ABB A140-H56 Operation Manual page 69

Operation Manual / A130-H.. - A140-H..
8 Periodic maintenance
8.3.2 Procedure for wet-cleaning the turbine
If the cleaning result is unsatisfactory or there is water leakage, contact an ABB Tur-
bocharging Service Station.
Fulfil prerequisites.

Inadmissible thermal stress and flooding of the turbine
Smaller amounts of water can lead to an inadequate cleaning result. Larger
amounts of water lead to inadmissible thermal stress on the turbine compo-
CAUTION
nents and can cause flooding of the turbine.
It is imperative that the turbine cleaning parameters be observed.

Open the stop valve and set the water volume flow V

rameters).
Close the stop valve after 10 minutes.

Wait for 10 minutes; do not change the load during this stabilisation phase.

Cleaning parameters
Product Temperature before
turbine before
cleaning [°C]
A130 350 ... 430
A135 350 ... 430
A140 350 ... 430
Table 11
Corresponds to a water pressure p
1)
Maximum turbine inlet temperature during cleaning
During cleaning, the turbine inlet temperature will rise and may strain the
material significantly. The turbine inlet temperature can be up to 100 °C hig-
CAUTION
her than the exhaust gas temperature after the cylinder. This must be taken
into account when setting the operating point before cleaning.
Do not exceed the maximum turbine inlet temperature during cleaning.

© Copyright 2013 ABB. All rights reserved.
Maximum tempera-
ture before turbine
during cleaning [°C]
530
530
530
of 1.5 bar (overpressure compared to atmosphere)
WT
HZTL2414_EN
with a flowmeter (see cleaning pa-
W
Water volume flow
V [dm /min]
3 1)
W
4.0
5.5
8.5
Revision B
Page 67 / 115
Injection time
[min]
10
10
10
March 2013