ABB HT599018 Operation Manual page 74

Operation Manual / A150-M56/66/57/67 - A155-M..
7 Periodic maintenance work / 7.4 Cleaning components mechanically
7.4.5 Cartridge group, general
CAUTION
Corrosion
If the cartridge group is not put back into operation immediately after clean-
ing, parts may corrode.
Immediately after cleaning, install the cartridge group and put it back
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into operation.
Compressor wheels can be heavily contaminated due to poorly filtered suction air; turbines
can be heavily contaminated due to exhaust gas residues or coked oil. Cleaning during oper-
ation may not suffice to remove such contamination; instead, it may need to be cleaned
mechanically during standard service intervals (see the Service work chapter).
Remove the turbocharger from the engine (see chapter
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Remove the cartridge group (see chapter
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First clean compressor end and then turbine end according to the following description.
7.4.6 Cleaning the cartridge group on compressor end
CAUTION
Selection of the cleaning agent
Cleaning agents which contain chlorine attack metals.
Use only pH-neutral cleaning agents which do not attack metals.
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Observe safety data sheet.
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CAUTION
Water and contamination in the cartridge group
If water or contamination penetrates the cartridge group, this can impair
the function of the turbocharger and damage parts inside the cartridge
group.
Make sure that no water or contamination can enter into the cartridge
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group.
Cleaning procedures should be selected that do not result in removal of the compressor
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wheel material or cause damage to its surfaces. Clean the compressor wheel with a rag or
soft brush which has been soaked in water with a household cleaning agent. Do not use a
wire brush!
Dry the compressor wheel and the gap between the compressor and the bearing casing
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with low-pressure pressurized air.
Lightly spray the compressor wheel and the gap between the compressor and the bearing
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casing with penetrating oil.
Dispose of dirty water and cleaning agents in accordance with the material safety data
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sheet.
© Copyright 2021 ABB. All rights reserved.
Removing and Installing
Dismantling and fitting, general
HZTL4032_EN
→29).
→85).
Rev.Q January 2021