Operating instructions

e1955
11.1999
18
Siemens Building Technologies
Cerberus Division
Detector zone, temporary isolation
What is ISOLATION of a ZONE ?
Isolated zones have the following characteristics:
The zone state (alarm and fault) is evaluated and displayed
Alarms on isolated zones do NOT activate any control outputs (e.g. warning system, external bell, extinguish-
ing, remote transmission)
Isolated alarms are identified by the text ’ISOL’
When does a ZONE have to be isolated ?
If zones are NOT in alarm
ZONES equipped with automatic fire detectors or manual call points can be temporarily isolated. This is only
necessary in exceptional situations, for example while major construction is in progress:
ZONE with smoke detectors  if smoke or dust is produced by unusual work
ZONE with heat detectors  if heat or steam is produced by unusual work
ZONE with manual call point  if there is a possibility of inadvertent actuation
As soon as conditions have returned to normal, ISOLATED ZONES must immediately be de–isolated again.
If zones are in alarm
If zones in alarm cannot be reset because they still detect an alarm condition (e.g. smoke) then they can be iso-
lated.
As soon as conditions have returned to normal, ISOLATED ZONES must be immediately switched on again.
ZONE isolation procedure if zone is NOT on alarm (Example ZONE ’fire’)
1. Press
F2
Ü The MAIN MENU is displayed
2. Press
ok
Ü The AREAS overview is displayed
Press
to select the desired AREA
3. Press
ok
Ü The SECTIONS overview is displayed
Press
to select the desired SECTION
4. Press
ok
Ü The ZONES overview is displayed
Press
to select the desired ZONE
Ü continued on next page
MAIN MENU
FIRE detection
EXTINGUISHING sections
CONTROL in- /outputs
GEOGRAPHICAL location
DEVICE level
logical address (CSX no.)
AREAS
01 main building
02 factory
02 1st floor
ok:element F2:section F1:function
01 room 101
02 room 102
03 storage room
04 conference room
05 corridor
ok:select F1:function C:end
ok:section F2:menu F1:function
ok:zone F2:area F1:function
01 ground floor
SECTIONS ’fire’
ZONES ’fire’