PRE-OPERATING PREPARATIONS34
6
ENOM00041-B
Warning indicators, faults and remedy
Remarks
*1: In this case, oil pressure switch is “ON”.
*2: It is necessary to stop the engine, if you want to stop the working indicators and re-set the warning
system.
High speed ESG (Electronic Safety Governor)
High speed ESG is a device to prevent over revolution of the engine. If the load to the engine becomes light for
some reason, it runs at a higher speed than the usual. In such the case, the buzzer sounds and the ESG is
activated not to ignite the spark plug, therefore, the engine speed varies and be controlled under 6300min
-1
(rpm).
Low speed ESG
Low speed ESG is a device to prevent the engine from getting damage. If the engine has problems regarding
cooling water, oil pressure, and sensors, the low speed ESG is activated not to ignite the spark plug, and
disable fueling therefore, the engine speed varies and be controlled under 2800min
-1
(rpm).
Warning indicators
Description of faults Remedy
Sound Lamp (LED)
Low
speed
ESG
High
speed
ESG
One beep On for 5 sec. Normal system test when start up
Continuous ON ON
Engine speed exceeds maximum
allowable RPM
1
Continuous
*2
ON
*2
ON
*2
Low oil pressure
*1
2
Continuous ON ON Water over temperature
3
Intermittent
short beep
*2
Blinking
*2
ON
*2
Water temp or MAP sensor out of
range
4
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