Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30
5 Maintenance / 5.4 Cleaning turbine blades and nozzle ring in opera-
tion
© Copyright 2018 . All rights reserved. HZTL2481_EN Revision C May 2018
Layout of cleaning pipes
Wet cleaning procedure for turbine during operation
u Meet prerequisites and operating state requirements without fail be-
fore cleaning!
u Make sure water supply (01) is connected, turned on and guaranteed.
u Open drain pipe (08, 09), if provided.
u Switch over 3-way valve (04) from scavenging air mode to water sup-
ply.
u Set the required volume of water on the flowmeter as shown in the
table (see table Cleaning parameters).
u Shut off the water supply again by switching the 3-way valve (04) to
scavenging air mode after injecting the required volume of water.
u The injection process has been completed.
u Close drain hole (if provided) above drain pipe (08, 09).
u After cleaning, wait with engine running for at least 10 minutes
without changing load to allow turbocharger to dry.
CAUTION
Corrosion damage to bearing casing
In order to avoid corrosion damage to the bearing casing, it is advisable
to carry out an additional 30 minutes of operation with TTE > 500°C
after the 10 minute drying time.
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