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
Cleaning the compressor during operation
7.4.1
Introduction
Approval by enginebuilder
The following instructions for wet cleaning only apply to cleaning with pure water and under
the precondition that the enginebuilder approves the process.
General
The contamination of the compressor stage (compressor wheel and diffuser) depends on
the degree of purity of the sucked-in air.
Deposits can form in the flow channels if salt, oil mist or dust are sucked in with the air.
Consequences of contamination:
¡
Impaired compressor efficiency
¡
Higher exhaust gas temperatures
¡
Increased fuel consumption
¡
Increased rotor unbalance
Periodic cleaning of the compressor during operation prevents or delays any major increase
in contamination. But it never replaces the regular service work where the turbocharger is
completely dismantled and the compressor is mechanically cleaned.
7.4.2
Cleaning interval
The time period between the periodical cleaning cycles depends greatly on the operating
conditions. Cleaning should normally be done every 25 … 100 hours of operation.
If the specified cleaning intervals are incompatible with operation of the engine, contact
ABB.
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