Cornell 4800 series, Installation Manual

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Cornell Communications, Inc
4800 Installation Manual 07-31-18
25
Maintenance
Periodic Maintenance
In general, the 4800 system will provide system fault information at the Control Panel(s) display. The “ACTION
REQUIRED” LED represents an active call or a fault in the system that needs to be corrected.
The phone line circuit is checked every 24 hours for proper operation. A notification of a fault will be shown on
the Control Panel(s) display, in the event of a failure.
The power supply is monitored at the Control Panel(s) for AC Fail, and Low Battery/Fail. The “ON BATTERY” LED
will illuminate if the AC power has failed and the system is powered by batteries.
Warning
– To ensure proper operation, the 4800 system should be tested on a regular basis by qualified
personnel.
Power Supply Maintenance
Each Unit should be tested at least once a year for the proper operation as follows:
•
Output Voltage Test: Under normal load conditions, the DC output voltage should be checked for proper
voltage level. (24VDC)
•
Battery Test: Under normal load conditions check that the battery is fully charged, check specified
voltage both at battery terminal and at the board terminals marked [+ BAT -] to insure there is no break
in the battery connection wires.
Note: Expected battery life is 5 years. However, it is recommended changing batteries in 4 years or less if
needed. (See install documentation provided with each Power Supply)
Service
It is recommended that all defective units be returned to the manufacturer for repair. The 4800 system does
not have any field serviceable parts or components.