Graco Inc 24C934 Adjust Orifices, Perform Bleed Throat Seal Liquid Cartridge pro- cedure. See

Page 20

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.

TI14458a1

FIG. 8

15.Disengage piston safety lock. See page 13.

16.Perform a test pour into a waste container. Adjust pressure and temperature to get desired results, see proportioner manual. Also, see Adjust Ori- fices.

Adjust Orifices

In order to balance pressures between the A component and B component the needle in each orifice may need to be adjusted. Be sure that all necessary adjustments to the proportioner are made prior to adjusting the orifices, see proportioner manual.

If after adjusting pressures neither orifice can achieve the desired pressure both orifices should be replaced with a larger or smaller size. Note that a smaller orifice will provide higher pressure and a larger orifice will pro- vide lower pressure.

If after attempting to balance pressures the pressure dif- ference is over 500 psi one orifice should be replaced with a different size. If that is the case, adjust the needle in each orifice all the way open (counter-clockwise) and observe the pressures. The orifice whose pressure is farthest from the desired pressure should be replaced. Note that a smaller orifice will provide higher pressure and a larger orifice will provide lower pressure.

1.Insert a 5/64 in. hex key (supplied) into the opening in the hex on the orifice.

2.In order to increase the pressure, turn the needle clockwise.

TI15102a

In order to decrease the pressure, turn the needle counter-clockwise.

TI14455a

FIG. 9

TI15104a

20

313872B

Image 20

Contents Important Safety Instructions EP GunContents Related Manuals Orifice Flow Area Ratio Chart ModelsFixed Orifice Flowrate Data EP Fixed Orifice Flow DataFlowrate gpm Variable Orifice Flowrate DataOrifice Diameter 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 ComponentsPiston Safety Lock Throat Seal LiquidGrounding Trigger LockLoss of Air Pressure Hook SupportHook Support 313872B Component Identification KeyCutaway View Gun Detriggered Theory of OperationGun Triggered Fluid Pouring Setup Order to increase the pressure, turn the needle clockwise Adjust OrificesPerform Bleed Throat Seal Liquid Cartridge pro- cedure. See Follow Pressure Relief Procedure, Optional Hose PositionPressure Relief Procedure Perform Pressure Relief Procedure on ShutdownShort Term Shutdown Long Term ShutdownMaintenance Supplied Tool KitLubrication Bleed Throat Seal Liquid CartridgeClean Outside of Gun Flush GunFollow Pressure Relief Procedure Clean Breather PlugClean Fluid Manifold Clean Check Valves Remove Front End, see Clean Fluid Housing PassagesFollow Pressure Relief Procedure on Clean Orifice Replace Mix Chamber and Front Seal Perform Replace Throat Seal Liquid Cartridge,Replace Throat Seal Liquid Cartridge RepairTools Required Perform Bleed Throat Seal Liquid Cartridge pro- cedure, see Perform Pressure Relief Procedure, Remove Front EndDisassemble Front End Assemble Front EndPistons and Bulkhead See Attach Front End procedureAttach Front End Access Pistons Bulkhead Shaft Purge Rod Solenoid Valve 26-3.39 Nm. See Component Identification onTroubleshooting Problem Cause SolutionProblem Cause Solution Electrical Diagram Parts Model 257999 ShownOrifice, Auto Hand-Held RingOrifice, Auto Hand-Held Kits on KitsSee Orifice Orifice 24C751 Orifice Housing 24C756 Ring 24C805 24C815 Kits Kits Located inside back cap Model Iso Model Polyol Orifice Kit Orifice KitsImpingement Kit Type and Kit Number Kit Illustration Drill Bit KitsKit Drill Bit Qty Orifice Size Number Complete O-ring Placement Guide Ref PartAccessories 248299 5.0 gal liter Pail Solvent Flush Canister KitSolvent Flush Pail Kit Technical Data Models without Handle 6.4 lb 2.9 kgDimensions Ref Dimension, in. mmTechnical Data 313872B Graco Standard Warranty Graco Information