ABB HT570679 - Page 79

Operation Manual / 4 Product description / A150-M.. - A155-M..
6
Periodic maintenance work
Page 49 /
120
© Copyright 2017 ABB. All rights reserved.
HZTL4032_EN
Revision F
January 2017
CAUTION
Maximum temperature at turbine inlet during cleaning
During cleaning, the temperature at the turbine inlet will rise and may strain
the material significantly.
 Make sure the maximum temperature at the turbine inlet is not exceeded
during cleaning.
Figure 21: Carrying out wet cleaning of turbines
 Fulfil prerequisites.
 Ensure that the water supply (01) is guaranteed.
 Open the stop valve (02) and set the water volume flow V
W
with a flowmeter (03) (see
cleaning parameters).
 Close the stop valve (02) after 10 minutes.
 Wait for 10 minutes; do not change the load during this stabilisation phase.
If the cleaning result is unsatisfactory or there is water leakage, contact an ABB Turbocharg-
ing Service Station.
Product
Temperature before
turbine before clean-
ing [°C]
Maximum tempera-
ture before turbine
during cleaning [°C]
Water volume flow
V
W
[dm
3
/min]
1)
Injection time
[min]
A150 350 ... 430 530 14.0 10
A155
350 ... 430
530
19.0
10
Table 13: Wet cleaning of turbines, parameters for 1-nozzle cleaning
1)
Corresponds to a water pressure p
WT
of 1.5 bar (overpressure compared to atmosphere)
before the cleaning nozzle
Product
Temperature before
turbine before clean-
ing [°C]
Maximum tempera-
ture before turbine
during cleaning [°C]
Water volume flow
V
W
[dm
3
/min]
1)
Injection time
[min]
A150 350 ... 430 530 18.0 10
A155 350 ... 430 530 25.0 10
Table 14: Wet cleaning of turbines, parameters for 6-nozzle cleaning
1)
Corresponds to a water pressure p
WT
of 2.5 bar (overpressure compared to atmosphere) at
the connection point WA/WG