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Operation Manual / Power2 850-M / 4 Product description
6 Periodic maintenance / 6.1 Foreword to maintenance
6
Periodic maintenance
6.1
Foreword to maintenance
Maintenance work includes regular visual controls and cleaning operations which are inten-
ded to ensure the trouble-free functioning of the low-pressure and high-pressure stage.
In this process, the exterior condition and the degree of contamination of the components
on which maintenance work is to be performed are determined.
Component to be main-
tained
LP compressor
HP compressor
HP turbine stage
LP turbine stage
2)
LP filter silencer
Table 7: Maintenance intervals
1) If the recommended cleaning intervals are incompatible with operation of the engine, con-
tact ABB Turbo Systems.
2) If present.
Compressor cleaning
We recommend cleaning the HP compressor after the LP compressor.
On V-engines with several low-pressure and/or high-pressure stages per engine, ABB Turbo
Systems recommends the parallel cleaning of the LP compressors as well as the parallel
cleaning of the HP compressors.
This cleaning process is faster and reduces the risk of surging of the low-pressure and high-
pressure stages.
Turbine stages cleaning
We recommend cleaning the LP turbine stage after the HP turbine stage.
© Copyright 2019 ABB. All rights reserved.
Recommended cleaning interval
25 ... 100 h
80 ... 200 h
500 h
HZTL4061_EN
1)
Operating state
Engine load: 50 ... 100 %
Engine load: 25%
Engine stopped
Rev.B
June 2019
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