Eliminating Malfunctions; Malfunctions When Starting; Table 17 Malfunctions When Starting - Vibrations; Table 18 Malfunctions When Starting - Rubbing Of Rotating Parts - ABB A155-M57 Operation Manual

Operation Manual / 4 Product description / A150-M.. - A155-M..
7

Eliminating malfunctions

7 Eliminating malfunctions
7.1

Malfunctions when starting

Delayed start-up
Possible causes
Turbocharger Turbocharger contaminated
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 16: Malfunctions when starting – Delayed start-up
Vibrations
Possible causes
Engine Vibrations from engine
Turbocharger Rotor unbalance
Turbine or compressor damaged
Bearing damaged
Table 17: 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 18: Malfunctions when starting – Rubbing of rotating parts
© Copyright 2017 ABB. All rights reserved.
Remedy
Clean (see chapter Periodic maintenance
work [➙ 41])
Contact ABB Turbocharging Service Sta-
tion
Remedy
Contact enginebuilder
Contact ABB Turbocharging Service Sta-
tion
HZTL4032_EN
Page 59 / 120
Revision F January 2017