Kohler SFGLD480 Operation & Maintenance Manual page 307

SYMPTOM
Engine does not reach rated
speed
Engine stops
PRODUCT INFORMATION
IO-G-T-00-001e
GAS ENGINES TROUBLESHOOTING
PROBABLE CAUSE
Overload due to wrong reading of power
signal
Fuel system fails
1. Low gas pressure
2. Misadjusted pressure regulator
3. Poor carburetion
4. Clogged gas filter
Fuel leaks
Inadequate speed setting
Clogged air filter
Fuel system fails:
1. Low gas pressure
2. Misadjusted pressure regulator
3. Poor carburetion
4. Clogged gas filter
5. Regulator off
6. Shut-off electric valve closed
7. Fuel leaks
No spark produced
1. Ignition module failure
2. Lead or connector loose
3. Pickup damaged or dirty, inadequate
spacing, wire detached or hall effect
pickup not synchronised
4. Power supply failure
Stop caused by GKCS (knocking)
PLC alarm
Control system alarm
Overspeed
Running instability
Line dropping or micro-cut
INDEX
B
REMEDY
Calibrate power signal
1. Check supply line or contact supplier
2. Readjust or change spring
3. Readjust carburettor mixture valve
Check MAP and MAT signals
Check NOx sensor or lambda sensor
4. Clean or change filter
Repair leaks
Adjust rated speed setting
Change air filter
1. Check supply line or contact supplier
2. Readjust or change spring
3. Readjust carburettor mixture valve
Check MAP and MAT signals
Check NOx sensor or lambda sensor
4. Clean or change filter
5. Reset regulator
6. Check valve power supply
7. Repair leaks
1. Change module
2. Check connectors and wires
3. Check and replace pickups if necessary.
Check synchronisation of reset and hall
effect pickups with an oscilloscope
4. Check voltage, batteries and chargers.
Boroscope engine
See knocking paragraph in next sheet
Identify alarm and assess its importance
before resetting
Check equipment and reset alarm
Check equipment and reset alarm
Carry out a general check of engine to
determine the cause of instability.
Reset power supply
6.1.4
DATE
Dep. 2
February 2016
O&M_2.002211.810_A_10_2016
(1)
(1)
(2)
(2)
4/10