3 OPERATION
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
98
Pub. No. 291Y1-40720 Revision: 5
Warm-up Operation
Applying an excessive load when the engine is cold
may cause failure. Be sure to warm up the engine
according to the operating guidelines of the
generator.
1 Warm up the engine according to the
starting sequence of the generator.
• When warming up the engine by setting
particularly, operate it at no load and idle
speed.
2 Check the engine oil pressure with
the oil pressure gauge.
• Standard value: 0.3 MPa {3.1 kgf/cm
2
}
[43.51 psi] or more
3 Check the connections for a leak of
fuel, engine oil, coolant and exhaust
gas.
• Check around the engine thoroughly.
• If a leak is found, stop the engine and
contact your MHIET
dealer "
CONTACT LIST" (→ Page 10).
Stay away from rotating parts during
operation.
* Otherwise you may get caught in the rotating
parts and seriously injured.
Do not apply excessive load when the
engine is cold.
* Otherwise, it may cause a failure.
* If the engine is driven at an idle speed in the low
load range for a prolonged period of time,
unburnt fuel may accumulate in the flue and
explode.
Allowable minimum load during
continuous operation: Operate with
30% or more of the rated output.
Allowable continuous operation time
with a load factor of 30% or less of the
rated output: Limit the operation
within one hour.
Operate with a load factor of 50% or
more for 30 minutes or more after
continuous operation with 30% or less
of the rated output is conducted.
The following problems may occur
when light load operation is
conducted beyond the above
allowable range:
* Fuel and/or oil leak from the exhaust system
* Carbon build-up on the cylinder head and
exhaust pipe
* Sulfuric acid corrosion
* Dilution
* Generation of blue-white smoke (mainly during
low idle operation)
During warm-up operation, check the
connections for leak (fuel, engine oil,
coolant, and exhaust gas). If you find
any problems, stop the engine
immediately.
* Otherwise, a fire or damage to the devices may
occur.
* It may cause carbon monoxide intoxication or
environmental pollution.
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