TP-5986 4/03
25
Section 7 Generator Troubleshooting
Section 7 Generator Troubleshooting
7.1 General
Before
beginning
the
following
troubleshooting
procedures, read all the safety precautions at the
beginning of this manual. The following tests include
additional safety precautions; OBSERVE THESE
PRECAUTIONS!
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Moving rotor.
WARNING
Testing the voltage regulator. Hazardous voltage can
cause severe injury or death.
High voltage is present at the
voltage regulator heat sink. To prevent electrical shock do not
touch the voltage regulator heat sink when testing the voltage
regulator.
(PowerBoost
t
,
PowerBoost
t
III,
and
PowerBoost
t
V
voltage regulator models only)
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death.
Electrocution is possible
whenever electricity is present.
Open the main circuit
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
.
Do not contact electrical
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
7.1.1
Troubleshooting
To determine the cause of no- or low-AC output , refer to
the following steps and the troubleshooting flowchart
(Figure 7-1).
Verify the operation of the alternator
components before replacing the controller board or
voltage regulator.
General Troubleshooting
1. Check the condition of the voltage regulator’s
10-amp fuse.
2. If the fuse is functional, separately excite the
generator. See Section 7.1.2.
The separate
excitation test duplicates the role of the voltage
regulator by providing excitation current to the
rotor.
Generator has no
output
Separately
excite
generator
Test rotor
Test voltage
regulator and
wiring
Generator has no
output
Generator has output
Test stator
TP-598651
Check for flashing
voltage at the brushes
Troubleshoot controller
Figure 7-1
General Troubleshooting
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Страница 10: ...VI Safety Precautions and Instructions TP 5986 4 03 Notes ...
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Страница 18: ...TP 5986 4 03 4 Section 1 Specifications Notes ...
Страница 20: ...TP 5986 4 03 6 Section 2 Scheduled Maintenance Notes ...
Страница 22: ...TP 5986 4 03 8 Section 3 Intake and Exhaust System Notes ...
Страница 26: ...TP 5986 4 03 12 Section 4 Fuel System Notes ...
Страница 46: ...TP 5986 4 03 32 Section 7 Generator Troubleshooting Notes ...
Страница 54: ...TP 5986 4 03 40 Section 9 Generator Disassembly Reassembly Notes ...
Страница 56: ...TP 5986 4 03 42 Section 10 Wiring Diagrams and Voltage Reconnection 10 1 Schematic Wiring Diagram 359343 J ...
Страница 60: ...TP 5986 4 03 46 Section 10 Wiring Diagrams and Voltage Reconnection Notes ...
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