ABB HT845542 Operation Manual page 60

Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30
5 Maintenance / 5.4 Cleaning turbine blades and nozzle ring in opera-
tion
5.4.1 Wet cleaning turbine and nozzle ring during
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operation
Prerequisites for wet cleaning of turbine
The following operating state and prerequisites have been tested and
approved by ABB Turbocharging for the cleaning process:
The engine has just been started or the engine load has been reduced
u
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,
u
wait at least another 10 minutes for the charger parts to cool down.
Start cleaning cycle according to following description Wet cleaning
u
procedure.
HZTL2481_EN Rev.D March 2020