3 OPERATION
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
99
Pub. No. 291Y1-40720 Revision: 5
Operation
Be sure to start the engine according to the
operating guidelines of the generator.
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.
Stay away from rotating parts during
operation.
* Otherwise you may get caught in the rotating
parts and seriously injured.
Do not approach the engine side
without care during operation.
* Serious injury may result due to unexpected
device operation.
Do not touch any part of the engine
(other than the manual stop lever)
during operation or immediately after
operation.
* If you touch it, you may get burned by heat.
* Before starting the inspection and maintenance
work, make sure that the engine is cooled
down.
Do not turn off the battery switch
during operation.
* Otherwise, malfunctioned instruments may
cause such problems such as damage to the
devices due to operation under low oil pressure,
forcibly stopped by solenoids, or stopping
failure.
* It may also cause degradation of the diodes and
transistors in the alternator.
Never turn the key to the "START"
position during operation.
* Otherwise, the starter may be damaged.
Do not remove the protective covers
during operation.
* If you get caught in rotating parts, you may get
seriously injured.
Do not perform the inspection and
maintenance work during operation.
* Unexpected activation of the devices may result
in serious injury or damage to the devices.
Do not clean the engine during
operation.
* Otherwise, water or cleaning solution will enter
the engine, which may cause piston scuffing
and damage to the devices.
Do not operate the engine at no load
or low load for a prolonged period of
time.
* Otherwise, it may cause deterioration in the
exhaust gas properties.
Do not operate the engine at a load
exceeding the specified value or for a
prolonged period of time.
* Otherwise, the main bearing or connecting rod
bearing may seize.
* Excessive thermal load may cause piston
scuffing.
* Otherwise, the crankshaft stress may become
too large, and the crankshaft may crack or
break.
Do not approach near the breather or
breather gas.
* The breather releases breather gas in the air.
Contacting the breather gas may cause burns.
Ventilate the machine room (engine
room) sufficiently.
* Otherwise, deterioration in the exhaust gas
properties and damage to the devices may
occur due to insufficient air intake.
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)
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