ELECTRIC MOTORS
It is advisable to have a monthly inspection of the motor operation.
Regular cleaning of the motor is necessary during its service. Care must be taken to prevent
moisture, dust, etc from entering the motor.
Ensure that adequate grease lubrication is provided for the bearings when the motor is in
operation. Grease lubricant should be in general replaced every 6 months or immediately
under the following conditions.
Lubricant grease hardened or darkened.
Accumulation of water drops, dust or dirt on the grease surface.
Overheating of the bearings.
When replacing the grease, the bearings should be cleaned and rinsed thoroughly with
gasoline or kerosene after the old grease has been cleaned out. The bearing housing should
then be filled with new grease to 2/3 of its volume. This is very important as impaired
lubrication will result from insufficient or excessive grease.
Built-in lubricating cups and grease relief holes are provided inside both end brackets Ball-
bearing motors are shipped with sufficient grease for a long operating period, if relubrication
is needed, using a low pressure hand-operated grease gun, pump in clean recommended
grease until the new grease appears at the relief hole.
DRIVE BELTS
Belts should be examined each month for tension, alignment and any signs of wear. If one
belt in a matched set is found to be damaged the whole set is to be changed.
Extreme care must be taken when tensioning belts, excessive tension will cause overloading
of bearings and cause damage to bearings, shafts & belts.
Insufficient tension will cause belts slip leading to excessive noise and belt wear.
PIVOT BASE ARRANGEMENT
SLIDE BASE ARRANGEMENT
Undo locking nut to release adjustment screw.
Rotate adjustment screw in required direction
to tension/slacken belts. (For tensioning of
belts see directions).
After adjustment re-tighten locking nut.
Adjust angle of pivot base along arms to
tension/slacken belts (For tensioning of
belts see directions).
Ensure pivot base is square with fan and
motor/fan shafts are parallel.
After adjustment re-tighten locking nuts on
both arms.
Adjustment
screw
Locking nut
Slidebase
Pivot base
Adjustment /
locking nuts
Pivot arms
