Fault Test; Isolating / De-Isolating Circuits - Simplex 4020 Operating Manual

4020 OPERATORS MANUAL

8.3 FAULT TEST

STEP 1 Open the panel door and press FLT TEST. A fault condition will be
simulated on every zone and the following message displayed:
FLT
TEST
STEP 2 To acknowledge each fault, press FLT LIST(2) key) to access the fault list
and then press the ACK+ key (4) to acknowledge each fault. The panel
buzzer will stop once all faults are acknowledged.
2
FLT LIST
STEP 3 To remove the simulated faults, press the ESC key to exit the fault list and
then press the RST(5) key to reset the system.
5
RST

8.4 ISOLATING / DE-ISOLATING CIRCUITS

If work is planned near detectors (sanding etc.) they need to be isolated otherwise the
dust and grit may cause an alarm. Also output ACF zones may need to be isolated
when servicing the panel. When a zone is isolated it will still register an alarm and
indicate on the panel but will be prevented from activating the Brigade relay or any
associated control outputs.
Zones can be isolated/de-isolated using the following procedure:
STEP 1 If the display is not in normal mode, press the ESC key on the right-hand
keypad to return the panel the normal display mode.
STEP 2 Press the ISOLATE key on the main keypad.
ISOLATE
Document No: 4020-M010
*** ALARM/FAULT TEST IN PROGRESS ***
Alarms: 00 Faults: XX Isolated: 00
4
ACK+
*** DETECTOR RESET IN PROGRESS ***
Alarms: 00 Faults: 00 Isolated: 00
1st February, 1997
Page 31
Issue 2.0