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