Operation Manual / A170-M.. - A175-M..
7 Periodic maintenance / 7.5 Cleaning turbine and nozzle ring
© Copyright 2021 ABB. All rights reserved.
HZTL4033_EN
Rev.H
July 2021
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If there is no drainage of the gas outlet casing, the turbocharger speed and/or the gas
inlet temperature must be monitored during the cleaning process. If the load is too low,
water can collect in the gas outlet casing. Indicators for this are a sudden severe drop in
the turbocharger speed or a very large increase in the gas inlet temperature. In such
cases, the cleaning operations must be stopped and the cleaning cycle restarted with re-
duced water pressure or higher engine load.
Cleaning parameters for wet cleaning of turbine and nozzle ring
Product
Maximum temperature
when starting cleaning
T
TI
[°C]
Injection time
t
i
[min]
Water volume flow per turbocharger
1)
V
W
[dm³/min]
A170-M
430
10
30
A175-M
430
10
41
Table 19: Cleaning parameters Wet cleaning of turbine and nozzle ring
1) Water pressure p
water
as guideline value:
¡
2.3 bar when used with an axial gas inlet casing
¡
3 bar when used with a radial gas inlet casing
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