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IO. TROUBLESHOOTING
1 O-1 No AC output
l
Checking the
exciting coil
for resistance. (RGV12000) (Refer to 8-3.)
If insulation is NG, replace exciting coil with new one.
* Checking the
brush
and
slip ring
of rotor for resistance. (Refer to 8-3.)
If insulation is NG, replace brush and slip ring with new one.
*
Check
stator
for winding resistance between terminals. (Refer to 9-4.)
If stator is faulty, replace with new one.
* Checking
stator
for insulation resistance.
(Refer to 8-3.)
If insulation is NG, replace stator with new one.
* Checking the
A.V.R .
(RGV12000) (Refer to 9-7.)
If insulation is NG, replace A.V.R with new one. ’
* Checking-the
diode unit
and
C.T
. (RGV13000T) (Refer to 9-8 and 9-l 1.)
i
If insulation is NG, replace diode unit and C.T with new one.
10-2 AC Voltage is too high or too low
*
Check
engine speed.
Nominal engine speed at no load ; 3,100 to 3,150 rpm
If engine speed is too high or too low, adjust to the rated rpm.
l
Check
stator
for winding resistance and insulation.
(Refer to 9-4 and 8-3.)
l
Check
rotor
for resistance and insulation.
(Refer to 9-5 and 8-3.)
* Checking the
idle control unit.
(RGV12000)
(Refer to 9-l 0.)
If insulation is NG, replace idle control unit with new one.
IO-3 AC voltage is nominal at no-load, but load cannot be applied.
*
Check
engine speed.
If engine speed is low, adjust to the rated rpm.
*
Check
total wattage of appliances
connected to generator.
If the generator is overloaded, reduce the load to the rated output of generator.
l
Check
appliance
for trouble.
If the appliance is faulty, replace it.
*
Check if
engine
is
overheated.
If generator cooling air inlet and/or outlet is clogged with dirt, grass, chaff or other debris,
remove it.
*
Check
insulation
of
generator.
(Refer to 8-3.)
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