Cleaning The Compressor During Operation - ABB XAC19173 Operation Manual

Operation Manual / 4 Product description / A200-L
6 Periodic maintenance / 6.4 Cleaning the compressor during opera-
tion
6.4

Cleaning the compressor during operation

6.4.1 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 take place about every 50 hours of operation.
If the specified cleaning intervals are incompatible with operation of the engine, contact
ABB Turbo Systems.
Cleaning method and operating state
The compressor is cleaned during operation using the wet cleaning method. It is carried out
at an engine load of 25 ... 85 %.
This cleaning method is tested and approved by ABB Turbo Systems.
Principle of wet cleaning
CAUTION
Corrosion and deposits when cleaning
Salt water and cooling water treatment substances damage and adversely
affect turbocharger parts.
Never use salt water, but only pure water for cleaning.
u
To clean the compressor stage during operation, water is injected upstream of the com-
pressor wheel.
© Copyright 2018 ABB. All rights reserved. HZTL4036_EN Revision L May 2018