Operation
8345−1/A1
Winterthur Gas & Diesel Ltd.
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Drainage System and Wash-water Pipe System
1. General
You must do checks at regular intervals to make sure that all drain pipes are not
blocked. The checks on the drain pipes from the piston rod gland box (20) and the
piston underside (9) are important (see Fig. 1).
The ambient temperature and humidity can cause condensate to flow out upstream
and downstream of the scavenge air cooler (14). Very high ambient conditions can
make up to 0.16 kg/kWh of condensate.
2. Condensate Drain
Note: Blocked drains let too much condensate collect in the scavenge air
receiver. The water / water vapor has an unwanted effect on piston
operation and increases wear on the piston rings and cylinder liners.
The condensate drain must operate correctly as follows (see also 0240-1 Checks and
Precautions, paragraph 2):
1) Make sure that all valves in the condensate drain pipe are fully open.
2) Make sure that the ball valves (18) and (19) are in the position USUAL
OPERATION (see Fig. 1).
Note: The condensate collectors (12) collect dirt particles.
3) At regular intervals, remove dirt particles from the condensate collector (12) when
the engine has stopped (see the Maintenance Manual 0380-1 Maintenance
Schedule).
4) At regular intervals, look at the sight glasses of the condensate collector (12) to
make sure that water flows (see the Maintenance Manual 0380-1 Maintenance
Schedule).
Note: For engines with two turbochargers there are two more level switches
(LS4072A and LS4076A) installed. For more data see, 4003-4 Pipe
Diagram − Water Systems (Scavenge Air Receiver and Turbocharger).
If one, or the two level switches LS4071A (10), LS4075A (13) activates an alarm
(condensate level too high), you must find the cause immediately and correct the
defect. The possible causes of the alarm are:
D The ball valves (18) and (19) are in the position CLOSED (see Fig. 1).
D The scavenge air cooler (14) is defective (see 0550−1 Operation during Unusual
Conditions).
D If the orifices (11) are blocked and / or there is too much contamination in the
condensate collector (12) (the filter is blocked).
5) To clean the condensate collector (12) and the orifice (11) do step a) to step c).
a) Stop the engine.
b) Clean the condensate collector (12).
c) Clean the orifice (11).
Note: You must clean the filters in the condensate collector (12) and the
orifices (11) as soon as possible.
2014
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