Cleaning The Compressor During Operation - ABB Turbo Systems Switzerland Power2 550-M44 Operation Manual

Operation Manual / Power2 550-M / High-pressure stage
7 Periodic maintenance / 7.2 Cleaning the compressor during operation
7.2

Cleaning the compressor during operation

7.2.1 Prerequisite
¡
The enginebuilder approves the cleaning process and its specifications are adhered to.
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Instructions from Turbo Systems are followed.
7.2.2 Introduction
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:
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Impaired compressor efficiency
¡ Higher exhaust gas temperatures
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Increased fuel consumption
¡
Increased rotor unbalance
Periodic cleaning of the compressor during operation prevents or delays any great increase
in the contamination, but never replaces the regular service work where the low and high-
pressure stages are completely dismantled and the compressors are mechanically cleaned.
Cleaning process
The compressor is cleaned during operation using the wet cleaning method. This cleaning
method is tested and approved by Turbo Systems.
Principle of wet cleaning
To clean the compressor stage during operation, water is injected before the compressor
wheel.
The water does not act as a solvent. The coating is removed by the mechanical action of the
impacting droplets. The process is particularly suitable as long as the fouling is not too ad-
vanced.
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