Westerbeke WPDS-20 Technical Manual page 98

I
TABLE D. AC Output Voltage Yes
I
Builds UP. But Field
Breaker Trips
1.
Does AC output voltage
build up to 140% or more
of rated voltage before
Field Breaker trips? 2
2. Are there any loose or
broken wires or con-
nections on VR22?
-
3. Is diode CR15 on VR21 OK? 4
4. Are T21 windings and
connections OK? 5
5. Are generator stator
leads properly connected?
Refer to Figure 6. 6
6. Replace VR21. -
7. Are diodes CR1. CR2, CR3,
CR4, CR5, CR6 in rotating
rectifier assemblies OK?
8
Check all diodes - more
than one may be
defective.
8. Is brush less exciter
stator winding OK? 9
9. Is generator rotor field
winding OK?
10
10. Is brushless exciter rotor
OK7
11
11. Are generator stator
windings OK? 6
No Test
Proc.
7 -
3
-
G
-
J
-
-
-
P
- F
-
K
- M
- L
-
N
ADJUSTMENTS AND TESTS - REFERENCE LIST,
pages
8-15.
A. VOLTAGE CALIBRATION ADJUSTMENT
B. VOLTAGE STABILITY ADJUSTMENT
C. BATTERY CHARGE RATE ADJUSTMENT
D. VOLTAGE REGULATOR CHECKOUT
E. FLASHING THE FIELD
F. TESTING ROTATING RECTIFIERS
G. TESTING OUTPUT BRIDGE DIODES
H. TESTING SCR'S
I. TESTING REACTOR
J. TESTING REFERENCE TRANSFORMER
K. TESTING EXCITER STATOR
L. TESTING BRUSHLESS EXCITER ROTOR
(ARMATURE)
M. TESTING GENERATOR ROTOR
N. TESTING GENERATOR STATOR
O. WIRING HARNESS CHECK
P. VR21 REPLACEMENT
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