Repair, Disconnect Pump | Graco A-25 specification

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

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

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 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 Checks E02 High zone current E03 No zone current E06 Communication cable unplugged E05 Control board over temperatureE99 Loss of communication Pressure Relief ProcedureShutdown Before Beginning Repair ParkFlushing Open Close Power TroubleshootingProblems Pumps and Pressures Problem Cause Solution Problem Cause Solution Electronics Problem 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 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 Heater Element Primary HeaterLine Voltage KW Dual Zone Heater Thermocouple Thermocouple Pins Result Overtemperature SwitchCheck Hose Connectors Heated Hose Installation Fluid Temperature Sensor FTSTest/Removal Transformer Secondary Check Replace Transformer Transformer Primary CheckModel Secondary Voltage Replace Circuit Breaker Module Size Component Pump Lubrication System Pump Lubrication System Refer to Reactor A-25 Wiring Schematic, Temperature DisplayFluid Inlet Strainer Screen Detail of Membrane Switches and Temperature Display Board Display Module Replace Battery Replace DataTrak Battery or FuseReplace Fuse 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 Wheel Kit Temperature ControlRef. Part Description Qty Fluid Manifold Fluid Inlet Kit Kw Dual Zone Heater, 24J788 Ring Air Motor Pump Assembly PLUG, Pipe Length Connection Outside Ft m From Air Tubing ConnectionsColor Diameter 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