ABB Power2 850-M16, Operation Manual

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Operation Manual / Power2 800-M / 4 Product description
6 Periodic maintenance Page 27 / 59
© Copyright 2016 ABB. All rights reserved. HZTL4061_EN Revision A September 2016
6.2.2 Principle of wet cleaning
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 contamination is not too
advanced.
CAUTION
Corrosion and deposits when cleaning
Salt water and cooling water treatment substances damage and adversely
affect parts of the low-pressure and high-pressure stage.

Never use salt water, but only pure water for cleaning.
CAUTION
Volume of water
Uncontrolled volumes of water can damage the pressure stages and the
engine.

Never connect the water line without the orifice specified for the low-
pressure and high-pressure stages.
Compressor pumps
Should repeated surging of the compressor stage occur during compressor cleaning, first the
cleaning parameters (water flow rate) as well as the engine-side system must be checked with
regard to deviations (e.g. an increased pressure loss in the charge air cooler) and corrected if
necessary.
If surging of the compressor stage continues to occur during compressor cleaning despite
correct settings, this can be remedied by reducing the engine load further during cleaning of
the compressor after consulting an ABB Turbocharging Service Station. The reduction of the
engine load can lead to a reduction in the effectiveness of the compressor cleaning.