Cleaning Components Mechanically; Table 16: Wet Cleaning Of Turbines, Parameters For 6-Nozzle Cleaning - ABB HT846914 Operation Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
7 Periodic maintenance work / 7.4 Cleaning components mechanically
Parameter for 6-nozzle cleaning
Product Temperature be-
fore turbine before
cleaning [°C]
A150 350 ... 430
A155 350 ... 430
Table 16: Wet cleaning of turbines, parameters for 6-nozzle cleaning
1)
Corresponds to a water pressure p
the connection point WA/WG
7.4

Cleaning components mechanically

7.4.1 Preparation
CAUTION
Component damage and corrosion
If mechanical cleaning is carried out incorrectly, this can lead to damage and
corrosion on the components.
Pay attention to the specifications in this chapter pertaining to mechan-
u
ical cleaning.
CAUTION
Selection of cleaning tools
Turbocharger components are sensitive and easily sustain mechanical dam-
age. The use of needle descalers (for example) or other striking tools dam-
ages the components. Depending on the specification, nozzle rings or tur-
bine casings may have protective coatings which can also be damaged.
Use only soft tools such as rags, brushes or wire brushes.
u
In case of heavy contamination, the cleaning methods described in this
u
chapter (such as soaking, for example) can be repeated until a satisfact-
ory result is achieved.
The disassembly and assembly of the components is described in chapter Fitting and dis-
mantling.
Contaminated water and cleaning agents must be disposed of in an environmentally
u
compatible, professional way and in compliance with locally applicable regulations.
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Maximum temperature
before turbine during
cleaning [°C]
530
530
of 2.5 bar (overpressure compared to atmosphere) at
WT
HZTL4032_EN
Water volume flow Injection time
3 1)
V [dm /min]
W
18.0
25.0
Rev.S
[min]
10
10
February 2022