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MAN B&W 8.09
Hydraulic control oil filter
The filter <strong>is</strong> to be of the duplex full flow type with
manual change over and manual cleaning or of
the automatic self cleaning type.
A differential pressure gauge <strong>is</strong> fitted onto the
filter
The following data <strong>is</strong> specified in Fig. 8.09.02:
• Filter capacity
• Maximum pressure drop across the filter
• Filter mesh size (absolute)
• Oil v<strong>is</strong>cosity
• Design temperature.
Off-line hydraulic control oil fine filter or purifier
Fig. 8.09.0
The off-line fine filter unit or purifier must be able
to treat 5-20% of the total oil volume per hour.
The fine filter <strong>is</strong> an off-line filter and removes metallic
and non-metallic particles larger than 0,8
µm as well as water and oxidation. The filter has a
pertaining pump and <strong>is</strong> to be fitted on the top of
the hydraulic control oil tank.
A suitable fine filter unit <strong>is</strong>:
Make: CJC, C.C. Jensen A/S, Svendborg,
Denmark - www.cjc.dk.
For oil volume < 0,000 litres:
HDU 27/-MZ-Z with a pump flow of 5-20% of the
total oil volume per hour.
For oil volume > 0,000 litres:
HDU 27/-GP-DZ with a pump flow of 5-20% of
the total oil volume per hour.
Temperature indicator
The temperature indicator <strong>is</strong> to be of the liquid
straight type.
Pressure indicator
The pressure indicator <strong>is</strong> to be of the dial type.
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Level alarm
The hydraulic control oil tank has to have level
alarms for high and low oil level.
Piping
The pipes can be made of mild steel.
The design oil pressure <strong>is</strong> to be 0 bar.
The return pipes are to be placed vertical or laid
with a downwards inclination of minimum 5°.
MAN B&W ME/ME-C/ME-GI engines 198 48 52�3.2
MAN Diesel