ABB PT003915 - Troubleshooting; Malfunctions When Starting; Table 20: Malfunctions When Starting - Delayed Start-Up; Table 21: Malfunctions When Starting - Vibrations

Operation Manual / Power2 340-H / High-pressure stage
8 Troubleshooting / 8.1 Malfunctions when starting
© Copyright 2022 ABB. All rights reserved. HZTL4054_EN Rev.F March 2022
8 Troubleshooting
8.1 Malfunctions when starting
Delayed start-up
Possible causes Remedy
Low-pressure
or
high-pressure
stage
Pressure stage contaminated Clean
Bearing damaged Contact a Turbo Systems service sta-
tion
Rotor rubbing
Foreign object in pressure stage
Table20: 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 a Turbo Systems service sta-
tion
Turbine or compressor damaged
Bearing damaged
Table21: 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 a Turbo
Systems service station.
¡ Have a dimension check carried out by a Turbo Systems service station.
Table22: Malfunctions when starting – Rubbing of rotating parts
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