Operation
6606−1/A1
Winterthur Gas & Diesel Ltd.
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3. SAC Air Side − Clean during Operation
The equipment necessary to clean the air side of the SAC is installed on the engine.
3.1 Intervals
Initially, it is recommend that you clean the SAC one time each week. If there is no
change in the pressure difference (Dp) through the SAC, the interval can be extended
(e.g. one time each month).
The pressure difference must not be more than the maximum limit (Dp increase of
50% compared to the shop test value at the same engine load). For more data, see
the Maintenance Manual 0380-1).
The quantity of contamination in the SAC is related to the condition of the airflow into
the SAC and the maintenance of the air suction filter on the turbocharger.
Note: It is recommended that you do not clean the SAC in tropical conditions
because of increased condensation.
3.2 Cleaning Agents
Use cleaning agents only from recommended suppliers. You must follow the
instructions in the supplier documentation for the applicable water/cleaning fluid
ratios.
For in-service cleaning, use only those fluids that have a sufficiently high flash point.
3.3 Procedure
Clean the SAC while the engine operates at less than 50% load (see also the
instruction panel on the engine). The air temperature downstream of the compressor
(turbocharger) must not be more than 100°C. This is because heat will change too
much of the cleaning agent to a gas.
1) Decrease the engine power to the value given before.
2) Make sure that compressed air and fresh water are available at the shut-off
valves (4 and 1, Fig. 2).
Operating Instructions and Cleaning
2017−08
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