Table of Contents
Advertisement
AERATION FAN – SUPER-FLOW FULL CENTRIFUGAL FAN
6. Troubleshooting
Before continuing, ensure you have completely read and understood this manual's
Safety section, in addition to the safety information in the section(s) below.
Shut down and lock out all power sources before diagnosing any of the causes or
attempting any of the solutions below.
In the following section, we have listed some causes and solutions to some of the problems you may
encounter.
If you encounter a problem that is difficult to solve, even after having read through this section, please
contact your local dealer or distributor. Before you contact them, please have this operation manual
and the serial number from your machine ready.
Fan Related Problems
Problem
Fan does not run.
Fan runs for a short
time then shuts off.
CNA-3733 R2
Cause
Blown fuse / tripped breaker.
No power at fan.
Defective wiring/connection.
Incorrect wire size.
Defective motor.
Defective magnetic starter.
Undersize wiring.
Low line voltage at fan.
Overload devices tripping.
Defective magnetic contactor.
Defective start/stop switch.
Solution
Replace fuse or reset breaker.
Turn power on at source.
Follow wiring diagram and check for
broken wires and loose connections.
Refer to wire sizing charts for correct size.
Replace if necessary.
Check contactor for proper function.
Refer to wire sizing charts for correct size.
If wire size is correct, call power company.
Let motor cool off then retry; if symptoms
persist, check amperage draw; if high,
correct, if not, thermal overload could be
tripping. Check that setting on thermal
overload matches the Full Load Amperage
(or FLA) on rating plate of motor. Adjust
the setting on the overload to match the
FLA of the motor if they are not the same.
Replace the contactor.
Replace switch.
6. TROUBLESHOOTING
27
Advertisement
Table of Contents
