Blue Bird M380 2003, Owner'S Manual

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4-3 – Interior and Exterior Systems Operation – 12kW Generator___________________________M380 Owner’s Manual
4-3-4 Rev. “F”
4-3.6.1.5 Uncontrollable Voltage:
Cause: Defective voltage regulator.
Solution: See 4-3.7 Bypass Regulator
Cause: Incorrect engine adjustment.
Solution: Check engine operation, speed, fuel lines and injector.
4-3.6.1.6 Voltage Spikes Appearing in Sine Waves:
Check Amp Draw at Genset.
Cause: Defective voltage regulator.
Solution: Replace.
Cause: Incorrect engine adjustment, fuel line, or poor fuel.
Solution: Change fuel filter and check engine speed.
Cause: Loose Connections.
Solution: Inspect all connections.
Cause: Bad ground connection.
Solution: Inspect all ground connections.
4-3.7 Bypass Regulator
Inside your control box there is a six-wire plug that plugs into your voltage regulator. To bypass this
regulator for trouble shooting: Unplug from voltage regulator, take the red wire and run to 12 volt
positive, take the white wire run to a good ground, make sure the generator is under
NO LOAD , (flip
circuit breakers off). Start unit up and check voltage, with no regulator your voltage should range
anywhere between 112 volts to 125 volts, if so replace voltage regulator. Adjust voltage higher or
lower with adjustment screw on top regulator.
NOTE: It’s very important that voltage remains within specifications of unit .