4
AC32
Adjustment of the air curtain and air flow
The direction and speed of the air flow should be ad-
justed considering the load on the opening. Pressure
forces affect the air stream and make it bend inwards
into the premises (when the premises are heated and the
outdoor air is cold).
The air stream should therefore be directed outwards to
withstand the load. Generally speaking, the higher the
load, the greater the angle that is needed.
Basic setting fan speed
The fan speed when the door is open is set using the
control. Note that the air flow direction and fan speed
may need fine adjustment depending on the loading of
the door.
Filter (W)
The fan speed when the door is open is set using the
control. Note that the air flow direction and fan speed
may need fine adjustment depending on the loading of
the door.
Service, repairs and maintenance
For all service, repair and maintenance first carry out the
following:
1. Disconnect the power supply.
2. The front hatch is removed by removing the screws
on the top of the unit and then detach the bent edge
at the bottom. (Fig.3)
3. After the service, repair and maintenance reattach
the front hatch. Place the hatch at the lower edge
with the bent edge and fasten on top with screws.
4. Note that when carrying out work where the end is
removed, the outlet grille also detaches.
Maintenance
Unit with water heating
The appliance filter should be cleaned regularly to ensure
the air curtain effect and the heat emission from the
device. How often depends on local circumstances.
A clogged filter is not a risk, but the appliance function
can fail.
1. Disconnect the power supply.
2. The front hatch is removed by removing the screws
on the top of the unit and then detach the bent edge
at the bottom. (Fig.3)
3. Remove the filter and vacuum clean or wash it. If
the filter is clogged or damaged, it may need to be
changed.
All units:
Since fan motors and other components are maintenance
free, no maintenance other than cleaning is necessary.
The level of cleaning can vary depending on local condi-
tions. 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.
Overheating
The air curtain unit with electric heater is equipped with
an overheat protector. If it is deployed due to overhea-
ting, reset as follows:
1. Disconnect the electricity with the fully isolated
switch.
2. Determine the cause of overheating and rectify
the fault.
3. Remove the front hatch.
4. Press the red button located inside the air curtain
unit, at the inner gable of the connection box.
5. Reattach the front hatch and connect the unit again.
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.
Temperature control
See control pages.
