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Operation Manual / A170-M.. - A175-M..
7 Periodic maintenance / 7.4 Cleaning the compressor during operation
© Copyright 2021 ABB. All rights reserved.
HZTL4033_EN
Rev.H
July 2021
7.4.4
Wet cleaning with direct water supply
Prerequisites
On V-engines with several turbochargers per engine, parallel cleaning of both turbochargers
is recommended. This cleaning process is faster and reduces the risk of surging of the tur-
bocharger.
WARNING
Increased stress on material
During cleaning of the compressor at an engine load of 85 to 100 %, the
stress on the material of the compressor-end turbocharger parts can be in-
creased.
u
No personnel is allowed to be present in the vicinity of the turbocharger
during compressor cleaning.
u
Compressor cleaning must be activated from the engine control panel.
Wet cleaning operations for compressor with direct water supply
u
Trigger water injection according to the specifications of the enginebuilder.
u
Observe specified water pressure upstream of the connection to the turbocharger.
u
Operate engine for at least five additional minutes after cleaning.
Not more than three cleaning cycles should be conducted consecutively.
Cleaning parameters for each compressor
Product Engine load
[%]
Water pres-
sure
[bar]
Water injection
period
[s]
Cleaning interval
[h]
Ø of ori-
fice
[mm]
A170-M
50 … 100
2.5 … 4.5
10
25 … 100
2.9
A175-M
3.4
Table 17: Compressor cleaning parameters
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