Graco ti14838b, ti15034a, ti15036b, ti15035b Check Motor Thermal Switch Unplug thermal

Page 16

Troubleshooting

	TYPE OF PROBLEM	WHAT TO CHECK	HOW TO CHECK

	Sprayer does not run at all	Control is commanding motor to run	6. Perform Field Short Test: Test at large 4-pin motor
		but motor shaft does not rotate.	field connector. There should not be continuity from
	Digital display shows E=05	but motor shaft does not rotate.	field connector. There should not be continuity from
	Digital display shows E=05	Possibly locked rotor condition,	pin 4, the ground wire, and any of the remaining
		Possibly locked rotor condition,	pin 4, the ground wire, and any of the remaining
		an open connection exists between	3 pins. If motor field connector tests fail,
		motor and control, there is a problem	replace motor.
		with motor or control board, or	7. Check Motor Thermal Switch: Unplug thermal
		motor amp draw is excessive.	7. Check Motor Thermal Switch: Unplug thermal
			wires. Set meter to ohms. Meter should read the
	Control board status light blinks		wires. Set meter to ohms. Meter should read the
	Control board status light blinks		proper resistance for each model (see table below).
	5 times repeatedly		proper resistance for each model (see table below).

-

ti13140a
Resistance Table:
695	0 ohms
795	2k ohms
1095	3.9k ohms
1595	6.2k ohms
MARK IV	2k ohms
MARK V 120V	6.2k ohms
MARK V 240V	3.9k ohms

16

3A0157B

Image 16

Contents Electric Airless Sprayers MarkModels Ultra MAX lIlTable of Contents Grounding Extension CordsFire and Explosion Hazard Skin Injection HazardEquipment Misuse Hazard Electric Shock HazardPressurized Aluminum Parts Hazard Moving Parts HazardComponent Identification Pressure Relief Procedure Power Requirements GroundingExtension Cord PailsTroubleshooting Perform Pressure Relief ProcedureWhat to Check What to do Type of Problem Mechanical/Fluid FlowFollow Pressure Relief Procedure on What to Check What to do Type of Problem Type of Problem What to Check HOW to Check ElectricalCheck to see if transducer and control board Step Check Motor Thermal Switch Unplug thermal Is not correct, replace motor Sprayer Will Not Shut Off YESSprayer Will Not Run Step Removal Installation VAC and 110 VAC Motor Control Board33 D 115 VAC Filter Board RemovalPressure Adjust Potentiometer Pressure Control Transducer Install control box 61 and control panel 68 with four screws 3A0157B Disassembly Drive and Bearing Housing ReplacementAssembly Drive and Bearing Housing Replacement Motor Replacement InstallationInstall Motor Shroud RemovalMotor Replacement Displacement Pump Replacement for 695/795/Mark Perform Relieve Pressure ProcedureTi7169a Displacement Pump Replacement 1095/1595/Mark Perform Pressure Relief Procedure,Place u-bolt on pump door protrusion Attach drain hose to sprayer Hose Reel Grease shaft Reed Switch Replacement RemovalInstallation120V Models Wiring DiagramON/OFF 120V Models with 15/20 Amp Switch Thermal Switch Motor Leads Sensor Dip Switch AutoClean Watchdog240V Models Digital Display Potentiometer Pressure Transducer3A0157B Graco Standard Warranty Graco Information