Document: LT0439 Vigilant
MX1-Au
Operator Manual
Issue 1.73
23 October 2018
Page 2-7
Press
OK
to confirm the reset command.
While the alarm
is being reset, “Resetting” will be shown on the LCD.
If the particular zone in alarm is reset successfully, the alarm will
disappear from the display and the alarm count will reduce by one.
If one or more detectors or devices in the zone are still active, the zone
alarm state will not reset. At the end of the reset period, any points still in
the alarm condition will be re-annunciated as new alarms.
Disabling a zone or point stops its state from affecting the system.
When a zone is disabled, it cannot put the system into alarm or fault, nor
can an existing alarm or fault on the zone cause outputs to operate.
If the LCD is showing the alarm list, i.e., the first alarm on the top 2 lines
and any subsequent alarm on the next two lines, pressing
DISABLE
will
show “Disabling Alarms…” and then disable all alarms (including any
other alarms if the Several Alarms indicator is lit) in the alarm list.
This operation will disable the zone(s) or disable the points in alarm that
map to the zone(s) in the alarm list depending on system configuration.
If the
MX1
remains in alarm after the Disable is done (i.e., points in alarm
were disabled), press
RESET
again to fully reset the zone and clear the
MX1
from the alarm condition.
Press
F1
for the first alarm or scroll the display with
NEXT
until the
required zone alarm is shown on the bottom two lines of the display.
Then press
F3
to select that zone.
Press
DISABLE
.
Press
OK
to confirm the disable command.
When the particular zone is disabled, the alarm will disappear from the
display, and the alarm count will reduce by one.
Refer to Chapter 3
, “Managing Faults and Disables”, for details on how to
enable zones that have been disabled.
The Alarm Investigation Facility (AIF) provides for a programmed delay
between the annunciation of alarm on the LCD and activation of the
alarm devices and fire brigade alarm routing outputs. This delay allows a
suitably trained operator time to acknowledge the alarm and then
investigate the situation and reset any nuisance alarms.
AIF may be enabled (Attended Mode) when a suitably trained operator is
in attendance and disabled (unattended) when there is no-one qualified
If an Alarm Will
Not Reset
Disabling Alarms in the Alarm List
Disabling All
Alarms in the
Alarm List
Disabling an
Individual
Alarm
Enabling
Disabled Zones
Alarm Investigation Facility (AIF)
