Section 7 Generator Troubleshooting; General; General Troubleshooting - Kohler 32EOZ Service Manual

7.1 General

Before beginning the troubleshooting procedures, read
all the safety precautions at the beginning of this
manual. The following tests include additional safety
precautions; OBSERVE THESE PRECAUTIONS!
WARNING
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity is present.
breakers of all power sources before servicing the equipment.
Configure the installation to electrically ground the generator
set, transfer switch, and related equipment and electrical
circuits to comply with applicable codes and standards. Never
contact electrical leads or appliances when standing in water
or on wet ground because these conditions increase the risk of
electrocution.
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage.
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
TP-5936 7/04

Section 7 Generator Troubleshooting

Moving rotor.
Open the main circuit
Do not contact electrical

7.2 General Troubleshooting

To determine the cause of no- or low-AC output , refer to
the following steps and the troubleshooting flow chart
(Figure 7-1).
1. Check the condition of the voltage regulator 8-amp
fuse.
2. If the fuse is good, separately excite the generator.
(See Section 7.3)
duplicates the role of the voltage regulator in
providing the excitation current to the rotor.
Generator has no
output
Separately
excite
generator
Generator has no
output
Exciter circuit &
rectifier module
Test rotor
Figure 7-1 General Troubleshooting
Section 7 Generator Troubleshooting
The separate excitation test
Generator has
output
Test voltage
regulator &
wiring
Test stator
TP-593651
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