ABB HT603545 Operation Manual page 54

Operation Manual / TPL76-C
5 Maintenance / 5.3 Cleaning the compressor during operation
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Surging of the compressor stage
Should repeated surging of the compressor stage occur during com-
pressor cleaning, first the cleaning parameters as well as the engine-side
system must be checked with regard to deviations (e.g. an increased
pressure loss in the charge air cooler) and corrected if necessary.
If, despite correct settings, surging of the compressor stage occurs
while cleaning the compressor, as a remedial measure the engine load
can be reduced further while cleaning the compressor. The reduction of
the engine load can lead to a reduction in the effectiveness of the com-
pressor cleaning.
To avoid a decreased engine availability, the compressor stage can be
u
cleaned at reduced engine load during the drying time after wet
cleaning of the turbine has been completed. (see section Wet cleaning
turbine and nozzle ring during operation). In this case, the water injec-
tion time for cleaning the compressor can be increased from ten to
forty seconds.
HZTL2485_EN Rev.G March 2020