Graco A-25 important safety instructions Repair, Disconnect Pump, Follow Pressure Relief Procedure

Page 22

Repair

Repair

Unless otherwise noted, all repair procedures must be completed with incoming power switched OFF and locked out at the source. Any electrical repair or troubleshooting required beyond the scope of this manual must be performed by a qualified electrician. Shut off air inlet ball valve and shut off all air supply pressure.

Disconnect Pump

Air motor shaft, yoke, pump rod and connecting rod move during operation. Moving parts can cause

6.Shut off inlet air ball valve (G)

7.Remove screws (13, 15) and pump covers (63).

13

63

63

15

13

ti17989a

15

8.Disconnect A side (21) and B side (23) steel outlet tubes from adapters (312).

serious injury such as pinching or amputation. Keep hands and fingers away from connecting rod during operation.

NOTE: See manual 309577 for pump repair instructions.

1. Turn main heater power OFF

.

2.	Follow Flushing, page 14.
3.	Follow Pressure Relief Procedure, page 13.

23

312

M

318

M

31221

4.	Follow Park instructions, page 14.
5.	Shut off both feed pumps and close both inlet supply
	valves (F).

		F
G	F	ti17988a
	F	ti17988a

324

317

ti17990a

9.Remove adapter (312) from fluid outlet (M).

10.For A Side pump, disconnect barb fitting (318), elbow fitting (317), and two pipe plugs (324).

NOTE: It is not necessary to cut tubes connected to barb fittings.

22

3A1570A

Image 22

Contents Important Safety Instructions Repair-PartsContents Related Manuals Proportioner ModelsSystems Manual DescriptionElectric Shock Hazard Fire and Explosion Hazard Equipment Misuse Hazard Important Two-Component Material Information Changing Materials Temperature Control Diagnostic Codes DataTrak Diagnostic CodesSymbol Code Code Name Diagnosis Cause Sensor Connector Continuity Checks Pins Description Reading E01 High fluid temperatureCauses of E01 Errors ChecksE02 High zone current E03 No zone currentE06 Communication cable unplugged E05 Control board over temperatureE99 Loss of communication Pressure Relief ProcedureShutdown Before Beginning RepairParkFlushing Open ClosePower TroubleshootingProblems Pumps and PressuresProblem Cause Solution Problem Cause Solution ElectronicsProblem Cause Solution Heater See E04 Fluid Temperature SenSor FTS or thermocouple discon Hose Heat System Problem Cause Solution Repair Follow Pressure Relief Procedure,Disconnect Pump Connect Pump Install Air Motor Remove Air MotorAir Inlet Filter / Water Separator Auto Drain Air Filter Element InstallationRecirculation / Over Pressure Relief Block Air Filter Element RemovalConnector Description Temperature Control ModuleTemperature Control Module Connections Bottom of Power ModulesReplacing Temperature Control Assembly Modules Test SCR CircuitHeater Element Primary HeaterLine Voltage KW Dual Zone Heater Thermocouple ThermocouplePins Result Overtemperature SwitchCheck Hose Connectors Heated HoseInstallation Fluid Temperature Sensor FTSTest/Removal Transformer Secondary Check Replace Transformer Transformer Primary CheckModel Secondary Voltage Replace Circuit Breaker Module Size ComponentPump Lubrication System Pump Lubrication SystemRefer to Reactor A-25 Wiring Schematic, Temperature DisplayFluid Inlet Strainer Screen Detail of Membrane Switches and Temperature Display Board Display ModuleReplace Battery Replace DataTrak Battery or FuseReplace Fuse Accessories Recommended Spare PartsParts 7984 100 888Torque pump locking nuts to 66-74 ft-lbs 90-100 Nm Part Description Qty CartNipple Control Panel ScrewWheel Kit Temperature ControlRef. Part Description Qty Fluid Manifold Fluid Inlet KitKw Dual Zone Heater, 24J788 RingAir Motor Pump Assembly PLUG, PipeLength Connection Outside Ft m From Air Tubing ConnectionsColor Diameter Breaker Module Reactor A-25 Wiring Schematic PhasePOD Reactor A-25 Wiring Schematic Simplified Schematic, Heater Controls Technical Data Category DataGraco Standard Warranty Graco Information

Related manuals

Manual 38 pages 32.05 Kb