Operation Manual / 4 Product description / A150-M56/66/57/67 -
A155-M..
6 Periodic maintenance work / 6.2 Cleaning the compressor during
operation
© Copyright 2020 ABB. All rights reserved. HZTL4032_EN Rev.P March 2020
72000 Compressor casing
27000 External water pressure vessel
27005 Sealing plug
01 Water pipe to filter silencer or air suction branch
02 Pressurized air inlet pipe
03 Valve activator
Pressurized air from the compressor casing(72000) of the turbocharger passes through the
pipe(02) to the water pressure vessel(27000). As soon as the valve activator(03) is activ-
ated, water is pressed into the pipe (01) and routed to the filter silencer or air suction
branch.
The water does not act as a solvent. The coating is removed by the mechanical action of the
impacting droplets.
6.2.5 Carrying out wet cleaning of the compressor
Fig.22: Carrying out wet cleaning of compressor
Engine load Filling amount of water pressure
vessel [dm
3
]
Water temperature
[°C]
Water injection
period [s]
50…85% 0.4 5…30 10
Table11: Parameters for wet cleaning of compressor
u Remove sealing plug (27005).
u Fill container with 0.4 dm
3
of pure water.
u Screw in sealing plug (27005) again.
u Push the valve activator(03) against the spring and hold for 10…15seconds until the en-
tire volume of water is injected.
u Continue to operate the engine for at least five minutes to ensure that all of the water is
flushed out of the system.
Not more than three cleaning cycles should be conducted consecutively. Before repeating
the process, continue to operate the engine for at least five minutes to ensure that all of the
water is flushed out of the system.
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