Mothballing Turbocharger; Taking Out Of Operation For Up To 12 Months - ABB HT581466 Operation Manual

Operation Manual / TPL67-C.. - TPL71-C..
10 Mothballing turbocharger / 10.1 Taking out of operation for up to
12 months

10 Mothballing turbocharger

10.1 Taking out of operation for up to 12 months

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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:
Remove turbocharger.
u
Rotor and bearing parts must be removed by an official ABB Tur-
u
bocharging service station and refitted afterwards.
Clean all parts.
u
Oil machined, bright surfaces of steel and cast parts using anticorros-
u
ive oil.
Reassemble complete turbocharger.
u
Rotor turns in stack draught
If the rotor turns as a result of the stack draught:
Install blind flange between compressor casing outlet flange and
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charge air duct.
HZTL2488_EN Revision E August 2018