Maintenance Signal Support; Checkout Procedure For Polling Loop Zones - ADEMCO VISTA-120 Installation And Setup Manual

Maintenance
Signal Support
Check-Out
Procedure For
Polling Loop
Zones
The control monitors maintenance signals from certain smoke detectors (4192CPM,
4192SDM, 4192SDTM). Maintenance signals are triggered when a detector gets
dirty and indicate that the detector should be cleaned or replaced. If a detector
maintains a high or low sensitivity condition for longer than 24 hours, the control
sends a dialer report (trouble message for non-Contact ID reports; event code 385 or
386 for Contact ID reports), makes an event log entry, and displays HSENSxxx or
LSENSxxx at the keypads (xxx = zone number).
After installation and programming of all polling loop zones is complete, each
partition of the security system should be checked as follows:
1. Make certain that all devices and sensors connected to the polling loop are not
in a faulted state.
should be covered (use a cloth to mask them temporarily if necessary).
2. With all hard-wired and polling loop zones intact, the keypads connected to
the system should display:
If the keypad(s) begins beeping and the word "CHECK" or "TRBLE" is
displayed, along with a zone or zone numbers, the system either does not see
the displayed zone(s) or the tamper switches on 4190WH, 4275EX, 4278EX,
4278EX-SN, 998MX units are faulted. Please check the DIP switch settings for
the zone(s), all connections, and/or that the covers are in place.
situation has been corrected, enter the [Security Code] + [OFF] sequence twice
to clear the trouble.
If the following is displayed,
press the [ ] key to display the faulted zone(s). Restore any faulted zone(s) as
necessary. When the DISARMED...READY TO ARM message is displayed,
you can proceed to the next step.
4. Fault and then restore every contact or sensor on each zone individually to
ensure that it is being monitored by the system. Each time a zone is faulted,
the keypads in the partition to which the zone is assigned should display the
number of the faulted zone. When each zone is restored, the READY TO ARM
message should appear again.
If a zone or zones are not displayed at the correct partition's keypad(s), check both
keypad and zone programming to verify the correct partition assignment.
5. When you get the proper displays on the keypad(s), the polling loop zones in
the system are functioning properly.
6. Disconnect AC mains.
Doors and windows with contacts should be closed, PIRs
DI SA R M ED
RE AD Y TO A R M
DI SA R M ED P re s s
to show fa ult s
Once the
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