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
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deployed due to overheating, reset as follows:
1. Disconnect the power supply with the isolator
switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and
rectify the fault.
4. Reconnect the unit.
Basic setting fan speed
The fan speed when the door is open is
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adjustment depending on the loading of the
door.
Filter (W)
The distance between the coil plates in
combination with the hole diameter of
the intake grille protects against dirt and
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unnecessary.
Service, repairs and maintenance
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carry out the following:
1. Disconnect the power supply.
2. Ruwen has two service hatches that are
opened by removing the screws on the top or
bottom of the unit.
Maintenance
Since fan motors and other components are
maintenance-free, no maintenance other than
cleaning is necessary. The level of cleaning can
Connecting the water coil (W)
The installation must be carried out by an
authorised installer.
The water coil has copper tubes with
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n
to a closed water heating system. The heating
coil must not be connected to a mains pressure
water system or an open water system.
Note that the unit shall be preceded by a
regulating valve, see Frico valve kit.
Valves must be installed outside the unit.
Note that the actuator needs power supply and
control signal from the integrated PC board.
The water coil is connected on the side of the
unit via connections DN25 (1’’), internal thread.
Flexible hoses are available as accessories.
NOTE: Care must be taken when connecting
the pipes. Use a pipe wrench or a similar
tool to grip the air curtain connections to
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water leakage during connection to the water
supply pipe-work.
The connections to the heating coil must be
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w u e-
free removal. A vent valve should be connected
at a high point in the pipe system. Air valves are
not included.
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.
Vacuum the intake grille regularly from outside
when dust is visible, for example as a part of
the cleaning routine.
Replacing the water coil (W)
The coil must be replaced through the top
service hatch.
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water coil.
3. Remove the mounting screws securing the
coil in the unit and lift out.
4. Install the new coil in reverse order to the
above.
Replacing heating elements/heating
package (E)
The elements/package must be replaced
through the top service hatch.
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 heating elements/package out.
3. Install the new heating elements/package in
reverse order to the above.
Ruwen
14
EN
