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Motors, Switches, Blowers, and Fans
Maintenance free motors are used and do not require lubrication or cleaning over
their operating life. However, excessive vibration caused by damaged blower wheels
or fans can cause motor damage. Inspect wheels and fans for obstruction or damage
by running each fan individually, listening and feeling for irregularities. Replace dam-
aged wheels or fans to prevent damage to parts, fasteners, and motors.
Switches are also maintenance free; however, loose wiring connections to
switches or motors can cause excessive resistance and overheating damage. Wires
to switches can be checked or repaired by removing the switch mounting panel next
to the driver's seat.
Panels and Housings
Fasteners should be checked and tightened as necessary. A loose screw may allow
a panel to vibrate, resulting in excessive noise, more loose screws, and/or metal fa-
tigue.
Cleaning Auxiliary Fans
Auxiliary fan motor bearings are lifetime-lubricated, and do not require maintenance.
Clean the blade and guard occasionally, with a soft bristle brush and a vacuum clean-
er or compressed air, to help maintain efficiency. As with any other fan, if the blade
is damaged or unbalanced, vibration damage can occur to the motor or surrounding
components. If this is the case, the blade should be replaced immediately.
[WARNING] Do not operate a fan without the fan guard properly installed.
Procedure:
1. Remove the front half of the fan guard by gently sepa-
rating the plastic tabs with a screwdriver or other hard
instrument. Be careful not to damage the tabs, as these
connect the front half of the fan guard to the rear half.
2. To remove the fan blade, use a 3/32-inch Allen wrench in
the setscrew located directly behind the fan. This should
loosen the fan blade for removal.
3. The rear half of the fan guard can also be removed if nec-
essary. After pulling away the fan, remove the two nuts
and washers on either side of the center point and lift off
the rear piece.
CARE & MAINTENANCE
115
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