Operation Manual / TPS48-D/E.. - TPS61-D/E..
5 Maintenance / 5.3 Turbine cleaning during operation
© Copyright 2020 . All rights reserved.
HZTL2410_EN
Rev.F
March 2020
5.3.4
Procedure for method with long water injection time
w
Prerequisites have been fulfilled.
u
Wait 10 minutes as a stabilising phase after reducing the engine load.
u
Open the shut-off valve.
u
Set the required water flow rate as specified in the table of cleaning
parameters using a flowmeter and inject for 10 minutes.
u
Close the shut-off valve.
u
Wait 10 minutes as a stabilising phase before increasing the engine
load again.
This completes the turbine cleaning process.
Cleaning parameters during the process
TPS
Temperature in
front of the tur-
bine during
cleaning
[°C]
Water
volume flow
1)
[dm
3
/min]
Injection
time
[min]
Stabilising phase
before / after wa-
ter injection
[min]
48
≤
530
4
10
10
52
5.5
57
8.5
61
12
1)
corresponds to a water pressure p
WT
of 1.5 bar (overpressure over at-
mosphere)
CAUTION
Maximum temperature in front of turbine during cleaning
When cleaning, the temperature in front of the turbine will rise and can
heavily stress the material of turbine components. The temperature at
the turbine inlet can be up to 100 °C higher than the exhaust gas tem-
perature after the cylinder. This should be taken into consideration
when setting the operating point before cleaning.
u
Don't exceed maximum temperature in front of turbine when clean-
ing.
Page
57
/
111
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