Menu Key
The
Menu
key allows access to any one of eleven menus. Pressing the
Menu
key once allows access to the first
menu function. Pressing the
Menu
key twice allows access to the second menu function, and so on. If no key is
pressed for 15 seconds in a menu window, the display will revert to the main display window.
Tip:
If you are in a
menu window and would like to remain in the window for more than 15 seconds, keep the
p
key depressed.
Enter Key
The
Enter
key, if pressed for 3 seconds, allows the modification of a setting. The enter mode is indicated by a
flashing cursor on the modifiable setting. Pressing the
Enter
key again will save any entry and move the cursor to
the next modifiable item in the display window. When the last modifiable choice in a window is confirmed with the
Enter
key, the enter mode is automatically terminated and the new settings are saved.
Filter Life LEDs:
Whenever the system is on, the colour of the filter life LEDs (light emitting diodes) indicates the
state of the in di vidual filters in the system.
Note:
The positions of the filter life LEDs on the control panel correspond
to the actual positions of the filters within the system.
The filter life indicator LEDs signal four possible stages in the life of the filter:
1. Green:
The filter is still within 80% of its estimated life span.
2. Orange:
The filter is approaching the last 20% of its estimated life span.
3. Red:
The filter has reached the end of its estimated life span.
4. Red blinking:
The filter has passed its estimated life span and should be replaced immediately. The system’s
effectiveness is likely to have been reduced dramatically, either due to a reduction in airflow
(particle filters are clogged) or a reduction in filter efficiency (gas phase filter is saturated).
Fan Speed LEDs:
These LEDs simulate the fan speed through the frequency of their rotation. The faster the rotation
of the fan speed LEDs, the faster the actual fan speed of the unit.
4.2 Control Panel Locking Function
The control panel can be locked to avoid tampering with the settings. To
lock or unlock the control panel keys, the
Menu
and the
Enter
key have
to be pressed down simultaneously for 3 seconds. The acti vated locking
function is indicated with a star symbol in the control panel display. The
locking function is cancelled by disrupting the power supply.
4.3 Fan Speed and Air Delivery
The system can be set to run at six different fan speeds which correspond to six different airflow rates. Speed 1 is the
lower, speed 6 the highest fan speed. The higher the fan speed, the more room air will be filtered by the system. The
high fan speed settings provide additional air cleaning power to deal with situations of elevated pollution levels.
To allow better evaluation of the system’s performance at different fan speeds, the standard display window shows
not only the fan speed, but also the air delivery rate (airflow). The displayed airflow is factory preset and is not
measured by the system itself.
4.3.1 Regulating Fan Speed
1.
When the system is switched off (standby mode), the first line of the LCD
display shows the model name. To switched the system on, press the
Power
key on the far left of the control panel.
2.
The LCD now displays the fan speed and the corresponding airflow rate.
Note
: The system starts at the fan speed at which it was running when it
was last used.
3.
To change the fan speed, press the
p
key.
12
Chapter 4
– Using the Control Panel
