82°C) Maximum Fluid Temperature Important Safety Instructions...

  • Page 2: Table Of Contents

    Contents Related Manuals ......3 Models ........4 Orifice Flow Area Ratio Chart .

  • Page 3: Related Manuals

    Related Manuals Manuals are available at www.graco.com. Component manuals in U.S. English: Power-Lock Heated Hose Part Description 309572 Instructions - Parts Solvent Flush Kits Part Description 309963 Instructions - Parts Circulation Manifold Kit Part Description 309818 Instructions - Parts Heated Hoses and Applicator Kits Part Description 3A0237...

  • Page 4: Models

    Models Models Purge Rod Diameter Part in. (mm) 257999 0.250 (6.35) 24C932 0.250 (6.35) 24C933 0.375 (9.53) 24C934 0.375 (9.53) Orifice Flow Area Ratio Chart In general, flow area ratio should be equal to material ratio but will be influenced by material viscosity. The ideal flow area ratio is dependent on flow rates, material viscosity, and material ratio.

  • Page 5: Fixed Orifice Flowrate Data

    Fixed Orifice Flowrate Data 5.00 4.75 4.50 4.25 4.00 3.75 3.50 3.25 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00 313872B EP Fixed Orifice Flow Data 0.086 in. Diameter Orifice 0.067 in. Diameter Orifice 0.060 in. Diameter Orifice 0.047 in.

  • Page 6: Variable Orifice Flowrate Data

    Models Variable Orifice Flowrate Data 0.086 0.073 0.067 0.063 0.060 0.055 0.052 0.047 0.041 0.039 0.033 0.031 0.028 0.024 0.020 0.00 0.25 0.50 0.75 1.00 VARIABLE ORIFICE FLOWRATE DATA (1000 PSI) 1.25 1.50 1.75 2.00 2.25 2.50 2.75 FLOWRATE (gpm) * To calculate flow in lb/min, multiply gpm rate by 10.
  • Page 7 0.086 0.073 0.067 0.063 0.060 0.055 0.052 0.047 0.041 0.039 0.033 0.031 0.028 0.024 0.020 0.00 0.25 0.50 0.75 1.00 313872B VARIABLE ORIFICE FLOWRATE DATA (1500 PSI) 1.25 1.50 1.75 2.00 2.25 2.50 2.75 FLOWRATE (gpm) * To calculate flow in lb/min, multiply gpm rate by 10. Example: 2 gpm x 10 = 20 lb/min.
  • Page 8 Models 0.086 0.073 0.067 0.063 0.060 0.055 0.052 0.047 0.041 0.039 0.033 0.031 0.028 0.024 0.020 0.00 0.25 0.50 0.75 1.00 VARIABLE ORIFICE FLOWRATE DATA (2000 PSI) 1.25 1.50 1.75 2.00 2.25 2.50 2.75 FLOWRATE (gpm) * To calculate flow in lb/min, multiply gpm rate by 10. Example: 2 gpm x 10 = 20 lb/min.

  • Page 9: 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 symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable.
  • Page 10 Warnings FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help pre- vent 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).

  • Page 11: Important Two-Component Material Information

    Important Two-Component Material Information Isocyanate Conditions Spraying or dispensing materials containing isocya- nates creates potentially harmful mists, vapors, and atomized particulates. Read material manufacturer’s warnings and material MSDS to know specific hazards and precautions related to isocyanates. Prevent inhalation of isocyanate mists, vapors, and atomized particulates by providing sufficient ventila- tion in the work area.

  • Page 12: Changing Materials

    Important Two-Component Material Information Changing Materials • When changing materials, flush the equipment mul- tiple times to ensure it is thoroughly clean. • Always clean the fluid inlet strainers after flushing. • Check with your material manufacturer for chemical compatibility. •...

  • Page 13: Throat Seal Liquid

    Throat Seal Liquid Read material MSDS to know specific hazards and precautions related to Throat Seal Liquid. Grounding Check your local electrical code and proportioner man- ual for detailed grounding instructions. Ground the pour gun through connection to a Graco-approved grounded fluid supply hose. Always ground the gun when flushing.

  • Page 14: Loss Of Air Pressure

    Loss of Air Pressure Loss of Air Pressure Purge rod actuation is controlled by air pressure. In event of loss of air pressure, the purge rod will remain retracted, the impingement ports will remain open, and the gun will continue to pour. To stop pouring, do one of the following: •...
  • Page 15 Hook Support 313872B...

  • Page 16: Component Identification

    Component Identification Component Identification See Parts on page 42 for part numbers and further component identification. Key: Hook Support Fluid Housing Orifice Fluid Manifold Air Cylinder, Gun Body Mounting Plate Electric Trigger Handle (optional) Dual Pistons Bulkhead Piston Safety Lock Throat Seal Liquid Cartridge Airline Fitting Solenoid Valve Gasket...

  • Page 17: Cutaway View

    Cutaway View 313872B Component Identification TI14462a...

  • Page 18: Theory Of Operation

    Theory of Operation Theory of Operation Gun Triggered (Fluid Pouring) Purge rod retracts, opening the impingement ports and allowing fluid to mix and flow through the nozzle. Throat Seal Liquid lubricates the purge rod. Purge Rod Side View Top View Gun Detriggered Purge rod extends, closing the impingement ports and stopping fluid flow.

  • Page 19: Setup

    Setup Perform this setup procedure to get the pour gun ready for operation. 1. Close fluid valves A and B. TI2411a 2. Connect A and B fluid hoses to fluid manifold. 3. Engage piston safety lock. See page 13. 4. Connect gun air whip hose (AA) and air valve (AB) to main air hose.

  • Page 20: Adjust Orifices

    Setup 11. Engage piston safety lock. See page 13. 12. Perform Bleed Throat Seal Liquid Cartridge pro- cedure. See page 24. 13. Turn on proportioner. See proportioner manual. 14. Open fluid valves A and B. 15. Disengage piston safety lock. See page 13. 16.

  • Page 21: Optional Hose Position

    Optional Hose Position As shipped, fluid inlet swivel fittings point to rear of the gun. If desired, use the following procedure to make the fluid inlet swivel fittings point downward. NOTICE To prevent cross-contamination of gun’s wetted parts, do not interchange A component (isocyanate) and B component (resin) parts.

  • Page 22: Pressure Relief Procedure

    Pressure Relief Procedure Pressure Relief Procedure 1. Engage piston safety lock. See page 13. NOTE: Air supply is required for purge rod actuation. Do not disconnect gun air supply until fluid pressure is relieved. 2. Close fluid valves A and B. Leave air valve (AB) open.

  • Page 23: Shutdown

    Shutdown Short Term Shutdown Perform Short Term Shutdown procedure if gun will not be used for more than one hour. 1. Perform Pressure Relief Procedure on page 22. 2. Trigger gun 3-4 times with piston safety lock engaged in order to ensure material does not build up on the purge rod.

  • Page 24: Maintenance

    Maintenance Maintenance Procedure Bleed Throat Seal Liquid Car- tridge, page 24 Replace Mix Chamber and Front Seal, see page 30 Clean Clean Check Valves, page 27 Clean Outside of Gun, page 25 Replace Throat Seal Liquid Car- tridge, page 31 Clean Breather Plug, page 26 Clean Fluid Manifold, page 26 Clean Fluid Housing Passages,...

  • Page 25: Flush Gun

    Flush Gun 1. Follow Pressure Relief Procedure, page 22. 2. Remove fluid manifold (AD). . 16 3. Disconnect signal cable. 4. Install flush hoses to flush manifold 15B817. See . 17. Install flush manifold onto gun. Torque flush manifold bolt to 20-30 in-lb (2.26-3.39 N•m). .

  • Page 26: Clean Breather Plug

    Maintenance Clean Breather Plug The solvents listed in this section may ignite if used in flushing. Use them only for external cleaning. Remove and clean breather plug with compatible sol- vent. See materials of construction info in Technical Data, page 55. The breather plug is part of the solenoid manifold assembly (30).

  • Page 27: Clean Check Valves

    Clean Check Valves 1. Follow Pressure Relief Procedure, page 22. 2. Flush Gun, page 25. 3. Disconnect air quick coupler (AC). Use hex nut driver to remove fluid manifold (AD). 4. Disconnect signal cable. 5. Clean and inspect check valve mating surfaces and fluid ports.

  • Page 28: Clean Fluid Housing Passages

    Maintenance 11. Use hex nut driver to install fluid manifold (AD). Torque fluid manifold bolt to 20-30 in-lb (2.26-3.39 N•m). Connect air quick coupler (AC). 12. Connect signal cable. Clean Fluid Housing Passages If necessary, use drill bits to clean the passages in the fluid housing and gun body.

  • Page 29: Clean Orifice

    Clean Orifice 1. Follow Pressure Relief Procedure on page 22. 2. Use 5/16 in. nut driver (supplied) to remove orifices (C). See F . 4 on page 16. NOTICE To prevent cross-contamination of the orifices do not interchange A component and B component parts.

  • Page 30: Replace Mix Chamber And Front Seal

    Maintenance Replace Mix Chamber and Front Seal 1. Use nut driver to open the Throat Seal Liquid bleed port and drain all Throat Seal Liquid or replace with empty cartridge. . 24: Open the Bleed Port 2. Follow Pressure Relief Procedure on page 22. 3.

  • Page 31: Repair

    Repair Tools Required Tools required to complete some gun repair procedures: • 15/16 in. wrench • flat head screwdriver (supplied) • 5/16 hex nut driver (supplied) • 1/2 in. socket • 3/4 in. socket • 5/64 in. allen wrench (supplied) •...
  • Page 32 Repair 4. Use 5/16 in. nut driver to verify Throat Seal Liquid bleed port is closed. 5. Remove plastic cap from new Throat Seal Liquid cartridge. . 27 6. Insert cartridge into gun body. Ensure cartridge tabs are aligned correctly with cartridge tab recesses in gun body.

  • Page 33: Remove Front End

    Remove Front End NOTICE Proper attachment of front end is critical. Do not operate gun if front end is loose or not snug against body. Improper attachment can cause slow leaks. 1. Perform Pressure Relief Procedure, page 22. 2. Flush Gun, see page 25. 3.

  • Page 34: Disassemble Front End

    Repair Disassemble Front End 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 fluid manifold, fluid housing, side seal assembly, check valve cartridge, and mix chamber are marked on the A side.

  • Page 35: Attach Front End

    4. Install purge rod into rear of fluid housing. Leave 3/4 in. of ball socket end of purge rod extended out of housing as shown in F . 31. 5. Install check valve assembly. See Clean Check Valves on page 27 for detailed assembly instruc- tions.
  • Page 36 Repair 2. Use hex nut driver to remove fluid manifold (AD). 3. Disconnect signal cable. 4. Remove Front End, see page 33. 5. Disconnect air quick coupler (AC). 6. Unscrew piston safety lock assembly and remove. Inspect o-ring and replace if necessary. 7.

  • Page 37: Purge Rod

    18. Use hex nut driver to install fluid manifold (AD). Torque fluid manifold bolt to 20-30 in-lb (2.26-3.39 N•m). Connect air quick coupler (AC). 19. Connect signal cable. 313872B Purge Rod 1. Flush Gun, page 25. 2. Follow Pressure Relief Procedure, page 22. 3.

  • Page 38: Solenoid Valve

    Repair Solenoid Valve 1. Follow Pressure Relief Procedure on page 22. 2. Disconnect air quick coupler (AC). Use hex nut driver to remove fluid manifold (AD). 3. Disconnect electronic cables from solenoid valve and handle (if installed). 4. Use 5/32 in. allen wrench to remove handle mount- ing plate screws.

  • Page 39: Troubleshooting

    Troubleshooting Follow Pressure Relief Procedure, page 22, 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 fluid manifold, fluid housing, side seal assembly, check valve cartridge, and mix chamber are marked on the A side.
  • Page 40 Troubleshooting Problem Fluid does not shut off when fluid valves are closed Burst of air from muffler when gun is triggered Steady air leakage from muffler Leak between air cylinder and fluid housing Throat Seal Liquid cartridge installa- tion or removal is difficult Throat Seal Liquid cartridge is pres- sure locked in cartridge bore Cannot bleed Throat Seal Liquid car-...

  • Page 41: Electrical Diagram

    Electrical Diagram 313872B MALE BLACK #2 BLACK #1 BROWN BLUE MALE Troubleshooting FEMALE SWITCH SIGNAL 24VDC COMMON SOLENOID ACTIVATION FEMALE MALE...

  • Page 42: Parts

    Parts Parts Model 257999 Shown ti14469a ti14472a Part is only included with 375 orifices. Torque to 125-135 in-lb (14.1-15.3 N•m) Torque to 20-30 in-lb (2.26-3.39 N•m) Torque to 100-110 in-lb (11.3-12.4 N•m) Torque to 10-12 in-lb (1.13-1.36 N•m) Torque to 60-70 in-lb (6.78-7.91 N•m) Part is only included with 250 applicator.
  • Page 43 Part Description 24D682 CYLINDER, machined 24C413 HOOK, vertical mount assem- 113003 SCREW, socket head cap 16A425 SHAFT, piston, dual PACKING, o-ring 15Y977 PISTON, front PACKING, o-ring 15Y976 BULKHEAD, applicator PACKING, o-ring 15Y978 PISTON, rear O-RING 24D295 STOP, assy, safety 15T897 PLUG, air valve 188554 PACKING, o-ring...
  • Page 44 Parts Part Description 24D315 GASKET, solenoid, manifold 257977 MANIFOLD, solenoid, assy 106245 SCREW, socket head cap 24D318 VALVE, solenoid, 4 way 24D319 CORD SET, euro/male, din/female 15Y968 PLATE, adapter, handle 15D256 SCREW, socket head cap 24D073 HANDLE, 2k dispense C19980 SCREW, cap, socket hd 172479 ▲...

  • Page 45: Kits

    Kits See Maintenance on page 24 and Repair on page 31 for appropriate kit installation procedures. See Com- plete O-ring Placement Guide on page 52 for o-ring identification help. Parts included in Kit Description Description Kit Number 250 Mix 24D314 Mix Chamber Chamber Front Bearing...
  • Page 46 Kits Parts included in Kit Description Description Kit Number 250 Orifice 24C751 - Orifice Housing 24C756, O-Ring 24C805 - O-Ring 24C815; see Orifice O-Ring Kits on Needle page 50 Backup Ring O-Ring Orifice Cap Cleanout Drill 375 Orifice 24C761 - Orifice Housing 24C766, O-Ring...
  • Page 47 Parts included in Kit Description Description Kit Number Iso Check 246731 Check Valve Hous- Valve Spring Retaining Screw Carbide Ball Filter Check Valve Spring O-Ring O-Ring Check Valve 246352 Check Valve Hous- Spring Retaining Screw Carbide Ball Filter Check Valve Spring O-Ring O-Ring 40 Mesh Fil-...
  • Page 48 Kits Parts included in Kit Description Description Kit Number Check Valve 248133 O-Ring Face O-Ring 250 Fluid 24D313 Housing Outer Housing O-Ring Seals Housing Inner O-Ring Outer Fluid 24E611 O-Ring Housing O-Ring Kit Inner Fluid 256773 O-Ring Housing O-Ring Kit 250 Lip Seal 24E252 250 Lip Seal...
  • Page 49 Parts included in Kit Description Description Kit Number Piston Safety 24D295 Back Cap Stop O-Ring Piston Stop Safety Stop Shaft O-Ring Spring Stop Shaft 257425 O-Ring O-Ring Kit Handle 24D073 2K Electric Handle Handle Mounting Screw Trigger 24D049 Trigger Switch Switch Har- Switch Spacer ness...

  • Page 50: Orifice Kits

    Kits Parts included in Kit Description Description Kit Number TSL Check 24B843 Check Valve Seat Valve Kit Ball Spring O-Ring Orifice Kits In the following table, shaded rows indicate “Super Stan- dard” items that are typically stocked and provide the best delivery dates.

  • Page 51: Drill Bit Kits

    Drill Bit Kits For cleaning fluid housing passages and orifices. Drill bit illustrations are actual size for comparison. See Clean Fluid Housing Passages on page 28. Not all sizes are used with every gun model. Drill Bit Qty in Number Size 24D289 0.016...

  • Page 52: Complete O-Ring Placement Guide

    Kits Complete O-ring Placement Guide The following illustration shows all gun o-rings at actual size. See Kits on page 45 for o-ring kit details including quantities of each o-ring in each kit. Part 119421 111450 123449 117724 103338 C20138 102867 123150 112319 C20272...

  • Page 53: Accessories

    Accessories Lubricant for Gun Rebuild NOTICE Use only Throat Seal Liquid on the o-rings, seals, and threads of the Throat Seal Liquid cartridge. Fusion grease or other petroleum-based or vegeta- ble-based lubricants will cause cartridge o-rings and seals to swell and stick. 248279, 4 oz (113 gram) [10] High adhesion, water resistant, lithium-based lubricant.

  • Page 54: Solvent Flush Canister Kit

    Accessories Solvent Flush Canister Kit 256510, 1 qt (0.95 liter) Solvent Cup Includes flushing manifold to flush gun with solvent. Por- table for remote flushing. See manual 309963. TI14470a Solvent Flush Pail Kit 248299 5.0 gal. (19 liter) Pail Includes flush manifold with individual A and B shutoff valves, and air regulator.

  • Page 55: Technical Data

    Technical Data Maximum Fluid Working Pressure ....Minimum Air Inlet Pressure..... . Maximum Air Inlet Pressure .

  • Page 56: Dimensions

    Technical Data Dimensions Side View Bottom View TI14487a Ref Dimension, in. (mm) 10.8 (274) 11.7 (297) 6.1 (155) 3.1 (79) 0.73 (19) 1.06 (27); Mounting: 4x 10-24 TI14488a 313872B...
  • Page 57 Technical Data 313872B...

  • Page 58: Graco Standard Warranty

    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 manual is also suitable for:

Ep 313872bEp ti14450aEp 24c933Ep 24c934Ep 257999

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