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Addendum l AD-13
Blower Troubleshooting (continued)
Problem
Overheated bearings.
Possible cause
Too much grease.
Damaged wheel or driver.
Bent shaft.
Abnormal end thrust.
Dirt in bearings.
Solution
Remove and excess grease (see "Fan
Bearing Maintenance" [page AD-8] and
"Motor Maintenance" [page AD-9] for
lubrication instructions).
Replace the damaged wheel or driver.
Replace the motor.
Make sure all spacers and shims are in
good condition. Replace as necessary.
Clean and lubricate the bearings (see
"Fan Bearing Maintenance" [page AD-8]
and "Motor Maintenance" [page AD-9]
for lubrication instructions).