Whisper Power M-SC6 User Manual page 28

TROUBLE SHOOTING
PROBLEM
than 210V/105V)).
Generator output voltage too
low under load (less than
210V/105V).
In no load condition it is ok
Generator voltage too high,
(more than 245V/130V)
Generator voltage fluctuates.
Generator is not able to start an
electric motor
28
CAUSE
• Defective capacitor.
• Defective diode (one of the two)
• Generator is overloaded.
• Engine is not reaching the rated RPM.
• Defective capacitor
• Defective voltage regulator (Optional
for M-SC8/10)
• Engine is running too fast (RPM too
high).
• Over-energising
due
capacitors
• Presence of a strong capacitive load
(leading power factor)
• Defective voltage regulator (Optional
for M-SC8/10)
• Disturbances on the electrical system/
user side.
• Engine runs irregularly.
If the generator is unable to supply
enough power to start an AC electric
motor, this is usually because this motor
draws too much current during starting
SOLUTION
Check capacitor and replace if necessary
(refer to special procedures).
Check the diodes in the rotor and replace
(refer to special procedures).
Switch off a load; (part off) consumers.
Refer to engine RPM problems
Check capacitor and replace if necessary
(refer to special procedures).
Replace voltage regulator
Check engine speed and adjust (refer to
special procedures).
Check capacitor specification and replace
to defective
capacitors if necessary.
Compensate for this capacity and seek for
experts advice (WHISPERPOWER customers
service)
Replace voltage regulator
Check if electrical load is fluctuating
When engine runs irregularly refer to section:
"Engine runs irregularly".
Check the electric motor's current draw
required for starting. This should not exceed
the rated generator peak output current. This
could be remedied by providing stronger
capacitors to the motor or using a "soft-start".
Inquire at your nearest WhisperPower dealer
or directly at the manufacturer, WhisperPower
in the Netherlands.
December 2010 / M-SC6/8/10 / EN