4.2.4 Voltmeter
Check: Connect electric supply , which voltage range is the same as voltmeter, to
the terminal post of voltmeter. The voltmeter should indicate normal voltage.
Service: Fault phenomena is that there is AC current output during generating set
running, but no AC voltage indication.-----------The voltmeter is open-circuit, the
wring of voltmeter is loosened.
Cause: 1. Wring is loosened due to vibration. 2. The element in voltmeter is
damaged. 3. The pointer of voltmeter is seized.
Remedy: 1. Checkout the resistance on voltmeter terminal posts with a
multimeter for on-off relation. On is normal. Off is faulty. 2. Replace voltmeter.
Cause: 1. The generator does not generate power.
Remedy: According the troubleshooting for generator.
4.2.5 Air switch
Check: Checkout the resistance at two ends of air switch with a multimeter. The
resistance should be infinity in OFF and zero in ON.
Service 1: The fault phenomena is that there is AC current output during
generating set running, but no AC voltage indication.-----The voltmeter is open-
circuit, the wring of voltmeter is loosened.
Cause: 1. Wring is loosened due to vibration. 2. The element in voltmeter is
damaged. 3. The pointer of voltmeter is seized.
Remedy: 1. Checkout the resistance on voltmeter terminal posts with a
multimeter for on-off relation. ON is normal. OFF is faulty. 2. Replace voltmeter.
4.2.6 PCB parts for engine oil alarming and stopping
Check: Checkout the contact and circuit of relay on PCB with a multimeter for
correct on-off.
Service 1: The fault phenomena is low oil pressure indication alarming.-----The
indicating lamp on PCB always on.
Cause: 1. The engine oil filter is dirty, result in false alarm of engine oil. 2. The
relay on PCB is defective.
Remedy: 1. Checkout the resistance of two harnesses at the terminal post of
alarming apparatus for on-off relation. Off is normal. On is faulty. 2. Replace
PCB. 3. Replace relay, or 4.Replace engine oil alarming apparatus.
Service 2: The fault phenomena is automatic stopping during generating set
running.----------The relay on PCB is damaged.
Remedy: 1. Checkout the resistance of two harnesses at the terminal post of
alarming apparatus for on-off relation. Off is normal. On is faulty. 2. Replace
PCB. 3. Replace relay, or 4.Replace engine oil alarming apparatus.
Plug
Screw M6x12
AC receptacle
Fuse base
Electric switch lock
Intelligent display
Grounding
nut
Air switch
Receptacle
Plastic Veneer
Panel
Honda receptacle
Gauge panel Three-phase generating set
Gauge panel Three-phase generating set
Plug
Boat switch
Electric switch lock
DC receptacle
Fuse base
Air switch
Grounding nut
Screw
Plastic veneer
Panel
Grounding bolt
Air switch
Receptacle
Nut
Intellgent display
Electric switch lock
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