Westerbeke 9.0 BCG Technical Manual page 201

No-Load Voltage Adjustment
Voltage adjustment is made with the generator regulation being governed by the compound transformer.
1. The selector switch must be in the COMP position.
2. Operate the generator and apply a moderate load momentarily and remove it. Note the voltage output
from the generator's 120 volt leg(s) (110 volt 50 hertz). The no-load voltage should be between 121 - 124
volts at 61.5 - 62 hertz (111 - 113 volts at 51.5 - 52 hertz).
NOTE: The no-load voltage should be adjusted to the voltage produced by the generator once
started and a momentary load applied to excite the transformer and then removed. The volt-
age produced by the generator after this momentary load is removed is no-load voltage.
3. To raise or lower the voltage, shims of varying thickness (non-conductive material) are placed or removed
from under the steel laminated bar on top of the compound transformer. The material used for shimming
should not soften at temperatures in the 176" F (80
0
C) range. A small reduction in no-load voltage (1 to
3 volts) can sometimes be accomplished by gently tapping the top of the laminated steel bar to reduce
the air gap between the existing shims and the transformer core.
Regulator
Plug
RecsIWhole
RecsIWhole
195
VOltage Adjustment
Shim Location
1 1 : - _ - Optional
Regulator
Plug
Blue &
While~Blue&
White
:Vellow & Black
Green & White Red & White
Yellow
&
White Black
&
White
VOltage
Regulator
Westerbeke Generators