Graco 395/490/495/595 Sprayer Will Not Shut Off, Troubleshooting Procedure

Page 40

Troubleshooting

Sprayer Will Not Shut Off

1.Perform Pressure Relief Procedure, page 13. Leave prime valve open (down) and turn ON/OFF switch OFF.

2.Remove control box cover so the control board status light can be viewed if available.

Troubleshooting Procedure

Troubleshooting Procedure

Plumb pressure gauge into paint hose, plug sprayer in, and turn power switch ON. Does sprayer reach or exceed

its maximum pressure?

YES

Is the control board status light on?

YES

			Mechanical problem:
			See the proper fluid pump
NO			See the proper fluid pump
NO			manual for the sprayer for
			further troubleshooting procedures.

			Replace the control board.
NO
NO

Unplug the transducer from control board.

Does motor stop running?

YES

Bad transducer.

Replace and test with a new one.

			Replace the control board.
NO
NO

ti24731a

40

334530A

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Contents Related Manuals Contractor/FTxSG3 334599Contents Models Hi-BoyStand Lo-Boy ModelGrounding Extension CordsFire and Explosion Hazard Equipment Misuse Hazard Personal Protective Equipment Component Identification Stand ModelsLo-Boy Models Hi-Boy Models Hi-Boy Models Power Requirements GroundingExtension Cords PailsPressure Relief Procedure Trigger Lock Setup 334530ATi24638a Make certain ON/OFF switch is OFF Setup Perform Pressure Relief Procedure Startup20 s Spray Tip Installation Perform Pressure Relief Procedure,Operation SprayClear Tip Clog Digital Display Pressure Display Perform Pressure Relief Procedure,Stored Data Display Ti2824a Cleanup Fast Flush Drain TubeFast Flush Hose and Gun To flush drain tube and pump turn prime valve downIf flushing with water, flush again with Maintenance Activity IntervalMechanical/Fluid Flow TroubleshootingRefer to this column Properly installed to allow full Possible during priming Perform Pressure Relief Procedure, Error Code MessagesElectrical Problem What to Check How to check System see Pressure ReliefDisplays Code 03 message Step Ohms Motor thermal device When cool, correct cause Sprayer Will Not Run Sprayer Will Not RunOhms Troubleshooting Procedure Sprayer Will Not Shut Off395/490/495 Stand Sprayers See132 Ref. Part Description 395/490/495 Stand Sprayers Parts ListQty 395/490/495/595 Lo-Boy Sprayers 117 132 395/490/495/595 Lo-Boy Sprayers Parts List 395/490/495/595 Hi-Boy Sprayers 117 395/490/495/595 Hi-Boy Sprayers Parts List Ref. PartAccessories and Labels Alert Control Box Control Box Parts List GrommetControl Box Wiring Diagrams 120V, US/Japan110V, UK Technical Specifications 395/490/495/595Noise** dBa @ 70 psi 0.48 MPa, 4.8 bar Graco Standard Warranty For Graco Canada CustomersGraco Information International Offices Belgium, China, Japan, Korea