Cleaning Components Mechanically - ABB A130-M56 Operation Manual

Operation Manual / 4 Product description / A130-M.. - A145-M..
6 Periodic maintenance
Inadmissible thermal stress and flooding of the turbine
Smaller amounts of water can lead to an inadequate cleaning result. Larger
amounts of water lead to inadmissible thermal stress on the turbine
CAUTION
components and can cause flooding of the turbine.
It is imperative that turbine cleaning parameters are observed.

Fulfil prerequisites.

Open the stop valve and set the water volume flow V

parameters).
Close the stop valve after 10 minutes.

Wait for 10 minutes; do not change the load during this stabilisation phase.

Cleaning parameters
Product Temperature before
turbine before
cleaning [°C]
A130 350 ... 430
A135 350 ... 430
A140 350 ... 430
A145 350 ... 430
Table 11
Corresponds to a water pressure p
1)
6.4

Cleaning components mechanically

6.4.1 Introduction
Selection of cleaning tools
Turbocharger components are sensitive and easily sustain mechanical
damage. The use of needle descalers (for example) or other striking tools
CAUTION
damages the components. Depending on the specification, nozzle rings or
turbine casings may have protective coatings which can also be damaged.
Use only soft tools such as rags, brushes or wire brushes.

In case of heavy contamination, the described cleaning methods (such as

soaking, for example) can be applied repeatedly until a satisfactory result
is achieved.
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Maximum
temperature before
turbine during
cleaning [°C]
530
530
530
530
of 1.5 bar (overpressure compared to atmosphere)
WT
HZTL4031_EN
with a flowmeter (see cleaning
W
Water volume flow
V [dm /min]
3 1)
W
4.0
5.5
8.5
12.0
Revision B
Page 52 / 103
Injection time
[min]
10
10
10
10
October 2014