ABB HT575644 Operation Manual page 66

5.4.1
© Copyright 2017 ABB. All rights reserved.
Maintenance
Cleaning turbine blades and nozzle ring
in operation
Wet cleaning turbine and nozzle ring during operation
Prerequisites for wet cleaning of turbine
The following operating state and prerequisites have been tested and ap-
proved by ABB Turbo Systems for the cleaning process:
The engine has just been started or the engine load has been reduced

as far as possible (best cleaning is achieved at a load level of roughly
10 ... 15%).
As soon as the turbine inlet temperature is stable and below 430 °C,

wait at least another 10 minutes for the charger parts to cool down.
Start cleaning cycle according to following description Wet cleaning

procedure.
Operation Manual / TPL67-C.. - TPL71-C..
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5.4 Page 64