ABB A170-M Series - Blanking off the Inlets and Outlets; Engines with Bypass Around the Turbocharger

Operation Manual / 4 Product description / A100-M axial
9 Taking a turbocharger out of operation / 9.4 Blanking off the inlets
and outlets
© Copyright 2019 ABB. All rights reserved. HZTL4033_DE Revision C February 2019
Common air receiver
CAUTION
Excessive speeds on undamaged turbochargers
The speed limit n
Bmax
specified on the rating plate of the turbocharger must
not be exceeded. Serious damage to engine or property can be caused by
excessive speeds.
u Observe the speeds of the undamaged turbochargers.
u Reduce the engine load if necessary.
The air line must be blanked off on the engine side because the undamaged turbochargers
build up a receiver pressure.
9.4 Blanking off the inlets and outlets
The chapter is only applicable for engines with several turbochargers and joint air and ex-
haust gas receivers.
u Close the lubricating oil supply to the turbocharger.
u Blank off flange from compressor casing outlet, gas inlet and gas outlet by the installa-
tion of cover plates.
u Observe specifications from enginebuilder.
9.5 Engines with bypass around the turbocharger
The chapter only applies for engines with one turbocharger and for systems on which the
connections for a bypass have been prepared and the necessary pipe connections have been
provided.
u Close the lubricating oil supply to the turbocharger.
u Open the bypass around the turbocharger.
u Observe specifications from enginebuilder.
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