F4000 LCD Operator's Manual Document No: LT0117
Operating Instructions - Zone Functions
Page 7-16 19 April 2002 Issue 2.38
7.5.2 OPERATING SEQUENCE
From zone recall displays, to Auto-Reset test the displayed zone that is not an ACZ, press:
From all other information displays, or the base display, press:
to auto-reset test Zone nnn, if Zone nnn is NOT an ACZ.
7.5.3 TEST OPERATION
While in the AUTO-RESET mode the zone is automatically isolated from all mapped outputs
except the alarm bell, which operates for 2 seconds when the zone goes into alarm (unless
the bells output is isolated, or the zone is not configured to operate the bells).
On operation of a detector and after the 2 second transient suppression delay the zone
circuit will go into the alarm condition and stay in that condition for 8 seconds to allow the
detector LED to be checked. The detector circuit is then reset for 15 seconds to allow
smoke or heat to clear.
To assist with identification of the detectors that are wired to particular alarm zones the zone
alarm indicators latch in this mode of operation, flashing when an alarm condition is present
on the circuit and steady on the removal of the alarm condition.
If a fault occurs on a zone in Auto-Reset mode then the Fault LED latches on steady until
the end of auto-reset mode, even if the zone is programmed as non-latching.
Resetting or Isolating the zone will cancel the auto-reset Test mode for the zone.
Also, if an operator attempts to test a zone already in auto-reset mode, the LCD will query
whether the auto reset test for that zone should be stopped. To do so, press the "ACK" key,
and the zone will be removed from auto reset mode. Note the warning below.
7.5.4 EXIT TEST
To exit the test, either RESET the zone as per Section 7.4, or ISOLATE the zone as per
Section 7.2.
WARNING: A detector on the zone may have gone into an permanent alarm. e.g.
a fusible link heat detector excessively exposed to heat during the
test.
Before resetting the zone, wait for approximately 20 seconds and
ensure that the ALARM LED is STEADY. If it is flashing during this
period, "ISOLATE" the zone and investigate for faulty detectors.
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