Exhausto BESF 146, Инструкция по установке и эксплуатации

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Problem
Fan is making too much noise.
Fan is vibrating and making
noise.
Fan is not working. (please refer
to Fig. 8)
Fan is getting power but will not
run.
Fan is overheating and cycling
on & off.
Probable Cause
Ducting is too small for the volume of
air.
Ducts/Filters are dirty/clogged.
Fan inlet or outlet is too close to the
customer.
Damaged during shipping or
installation.
Dirt build-up on blower wheel.
Fan and air ducts not installed with
vibration dampers.
Power is off.
Capacitor is not wired correctly.
Fan Speed Control is bad.
Blower wheel is stuck due to dirt
build-up.
Fan Speed Control is set too low.
Motor bearings have seized. (Please
refer to section 1.1 “Use”.)
Motor capacitor has failed. (Please
refer to section 1.1 “Use”.
Dirt build-up on blower wheel.
Motor capacitor has failed. (Please
refer to section 1.1 “Use”.)
Motor windings or bearings are failing.
(Please refer to section 1.1 “Use”.)
7. Troubleshooting
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What to do
Resize ducts.
Clean and inspect ducts and filters.
Relocate duct or fan.
See if blower wheel is damaged or if motor
shaft is bent. Replace if damaged.
Clean wheel.
Install vibration dampers.
Switch on power to fan.
Rewire connection.
Bypass Fan Speed Control. If fan now
operates at 100%, then replace Fan Speed
Control.
Clean blower wheel.
Set Fan Speed Control to highest setting until
fan is up to speed. Then set speed lower.
See that fan is operating within its design
parameters. Replace the motor.
Please refer to Fig. 7 and insure that
capacitor is connected correctly. Check amp
draw with and without the capacitor being
connected. If amp draw is the same, replace
capacitor.
Clean blower wheel.
Please refer to note in section above.
Check amp draw. If incorrect, replace blower
motor.