Document No: LT0117
F4000 LCD Operator's Manual
Operating Instructions - Brigade Functions
Issue 2.38
19 April 2002
Page 5-7
5.5
ISOLATE ACKNOWLEDGED ZONES IN ALARM
5.5.1 FUNCTION
In "FFCIF mode", pressing the "ISOLATE" key performs the following functions for all zones
in the alarm list that have been acknowledged:
(a)
ISOLATES all acknowledged zones in the alarm list.
(b)
Silences any Internal sounder condition.
(c)
If all zone alarms are isolated, ie there are no unacknowledged alarms, then the
Local Bells will turn OFF.
(d)
The acknowledged zone alarms are removed from the alarm list.
5.5.2 OPERATING
SEQUENCE
Press "ISO" key once:
-
The acknowledged zones in the alarm list will be isolated -
shown by the corresponding amber "ISO" LED indicator
turning ON.
-
The Local bells (if any) will be silenced so long as all alarms
are isolated, ie there are no unacknowledged alarms.
-
The Sounder will be silenced.
NOTES:
(a)
Subsequent non-isolated zone ALARMS on the system will re-operate the alarm
indications, alarm sounder and local bells.
(b)
Subsequent non-isolated zone FAULTS on the system will operate the fault
indication and steady fault sounder.
(c)
To DE-ISOLATE alarm zones, FFCIF mode must be exited, and the zone selected
for de-isolation. Refer to the "Exiting FFCIF mode" section in this chapter, and the
"Zone Isolating / De-Isolating" section in Chapter 7 "Operating Instructions - Zone
Functions".
(d)
If the LCD is in FFCIF Type 2 mode, all alarms will be automatically acknowledged
and then isolated, i.e. it is not necessary that the zone(s) be previously
acknowledged.
