Troubleshooting - Vents KSD 250-6E User Manual

Problem
Wrong connection to power supply.
No power supply to the terminal block.
The fan
The motor/impeller is jammed or slow.
does not get
started.
The air temperature supplied to the fan
is not sufficient to activate the
temperature and speed control module
(applicable for the models with TSC
temperature and control module).
Excessive electric current consumption
Circuit breaker
caused by a short circuit resulting
tripping during
in tripping of the circuit breaker.
the fan start.
The ventilation system components as
diffusers, grilles, air ducts are
contaminated. The fan components as
Low
the impeller or the spigot are
air flow
contaminated.
The air ducts are damaged.
The dampers or diffusers are damaged.
Contaminated fan.
Loose screw connection.
No anti-vibration mounts.
Installation of the fan on a metal
High noise
surface.
and vibration.
Loose connection of the air ducts.
Connection of rigid metal air ducts.
22
Possible Reasons

Troubleshooting

Make sure that the fan is properly connected to the power
mains and make any corrections, if required. Disconnect
the fan from power supply. Check reliability of the electric
connection in the terminal block, switch or electric outlet.
Connect the fan in compliance with the wiring diagram.
Turn the circuit breaker off. Rotate the impeller manually.
Make sure there are no foreign objects preventing
the impeller rotation.
Low set speed in the temperature and speed controller
(applicable for the models with TSC module).
The speed control knob is set to OFF position
(leftmost position). Increase speed setpoint.
Turn the fan off.
Contact the fan Seller.
Clean the ventilation system components as diffusers,
grilles, air ducts. Clean the fan components as impeller
and spigot. Make sure the ventilation system components
are not damaged and the air dampers are opened.
Clean the fan. Check the screw connection and tighten
the screws if required.
Use anti-vibration mounts for installation of the fan
(not included in the delivery set). First fasten the
mounting brackets to the fan casing and attach the
anti-vibration mounts to those. Install the fan on a
non-metallic surface.
Replace the rigid metal air ducts with the flexible air ducts.
Tighten the clamp screws to ensure proper fixation of the
air ducts.
KSD
table 4