F3200 Operator's Manual Document No: LT0119
Operating Instructions - Brigade Functions
Page 5-8 29 July 2002 Issue 2.04
5.6 ISOLATING/DE-ISOLATING BELLS
5.6.1 FUNCTION
For a network system, refer also to Section 11.4.
The isolate status of the bells can be changed at any time during FFCIF alarm display by
pressing the "BELL ISOL" key. The status of the Bells isolation is shown on the "BELLS
ISOLATED" LED. If it is ON the bells are isolated and will not sound. If the LED is OFF
the bells will sound when an un-isolated alarm is present on any zone which is
programmed (mapped) to operate the bells. If the LED is flashing, the bells are silenced
by network silence or NZ Silence Alarms and will not sound.
Isolating the bells can serve as a method to silence the bells whilst un-isolated alarms
still exist.
De-isolating the bells allows the bells to turn on for subsequent alarms occurring, and
can serve to immediately turn the bells on again if any un-isolated zone alarm condition
exists for zones which are mapped to the bells.
5.6.2 OPERATING SEQUENCE
Press the "BELLS ISOL" key once:
- If the bells were un-isolated:
- The "BELLS ISOLATED" LED turns ON steady.
- The bells, if ON, turn OFF.
- If the bells were isolated:
- The "BELLS ISOLATED" LED turns either OFF, or
slow flashes.
- If any un-isolated alarm condition exists on a zone
mapped to the bells, then the bells turn ON, unless
the bell isolate LED is flashing.
NOTES:
If any subsequent alarm occurs, the bells will turn ON only if the bells are un-isolated.
For an NDU in New Zealand mode the Bells Isolate LED flashes (at 2Hz) if a Silence
Alarms keyswitch has been turned on, and flashes more slowly (at 1Hz)) if the Bells are
silenced by network Bells silence.
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