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maintenance-free, no maintenance other than
cleaning is necessary. The level of cleaning can
vary depending on local conditions. Undertake
cleaning at least twice a year. Inlet and exhaust
grilles, impeller and elements can be vacuum
cleaned or wiped using a damp cloth. Use a
brush when vacuuming to prevent damaging
sensitive parts. Avoid the use of strong alkaline
or acidic cleaning agents.
Temperature control
Temperature control of FC maintains the
exhaust temperature. Should the temperature
exceed the preset value, the overheating alarm
will activate. For more information see the FC
manual.
Overheating
The air curtain unit with electrical heating is
equipped with an overheat protection. If it is
deployed due to overheating, reset as follows:
1. Disconnect the power supply with the isolator
switch.
2. Determine the cause of overheating and
rectify the fault.
3. Open the service hatch. Locate the red button
next to the terminal box inside the air curtain.
4. Press the red button until a click is heard.
5. Reconnect the unit.
All motors are equipped with an integral
thermal safety cut-out. This will operate,
stopping the air curtain should the motor
temperature rise too high. The cut-out
will automatically reset when the motor
temperature has returned to within the motor's
operating limits.
Replacing heating elements/heating
package (E)
1. Mark and disconnect the cables to the
heating elements/package
2. Remove the mounting screws securing the
heating elements/package in the unit and lift
the heaging elements/package out.
3. Install the new heating elements/package in
reverse order to the above.
Replacing the water coil (W)
1. Shut off the water supply to the unit.
2. Open the vent valve.
3. Open the drain valve.
4. When the water coil is empty, disconnect its
connections.
16
Arden 3200
5. Remove the covering plate.
6. Remove the mounting screws securing the
coil in the unit and lift out.
7. Move the filter to the new unit.
8. Install the new coil in reverse order to the
above.
Draining the water coil (W)
The drain valve is on the underside of the coil
on the connector side. It can be accessed via
the service hatch.
Replacing motor or impeller
1. Remove frame and side panel.
2. Remove the screw between motor and fan.
3. Disconnect the cables to the motor.
4. Remove the screws securing the motor and
lift it out together with the impeller.
5. Install the new motor and/or the new
impeller as above in reverse order.
Replacing the PC board
1. The PC board is located in the terminal box.
2. Mark and disconnect the cables to the PC
board.
3. Remove the screws securing the board and
lift out.
4. Install the new PC board as above in reverse
order.
Troubleshooting
If the fans are not running or do not perform
properly, check the following:
• The power supply.
• That the intake grille/filter is not dirty.
• That the motor's safety cut-out has not been
deployed.
• Functions and settings of the FC control
system, see the FC manual.
If there is no heat, check the following:
• Functions and settings of the FC control
system, see the FC manual.
For units with electrical heating, also check the
following:
• Power supply to electric heater coil; check
fuses and circuit-breaker (if any).
• That the overheat protection has not been
deployed.
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