Commissioning / Functional Test - Elektrotechnik Schabus GX-A1+CO Gebrauchsanleitung

5. COMMISSIONING / FUNCTIONAL TEST

An electrical function test is carried out when the mains voltage is applied, then a short
initialization phase is started until the sensor is checked and the sensor self-test has been
successfully completed. The display message CO: Ready confirms the successful test.
Please note: The function test is restarted even after a brief power failure.
5.1 Alarm
As soon as an alarm level is reached and the corresponding (see table 5.5) delay time has
elapsed, both the control unit and the sensor alarm acoustically and optically. The control unit
also switches relay Re1 in the event of an alarm. The acoustic alarm can be muted by pres-
sing the TEST button (sensor) or TEST / RESET button (control unit). If the CO falls below
50 ppm, the detector resets itself.
5.2 Behavior in the event of an alarm
Ventilate the room and ensure that no further gas can escape by switching off the CO source.
Inform other people to leave the room.
5.3 Maintenance / test
Briefly press the test button on the sensor to check whether its alarm device sounds and
all LEDs work. Press the test button longer to observe how the ppm reading in the display
of the GX-A1 + rises and the GX-A1 + also issues an alarm.
Further tests, for example with test gas, are not required for a regular test.
The sensor is generally maintenance-free. Only occasionally remove coarse dirt or dust
from the device. Keep the device and the sensor away from moisture.
5.4 Display
The display constantly shows the operating status of the device. From 50 ppm CO, the
exact ppm value is also shown on the main screen (display). You can get more information
about the device by scrolling through the displays with the SERVICE button. These are
saved permanently and cannot be reset.
5.5 Alarm thresholds and delay times
DIN EN 50291 defines alarm delay times depending on the gas concentration.
CO concentration from
30 ppm
50 ppm
100 ppm
300 ppm
When developing the sensor, the shorter times were taken into account.
5.6 Malfunctions
The control unit can recognize its own technical faults and output them with an error code or
a yellow flashing LED. In addition, relay 2 switches, e.g. to inform the building management
system about it. Unplug the device for at least 1 minute and then restart it. If the error cannot
be rectified, look for the error code on one of the pages that you call up with the SERVICE
button and contact us. It can take up to a minute for the relay to switch, as the device first tries
to correct the error by internally restarting it.
For your safety, we recommend using the system
to check their function regularly!
no alarm within
120 min
60 min
10 min
-----
alarm at the latest after
-----
90 min
40 min
3 min
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