Locking The Rotor - ABB HT842305 Operation Manual

Operation Manual / TPL85-B14/-B15/-B16
9 Short-term turbocharger shut-down / 9.2 Locking the rotor

9.2 Locking the rotor

9.2.1 Preliminary remarks
© Copyright 2018 . All rights reserved.
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 dif-
ferent compressor wheels.
CAUTION
Lubricating oil supply
If overheated, components of the turbocharger can be damaged.
If gas inlet cannot be closed off, connect and switch on lubricating
u
oil supply without fail during engine operation with locked tur-
bocharger. (See section Further information about operation with
locked rotor on 2-stroke engines.)
Shut off oil supply in event of lubricating oil leaking from turbochar-
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ger.
CAUTION
Checking for unbalance
Serious damage to machines and property can result from excessive vi-
bration and unbalance values that are too high.
Remove a locked rotor after repairing a turbocharger and check it for
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unbalance.
Unscrewed balancing screws must not be screwed in again.
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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 re-
moval of the rotor is not necessary (if no balancing screws have been un-
screwed).
HZTL2491_EN Revision C August 2018