Operation Manual / Power2 850-M / 4 Product description
6 Periodic maintenance / 6.2 Cleaning the compressor during opera-
tion
© Copyright 2020 ABB. All rights reserved.
HZTL4061_EN
Rev.D
March 2020
6.2.3
Wet cleaning with direct water supply
Prerequisites
Do not clean the compressors of the different high and low-pressure stages at the same
time, but one after the other.
On V-engines with several low-pressure and/or high-pressure stages per engine, ABB Tur-
bocharging recommends the parallel cleaning of the LP compressors as well as the parallel
cleaning of the HP compressors. This cleaning process is faster and reduces the risk of sur-
ging of the low-pressure and high-pressure stages.
Wet cleaning operations for compressor with direct water supply
u
Trigger water injection according to the instructions of the enginebuilder.
u
Observe water pressure before connection to pressure stage.
u
Operate engine for at least five additional minutes after cleaning.
The cleaning process can be repeated up to three times.
The success of the cleaning can be recognised based on the charging pressure or the ex-
haust gas temperature.
If the cleaning is still unsuccessful after three processes and the engine values are unsatis-
factory, it is recommended to have the low-pressure and / or high-pressure stage checked
and cleaned by an ABB Turbocharging Service Station.
Cleaning parameters for each compressor
Power2
Engine load
Water pressure
[bar]
Water injection time
[s]
850 LP
50 … 100 %
3
10
Table 8: Cleaning parameters Power2 LP
Power2
Engine load
Water pressure
[bar]
Water injection time
[s]
850 HP
50 … 100 %
p
VE
* + 3
10
Table 9: Cleaning parameters Power2 HP
* Compressor inlet pressure depending on the operating point
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