Eliminating Malfunctions; Malfunctions When Starting; Table 21: Malfunctions When Starting - Delayed Start-Up; Table 22: Malfunctions When Starting - Vibrations - ABB HT608450 Operation Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
8 Eliminating malfunctions / 8.1 Malfunctions when starting
8

Eliminating malfunctions

8.1

Malfunctions when starting

Delayed start-up
Possible causes
Turbochar- Turbocharger contaminated
ger
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 21: Malfunctions when starting – Delayed start-up
Vibrations
Possible causes
Turbochar- Rotor unbalance
ger
Turbine or compressor damaged
Bearing damaged
Engine Vibrations from engine
Table 22: Malfunctions when starting – Vibrations
Rubbing of rotating parts
Normal behaviour, not a malfunction
Turbochar- A slight amount of uniform wear at the circumference of the rotor components
ger caused by slight local rubbing against adjacent components is permitted. This
causes the compressor or turbine blades to be somewhat shortened. To prevent
significant loss of efficiency, specific tolerances must be fulfilled.
¡
If there is any doubt about the extent of the rubbing, contact an ABB Tur-
bocharging Service Station.
¡
Have a dimension check carried out by an ABB Turbocharging Service Sta-
tion.
Table 23: Malfunctions when starting – Rubbing of rotating parts
© Copyright 2021 ABB. All rights reserved.
Remedy
Clean (see chapter
ance work →59)
Contact ABB Turbocharging Service
Station
Remedy
Contact ABB Turbocharging Service
Station
Contact enginebuilder
HZTL4032_EN
Periodic mainten-
Rev.R August 2021