ABB HT574400 Operation Manual page 75

Operation Manual / 4 Product description / A100-M axial
6 Periodic maintenance
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 effectiveness
of the compressor cleaning.
To avoid a reduction in engine availability, the compressor stage can be cleaned at re-

duced engine load during the drying time after wet cleaning of the turbine has been com-
pleted (see section Cleaning turbine and nozzle ring [➙ 46]).
© Copyright 2016 ABB. All rights reserved. HZTL4033_EN
Page 45 / 113
Revision A July 2016