ParkFlushing, Open Close | Graco A-25 guide

Park

ParkFlushing

Park the pumps at the end of the day to cycle compo- nent A pump to home position, submerging displace- ment rod.

1. Open the park valve.

Open

Close

Flush equipment only in a well-ventilated area. Do not spray flammable fluids. Do not turn on heaters while flushing with flammable solvents.

•Flush out old fluid with new fluid, or flush out old fluid with a compatible solvent, such as toluene, naptha, or mineral spirits before introducing new fluid.

•Use lowest possible pressure when flushing.

•To flush feed hoses, pumps, and the heater sepa- rately from the heated hoses, set PRESSURE RELIEF/SPRAY valves (SA, SB) to PRESSURE RELIEF/CIRCULATION. Flush through bleed lines

(N).

2.Trigger the gun until pumps stops at the bottom and relieves pressure.

3.Close the air motor shutoff valve.

4.Close the park valve.

N

SA

SB

N

ti8441a

•To flush entire system, circulate through gun fluid manifold (with manifold removed from gun).

•Always leave hydraulic oil or a non-water based, non-water absorbent fluid in system. Do not use

water.

Only use flush solvents that are compatible with Fluoroelastomer seals. Non-compatible solvents will damage seals and cause hazardous conditions, such as high pressure leaks and pressure switch failure.

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3A1570A

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Graco A-25 important safety instructions ParkFlushing, Open Close

Contents

Important Safety Instructions Repair-Parts Contents Related Manuals Proportioner ModelsSystems Manual Description Electric Shock Hazard Fire and Explosion Hazard Equipment Misuse Hazard Important Two-Component Material Information Changing Materials Symbol Code Code Name Diagnosis Cause DataTrak Diagnostic CodesTemperature Control Diagnostic Codes Sensor Connector Continuity Checks Pins Description Reading E01 High fluid temperatureCauses of E01 Errors Checks E02 High zone current E03 No zone current E99 Loss of communication E05 Control board over temperatureE06 Communication cable unplugged Pressure Relief ProcedureShutdown Before Beginning Repair ParkFlushing Open Close Power TroubleshootingProblems Pumps and Pressures Problem Cause Solution Problem Cause Solution Electronics Problem Cause Solution Sor FTS or thermocouple discon See E04 Fluid Temperature SenHeater Hose Heat System Problem Cause Solution Disconnect Pump Follow Pressure Relief Procedure,Repair Connect Pump Install Air Motor Remove Air Motor Air Inlet Filter / Water Separator Auto Drain Air Filter Element InstallationRecirculation / Over Pressure Relief Block Air Filter Element Removal Connector Description Temperature Control ModuleTemperature Control Module Connections Bottom of Power Modules Replacing Temperature Control Assembly Modules Test SCR Circuit Line Voltage Primary HeaterHeater Element KW Dual Zone Heater Thermocouple Thermocouple Pins Result Overtemperature SwitchCheck Hose Connectors Heated Hose Test/Removal Fluid Temperature Sensor FTSInstallation Model Secondary Voltage Transformer Primary CheckTransformer Secondary Check Replace Transformer Replace Circuit Breaker Module Size Component Pump Lubrication System Pump Lubrication System Fluid Inlet Strainer Screen Temperature DisplayRefer to Reactor A-25 Wiring Schematic, Detail of Membrane Switches and Temperature Display Board Display Module Replace Fuse Replace DataTrak Battery or FuseReplace Battery Accessories Recommended Spare Parts Parts 7984 100 888 Torque pump locking nuts to 66-74 ft-lbs 90-100 Nm Part Description Qty Cart Nipple Control Panel Screw Ref. Part Description Qty Temperature ControlWheel Kit Fluid Manifold Fluid Inlet Kit Kw Dual Zone Heater, 24J788 Ring Air Motor Pump Assembly PLUG, Pipe Color Diameter Air Tubing ConnectionsLength Connection Outside Ft m From Breaker Module Reactor A-25 Wiring Schematic Phase POD Reactor A-25 Wiring Schematic Simplified Schematic, Heater Controls Technical Data Category Data Graco Standard Warranty Graco Information