Instruction/ maintenance manual of the product 257999 Graco Inc.
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Instructions - Parts EP ™ Gun Plural Component, Impingement Mix, Mechanical Purge Pour Gun with Throat Seal Liquid ™ Technology For use with non-flammable foam. Not for use in explosive atmospheres. Model 257999, 24C932, 24C933, 24C934 3000 psi (20.
2 313872B Contents R e l a t e dM a n u a l s ........................... 3 Models ................................... 4 Orifice Flow Area Ratio Chart ............... 4 Fixed Orifice Flowrate Data ................. 5 Variable Orifice Flowrate Data ...
Related Manuals 313872B 3 Related Manuals Manuals are available at www.graco.com. Component manuals in U.S. English: Power-Lock TM Heated Hose Part Description 309572 Instructions - Parts Solvent Flus.
Models 4 313872B Models 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.
Models 313872B 5 Fixed Orifice Flowrate Data EP Fixed Orifice Flow Data 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 500 750 1000 1250 1500 1750 2000 Pressure (psi) Flow (gpm) 0.020 in. Diameter Orifice 0.
Models 6 313872B Variable Orifice Flowrate Data 0.067 0.073 0.086 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 0.020 0.024 0.028 0.031 0.033 0.039 0.041 0.047 0.052 0.055 0.060 0.063 ORIFICE DIAMETER (in.
Models 313872B 7 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 0.020 0.024 0.028 0.031 0.033 0.039 0.041 0.047 0.052 0.055 0.060 0.063 0.067 0.073 0.086 ORIFICE DIAMETER (in.) FLOWRATE (gpm) * To calculate flow in lb/min, multiply gpm rate by 10.
Models 8 313872B 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 0.020 0.024 0.028 0.031 0.033 0.039 0.041 0.047 0.052 0.055 0.060 0.063 0.067 0.073 0.086 ORIFICE DIAMETER (in.) FLOWRATE (gpm) * To calculate flow in lb/min, multiply gpm rate by 10.
Warnings 313872B 9 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.
Warnings 10 313872B 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.
Important Two-Component Material Information 313872B 11 Important Two-Component Material Information Isocyanate Conditions Material Self-ignition Keep Components A and B Separate Moisture Sensitivity of Isocyanates Isocyanates (ISO) are catalysts used in two component foam and polyurea coatings.
Important Two-Component Material Information 12 313872B 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.
Throat Seal Liquid 313872B 13 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.
Loss of Air Pressure 14 313872B 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.
Hook Support 313872B 15.
Component Identification 16 313872B Component Identification See Parts on page 42 for part numbers and further component identification. Key: A Hook Support B Fluid Housing C Orifice D Fluid Manifold .
Component Identification 313872B 17 Cutaway View TI14462a D K E B G R H J H A C.
Theory of Operation 18 313872B 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. Gun Detriggered Purge rod extends, closing the impingement ports and stopping fluid flow.
Setup 313872B 19 Setup Perform this setup procedure to get the pour gun ready for operation. 1. Close fluid valves A and B. 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.
Setup 20 313872B 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.
Setup 313872B 21 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. 1. Follow Pressure Relief Procedure , page 22. 2.
Pressure Relief Procedure 22 313872B 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.
Shutdown 313872B 23 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.
Maintenance 24 313872B Maintenance Supplied Tool Kit See Parts on page 42 for tool illustrations. • Hex Nut Driver; 5/16 • Screwdriver; 1/8 blade • Impingement Port Drill Bit; various sizes depending on port size • 117661 Pin Vise; dual reversible chucks, see F IG .
Maintenance 313872B 25 Flush Gun 1. Follow Pressure Relief Procedure , page 22. 2. Remove fluid manifold (AD). 3. Disconnect signal cable. 4. Install flush hoses to flush manifold 15B817. See F IG . 17. Install flush manifold onto gun. Torque flush manifold bolt to 20-30 in-lb (2.
Maintenance 26 313872B Clean Breather Plug 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). See F IG . 19. Use N-Methylpyr- rolidone (NMP), Dynasolve CU-6, Dzolv, or an equiva- lent to soften cured material.
Maintenance 313872B 27 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.
Maintenance 28 313872B 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.
Maintenance 313872B 29 Clean Orifice 1. Follow Pressure Relief Procedure on page 22. 2. Use 5/16 in. nut driver (supplied) to remove orifices (C). See F IG . 4 on page 16. NOTE: The cap is held in place with reverse threads. 3. Remove cap (26) from orifice (25).
Maintenance 30 313872B 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. 2. Follow Pressure Relief Procedure on page 22. 3. Close Throat Seal Liquid bleed port.
Repair 313872B 31 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) • 9/64 in.
Repair 32 313872B 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. 6. Insert cartridge into gun body. Ensure cartridge tabs are aligned correctly with cartridge tab recesses in gun body.
Repair 313872B 33 Remove Front End 1. Perform Pressure Relief Procedure , page 22. 2. Flush Gun , see page 25. 3. Perform Bleed Throat Seal Liquid Cartridge pro- cedure on page 24 to bleed all fluid from cartridge or replace with empty cartridge. TSL will spill if any fluid remains in cartridge after this step.
Repair 34 313872B Disassemble Front End 1. Remove Front End , see page 33. 2. Remove Throat Seal Liquid bleed port screw (16b). 3. Remove check valve assembly (16a). 4. Remove orifice (25). Repeat for opposite side. 5. Remove pour tip (19). 6. Remove front packing (18) then mix module (17).
Repair 313872B 35 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 IG .3 1 . 5. Install check valve assembly. See Clean Check Valves on page 27 for detailed assembly instruc- tions.
Repair 36 313872B 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.
Repair 313872B 37 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. Purge Rod 1. Flush Gun , page 25. 2. Follow Pressure Relief Procedure , page 22.
Repair 38 313872B 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.
Troubleshooting 313872B 39 Troubleshooting Use the following table to check all possible problems and causes before disassembling gun. See Mainte- nance on page 24 and Repair on page 31 for refer- enced procedures. Follow Pressure Relief Procedure , page 22, before checking or repairing gun.
Troubleshooting 40 313872B Fluid does not shut off when fluid valves are closed Damaged fluid valves Replace Burst of air from muffler when gun is triggered Normal No action required Steady air leakag.
Troubleshooting 313872B 41 Electrical Diagram 5 4 3 2 1 5 4 3 2 1 BRO WN BLUE 31 5 24 1 BLACK #2 BLACK #1 2 5 4 3 2 1 SWITCH SIGNAL 24VDC COMMON SOLENOID ACTIV A TION AIR YE 2 5 3 4 1 1 MALE FEMALE 1 .
Parts 42 313872B Parts 26 25 16 17 18 19 28 16 20 21 22 23 3 2 24 1 29 30 31 32 35 34 37 4 13 5 5 7 9 11 6 8 10 12 14 15 33 54 36 Model 257999 Shown ti14469a 1 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.
Parts 313872B 43 Ref Part Description Quantity 257999, EP Gun, 250, 0.031 in. orifice, Handheld 24C932, EP Gun, 250, 0.031 in. orifice, Auto 24C933, EP Gun, 375, 0.
Parts 44 313872B ▲ Replacement Danger and Warning labels, tags and cards are available at no cost. * Parts included in Kit 24D314. ** Parts included in Kit 24D322. *** Parts included in Kit 24D326. † See Orifice Kits section starting on page 50. ‡ Suggested spares.
Kits 313872B 45 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.
Kits 46 313872B 250 Orifice 24C751 - 24C756, 24C805 - 24C815; see Orifice Kits on page 50 Orifice Housing 1 O-Ring 1 O-Ring 1 O-Ring 1 Needle 1 Backup Ring 1 O-Ring 1 Orifice Cap 1 Cleanout Drill 1 37.
Kits 313872B 47 Iso Check Valve 246731 Check Valve Hous- ing 1 Spring Retaining Screw 1 Carbide Ball 1 Filter 1 Check Valve Spring 1 O-Ring 1 O-Ring 1 Check Valve 246352 Check Valve Hous- ing 1 Spring Retaining Screw 1 Carbide Ball 1 Filter 1 Check Valve Spring 1 O-Ring 1 O-Ring 1 40 Mesh Fil- ter Kit (40 mesh, 0.
Kits 48 313872B Check Valve Face O-Ring Kit 248133 O-Ring 6 250 Fluid Housing Seals 24D313 Housing Outer O-Ring 1 Housing Inner O-Ring 1 Outer Fluid Housing O-Ring Kit 24E611 O-Ring 6 Inner Fluid Hous.
Kits 313872B 49 Piston Safety Stop 24D295 Back Cap 1 O-Ring 1 Piston Stop 1 Safety Stop Shaft 1 O-Ring 1 Spring 1 Stop Shaft O-Ring Kit 257425 O-Ring 6 Handle 24D073 2K Electric Handle 1 Handle Mounti.
Kits 50 313872B Orifice Kits In the following table, shaded rows indicate “Super Stan- dard” items that are typically stocked and provide the best delivery dates.
Kits 313872B 51 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. Kit Number Drill Bit Size Qty in Kit Orifice Size Illustration in.
Kits 52 313872B 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.
Accessories 313872B 53 Accessories Lubricant for Gun Rebuild 248279, 4 oz (113 gram) [10] High adhesion, water resistant, lithium-based lubricant. MSDS sheet available at www.graco.com. Throat Seal Liquid Cartridges See Throat Seal Liquid MSDS, part 307765.
Accessories 54 313872B 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. Solvent Flush Pail Kit 248299 5.0 gal. (19 liter) Pail Includes flush manifold with individual A and B shutoff valves, and air regulator.
Technical Data 313872B 55 Technical Data Maximum Fluid Working Pressure ................ 3000 psi (20.7 MPa, 207 bar) Minimum Air Inlet Pressure ...................... 8 0p s i( 0 . 5 5M P a ,5 . 5b a r ) Maximum Air Inlet Pressure ...................
Technical Data 56 313872B Dimensions Ref Dimension, in. (mm) A 10.8 (274) B 11.7 (297) C 6.1 (155) D 3.1 (79) E 0.73 (19) F 1.06 (27); Mounting: 4x 10-24 Side View Bottom View A C B E D F TI14488a TI1.
Technical Data 313872B 57.
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. This manual contains English. MM 313872 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC.
An important point after buying a device Graco Inc. 257999 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco Inc. 257999 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco Inc. 257999 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 257999 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 257999 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 257999, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco Inc. 257999.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 257999. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 257999 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
