Graco Inc 300E, 313314B Check Motor Thermal Switch Unplug thermal, Resistance Table

		Repair / Réparation / Reparación
	WHAT TO CHECK	WHAT TO DO
TYPE OF PROBLEM	If check is OK, go to next check	When check is not OK, refer to this column
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
	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 positive,
	motor and control, there is a problem	replace control board.
	with motor or control board, or	7. Check Motor Thermal Switch: Unplug thermal
	motor amp draw is excessive.
		wires. Set meter to ohms. Meter should read the
Control board status light blinks
	With prime valve open and pressure	proper resistance for each model (see table below).
5 times repeatedly
	relieved, start and stop motor
	15 times using set point
	potentiometer (pressure switch). If
	motor restarts each time at no load,
	motor is bad and must be replaced.
	If motor will not restart every time,
	board is at fault. Replace circuit
	board.	-

ti13140a

Resistance Table:

Ironman 300E	8.2k ohms
695	0 ohms
795	2k ohms
1095	3.9k ohms
1595	6.2k ohms

313314B 37