FRICO AR320E18 - Инструкция по эксплуатации - Страница 28

AR 300 E/W

27

GB  

Connecting the water coil (AR300W)

The installation must be carried out by an 
authorised installer.

The water coil has copper tubes with 

aluminium ins and is suitable for connection 
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 for instance Frico valve 
kit. 

To access the connections (DN20, 3/4”, 

inside thread) the service hatch and intake 
grille must be opened. The water coil is 
connected inside the unit through holes which 
are made (during installation) on the upper 
side or through the side of the unit, possible 
places are marked with punch marks.

The connections to the heating coil must be 

equipped with shut off valves to allow problem 
free removal.

Adjustment of the air curtain and air low

The direction and speed of the air low should 
be adjusted 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 speed control. Note that the air low 
direction and speed may need ine adjustment 
depending on the loading of the door.

Filter (AR300W)

The heat coil in distance, in combination 
with the hole diameter of the intake grille, 
protects against dirt and blockage and makes 
a separate ilter unnecessary.

Service, repairs and maintenance

For all service, repair and maintenance irst 
carry out the following:
1. Disconnect the power supply. 
2. The service hatch is opened by loosening 

the snap ixings located on the down side 
(turn 90°). See ig. 3.

3. After service, repairs and maintenance 

close the service hatch and make sure that 
the snap ixings lock properly.

Maintenance

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 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.

Overheating

The air curtain unit with electric heater is 
equipped with an overheat protector. If it is 
deployed due to overheating, reset as follows:
1. Disconnect the electricity with the fully 

isolated switch.

2. Allow the electrical coil to cool.
3. Determine the cause of overheating and 

rectify the fault.

Reset is performed as follows:
1. Locate the red button inside the air curtain 

unit. It is visible and accessible by opening 
of  the service hatch and inlet grille. The 
button is on the left side seen from inside 
the room looking out. On the 2 metre 
variant, two red buttons are installed in the 
middle of the unit. 

2. Press the red button until a click is heard.
3. Connect the air curtain 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.

Fan replacement

1. Determine which of the fans is not 

functioning.