Fire-Lite MS-10UD Series FACP - Manual (Page 102)

102 MS-5UD & MS-10UD Series Manual — P/N 52626:C4 3/7/2014
Operating Instructions Detector Functions
4.12 Detector Functions
Maintenance Alert
i 3 smoke detectors will be polled for maintenance and freeze conditions on initial entry into Normal
mode. Thereafter, each device will be polled every hour for freeze and every four hours for mainte-
nance conditions All alarm and system trouble conditions are annunciated on the control panel’s
LCD.
System Alarm Verification
The control panel may be programmed to perform alarm verification to help eliminate the nuisance
of false alarms. Alarm verification applies to smoke detectors only.
4.13 Time Functions: Real-Time Clock
The FACP includes a crystal-based clock that provides time of day, date and day of week. Time is
displayed as 12 or 24 hour time with month/day/year and is stored in RAM. Daylight savings time
change-over is programmable and automatic. If both AC and battery are lost, the time must be
reprogrammed.
4.14 Coded Operation
The NAC circuits resident on the control panel main circuit board can be programmed for coded
operation. The available pulse rates which can be programmed for coded operation are as follows:
• Continuous: Steady output with no pulsing
• March Time: Pulses at 120 ppm (pulses per minute)
• Temporal Code: Pulses at ½ second On, ½ second Off, ½ second On, ½
second Off, ½ second On, 1½ second Off
• California Code: 10 seconds On, 5 seconds Off
• Two-Stage: Pulses at 20 ppm (pulses per minute) for 3 or 5 minutes
and then changes to Temporal
4.15 Presignal
Presignal option programs an initiating device to delay the activation of NACs while allowing
visual verification by a person. Once a detector triggers an alarm, the onboard piezo sounds imme-
diately, but the NACs are not activated for a user programmed time duration of up to three minutes.
Note that the alarm relay and communicator will respond to the initial alarm immediately.
After the programmed delay, the NACs will activate if the source of the alarm is not cleared. Note
that if a second alarm occurs during the programmed time delay, the alarm will be processed imme-
diately, causing activation of the NACs. The events which occur upon Presignal activation are as
follows:
 onboard piezo sounds immediately
 control panel LCD display will indicate a presignal event and the active zone
 annunciators (if enabled) will sound the local piezo, and pulse the alarm LED and zone LED
NOTE: To ensure that the system is functioning properly, the FACP will perform a freeze check
five minutes after the panel is reset, followed by a maintenance check. If there is no freeze or
maintenance condition, the panel will continue to monitor for freeze conditions every hour and
maintenance conditions every four hours.