Extinguishing Panel - INSTRUCTION MANUAL
Approved Document No: GLT.MAN-124
PAGE 23
Issue : 1 Author: NRPJ Date: 15/11/2007
Zone Fault
A Zone Fault is indicative of one or more of the following faults:-
Open Circuit fault.
•
Check that the correct end of line has been fitted (2k2 resistor for crossed zones, 100uF
40V capacitor for peripheral zones)
•
Check Zone Monitoring Fuse FS1
•
Check that there are no breaks in the cable, and that all screw connections are secure.
•
Check that no detectors have been removed from the circuit.
•
Check that all detectors are correctly fitted to their bases.
•
As a cable check, remove zone wire from panel. Temporarily join the + & - cables at the
end of line & Check for continuity. (If a break is found, splitting the line in half & fitting EOL
will help determine which section of cable has the fault)
•
As a panel check, remove cable & fit EOL at the panel. If the fault clears, the panel is
working correctly.
•
If a panel does not report a fault when an detector is removed, check with your supplier if
the detector is compatible with the Premier EX8.
Short Circuit Fault (Gen S/C LED will be lit)
•
Check that the correct end of line has been fitted (see above), and check that it has not
been fitted backwards. The capacitor should be fitted with the –ve arrow stripe pointing to
-ve
•
Check that no equipment, other than detectors or call points has been fitted to the zone.
•
Check for shorts to the cable screen.
•
Check that none of the heads have become damaged (remove one at a time).
•
As a panel check, remove cable & fit EOL at the panel. If the fault clears, the panel is
working correctly.
Monitored Input Faults
As above, except EOL is 2k2, and Fuse is FS2
Sounder Circuit Fault
A Sounder Fault is indicative of one or more of the following faults:-
Sounder Open Circuit fault.
•
Check that the correct end of line resistor (10K) has been fitted to both circuits
•
Check that sounder fuses FS4 & 5 are intact.
•
Check that there are no breaks in the cable, and that all screw connections are secure.
•
As a panel check, remove both circuits cable & fit both EOLs at the panel. If the fault
clears, the panel is working correctly
.
Short Circuit Fault (Gen S/C LED will be lit)
•
Check that the correct end of line has been fitted to both circuits (10k resistor)
•
Check that ALL sounders, Bells etc are POLARISED, and are fitted the correct way round.
(see diagram after list)
•
Check for shorts to the cable screen.
•
As a panel check, remove cable & fit EOL at the panel. If the fault clears, the panel is
working correctly.
Note: If non-polarised alarm
devices (eg some types of old
mechanical bell, or a relay) are
used, then a diode will have to
be placed in line with the device
to enable fault monitoring. They
may also need a back EMF
protection diode. (symptoms:
Chattering sounder relays that
don’t turn off).
+
- -
+
SND+
SND-
BELL
10K
End of
Line Resistor
+
- -
+
+
- -
+
BELL
BELL
CONNECTOR
BLOCK
POLARISING
DIODE
BACK EMF
DIODE
NC
NO
CM
RELAY
