Man B&W L35MC6-TII, Project Manual

Page: 196 / 375

MAN B&W 8.05
Page 2 of 3
MAN Diesel
MAN B&W S46MC-C, S46ME-B, S42MC, S40MC-C,S40ME-B,
S35MC, S35MC-C, S35ME-B, L35MC, S26MC
198 59 104.2
Lubricating oil full flow filter
Lubricating oil flow .............. see ‘List of capacities’
Working pressure .........................................4.0 bar
Test pressure .....................according to class rules
Absolute fineness .........................................40
µ
m*
Working temperature ............. approximately 45 °C
Oil viscosity at working temp. ............. 90  100 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
µ
m at a retaining
rate of 90%.
The flow capacity must be within a range from
100 to 112% 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).
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.