Macurco DVP-120C Manual
REV – 1.0
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When all indicators have been silenced, the display will show that unoccupied failure indications have been silenced
for four hours. After approximately 5 seconds the display will return to normal mode.
F a i l e d U S i l e n c e d
F o r 4 h o u r s
Figure 4-13 Unoccupied Failure Silenced
In normal mode, detectors with unoccupied failure silenced will display “Failed U” alternating with current gas
reading.
4.9
Occupied Failure Display
During occupied time, system compares the readings of the CM-6 and TX-6-ND detectors assigned to a zone. If the
30 minutes rolling average for any sensor in a zone is more than 15ppm (for CM-6) or 1.5ppm (for TX-6-ND) above or
below the 30-minute rolling average for other detector(s) (of same type) in the same zone, the detector has failed.
This failure is referred to as occupied failure in rest of the manual. (Refer to “Section
” for process to define occupied time.)
DVP-120C displays following message for occupied failure. If more than one detector fails for occupied time, then
display scrolls every 5 seconds period to show all failed detectors.
S e n. F a i l e d O c c.
C O S e n s o r 0 2
Figure 4-14 Occupied Sensor Failure
Occupied failure triggers alarm condition in the panel. Hence Alarm/Warning LED will be red. Buzzer, Horn and
Strobe will be energized based on Alarm Signal Configuration in CONFIGURE SIGNAL menu. Alarm due occupied
failure have lower priority than gas alarm.
If occupied failure detector is part of a zone, then relays assigned to the zone gets activated.
When the HUSH key is pressed, the internal buzzer will be silenced for 5 minutes. If the horn or strobe turn on
delays have not finished, then they will also be silenced. If the delays have finished, the HUSH key must be held for
three (3) seconds in order to silence the horn and strobe.
When all indicators have been silenced, the display will show that occupied failure indications have been silenced for
5 minutes. After approximately 5 seconds the display will return to normal mode.
F a i l e d O S i l e n c e d
F o r 5 m i n u t e s
Figure 4-15 Occupied Failure Silenced
In normal mode, detectors with occupied failure silenced will display “Failed O” alternating with current gas reading.
4.10
Calibration Due Warning Display
When there are up to 30 days until calibration for any detectors connected, panel will trigger Calibration Due
Warning. Calibration Due Warning has lower priority than gas warning. This feature is applicable only for detector
with calibration period feature.
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