ABB HT842305 Operation Manual page 64

Operation Manual / TPL85-B14/-B15/-B16
5 Maintenance / 5.5 Cleaning turbine blades and nozzle ring in opera-
tion
Operating the wet clean-
ing system
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Wet cleaning
1Water supply (fresh water only)
2Regulating valve
3Manometer
5Stainless-steel piping
6Other turbochargers
7Injection nozzle item 7a or 7b
Before cleaning, the Operating state prerequisites for wet cleaning
w
must be met.
Check that the water supply (1) is open and safeguarded and that it is
u
also connected to the regulating valve (2) before the turbocharger.
Set drain cock (9) of drain pipe (8) on gas outlet casing to Position 1
u
and check whether exhaust gas escapes.
Quickly open regulating valve (2) until manometer (3) indicates follow-
u
ing pressure: injection nozzle (7a) 1 ± 0.2 bar or injection nozzle (7b)
3 ... 3.5 bar.
Inject water for 5 minutes (injection nozzle 7a) or 10 minutes (injec-
u
tion nozzle 7b) at constant engine output.
Check whether the exhaust gas temperature decreases following the
u
turbine.
Close regulating valve (2).
u
HZTL2491_EN
8Drain pipe
9Drain cock
10Drain
11Orifice (integrated into tur-
bocharger)
21Air line from the compressor
casing
APosition 1
BPosition 2
Revision C August 2018