IHI NIIGATA MG(L)26HLX, Инструкция по эксплуатации

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SECTION
２
- OPERATING INSTRUCTION
2.6 INSPECTION AND CARE OF
ENGINE DURING NORMAL OPERATING
２－６－０２
- If heavy fuel is used, the heating device at the tank outlet should be checked to make certain it
is operating properly and that fuel entering the engine is at the desired temperature viscosity.
(Refer to section 1.2).
The centrifuge normally has two functions: heating the heavy fuel and centrifuging to remove
water and solids. The heater is necessary to reduce the fuel viscosity for more efficient
centrifuging. Both functions should be checked. An additional fuel filter is used for heavy
fuel applications. Some are of the automatic-cleaning type. This filter should be checked for
excessive restriction.
- Check the lube oil level. If a dry sump system is used, the level should be checked once daily.
If a wet sump system is used, it should be checked twice daily. If the oil level is low, additions
should be made (if possible) when the engine has cooled. If the engine is equipped with an
external system that maintains the oil level, it should be checked to insure that it is working
correctly. If makeup oil is added, the amount should be recorded so that accurate oil
consumption records can be maintained.
- Check the lubricating oil system operating pressure (normal value for rated speed is 0.50
～
0.60MPa. If the pressure drops below 0.44Pa check the filters for excessive restriction.
If the engine is equipped with a bypass centrifugal filter, it should be removed and cleaned
at least every 100 hours : if the weight of accumulated sludge increases appreciably from the
previous cleaning, the quality of the lube oil should be checked.
An external oil pressure regulating valve (flow valve) is also included in the circuit (see
sketch). This valve is set to provide the correct pressure at normal operating conditions
and should not need frequent readjustment. However, if low oil pressure exists and
is not corrected by cleaning the filters, it can be manually reset to the correct range with
this regulating valve.
Sketches of this regulating valve and of the centrifugal lube oil filter are shown below: