Instruction and operating guideline CO-detector
Type:
VCD2 CO-Detector
6
5. The functioning of the CO detector.
In the case of a CO
2
demand, the pump will be activated and will blow clean air
over the sensor for 2 minutes. The display will indicate 'flush'. After 2 minutes
the device will start measuring the flue gasses which will be released via the
connected CO2 fan or chimney valve. The display will indicate the word
'measurement'. There will always be some CO release at the start. The 2 minute
waiting time decreases the chance of a fault and immediate shutdown, and
leakage of these harmful compounds into the CO2 installation will be prevented.
5.1 The reaction of the CO detector to CO is as follows:
When measuring a CO concentration higher than 30 ppm.
With a CO concentration of more than 30ppm the release will cease after 1
minute and the device will be locked. The pump will flush the sensor with clean
air which will ensure that the measured level drops to 0 ppm. Pressing and
holding the OK button will display the last recorded fault in the memory showing
the last measured CO level.
Any CO fault will activate a red light and the device can be reset by pressing the
OK button.
5.2 In the case of a cable breakage and sensor malfunction.
The CO detector is safeguarded against a sensor malfunction. This works as
follows; if the input signal of the CO sensor is measured and it becomes too low,
the CO detector will go into fault mode after 1 minute. Subsequently, the fault
light comes on and the display will show 'sensor defective'.
5.3 Resetting the device
You can reset the device by pressing the OK/reset button.
When the fault keeps reoccurring, you will have to contact our Service
Department to solve this issue.
5.4 Last fault
The last device fault can be displayed by pressing and holding the OK/reset
button.
5.5 Three-way valve
The three-way valve ensures a long sensor life-span and is used to flush the
sensor with clean air.
5.6 Timer function
The device contains various timers with set times. Although they are suitable for
most applications a customer-specific adaptation is possible.
5.7 Pressure switch
The pressure switch monitors the flow over the sensor. An insufficient flow will
result in a fault and immediate shutdown. The device will be locked and the
display will read 'pump malfunction'.
