11-14
TABLE 11-1. TROUBLESHOOTING GENSET FAULTS (CONT.)
@@@@ Some genset service procedures present hazards that can result in severe personal
injury or death. Only trained and experienced service personnel with knowledge of fuels, electricity,
and machinery hazards should perform genset service. See Safety Precautions.
Accidental or remote starting can cause severe personal injury or death. Before removing a panel or
access door, disconnect the negative (–) cable from the battery to prevent the engine from starting.
WARNING
FIELD SENSE LOST–RAM—CODE NO. 48
Control Logic:
Controller unable to sense field voltage
Corrective Action:
Replace the genset controller (p. 9-1)
OVERPRIME—CODE NO. 57
Control Logic:
A local or remote control switch was held in the Prime position for more than 5 minutes
Corrective Action:
1. Check for and remove any object that may be holding any control switch (local or remote) in the prime
position.
2. Replace any control switch (S4) in the control system that does not open across terminals
1
and
2
when
Stop
is released (p. 9-5).
HIGH EXHAUST TEMPERATURE—CODE NO. 58
Control Logic:
Exhaust temperature exceeded design limits due to lack of water delivered to the exhaust/
water mixer
Corrective Action:
Refer to Pages A-1 through A-3 as appropriate.
1. Open the sea valve.
2. Check for and clean a blocked sea water strainer. If above the water line, fill the strainer with water to
assist priming.
3. Check for and reconnect or replace any disconnected, kinked or leaking raw water hoses.
4. Inspect the siphon break (if provided) for proper operation.
5. Check for and readjust a loose pump belt (p. 4-9).
6. Check for a worn raw water impeller and replace as necessary (p. 4-10).
7. Clean the heat exchanger (p. 4-12).
8. Disconnect connector
P1
(black) from the genset controller (p. 9-1) and check continuity between
Pin
P1-11
and
B–
(ground). If open, check for a missing, bent or corroded pin, faulty wiring or open ex-
haust temperature switch
S5
(p. 9-7). Repair as necessary.
EXTERNAL SHUTDOWN—CODE NO. 61
Control Logic:
Genset was shut down by a fire suppression system or other external control
Corrective Action:
Make all necessary repairs to the genset and connected equipment and reset the exter-
nal control which shut down the genset.
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