The diameter of the pipe shall be large enough to avoid excessive back pressure. Other possible
equipment in the piping must also be designed and dimensioned to avoid excessive flow
resistance.
A condensate trap must be fitted on the vent pipe near the engine.
The connection between engine and pipe is to be flexible.
Design data:
see Technical dataFlow
see Technical dataBackpressure, max.
80°CTemperature
Fig 7-7 Condensate trap
(DAAE032780B)
The size of the ventilation pipe (D2) out
from the condensate trap should be
equal or bigger than the ventilation pipe
(D) coming from the engine.
For more information about ventilation
pipe (D) size, see the external lubricating
oil system drawing.
The max. back-pressure must also be
considered when selecting the ventilation
pipe size.
7.5 Flushing instructions
Flushing instructions in this Product Guide are for guidance only. For contracted projects,
read the specific instructions included in the installation planning instructions (IPI). The fineness
of the flushing filter and further instructions are found from installation planning instructions
(IPI).
7.5.1 Piping and equipment built on the engine
Flushing of the piping and equipment built on the engine is not required and flushing oil shall
not be pumped through the engine oil system (which is flushed and clean from the factory).
It is however acceptable to circulate the flushing oil via the engine sump if this is advantageous.
Cleanliness of the oil sump shall be verified after completed flushing.
7.5.2 External oil system
Refer to the system diagram(s) in section External lubricating oil system for location/description
of the components mentioned below.
The external oil tanks, new oil tank and the system oil tank (2T01) shall be verified to be clean
before bunkering oil.
Operate the separator unit (2N01) continuously during the flushing (not less than 24 hours).
Leave the separator running also after the flushing procedure, this to ensure that any remaining
contaminants are removed.
Wärtsilä 46F Product Guide - a19 - 1 December 2017 7-15
7. Lubricating Oil SystemWärtsilä 46F Product Guide
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