Operation Manual / A200-L
7 Periodic maintenance / 7.4 Cleaning the compressor during operation
© Copyright 2021 ABB. All rights reserved. HZTL4036_EN Rev.T December 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.
The contamination of the compressor stage (compressor wheel, wall insert and diffuser) de-
pends on the degree of purity of the air that is sucked in.
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.
Cleaning interval
The interval between the cleaning cycles depends greatly on the operating conditions.
Cleaning should normally be carried out every 50 hours of operation.
If the specified cleaning interval is incompatible with operation of the engine, contact ABB
Turbocharging.
Cleaning method and operating state
The compressor is cleaned during operation using the wet cleaning method. This cleaning
method is tested and approved by ABB Turbocharging.
When undertaking wet cleaning, the following operating state must be ensured:
¡ engine load between 25…85%.
¡ If the engine compartment temperature is below 0°C when wet cleaning the compressor,
precautionary measures should be taken to prevent ice from forming.
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