ABB HT604574 Operation Manual page 50

Operation Manual / TPS48-D/E.. - TPS61-D/E..
5 Maintenance / 5.2 Cleaning the compressor during operation
Principle of wet cleaning
V-engines
Sequential charging
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Cleaning method
Cleaning the compressor while in operation is carried out as wet clean-
ing. This cleaning method is tested and approved by ABB Turbocharging.
To clean the compressor stage during operation, water is injected in
front of the compressor wheel through an injection pipe fitted in the fil-
ter silencer or the suction branch.
The water does not act as a solvent, but the dirt deposit is removed by
the mechanical impact of the droplets. This is a very suitable process,
provided that the degree of contamination is not too high.
CAUTION
Corrosion and deposits when cleaning
Damage and impairment of turbocharger parts due to salt water and
cooling water additives
Don't use salt water for cleaning, but only clean fresh water.
u
CAUTION
The injection pipe must on no account be connected directly via a cock
to a water pipe or a dosing vessel larger than the one supplied. This
prevents uncontrolled volumes of water entering the turbocharger and
engine, which can lead to serious damage.
In the case of V-engines with several turbochargers on each engine, we
recommend parallel cleaning of the compressors. This cleaning process
is faster and the risk of turbocharger surging is reduced.
In the case of sequential charging, care must be taken to ensure that tur-
bocharger compressors are cleaned regularly, especially after periods of
operation in the lower performance range.
HZTL2410_EN Rev.F March 2020