BAC PCT Series Operation & Maintenance Manual page 16

NOTE: There should be no "chirp"
or "squeal" when the fan motor
is started.
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W W W . B A L T I M O R E A I R C O I L . C O M . A U
• Belt tension adjustment (if required):
1. Loosen the motor pulley guard retaining nuts.
2. Loosen the lock nuts on the Motor Base Adjusting Screws.
3. Turn the Motor Base Adjusting Screws clockwise to tension the
belt, or counterclockwise to relieve belt tension. During adjustment
of belt tension the drives should be rotated several times by hand
to evenly distribute the tension throughout the belt.
4. When the belt is properly tensioned, retighten the locking nuts
on the Motor Base Adjusting Screws.
5. Tighten guard nuts.
Note: There should be no "chirp" or "squeal" when the fan motor is started.
Adjusting
Screws
Figure 4. Adjustable Motor Base (cover removed)
Motor Base
Locking Nuts
(both sides)