Control Keys - Detnov CMD-500 Manual Del Usuario

3.3.1 Values selector button (A).
This is used to set the CO concentration level at which to activate the extraction relay
outputs 1 and 2. It also sets the level at which the alarm relay is activated.
To select the level of extraction 1, press keys A and D once, at the same time. At this
moment the display will blink indicating the value at which extraction 1 will start up, set
to 50ppm by default. You can use keys C and D to change this value, pressing C to
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increase it and D to decrease it.
Pressing key A again, move on to extraction 2. The display will blink indicating the level
set, 100 ppm by default. Do the same as for extraction 1, pressing keys C and D.
Press key A again to move on to the alarm level, where again the display will blink with
the level to which the alarm level is programmed. You can use keys C and D to change
this level.
If there is a fault, this button will allow you to see the fault code, shown on the display.
3.3.2- Operation mode button (B).
Use the operating mode button to select how you want the extraction to work.
• OFF: Extraction stopped.
ON: Extraction running manually.
•
• AUTO: Extraction controlled automatically by the CO detection line. If one of the
detectors in the area reaches the preset level, the extraction will start. The extraction
takes 30 seconds to start up, during which time the extraction LED will blink. This
time allows you to avoid unnecessary start-ups. Once the CO levels have decreased,
the extraction will continue to function for 2 minutes. This time ensures the air in the
protected area is correctly renewed. There are two automatic operating modes, by
upper limit and by average value.
• If you press key B when the unit is in automatic mode, it will pass to "Automatic
Advanced" mode. In this operation mode the system applies decision algorithms
taking into account the value of the concentration of all the detectors in the area, thus
reducing the energy consumption of the system.

3.3- Control keys

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