ABB HT612026 Operation Manual page 63

Operation Manual / A170-M.. - A175-M..
7 Periodic maintenance / 7.4 Cleaning the compressor during operation
Surging of the compressor stage
Should repeated surging of the compressor stage occur during compressor cleaning, first
the cleaning parameters (water flow rate) 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 surging of the compressor stage continues to occur during compressor cleaning despite
correct settings, this can be remedied by reducing the engine load further during cleaning of
the compressor. The reduction of the engine load can lead to a reduction in the effective-
ness of the compressor cleaning.
To avoid a reduction in engine availability, the compressor stage can be cleaned at re-
u
duced engine load during the drying time after wet cleaning of the turbine has been com-
pleted (see section
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Cleaning turbine and nozzle ring
HZTL4033_EN
→64).
Rev.K January 2022