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Increase Quality Through Interaction with the Field
iv. Twisted Fan- Determine if the fan is twisted (the blades should be
horizontal). You can untwist the fan by gently turning the ends so the blades
straighten out (this has eliminated ticking
v. Bent Fan-some service fans get bowed from either shipping damage or
mishandling-replace the fan
vi. Dry Motor Ball Bearings
There are a couple of ways to determine if it's the motor bearing:
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Indicators
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Although not recommended, if you choose to repack the bearings, use high-
temperature grease, not automotive axle (stinky) grease.
b. Snapping behind the switch panel. Arcing at the LED board (may or may not cause
the Status light to flicker.
If the arcing stops when the ionizer is turned off then it is always due to
residue/moisture in the cell/fan portion of the housing including the ionizer needle
and bracket. This will require a thorough washing.
Increase Quality Through Interaction with the Field
Take a long shaft screwdriver, put the blade against the bearing
housing then put your ear against the handle and listen.
Remove the fan and hear if the noise continues.
No noise (the bearing is packed (greased) well and probably on
a new unit).
Some very sporadic non-rhythmic bearing ticking only heard
using the screwdriver (normal).
Then there's the "shaking ball bearings in a cup" noise (bearing
is dry-this is probably the condition that gives you the noise of
concern).
Finally, f it sounds like gravel then the bearings are already
damaged.
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