ABB TPL67-C36 - Page 66

Operation Manual / TPL67-C.. - TPL71-C..
Maintenance
5
Cleaning turbine blades and nozzle ring
in operation
5.4
Page 64
© Copyright 2016 ABB. All rights reserved.
April 2016 HZTL2488_EN Revision C
Layout of cleaning pipes
1
Water supply (fresh water only) 6
Other engine
2
Regulating valve 7
Injection nozzle
3
Manometer 8
Drain pipe
4
Air supply with 3-way valve 9
Drain cock
5
Water pipe (stainless steel) 10
Drain
G
Pipes on gas inlet casing 11
Flowmeter
Wet cleaning procedure for turbine during operation
 Meet prerequisites and operating condition requirements without fail
before cleaning.
 Make sure water supply (1) is connected, turned on and guaranteed.
 Open drain pipe (8,9) if provided.
 Switch over 3-way valve (4) from scavenging air mode to water supply.
NOTICE
Set the required volume of water on the flow meter as shown in the ta-
ble in the following chapter
Cleaning parameters
.
 After injecting required volume of water, shut off water supply again by
switching over 3-way valve (4) to scavenging air mode.
 Finish injection procedure this way.
 Close drain hole (if provided) above drain pipe (8,9).