Troubleshooting; Malfunctions When Starting; Table 15 Malfunctions When Starting; Table 16 Malfunctions When Starting - Rubbing Of Rotating Parts - ABB HT574399 Operation Manual

Operation Manual / 4 Product description / A100-M axial
7

Troubleshooting

7 Troubleshooting
7.1

Malfunctions when starting

Delayed start-up
Possible causes
Turbocharger Turbocharger contaminated
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 14: Malfunctions when starting – Delayed start-up
Vibrations
Possible causes
Engine Vibrations from engine
Turbocharger Rotor unbalance
Turbine or compressor damaged
Bearing damaged
Table 15: Malfunctions when starting – Vibrations
Rubbing of rotating parts
Normal behaviour, not a malfunction
Turbocharger A minimal and uniform wear at the circumference of the rotor components caused by
slight local rubbing against adjacent components is permitted. This causes the com-
pressor or turbine blades to be somewhat shortened. To prevent significant loss of effi-
ciency, specific tolerances must be fulfilled.
 If there is any doubt about the extent of the rubbing, contact an ABB Turbocharging
Service Station.
 Have a dimension check carried out by an ABB Turbocharging Service Station.
Table 16: Malfunctions when starting – Rubbing of rotating parts
© Copyright 2016 ABB. All rights reserved.
Remedy
Clean (Periodic maintenance [➙ 37])
Contact ABB Turbocharging Service Station
Remedy
Contact enginebuilder
Contact ABB Turbocharging Service Station
HZTL4033_EN
Page 51 / 113
Revision A July 2016