Operation Manual / Power2 850-M / 4 Product description
7 Troubleshooting / 7.1 Malfunctions when starting
© Copyright 2020 ABB. All rights reserved.
HZTL4061_EN
Rev.D
March 2020
7
Troubleshooting
7.1
Malfunctions when starting
Delayed start-up
Possible causes
Remedy
Low-pressure
or
high-pressure
stage
Pressure stage contaminated
Clean
Bearing damaged
Contact ABB Turbocharging Service
Station
Rotor rubbing
Foreign object in pressure stage
Table 16: Malfunctions when starting – Delayed start-up
Vibrations
Possible causes
Remedy
Engine
Vibrations from engine
Contact enginebuilder
Low-pressure
or
high-pressure
stage
Rotor unbalance
Contact ABB Turbocharging Service
Station
Turbine or compressor damaged
Bearing damaged
Table 17: Malfunctions when starting – Vibrations
Rubbing of rotating parts
Normal behaviour, not a malfunction
Low-pressure
or
high-pressure
stage
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 compressor or turbine blades to be somewhat shortened. To pre-
vent significant loss of efficiency, 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
7.2
Malfunctions during operation
Lubricating oil pressure too low
Possible causes
Remedy
Engine
Oil filter heavily contaminated
Clean
Oil pump in lubricating system de-
fective
Check/replace
Manometer displays incorrectly
Replace manometer
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