16
If motors are to be stored for a long period of time, these surfaces should be
checked and “touched up” if necessary.
3.4
Flameproof joints are protected with anti rust coating (MOBILPOLYREX or
other equivalent recommended by WEGeuro). These surfaces shall be
periodically checked and a “touched up” or a new protection coat shall be
applied if necessary, mainly on terminal box joints if they are already opened.
3.5
For long storage periods is recommended that the rotor shafts should be turned
periodically to prevent bearings deterioration.
3.6
If motors are fitted with anti-condensation heaters, these should be connected
during storage.
3.7
The lifting of the motor shall be made by using the eyebolts as shown in the
picture:
4. INSTALLATION
4.1
The rotors of the motors are dynamically balanced with
half key
. For this
reason the coupling to be fitted to the motor shaft end also has to be balanced
with
half key
, according to the standard IEC 60034-14. When requested
specifically the rotors could be balanced with full key.
4.2
To fit the coupling on the shaft end extension, the coupling should be heated up
to approximately 80ºC.
If necessary, this assembly operation can be aided by means of a screw in the
threaded hole of the shaft end.
Note – Never assemble the coupling by hitting, as it could cause serious damage to
bearings.
4.3
In the case of direct coupling the motor and the driven machine shall be aligned
according to the parallel and angular alignment values established by the
coupling manufacturer, not forgetting that the more precise the alignment, the
longer will be the life of the bearings.
