Maxxair MAXXFAN Guida
Page 1 of 3
MAXXFAN
FAN BLADE REPLACEMENT INSTRUCTIONS
Parts Provided:
Fan Blade Washer, Motor Shaft
1. CAUTION: Turn off 12volt power to MaxxFan.
2. Remove insect screen by turning
(4) locking tabs to release, See photo A.
photo A photo B
3. CAUTION:The fan blade may have sharp edges!
Using a ½” wrench or an adjustable
wrench, remove locknut that holds the fan
blade to the motor shaft. Using a cloth or
paper towel to avoid sharp edges, hold the
fan blade with one hand to prevent the
motor from rotating while loosening the
nut. Turn the nut counter-clockwise to
loosen, See photo C.
photo C
4. Locate the small flat on the motor shaft, See photo D. Using an adjustable
wrench or a 9/32” open end wrench, hold the motor shaft. Tighten the adjustable
wrench on the small flat as needed. With your other hand, protected by a cloth or
paper towel, turn the fan counter-clockwise slightly to align the flat on the fan
blade hub with the flat on the motor shaft. You will feel a slight amount of play
between the fan blade and the motor shaft when the flats are properly aligned, See
photo E.
Locking
Tab
Locknut
Hold fan
b
lade Loosen
nu
t
Page 2 of 3
Photo D photo E
5. Grasp the fan blade at the center hub and gently pull it straight off of the motor
shaft, See photo F. The fan blade will be tight and there will be some resistance.
You may find it helpful to wrap your fingers around the fan blade hub, pulling,
while pressing on the end of the motor shaft with your thumbs, See photo G. Do
not apply excessive downward force on the motor mounts, See photo F.
photo F photo G
When the fan blade is removed, make sure
the small washer on the motor shaft
underneath the fan does not come off. If it
does, slide it back onto the motor shaft
before installing the new fan blade, See
photo H.
photo H
6. Locate the small metal ring on the boss of the new fan blade, See photo I. The
fan blade must be placed onto the motor shaft with the metal ring towards the
motor. Locate the small flat on the inside of the hole in the fan blade boss. This
flat must be aligned with the flat on the motor shaft to properly install the fan
blade, See photo I. Align the two flats and press the fan blade straight onto the
motor shaft until it bottoms out on the shaft washer. The fan blade will be tight
going on, make sure the flats are properly aligned before pressing the fan blade
onto the motor shaft, See photo J.
Flat on motor shaf
t
Washer must
stay on shaft
Hold
wrench
Turn fan
blade
Fan blade
hub
Motor mounts
Page 3 of 3
photo I photo J
7. Place the provided washer onto the shaft, and replace the nut onto the end of the
motor shaft, See photo K. Using a cloth or paper towel, hold the fan from turning
while tightening the nut with the ½” wrench or an adjustable wrench. Tighten the
nut fully, the end of the motor shaft should just stick through the plastic on the
end of the nut, See photo L.
photo K photo L
8. Replace the insect screen and secure with
the (4) locking tabs, See photo M.
photo M
9. Reapply the 12volt power to the MaxxFan. Turn the MaxxFan on and verify that
the fan does not wobble excessively. If the fan wobbles, the flats on the fan hub
and the motor shaft may not be properly aligned.
Metal ring, place this end
of fan on motor shaft first.
Flat in fan hole
End of shaft
just sticks
through nut
Align flats & press
fan blade straight
onto motor shaft
Place washer &
nut onto shaft.
Locking
Tab
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