How
to maintain lubricating oil system of emergency diesel generator set?
1.Select suitable engine
oil for emergency diesel generator.
Generally speaking, the
instruction manual of each generator set specifies the type of lubricating oil
used for the unit. If there is no lubricating oil specified in the manual, the
lubricating oil of similar brand can be used. Never mix different brands of
engine oil.
2.During the use of
emergency generator set, often check the quality of lubricating oil.
Check the mechanical
admixture in the engine oil when the engine is hot, and pull out the engine oil
scale to check.
Why
should the oil level be suitable?
The oil level of the
diesel generator set shall be checked before starting each time to ensure that
the oil level is within the specified range.
1.Low oil level will
causes over wear, tile burning and cylinder pulling.
2.High oil level will
cause oil leaking into cylinder, combustion chamber carbon deposit, piston ring
binding and blue smoke from exhaust.
Therefore, when the oil
in crankcase is insufficient, add it to the specified oil level and find out
the reason for the lack of oil. When the oil level is too high, check whether
there is water and fuel in the engine oil, find out the cause and solve it.
When adding oil, use a cleaning funnel with a filter screen to prevent
impurities from entering the crankcase and affecting the normal operation of the
generator set.
Why
should oil pressure of diesel generator be suitable?
When starting the unit
to rated speed or middle speed, the oil pressure should rise to the specific
value within 1min. If oil pressure can not reach to the specific value, we
should find out the reason to adjust pressure to the specific value.
Check
engine oil quality during the use of emergency diesel generator
1.Inspection of
mechanical admixture. Check the mechanical impurities in the engine oil of the
generator set when the engine is hot (at this time,impurities floating in the
engine oil). When checking, draw out the oil scale and observe at the bright
place. If small particles is found on the oil scale or the scribe on the oil
scale can’t be seen clearly, it indicates there are many impurities in engine
oil. Besides, we also can twist engine oil to check whether there are
particles, to confirm if the oil can be used. If the oil appears black or there
are too many impurities, change the oil and clean the oil filter.
2.Inspection of oil
viscosity. The accurate method is to use viscometer to measure. But the more
commonly used method is: put the engine oil on the finger and twist it, if
there is viscosity feeling, and there is drawstring phenomenon, it indicates
that the engine oil viscosity is suitable. If not, it indicates that the engine
oil viscosity is poor. We should find out the reason and replace engine oil.
Clean
lubricating system and change oil regularly
1.The engine oil filter
shall be cleaned regularly; the engine oil basin and oil passage shall be
cleaned when the engine oil is changed.
2.Cleaning method:
Drain the oil when the
engine is hot, so as to remove the impurities in the oil basin, oil passage and
oil filter as much as possible. Replay the mixed oil in the oil basin (15% ~
20% kerosene, or mix according to the proportion of diesel oil: oil = 9:1), the
quantity is 60% ~ 70% of the capacity of the lubrication system. Run the diesel
engine at low speed for 5 to 8 minutes (oil pressure above 0.5kgf/cm2), then
shut down, drain the mixed oil, clean the oil filter, filter screen, oil
radiator and crankcase, and add new oil.
Starlight Power not only
provides genset technical support, but also supplies 20-3000kw
prime/emergency/standby electric generators. Contact us by email
sales@dieselgeneratortech.com directly, we will answer your question and guide
you to choose the suitable genset.
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