Vascat MAC-HS 100, Operation And Maintenance Manual

Page: 62 / 64

OPERATION AND MAINTENANCE MANUAL
MAC-HS MOTORS
PAGE: 62
CODE: CTT32 EDITION: 04 RELEASE: SEPTEMBER 2020
Subject to technical changes without prior notice
6.5.2 Mechanical faults
Fault Probable cause Corrective action
Rubbing noise
Rotating parts are rubbing together Determine the cause and readjust the parts
Foreign bodies in the motor If so, repair by manufacturer
Damage to bearings Change bearings
Excessive radial
vibrations
Rotor imbalance Uncouple rotor and rebalance it
Non-concentric rotor, shaft bent Contact factory
Non-concurrent shaft alignment Align motor-machine system.
Imbalance on coupled machine Rebalance coupled machine
Vibrations transmitted by gear Correct gear
Resonance with foundations Reinforce foundations after checking with factory
Changes to foundations Determine cause and eliminate it. Realign machine
Excessive axial
vibrations
Faulty angular alignment Align group of machines and check alignment
Blows transmitted by coupled machine Examine coupled machine
Vibrations transmitted by gear Correct gear
Resonance with foundations Reinforce foundations after checking with factory
Changes to foundations Determine cause and eliminate it. Realign machine
Table 31: Mechanical faults