OPERATION
7-1-07
Page 8
REV. 2
Table 3-2.1: Output Signals versus Detector State
Note:
(1) The detector will be in its BIT FAULT state until it has passed a successful BIT.
(2) The alarm outputs will be activated as long as the alarm conditions are present and will stop approximately 3 seconds after
the fire is no longer detected.
3.3 ALARM DELAY
When an alarm (detection) condition is encountered, detection activation will be delayed for 3 seconds while evaluating the
condition. If the alarm condition is still present, a signal will be sent to the CHECKFIRE controller. If this condition no longer
exists, the detector will return to its standby state. The LED will indicate warning level during the delay time only if the fire
condition exists.
3.4 MANUAL/AUTOMATIC BUILT-IN TEST (BIT)
The detectors’ Built In Test (BIT) checks the following:
• Electronics circuitry
• Sensors
• Window cleanliness
Note: Manual/automatic BIT operation will require disconnecting power to each detector to be tested.
An unsuccessful BIT sequence activates the following:
• A FAULT condition at the CHECKFIRE controller.
• The LED flashes (4 Hz) at yellow.
• BIT procedure will be performed every 1 minute until successful BIT has been encountered.
A successful BIT does not activate any indicator.
The LED flashes (1 Hz) at green (normal condition).
DETECTOR
COLOR
FLASHING
ALARM
FAULT
STATE
LED
LED
RELAY
RELAY
NORMAL
Green
1 Hz
Off
On
WARNING
Red
2 Hz
Off
On
ALARM (3)
Red
Steady
On
On
MANUAL/AUTOMATIC
BIT FAULT (2)
Yellow
4 Hz
Off
Off
WARNING AT BIT FAULT
Red
2 Hz
Off
Off
ALARM AT BIT FAULT
Red
Steady
On
Off
FAULT
Yellow
4 Hz
Off
Off
