Adjustment Procedure - Kohler 10CCOZ61 Service Manual

1 2
STAB
V/HZ VOLTS
NOTE
The voltage regulator is located in the generator junction
box and is serviceable by removing four screws.
1. Voltage Adjustment Pot. - Adjusts generator output
within range of 190--270 Volts (line-to-line).
2. Stability Pot. - " Fine-tunes"regulator to reduce light
flicker.
3. Volts/Hz Pot. - Adjustment determines engine speed
(Hz) at which generator output voltage will begin to drop.
Figure 7-6. PowerBoostä V Adjustments
Hazardous voltage can cause severe injury or
death. Short circuits can cause bodily injury and/or
equipment damage.
connections with tools or jewelry while adjustments are
made. Remove wristwatch, rings, and jewelry that can
cause short circuits.
Hazardous voltage can cause severe injury or
death. The heat sink of the voltage regulator contains
high voltage. Do not touch voltage regulator heat sink
when testing or electrical shock will occur.
7-8 Component Testing and Adjustment
3
Do not contact electrical

Adjustment Procedure

1. Turn Voltage, Volts/Hz, and Stability pots. fully
counterclockwise. Connect voltmeter to AC circuit
or an electrical outlet.
2. Start generator set. Rotate Voltage Adjustment
pot. clockwise
counterclockwise (decrease voltage) until desired
output voltage is achieved.
3. Rotate Stability pot. clockwise until minimum
light flicker is obtained.
4. Readjust Voltage
necessary).
5. Mechanical Governor:
Adjust engine speed to desired cut-in frequency
(factory setting 57.5--58 Hz for 60 Hz models or
47.5--48 Hz for 50 Hz models) as measured on
frequency meter. See Section 3. Governor.
6. Rotate Volts/Hz Adjustment pot. clockwise until
voltage level begins to drop (as measured on
voltmeter). When set to these specifications, the
generator will attempt to maintain normal output
until engine speed drops below the frequency set
in step 5 (as load is applied).
7. Mechanical Governor:
Readjust engine speed to normal (63 Hz/1890
rpm for 60 Hz or 52.5 Hz/1575 rpm for 50 Hz). See
Section 3. Governor.
8. Readjust Voltage
necessary).
9. Readjust Stability pot. (if necessary).
10. STOP GENERATOR SET.
(increase voltage)
Adjustment pot.
Adjustment pot.
TP-5648 8/93
or
(if
(if