
TP-6255 7/06
42
Section 6 Troubleshooting
Troubleshooting Chart, continued
Problem
Possible Cause
Corrective Action
Reference
Generator set
Air cleaner clogged
Replace element.
Section 3
operates
erratically
Governor adjustment incorrect
Adjust governor stability.
Section 4.4
erratically
Inadequate cooling (hot engine
only)
Inspect air inlet and outlet.
—
Carbon buildup in engine
Clean cylinder head.
Engine S/M
Engine valves not seating
correctly
Inspect valves and valve seats.
Engine S/M
Generator set
lacks power
Air intake restriction, inadequate
cooling
Inspect air intakes and exhaust for
obstructions.
Check the air cleaner.
Section 3
Generator overloaded
Reduce load.
Generator Set I/M
Engine not running at rated rpm
Check controller settings for unit
configuration (UC) and engine
type (EC).
Adjust governor speed.
Section 7.5
Section 4.4
Engine power loss
Refer to the Engine Service
Manual for troubleshooting and
repair instructions.
Engine S/M
Governor malfunction or
misadjustment
Test/readjust governor.
Section 4.4
Generator set
overheats
Inadequate cooling
Inspect cooling system for
obstructions.
—
Air cleaner clogged
Replace element.
Section 3
Low output or
i
Generator overloaded
Reduce load.
Generator Set I/M
p
excessive
drop in
voltage
Incorrect controller configuration
Check and adjust the controller
configuration parameters.
Section 7.5
voltage
Incorrect controller voltage
settings
Check and adjust the controller
voltage settings.
Section 7.5.3
Alternator or control system
Perform separate excitation
procedure to isolate problem to
the alternator or the control
system.
Section 8.2
SCR module
Check wiring and connections to
the SCR module.
Check the auxiliary winding fuse
F1 (lead 55).
Replace SCR module and test
voltage.
Section 7.5
Section 7.7
Controller
Check the controller settings.
Check the controller fuse, wiring
and connections.
Before replacing the controller,
replace the SCR module and test
voltage.
Section 7.5
Section 7.7
Section 7.11
Rotor (open, grounded, or shorted
windings)
Test and/or replace.
Section 8.6
Stator (open, grounded, or
shorted windings)
Test and/or replace.
Section 8.7
Low engine speed causing
voltage roll-off
Check system voltage/frequency
(UU) and engine type (EC)
parameters.
Adjust the engine governor speed.
Troubleshoot the engine.
Section 7.5
Section 4.4
Engine S/M
Содержание 6.5-27EFOZD
Страница 1: ...Marine Generator Sets Models 8 32EOZD 6 5 27EFOZD TP 6255 7 06a Service ...
Страница 12: ...TP 6255 7 06 12 Service Assistance Notes ...
Страница 22: ...TP 6255 7 06 22 Section 1 Specifications Notes ...
Страница 28: ...TP 6255 7 06 28 Section 3 Intake and Exhaust System Notes ...
Страница 62: ...TP 6255 7 06 62 Section 7 Controller Notes ...
Страница 78: ...TP 6255 7 06 78 Section 8 Component Testing and Adjustment Notes ...
Страница 87: ...TP 6255 7 06 87 Section 10 Wiring Diagrams GM46351 Figure 10 2 Wiring Diagram for 9EOZD 7EFOZD Model ...
Страница 88: ...TP 6255 7 06 88 Section 10 Wiring Diagrams ADV6845A F Figure 10 3 Wiring Schematic for All Models ...
Страница 89: ...TP 6255 7 06 89 Section 10 Wiring Diagrams ADV6845B F Figure 10 4 Wiring Diagram Schematic for All Models ...
Страница 92: ...TP 6255 7 06 92 Section 10 Wiring Diagrams Notes ...
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