Mark EASYAIR, Technical Manual

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The controller is equipped with an automatic after run function that assures the removal of any
heat remaining due to thermal inertia after switching off the air curtain. If the air curtain reaches
an abnormal high temperature (for example due to dust accumulation on the inlet grill) the fan
speed will be increased and the heating capacity decreased. In this situation the controller will
show flashing LED’s. When the temperature is normal all settings will return to their original
selected positions. If the air curtain is installed in a relatively small space then a room thermostat
is recommended.
Positioning the outlet vanes [4]
The vane’s can be adjusted in an inwards or outwards angle of 10° or 15° and in the vertical
position. For the best results the vane’s should be adjusted in a outwards position during
wintertime and in a inwards position during summertime in combination with an air
conditioned environment. It is recommended to adjust the vane in the 10° outward position
when the distance between the air curtain and the door is 30 cm or less. When the distance
between the air curtain and the door is more than 30 cm, it is recommended to adjust the
vane in the 15° outward position.
Maintenance
An Mark air curtain does not need any kind of maintenance except regular cleaning. No
dismantling is needed for cleaning. The inlet grill with micro holes acts as an filter as well. Check
the inlet filter grill for obstructions and clean if necessary. The check period may be weekly (for
high people traffic and high air pollution) or till monthly (for low people traffic and moderate
air pollution). In air conditioned environments a monthly check should be adequate but more
regular checks should be made immediately following installation. Clean the inlet grill with one of
the following methods:
– Wipe off dust with a dry cloth.
– Vacuum off dust using a dry vacuum cleaner with a brush attachment.
– Where the dust build up is very thick it may be necessary to use a soft brush.
Clean the casing by using a slightly moist cloth and a mild cleaning detergent is necessary.
Never use any scratching, etching or acid detergents.
Never clean the air curtains interior with water or steam.
The recommended maintenance must be carried out as neglect may result in air starvation and
strain the fans. Neglect may invalidate the warranty!
Attention! Only use water or non-aggressive detergents to clean the casing.
Never use liquids or steam for cleaning internal parts and components.
In case of failure
Clean the inlet grill of any dust build up (see Maintenance above). Check if the hot water
system is on and the piping is warm. Check the condition of the circuit breakers. Set the air
curtain in the highest fan position by pressing the buttons on the controller. Contact your Mark
representative if the above did not help.
!