Industrial Exhaust Blower
10
Problem
Probable cause
Solution
Low fan air volume
Fan rotation is incorrect.
Reverse motor polarity.
Obstacle / debris in
ductwork or fan impeller
Check if hose or inlet is plugged.
Remove debris or obstacle.
The fan is vibrating
Unbalanced fan impeller.
Worn or damaged bearings.
Balance the fan to Amca class G 6.3 or re
place with a new one. Replace the bearings.
Check for obstruction.
Loose bolts on motor
plate or of whole fan attachment.
Tighten the bolts.
The fan makes noise
Loose or damaged motor bearings. Replace the bearings.
Debris jammed in impeller.
Remove debris, clean up and inspect
for damage, balance or replace if needed.
12 TROUBLESHOOTING
