13
Figure 3: Motor Fastening
c Large-surface Washer
In order to achieve an adequately large contact surface, apply a large-
surface washer under each nut or screw head
(Fig. 3).
Î
Alternatively use flange nuts or bolts.
If the motors shaft end points up or down (vertical mounting arrangement), it
is necessary to fit an appropriate cover to prevent any foreign bodies from
dropping in the driven machine through the air inlet and outlet openings in
the ventilator hood.
Please note!
The flow of cooling air through the motor must not be limited
by said cover (
Î Section "Site", page 10).
The balance of the motors is specified on the shaft end plate and/or on the
rating plate (H = half key, F = full key, N = no key).
The design of the coupling or pulley must match the motor's balance.
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