Multiquip manual LS600 PUMP — TROUBLESHOOTING ELECTRICAL, ELECTRICAL TROUBLESHOOTING continued

LS600 PUMP — TROUBLESHOOTING (ELECTRICAL)

TABLE 12. ELECTRICAL TROUBLESHOOTING (continued)

MALFUNCTION
READING	PROBABLE CAUSE	SOLUTION
(Screen 1)
	Burnt 12 V cycling solenoid.	Measure solenoid coil resistance. It should
		read 6 ohms. Replace burnt solenoid.
THROTTLE SOLENOID
OPEN
	Wire connection broken.	Replace broken wire.
	The 12-volt cycling solenoid is shorted	Measure solenoid coil resistance. It should
THROTTLE SOLENOID	directly to ground.	read 6 ohms. Replace shorted solenoid.
SHORTED	Wire connection is shorted directly to the
		Correct connection.
	ground.
	Burnt 12 V cycling solenoid.	Measure solenoid coil resistance. It should
		read 6 ohms. Replace burnt solenoid.
FUEL SOLENOID OPEN
	Wire connection broken.	Replace broken wire.
	The 12-volt cycling solenoid is shorted	Measure solenoid coil resistance. It should
FUEL SOLENOID	directly to ground.	read 6 ohms. Replace shorted solenoid.
SHORTED	Wire connection is shorted directly to the
		Correct connection.
	ground.
	Burnt 12 V cycling solenoid.	Measure solenoid coil resistance. It should
		read 6 ohms. Replace burnt solenoid.
UNLOADER SOLENOID
OPEN
	Wire connection broken.	Replace broken wire.
	The 12-volt cycling solenoid is shorted	Measure solenoid coil resistance. It should
UNLOADER SOLENOID	directly to ground.	read 6 ohms. Replace shorted solenoid.
SHORTED	Wire connection is shorted directly to the
		Correct connection.
	ground.
ALTERNATOR FAILURE	Defective alternator.	Replace alternator.
V-BELT BREAKAGE	Engine blower cooling fan V-belt is broken	Replace v-belt.
	requiring replacement.

PAGE 68 — MAYCO LS600 PUMP — OPERATION AND PARTS MANUAL — REV. #4 (9/15/11)