The evaporative
cooler is an ingeniously simple machine. It allows the average homeowner the
opportunity to handle the routine maintenance of the unit on his own. You may
find that the motor on your evaporative cooler needs replacing. If so, there
are easy steps that you can do to replace and install a new motor in under an
hour. Follow the steps below to install an evaporative cooler motor.
1.Take off the bolts on the old motor that
are used to adjust the tension on the belt. Remove the belt, and inspect it for
wear. You may want to take this opportunity to replace the belt, as well.
2. Remove the bolt holding the motor pulley,
and pull the pulley off the motor.
3. Remove the bolts from the brackets that
attach the motor to the cooler. Your motor will be held in by these brackets,
which may swing in an arc, or slide on a track. This movement allows for the
adjustment of the belt tension.
Evaporative air cooler |
4. Attach the new motor to the brackets with
the bolts, and fasten securely.
5. Slide the motor pulley on to the new motor
shaft. Before tightening the bolts for the pulley, make sure that the motor
pulley is in direct alignment with the blower pulley, so that the belt will
track correctly when turning. Once aligned, tighten the bolts securely.
6. Slide the belt over both the motor pulley
and the blower pulley. Lift the motor along the tracks or slots to increase the
tension on the belt. The belt should be at a tension that allows you to push on
the midpoint between the pulleys and have the belt move about 1 inch. Once
properly adjusted, tighten the bolts to lock the motor in this position.
7. Refer to the instructions for the new motor
to correctly wire it. This is usually a matter of attaching the wires in the
same manner as the old motor. You have now successfully installed a new
evaporative motor.
If you have
experience replacing and adjusting belts in automobiles, take note that an evaporative cooler belt should not have anywhere near that much tension.
Putting too much tension on the belt may cause the new motor to burn out.
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