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General trouble shooting
9.1
Fan turning in wrong direction
The power phase sequence is not correct, replace the wiring again.
9.2 Popping noise is coming from the fan
Airfoil blade popping noise comes from blades that are not tightened to the specified
torque,
switch
off
power
at
VFD
control
box,
tighten
airfoil
blade
fastener
to
specified torque, if popping still occurs verify that airfoils are not contacting together;
if
airfoils
are
contacting
together;
please
contact
BloBlades at 833-BLO-FANS
9.3 Fan is Not Starting
■
Make sure that all wires are securely connected.
■
Make sure the 3 ways switch are in on position.
■
Verify the supply power is adequate and functional，contact BloBlades
833-BLO-FANS
9.4 Motor makes noise when you speed up the fan
Audible high frequency noise is normal during fan operation, if this is less than desirable,
or
you feel that the noise maybe a result of mechanical failure, please contact us at
833-BLO-FANS.
9.5
For the trouble of VFD converter, please check the problem solving approach in the user
manual of Danfoss according to the alarm message of converter.
9.6
For the trouble shooting of gearbox and motor, please follow the problem solving instruction
of
NORD manual.
