Commissioning; Installation; Terminal Box; Balancing And Transmission Coupling - Siemens 1LG0 Installation And Maintenance Manual

3.0 COMMISSIONING

3.1 Installation

Lifting eyes are screwed in place and must be tightened prior to and removed after motor
installation. If the motor is installed vertically with the DE shaft facing downwards, a
protective canopy is recommended to cover the fan cowling. This canopy is necessary to
prevent the ingress of water and foreign objects that may inhibit proper fan operation.
If the DE shaft is facing upwards, a protective canopy and / or suitable protective measures
must be taken to prevent liquids from entering the motor windings via the shaft.
Care must be taken to install the motor on a solid foundation so as to avoid excessive
vibration which can result in premature bearing failure.

3.2 Terminal box

Terminal box is either top or side mounted (LHS or RHS) on the motor and can be rotated
4 times by 90º thus allowing for multiple cable entry possibilities.
3.3 Balancing and coupling of transmission elements
To ensure a quiet and vibration free operation, proper angular and radial alignment of a
balanced transmission element (coupling, pulleys, fans, gear box, etc.) is essential.
As standard, the 1LG0 rotors are dynamically balanced using a half feather key as
indicated on the ratings name plate (H=Half Key).
It is necessary to replace the V-ring on DE with an oil seal when coupling a gearbox to
motors from FS80 to FS132.
• The transmission and coupling elements are required to be half-key balanced
Note:
to ensure a vibration free operation.
• Coupling and motor temperature considerations must be taken into account
during alignment of the transmission.
• Key must be removed form the motor shaft prior to starting if no transmission
is coupled.
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All work must be carried out by a skilled worker.
Before starting any work, be sure to isolate the machine
from the main and auxiliary power supply as applicable.
Mains must be secured against accidental switch on.