IHI NIIGATA MG(L)26HLX, Instruction Manual, Page: 65 / 204

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SECTION
２
- OPERATING INSTRUCTION
2.2 SPECIAL INSTRUCTIONS FOR HEAVY FUEL
OPERATION
２－２－０１
2.2 SPECIAL INSTRUCTIONS FOR HEAVY FUEL OPERATION
- The engine can be operated with LIGHT fuel (No 2 Diesel) under any load
conditions without any special precautions. However, operation with HEAVY
fuel (if the engine is equipped to do so) requires the following precautions:
- The engine should always be started and warmed up with LIGHT fuel. If the
switching to heavy fuel is not automated, the operator should make certain
that the fuel heater is operating and that the fuel temperature at the pump
will be in the 60-80
℃
range before the switch to heavy fuel is made.
- The engine should be operated on LIGHT fuel at lightly loaded conditions (less
than 1/3 of rated load). Operation at light load with heavy fuel can cause
excessive carbon buildup, injector plugging, loss of power, exhaust
slobbering, and excess smoke.
- The engine should not be shut down when operating on heavy fuel except in
emergency situations. The heavy fuel, as it cools, will thicken and can make
restating extremely difficult. The switch to LIGHT fuel should always be
made prior to shutdown and the engine should be run long enough to flush all
heavy fuel from the fuel lines and injectors.
If it is ever necessary to shut down the engine while operating with heavy fuel,
the fuel selector switch should be switched to LIGHT fuel and the transfer pump
should be used to flush the heavy fuel from the system. This should be done as
soon as possible after shutdown before the heavy fuel begins to cool.