Lubricating Oil Full Flow Filter; Flushing Of Lube Oil System - Man B&W S50MC-C8-TII Project Manual

MAN B&W

Lubricating oil full flow filter

Lubricating oil flow .............. see 'List of capacities'
Working pressure ......................................... 4. bar
Test pressure .................... according to class rules
Absolute fineness .........................................40 µm*
Working temperature ............. approximately 45 °C
Oil viscosity at working temp. ............. 90  00 cSt
Pressure drop with clean filter ....maximum 0.2 bar
Filter to be cleaned
at a pressure drop .......................maximum 0.5 bar
* The absolute fineness corresponds to a nominal
fineness of approximately 25 µm at a retaining
rate of 90%.
The flow capacity must be within a range from
00 to 2% of the capacity stated.
The fullflow filter should be located as close as
possible to the main engine.
If a double filter (duplex) is installed, it should
have sufficient capacity to allow the specified full
amount of oil to flow through each side of the filter
at a given working temperature with a pressure
drop across the filter of maximum 0.2 bar (clean
filter).
MAN B&W L60MC-C7/8, L60MEC7/8, S50MC-C7/8,
S50MEC7/8, S50ME-B8/9
If a filter with a backflushing arrangement is in-
stalled, the following should be noted:
• The required oil flow, specified in the 'List of
capacities', should be increased by the amount
of oil used for the backflushing, so that the
lubricating oil pressure at the inlet to the main
engine can be maintained during cleaning.
• If an automatically cleaned filter is installed, it
should be noted that in order to activate the
cleaning process, certain makes of filter require
a higher oil pressure at the inlet to the filter than
the pump pressure specified. Therefore, the
pump capacity should be adequate for this pur-
pose, too.

Flushing of lube oil system

Before starting the engine for the first time, the lu-
bricating oil system on board has to be cleaned in
accordance with MAN Diesel's recommendations:
'Flushing of Main Lubricating Oil System', which is
available on request.
MAN Diesel
8.05
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