WÄRTSILÄ VASA 6L32, Instruction Manual

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Note! Before using a lubricating oil not listed in the table, the engine
manufacturer must be contacted. Lubricating oils that are not
approved have to be tested according to the engine manufac-
turer’s procedures.
02.2.3 Maintenance and control of the lubricating oil
a) Centrifuging of the system oil is recommended in order to sepa-
rate water and insolubles from the oil. Water must not be added
when centrifuging (“washing”). The oil should be pre-heated to 80
- 95 °C. Many oil manufacturers recommend a separation tem-
perature of 90 - 95 °C for an effective separation. Please check
with the supplier of your lubricating oil what the optimal tempera-
ture is. Use the highest recommended temperature. For efficient
centrifuging, use only about 20% of the rated flow capacity of the
separator. For optimum conditions the centrifuge should be capa-
ble of passing the entire oil quantity in circulation 4 - 5 times every
24 hour at 20% of rated flow. Gravity disc should be chosen acc.
to oil density at separation temperature. Follow the operation
instructions given by the separator manufacturer for optimal per-
formance of the separator.
Note! The lubricating oil separation efficiency influences the condition of
the lubricating oil and the change interval of the lubricating oil
batch. Depending on type of application and from the different
lubricating oil system arrangements point of view, the following
separation routines are adviced:
- Continous running of the separator(s) when the engine(s) is run-
ning, recommended in the first place.
- Periodical separation of auxiliary engine in stand-by or running
mode in installation equipped with one or more separator(s), which
treats lubricating oil of more than one engine.
Caution! Defects on automatic, “self-cleaning” separators can quickly in-
crease the water content of the oil under certain circumstances!
(The water control valve fails.)
b) During the first year of operation it is advisable to take samples of
the lubricating oil at 500 operating hours intervals. The sample should
be sent to the oil supplier for analysis. On the basis of the results it is
possible to determine suitable intervals between oil changes. Fre-
quent oil analysis at 500 - 1000 operating hours intervals is also
recommended after the first year of operation to ensure safe engine
operation.
See also section 02.2.7., Handling of oil samples.
When estimating the condition of the used oil, the following
properties should be observed. Compare with guidance values
(type analysis) for new oil of the brand used.
Fuel, Lubricating Oil, Cooling Water 200549-01
02 - 14 W20/W32/W46, W46F, 32, 32LN