6.3
SERVICING THE OPTIONAL BELT DRIVEN FAN AND MOTOR
!!! CAUTION !!!
All electrical work should be done by a qualified electrician in accordance with local electrical codes. Disconnect electrical power before installing or servicing any electrical component.
Periodically inspect the fan blades to ensure proper fan life. Clean the fan to remove any deposited material if required.
For motor maintenance, follow the manufacturer’s directions. If your motor re quires servicing under the motor manufacturer’s warranty, contact an authorized service center. Motors are greased at the factory and do not need lubrication at time of installation. However, regreasing may be necessary after 1000 hours of use. As a guideline, grease the motor every 3,600 hours with high grade ball and roller bearing grease. Recommended greases are Shell Dolium R or Chevron SR1#2. All bearings used are sealed, have been lubricated at the factory and do not need lubrication at the time of installation. Subsequent lubrication will be required and the motor and bearing manufacturer’s recommendations should be followed. Use the following instructions as guidelines. The fan bearings should be relubricated at six week intervals when utilized for eight- hour workday operations. The fan bearings should be relubricated more frequently if operation time is longer than eight hours per day. When lubricating, be sure to grease both bearings and use high grade medium weight ball bearing grease. It is also recommended that you consult your lubricant supplier regarding proper greases for both the motor and fan bearings. Proper grease should be based on hours of usage and environmental conditions.
If any bearing operates roughly, the unit should be shut down and the bearing replaced immediately.
6.4
BELT ADJUSTMENT AND REPLACEMENT/OPTIONAL
The belts on your new unit have been properly adjusted at the factory. However, before operating, it is suggested that belts be checked and re-adjusted if necessary. Recheck belts several times in the first days of operation and at least twice a month for the following six months. Thereafter, belts should be checked at each greasing. The drive used on this unit is equipped with banded belts and matching sheaves which transmit much higher horsepower per belt than older type belts.
Because much higher tension is required, it is advisable that the tension be checked with a tester or springs scale.
To adjust belts, loosen bolts on motor mounting plate, adjust tension screws on adjustment bracket in or out (depending on desired adjustment), then re-tighten bolts on motor mounting plate.
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