ABB A255-L - Taking Defective Turbochargers out of Operation; Table 47: Bypass Procedure

Operation Manual / A200-L
10 Taking a turbocharger out of operation / 10.2 Taking defective tur-
bochargers out of operation
© Copyright 2021 ABB. All rights reserved. HZTL4036_EN Rev.T December 2021
CAUTION
Machine damage due to overheating
Serious damage to engine or property can be caused by the overheating of
intact turbocharger components.
u If there is a lubricating oil leak on the turbocharger, stop the oil supply.
10.2 Taking defective turbochargers out of operation
In the event of turbocharger damage, the turbocharger must be taken out of operation. In
order to ensure that the engine can continue operation as quickly as possible, observe the
following instructions.
10.2.1 Procedure with one turbocharger installed per engine
u Stop the engine.
u Close off oil supply to defective turbocharger.
u Dismantle filter silencer (see chapter Dismantling the filter silencer →78).
u Lock rotor with locking device (see chapter Locking the rotor →112)
Version Procedure
With bypass Open bypass
(see chapter Engines with bypass around the turbocharger →113)
Without bypass If necessary, remove the nozzle ring
(see chapter Engines without bypass around the turbocharger
→114)
Table47: Bypass procedure
u Continue to operate engine in accordance with enginebuilder's instructions. Observe the
prescribed power reduction.
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