ABB HT842305 Operation Manual page 68

Operation Manual / TPL85-B14/-B15/-B16
5 Maintenance / 5.5 Cleaning turbine blades and nozzle ring in opera-
tion
Operating the dry clean-
ing device
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Before cleaning, the prerequisites Operating state for integrated dry
w
cleaning must be met.
Check that the On-Off valve (05) is closed.
u
Check that combined air valve / pressure-relief valve (07) is in pres-
u
sure relief position.
Carefully open cover cap (02).
u
Fill the specified amount of granulate into the container (01).
u
Tighten cover cap (02).
u
Open air valve (07).
u
Open ball valve (06).
u
Open On-Off valve (05) for 3 ... 4 minutes to clean turbine.
u
Close the On-Off valve (05).
u
Close the ball valve (06).
u
Set combined air valve / pressure-relief valve (07) to pressure relief
u
position.
Check whether the exhaust gas temperature after the turbine has de-
u
creased.
NOTICE
In order to optimise cleaning, it is important that the specified amount
of granulate get blown in for each cleaning operation.
The drain openings in the gas outlet casing must remain closed when
cleaning the turbine. As a result of careless handling, incompletely
burned soot particles can escape.
NOTICE
If the cleaning operation is not satisfactory, it may be repeated up to
two times.
If the cleaning result is still not satisfactory after three attempts and
the engine values are also unsatisfactory, we recommend that you have
the turbocharger inspected and cleaned by an official ABB Turbochar-
ging Service Station.
HZTL2491_EN Revision C August 2018