Kohler 40COZ/33CFOZ Service Manual page 135

9.3 Generator Set Frequency
Change and Adjustment
9.3.1 Frequency Change
Set the voltage regulator circuit board for either 50 or
60 Hz application. See Figure 9-25. Connect a jumper
between terminals T1 and T2 for 60 Hz operation.
Connect a jumper between terminals T1 and T3 to
convert voltage regulator circuit board to 50 Hz
application.
This procedure changes the voltage regulator circuit
board for the desired frequency. See Frequency
Adjustment for changing generator set frequency and
speed.
1
2
3
1. T2 terminal
2. T1 terminal
3. T3 terminal
Figure 9-25 Jumper Location for 50 or 60 Hz
Operation
TP-5737 5/01
9.3.2
Check the frequency meter for a no-load reading of
63 Hz for 60 Hz operation and 53 Hz for 50 Hz operation
to determine correct frequency operation. Check for 50
and 60 Hz operation at no load if the generator set is
equipped with an isochronous governor. Connect a
frequency meter across V0 and V7 on the control board
terminal strip (generator set must not be running while
making connections) if the controller is not equipped
with a frequency meter. Refer to Figure 9-26.
To adjust governor speed, refer to Section 7,
Component Testing and Adjustment, Governors.
C-255670-D
1. Frequency meter connection points
Figure 9-26 Frequency Meter Connections
Frequency Adjustment
1
Section 9 Wiring Diagrams
A-328917-X
121