Locking The Rotor - ABB TPL85-B14 Operation Manual

9.2
9.2
9.2.1
CAUTION
CAUTION
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Short-term turbocharger shut-down

Locking the rotor

Locking the rotor
Preliminary remarks
Attention must be paid to the version / design of the compressor wheel
"CV" for locking the rotor. The version / design is engraved in the com-
pressor wheel near the holes for the balancing screws.
Various intermediate rings are provided with the locking device for differ-
ent compressor wheels.
Lubricating oil supply
If overheated, components of the turbocharger can be damaged.
If gas inlet cannot be closed off, connect and switch on lubricating oil

supply without fail during engine operation with locked turbocharger.
(See section Further information about operation with locked rotor on
2-stroke engines.)
Shut off oil supply in event of lubricating oil leaking from turbo-

charger.
Checking for unbalance
Serious damage to machines and property can result from excessive
vibration and unbalance values that are too high.
Remove a locked rotor after repairing a turbocharger and check it for

unbalance.
Unscrewed balancing screws must not be screwed in again.

An exception is a test rig run up to maximum 25% engine load on new
engines with one or several turbochargers. As, in these cases, operation
with a locked rotor is only brief and the loads are low, subsequent removal
of the rotor is not necessary (if no balancing screws have been unscrewed).
Operation Manual / TPL85-B14/-B15/-B16
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9.2 Page 116