Westerbeke 8.0KW-60Hz Service Manual page 66

COLISEUM GENERATOR
RESTORING RESIDUAL MAGNETISM TO
THE GENERATOR
The initial excitation of the generator is assured by the
pennanent magnet built in one of the exciter stator poles.
Trouble with the initial excitation can occur after prolonged
storage or after a service repair that dismantles the exciter. In
some rare instances, it may be the result of rough transport or
. handling. To restore the residual magnetism necessary to
begin the voltage build-up, excite the generator with 40 -
60VDC by following the procedure below:
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r::Jl
VOLTAGE
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TO PHASE OR LINE
~-.-II---,I VOLTAGE (90-130 VAC)
11:f-W--tt·--~
TO EXCITER
STATOR
1. Disconnect the F+ lead from the voltage regulator.
2. Disconnect the F-lead from the voltage regulator.
NOTE: Be sure to maintain DC polarity.
3. Connect the 40 - 6OVDC+ to the F + lead
RHEOSTAT
ADJUSTMENT
II
~-jl~-·-,
OPEN IS 60Hz
SHORT IS 50Hz
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4. Connect the 40 - 60VDC- to the F- lead.
5. Leave connected for 2 -3 seconds.
Disconnect and reconnect F + and F- leads to the
regulator.
6. Start the generator and observe the voltage build-up.
If the voltage build-up does not occur, repeat steps 1
thru 5.
A
CAUTION:
Damage to the voltage regulator will
occur If he regulator Is not disconnected from the
exciter field during flashing.
~ WESTERBEKE
Engines
&
Generators
58
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