Cleaning Components Mechanically - ABB HT611169 Operation Manual

Operation Manual / TPL65-A32 / -A33 / -A36 + TPL69-A32 / -A33
5 Maintenance / 5.5 Cleaning components mechanically

5.5 Cleaning components mechanically

5.5.1 Introduction
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Compressor wheels can be heavily contaminated by badly filtered intake
air, as can turbines by heavy fuel oil operation or coked oil. Such contam-
ination may possibly no longer be removed through cleaning during op-
eration and must be cleaned mechanically during the standard service in-
tervals (see chapter entitled Service work).
Professional overhauling of the components by an ABB Turbocharging
Service Station is required, preferably using the cleaning method de-
scribed in the following.
CAUTION
Choosing cleaning tools
Turbocharger components are sensitive to mechanical damage. The
use of needle guns or other impact tools, for example, damages the
components. Depending on the specification, nozzle rings have pro-
tective coatings, which can also be damaged.
Only use soft tools such as scouring cloths, brushes or wire brushes.
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In the event of heavy contamination, the cleaning methods de-
u
scribed in this chapter such as soaking can be repeated until a satis-
factory result has been achieved.
The disassembly and assembly of the components is described in
chapter Fitting and dismantling.
Dispose of contaminated water and cleaning agents in an environ-
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mentally compatible manner, professionally and in accordance with
valid local regulations.
CAUTION
Risk of damage during mechanical cleaning
If mechanical cleaning is carried out too often, this can lead to damage
and corrosion on the components.
Perform mechanical cleaning, especially of the cartridge group, only
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once within the service interval.
HZTL2498_EN Rev.F December 2020