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S
Y M P T O M
Excessive Noise
Fan Inoperative
Insufficient Airflow
Excessive Vibration
Motor Overheats and Nuisance Trips
PNEG 1433
T
R O U B L E S H O O T I N G
P
C
R O B A B L E
A U S E
Defective motor bearing
Defective pillow block bearing
Parts are not securely anchored
Damaged fan blade
Electricity is turned off
Belt is broken
Defective motor
Open power supply circuit
Intake/exhaust shutter is jammed/clogged
Inlet/outlet guards clogged by dirt/debris
Voltage supplied is not correct (must be
within + or – 10% of the nominal voltage)
Fan blade has excessive dirt build-up
Motor/driveshaft is bent
Fan blade is bent or otherwise damaged
Intake/exhaust shutter is jammed/clogged
Inlet/outlet guards clogged by dirt/debris
Motor has excessive dirt build-up
Fan blade has excessive dirt build-up
Building operating static pressure too high
Power supply voltage is too low
54" Galvanized Slant Wall Fan Installation Operation Manual
G
U I D E
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)
C
S
O R R E C T I V E
Replace
Replace
Check all bolts, screws, and fasteners.
De-energize fan. Turn prop, and check tip
clearance. Do they appear to be
approximately the same? (Note: They can be
a little different without any problems.) If they
are significantly different, contact your
distributor for more information.
Contact local utility supplier.
Replace
Replace
Replace fuse or reset circuit breaker. Check
for disconnected, cut, or damaged power cord
Repair/replace/clean as necessary
Repair/replace/clean as necessary
Check line voltage at motor, verify wiring.
Check with local utility supplier for possible
line problems
Clean unit
Replace
Replace blade. Recoat shaft with anti-seize
lubricant
Repair/replace/clean as necessary
Repair/replace/clean as necessary
Clean unit
Clean unit
Adjust air inlets to lower static pressure
Check line voltage at motor, verify wiring is of
sufficient gage for load and length of
conductor. Check with local utility supplier for
possible line problems.
A
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C T I O N
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