Operation Manual

Job Card No.:
Engine:
Filing No.:
Fuel Duplex Filter
0178-20-10 2051
Servicing
Cleaning fuel duplex filter
While the engine is running, only one of the
two filter chambers should be operative, lever
(7) - Fig. 1 - of the 3-way cock being in the LH
or RH position accordingly.
Should the fuel pressure fall off, or if a red
indicator appears in the window of the pressu-
re differential monitor (30) - Fig. 2 - (if provi-
ded), change over to the other filter chamber
and clean the soiled one immediately. When
running on distillate fuel, a paper filter is used;
when running on MDF blend or heavy fuel, a
strainer filter is used.
The pressure differential monitor indicates the
degree of soiling and thus the deadline for
cleaning the filter. If the lever (7) of the 3-way
cock is at the RH position, the LH chamber is
in operation, and vice versa.
Interval for Filter Cartridge Change and Cleaning
Filter Chamber
Changing of the cartridge and cleaning of the filter
chamber are due when the window is filled to about
75 % by the red indicator or after 500 running hours
at the latest.
The following maintenance work is also necessary
under certain conditions:
● Change filter cartridge and clean filter chamber
about 25 running hours after commissioning new
engines or engines which have been shut down
for more than 3 months.
● Change filter cartridge and clean filter chamber
about 25 running hours after every major plant
repair job involving the fuel system.
Job:
Place lever (7) of 3-way cock in the appropriate
position. Open shut-off valve (10) of leakage line and
allow filter chamber to drain empty. Undo hex. bolt
(2). Take off cover (1).
Allow filter chamber to drain completely,
otherwise dirt may pass to the clean side.
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07.10.01 Page 1 of 2
S/BVM 628
Fig. 1
Fig. 2
Tools:
- Standard tools
- Diesel fuel
- Cleaning brush
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