ABB A175-M52 - Table 19: Cleaning Parameters Wet Cleaning of Turbine and Nozzle Ring

Operation Manual / A170-M.. - A175-M..
7 Periodic maintenance / 7.5 Cleaning turbine and nozzle ring
© Copyright 2020 ABB. All rights reserved. HZTL4033_EN Rev.G December 2020
¡ The exhaust gas temperature downstream of the turbocharger drops drastically during
cleaning (typical turbocharger outlet temperatures during cleaning: 60...180°C).
¡ 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
Page 69 / 143