Operation Manual / TPL76-C
10 Mothballing the turbocharger / 10.1 Taking out of operation for up
to 12 months
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HZTL2485_EN
Rev.G
March 2020
10 Mothballing the turbocharger
10.1 Taking out of operation for up to 12 months
Condition of engine lubricating oil
The turbocharger normally remains mounted on the engine. Mothballing
a turbocharger depends on the condition of the lubricating oil:
¡
If the total acid number (TAN) is lower than 2 mg KOH/g, no meas-
ures have to be taken.
¡
If the engine lubricating oil is replaced by preserving oil before taking
the engine out of operation and this is circulated by the prelubrica-
tion pump, no measures have to be taken. Any remaining old engine
oil will thus be flushed away and the bearing sections largely protec-
ted against corrosion.
Mothballing measures
If the total acid number (TAN) is greater than 2 mg KOH/g, the following
mothballing measures are necessary after taking an engine out of opera-
tion:
u
Remove turbocharger.
u
Rotor and bearing parts must be removed by an official ABB Tur-
bocharging service station and refitted afterwards.
u
Clean all parts.
u
Oil machined, bright surfaces of steel and cast parts using anticorros-
ive oil.
u
Reassemble complete turbocharger.
Rotor turns in stack draught
If the rotor turns as a result of the stack draught:
u
Install blind flange between compressor casing outlet flange and
charge air duct.
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