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Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30

9 Taking out of operation at short notice / 9.2 Locking the rotor

9.2 Locking the rotor

CAUTION

A locked rotor must be removed after the turbocharger repair and

checked for unbalance.

NOTICE

An exception is a test rig run up to maximum 25% engine load on new

engines with one or several turbochargers, which is sometimes reques-

ted by customers. As operation with a locked rotor is only brief in these

cases and the loads are low, subsequent removal of the rotor is not ne-

cessary.

Removed balancing screws may not be screwed in again.

NOTICE

Various intermediate rings are provided with the locking device for dif-

ferent compressor wheels. Attention must be paid to the compressor

wheel type ”CV” (for the balancing screw holes). The distance between

the locking flange (94003) and the assembly-disassembly device

(90020) must be compensated using the intermediate rings (94001

and/or 94002) depending on the compressor wheel version.

CAUTION

During operation of the engine with a locked turbocharger, the lubricat-

ing oil system must also remain connected to this turbocharger and

turned on if the gas inlet cannot be throttled. (See section Further

measures and information for operation with a locked rotor for 4-

stroke engines.) Otherwise components that are still intact can be

damaged through overheating.

Shut off the oil supply in the event of lubricating oil leaking from the

turbocharger.

Page 117 / 136

ABB TPL69-A Series User Manual

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