Pressure Relief Procedure | Graco Inc 24C933, 313872B, 257999, 24C934

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.

7.Relieve system pressure. See Pressure Relief Pro- cedure in proportioner manual.

8.Ensure fluid valves are closed then remove fluid manifold.

9.Place the fluid manifold over waste containers, fac- ing away from you.

10.Very slowly open the fluid valves. Under high pres- sure, fluid will spray sideways from the fluid ports.

AB

AC

TI2484a

TI14457a

FIG. 12

3.Disengage piston safety lock. See page 13.

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

TI14456a

FIG. 13

5.Disconnect air quick coupler (AC). See FIG. 12.

6.Engage piston safety lock. See page 13.

22

313872B

Image 22

Graco Inc 24C933, 313872B, 257999, 24C934, 24C932, TI14450a important safety instructions Pressure Relief Procedure

Contents

Important Safety Instructions EP Gun Contents Related Manuals Orifice Flow Area Ratio Chart Models Fixed Orifice Flowrate Data EP Fixed Orifice Flow Data Orifice Diameter Variable Orifice Flowrate DataFlowrate gpm Variable Orifice Flowrate Data 1500 PSI Variable Orifice Flowrate Data 2000 PSI Toxic Fluid or Fumes Hazard Fire and Explosion Hazard Important Two-Component Material Information Changing Materials Red and B Blue Components Grounding Piston Safety LockThroat Seal Liquid Trigger Lock Loss of Air Pressure Hook Support Hook Support 313872B Component Identification Key Cutaway View Gun Triggered Fluid Pouring Theory of OperationGun Detriggered Setup Perform Bleed Throat Seal Liquid Cartridge pro- cedure. See Adjust OrificesOrder to increase the pressure, turn the needle clockwise Follow Pressure Relief Procedure, Optional Hose Position Pressure Relief Procedure Short Term Shutdown Perform Pressure Relief Procedure onShutdown Long Term Shutdown Lubrication MaintenanceSupplied Tool Kit Bleed Throat Seal Liquid Cartridge Clean Outside of Gun Flush Gun Clean Fluid Manifold Clean Breather PlugFollow Pressure Relief Procedure Clean Check Valves Follow Pressure Relief Procedure on Clean Fluid Housing PassagesRemove Front End, see Clean Orifice Replace Mix Chamber and Front Seal Perform Replace Throat Seal Liquid Cartridge, Tools Required RepairReplace Throat Seal Liquid Cartridge Perform Bleed Throat Seal Liquid Cartridge pro- cedure, see Perform Pressure Relief Procedure, Remove Front End Disassemble Front End Assemble Front End Attach Front End See Attach Front End procedurePistons and Bulkhead Access Pistons Bulkhead Shaft Purge Rod Solenoid Valve 26-3.39 Nm. See Component Identification on Troubleshooting Problem Cause Solution Problem Cause Solution Electrical Diagram Parts Model 257999 Shown Orifice, Auto Hand-Held Ring Orifice, Auto Hand-Held See Orifice KitsKits on Orifice 24C751 Orifice Housing 24C756 Ring 24C805 24C815 Kits Kits Located inside back cap Impingement Kit Type and Kit Number Orifice KitsModel Iso Model Polyol Orifice Kit Kit Drill Bit Qty Orifice Size Number Drill Bit KitsKit Illustration Complete O-ring Placement Guide Ref Part Accessories Solvent Flush Pail Kit Solvent Flush Canister Kit248299 5.0 gal liter Pail Technical Data Models without Handle 6.4 lb 2.9 kg Dimensions Ref Dimension, in. mm Technical Data 313872B Graco Standard Warranty Graco Information