Maintenance
6606−1/A2
Winterthur Gas & Diesel Ltd.
1/ 3
Cleaning Instructions
1. General 1..........................................................
2. Cleaning the air side 1..............................................
3. SAC Air Side − Clean during Operation 3.............................
3.1 Procedure 3..................................................
1. General
For the day−to−day checking of the scavenge air cooler, measure the drop in
pressure and temperature of the scavenge air across the cooler while the engine is
running.
Compare these measurements with the testbed data.
An increase in the air pressure drop across the scavenge air cooler indicates fouling
of the air side of the cooler.
A decrease in the air temperature drop across the scavenge air cooler indicates
fouling of the water side of the cooler.
If the measurements indicate fouling of the water side of the air cooler element, the
element must be overhauled/cleaned.
If the measurements indicate fouling of the air side of the air cooler element, it is
necessary to inspect the air cooler element.
If the air side of the element is fouled, clean the element using the spray pipe
arrangement fitted above the air cooler element.
D SAC air side can be cleaned during engine operation.
D SAC water side can only be cleaned when engine is stopped.
2. Cleaning the air side
The air side of the cooler is cleaned by injecting a chemical fluid through the spray
pipe arrangement fitted to the air chamber above the cooler element.
1) Product: ACC 9, produced by Drew Chemical Corp., New York, USA.
2) Product: 80B, produced by Vecom Int., Maassluis, Holland
Scavenge Air Cooler
2021
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