Fig. 23: Turbine And Nozzle Ring Cleaning Cycle; Fig. 24: Procedure Wet Cleaning Of Turbine And Nozzle Ring - ABB HT575751 Operation Manual

Operation Manual / 4 Product description / A100-M axial
6 Periodic maintenance / 6.5 Cleaning turbine and nozzle ring
6.5.4 Wet cleaning of turbine and nozzle ring
Prerequisites
The following operating state and the following prerequisites have been tested and ap-
proved by ABB Turbo Systems for cleaning operations:
Set the engine load between 20 ... 50 % so that the turbine inlet temperature is between
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380 ... 430 °C.
Fig. 23: Turbine and nozzle ring cleaning cycle
Once the turbine inlet temperature is stable and has dropped below 430 °C, wait at least
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another 10 minutes to allow the turbine-end turbocharger parts to cool down.
Start the cleaning cycle according to the following description Wet cleaning procedure.
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Procedure
Fig. 24: Procedure Wet cleaning of turbine and nozzle ring
The prerequisites and the operating state must be fulfilled prior to cleaning.
Make sure that the water supply (01) is connected, switched on and safeguarded.
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Switch the 3-way valve (04) from scavenging air mode to water supply.
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© Copyright 2017 ABB. All rights reserved. HZTL4033_DE Revision B December 2017