LOW VOLTAGE MOTORS - Installation, operation, maintenance and safety manual - rev. 01 - 1.07.2016
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3. INSTALLATION AND COMMISSIONING
WARNING!
Disconnect and lock out before working on the motor or the driven equipment.
3.1 General
All rating plate values must be carefully checked to ensure that the motor protection and connection will be properly done.
WARNING!
In case of motors mounted with the shaft upwards and water or liquids are expected to go down along the shaft, the user must take in account to mount
some means capable of preventing it.
Remove transport locking if employed. Turn shaft by hand to check free rotation if possible.
Motors equipped with roller bearings:
Running the motor with no radial force applied to the shaft may damage the roller bearing.
Motors equipped with angular contact bearing:
Running the motor with no axial force applied in the right direction in relation to the shaft may damage the angular contact bearing.
WARNING!
For machines with angular contact bearings the axial force must not by any means change direction.
Motors equipped with regreasing nipples:
When starting the motor for the rst time, or after long storage, apply the specied quantity of grease.
For details, see section “5.2.2 Motors with regreasable bearings“.
3.2 Insulation resistance check
Measure insulation resistance before commissioning and when winding dampness is suspected.
WARNING!
Disconnect and lock out before working on the motor or the driven equipment.
Insulation resistance, corrected to 25°C, must exceed the reference value, i.e. 100 MΩ (measured with 500 or 1000 V DC). The insulation resistance value is
halved for each 20°C rise in ambient temperature.
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