Testing and Maintenance
AutroGuard Multicriteria Protector Series V-430, V-530, V-100, V110 and V-120,
AutroGuard-Technical-Handbook, Doc-1004339-4, 2022-12-09,
Autronica Fire and Security AS
Page 107
the number of loop units on the detection loop). Such fault messages
can simply be accepted without any further actions.
14.6 Calibrating the Cover Detection Sensor
The Cover Detection functionality is described in chapter 5.8.
The Cover Detection Sensor in AutroGuard Protectors is calibrated
during manufacturing, ensuring that “Protector covered” fault
messages will appear on the system panel only if the air inlet is
partially or completely blocked, thus preventing smoke from entering
the detection chamber.
If “Protector covered” fault messages occur when the air inlet is not
partially or completely blocked, and these unintentional faults are
permanent, the Cover Detection Sensor must be re-calibrated.
Note that intermittent occurrences of such faults will not be resolved
by following this procedure.
There are two methods (Method A and Method B) to re-calibrate the
Cover Detection Sensor if it sends unintentional/false indications.
Both methods reset the data that was stored in the AutroGuard
Protector during manufacturing.
If the Protectors are easily accessible, Method A can be used. If not,
use Method B.
14.6.1 Method A: Re-calibrating Using a Protector Cover
For this method you only need the Protector Cover (dust cap) that
came with the Autroguard. The procedure can be done during normal
operation.
1. Cover the Protector with the Protector Cover for at least 3
minutes
2. Remove the Protector Cover and wait at least 1 minute
3. Use the reset button on the panel and confirm that the fault
is gone
If the fault reappears, repeat all steps in the procedure. You can also
try to disconnect and reconnect the loop if possible.
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