Multiquip operation manual GA-6HZ-TROUBLESHOOTING Generator

GA-6HZ—TROUBLESHOOTING (GENERATOR)

Practically all generator breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take a remedial action following the

diagnosis based on the Generator Troubleshooting (Table 5) information shown below and on the preceding page. If the problem cannot be remedied, please leave the unit just as it is and consult our company's business office or service plant.

TABLE 5. GENERATOR TROUBLESHOOTING

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
Low voltage	Engine speed too low?	Raise engine speed to rated RPM.
	AC voltmeter not working?	Replace AC voltmeter.
	Control box internal wiring	Check control box wiring.
	malfunction?
	Defective ignition coil?	Check red and green ignition wires. Replace ignition wires if
Low voltage. Engine speed		necessary.
normal 3650 RPM (unloaded),
	Rotor winding malfunction?	Check or replace rotor.
2500 RPM (idle)
	Stator winding malfunction?	Check or replace stator.
	Leakage breaker malfunction?	Check or replace CB1.
	Full power switch malfunction?	Check full power switch and full power switch circuit.
Voltage output too high.	Engine speed too high?	Lower engine speed to rated RPM.
Voltage output too high. Engine	Control box internal wiring	Check control box wiring.
speed normal 3650 RPM	malfunction
(unloaded), 2500 RPM (idle)
Circuit breaker will not turn on	Defective circuit breaker?	Replace circuit breaker.
"NO LOAD"
Circuit breaker will turn on	Overload?	Reduce load or replace breaker.
"LOADED" but trips immediately.	Load circuit is shorted?	Check load circuit for short.
Does not accelerate from low to	Stuck solenoid?	Check solenoid.
high "NO LOAD"	Bad Idle control switch?	Check or replace idle control switch.
	Idle control switch malfunction?	Check or replace idle control switch.
Does not accelerate from low to
	Idle control device malfunction?	Check or replace idle control device.
high "LOAD ACTIVE"
	Control box interal wiring	Check control box wiring.
	defective?

PAGE 22 — GA-6HZ A.C. GENERATOR — PARTS & OPERATION MANUAL — REV. #4 (10/08/04)