Flushing Instructions - WÄRTSILÄ 46F Product Manual

7. Lubricating Oil System
Design data:
Flow
Backpressure, max.
Temperature
Fig 7-8
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.
7.5.3 Type of flushing oil
7.5.3.1 Viscosity
In order for the flushing oil to be able to remove dirt and transport it with the flow, ideal viscosity
is 10...50 cSt. The correct viscosity can be achieved by heating engine oil to about 65°C or
by using a separate flushing oil which has an ideal viscosity in ambient temperature.
7.5.3.2 Flushing with engine oil
The ideal is to use engine oil for flushing. This requires however that the separator unit is in
operation to heat the oil. Engine oil used for flushing can be reused as engine oil provided that
no debris or other contamination is present in the oil at the end of flushing.
7-16
Condensate trap
(DAAE032780B)
see Technical data
see Technical data
80°C
The size of the ventilation pipe (D2) out
from the condensate trap should be
bigger than the ventilation pipe (D) com-
ing 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.
Wärtsilä 46F Product Guide
DAAB605814