Westerbeke 8.0KW-60Hz Service Manual page 65

,
COLISEUM GENERATOR
EXCITATION OF THE GENERATOR TO
DETERMINE FAULT .
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 12 DC+ to the F+ lead
4. Connect the 12 DC- to the F-lead.
5. Leave the 12VDC connected for 5 minutes.
Disconnect and reconnect F + and F-Ieads 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.
NOTE:
Steps 1 thru 4 are performed when flashing the exciter
field
(stator) to determine the cause of afault in the
generator.
SlIlp 5: Start the generator
and
observelnote the reaction of .
the generator while applying 12VDC to the exciter stator.
Record the AC voltage ouJput/generator.
SIIlp
6: SUJp the generator.
and
remove the 12VDC leadfrom
F
+
and
F-
and
reconnect it to the regulator board.
VOLTAGE REGULATOR
Nortna! DC voltage to exciter stator winding generator at
no load.
F+ F--+8·9VDC
Norma! AC input voltage to regulator. 120 VAC - 60Hz
,...", -+......,..
230 VAC - 50Hz
a
"'"'~·ff-·-,
TO PHASE OR LINE
o
~
VOLTAGE (90-130 VAC)
L --"rf.l-.~+---;
TO EXC/TER
STATOR
VOLTAGE
~II
HI---,
OPEN IS 60Hz
I-'H--'
'SHORT/550Hz
o
o
~ WESTERBEKE
Engines & Generators
. 57