Man B&W S80ME-C7, Project Manual

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MAN B&W 8.09
Page 2 of 4
MAN Diesel
MAN B&W ME/ME-C/ME-GI engines 198 48 523.2
Hydraulic control oil filter
The filter is 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 is fitted onto the
filter
The following data is specified in Fig. 8.09.02:
• Filter capacity
• Maximum pressure drop across the filter
• Filter mesh size (absolute)
• Oil viscosity
• 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 is an off-line filter and removes me-
tallic and non-metallic particles larger than 0,8
µm as well as water and oxidation. The filter has a
pertaining pump and is to be fitted on the top of
the hydraulic control oil tank.
A suitable fine filter unit is:
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 is to be of the liquid
straight type.
Pressure indicator
The pressure indicator is to be of the dial type.
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 is to be 0 bar.
The return pipes are to be placed vertical or laid
with a downwards inclination of minimum 5°.