Operation Manual / Power2 850-M / 4 Product description
6 Periodic maintenance / 6.1 Foreword to maintenance
© Copyright 2020 ABB. All rights reserved.
HZTL4061_EN
Rev.D
March 2020
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
Recommended cleaning interval
1)
Operating state
LP compressor
25 … 100 h
Engine load: 50 … 100 %
HP compressor
HP turbine stage
80 … 200 h
Engine load: 25%
LP turbine stage
LP filter silencer
2)
500 h
Engine stopped
Table 7: Maintenance intervals
1) If the recommended cleaning intervals are incompatible with operation of the engine, con-
tact ABB.
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 Tur-
bocharging 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.
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