25
SERVICE
The motors used in the Airstream Aspirator units are all
standard NEMA frame motors and are specially designed
for use in crop drying applications. Most replacement
parts for these motors are handled by authorized service
centers of the various motor manufacturers. Remember
these important points when servicing an electric fan.
1.
Always disconnect and lock out power BEFORE
working on or around fan motor and electrical
components.
2.
Malfunctioning electrical components should be
checked by a qualified electrician.
3.
For extra motor life, any electric motor should be run
once a month for 30 minutes. This will help eliminate any
damaging moisture build-up in the motor and bearings.
4.
If excess vibrations show up at some point when the
fan has been running smoothly, check the blade for these
possible conditions.
A.
Fans setting idle in the summer offer an
excellent place for mud dobbers to build their
nests. A mud dobber nest on the back of the fan
blade will cause the fan to be out of balance and
vibrate.
B.
Mice have been known to nest in the back of a
blade. When the fan is started, the centrifugal
force kills the mouse and throws the blade out of
balance.
NOTE: Hub bolt torque requirement for fan blade.
3 hp fan blade............63 ft lbs. (Trantorque)