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12. Maintenance
Although very little maintenance is required with Alpha systems, routine checks and adjustments are recommended
to ensure optimum system performance. Qualified service personnel should do the repairs. The following table lists a
few maintenance procedures for this system. These procedures should be performed at least once a year.
Use extreme care when working inside the unit while the system is energized. Do not
make contact with live components or parts.
Circuit cards, including RAM chips, can be damaged by static electricity. Always wear a
grounded wrist strap when handling or installing circuit cards.
Ensure redundant modules or batteries are used to eliminate the threat of service inter-
ruptions while performing maintenance on the system’s alarms and control settings.
Table K — Sample maintenance log
Procedure Date Completed
Clean ventilation openings.
Inspect all system connections. Re-torque if necessary.
Verify alarm/control settings.
Verify alarm relay operation.
12.1 Rectifiers
It is recommended that every five years MOV surge suppressors are replaced (especially in areas of high lightning
activity). See Cordex HP rectifier manual for general maintenance information.
12.2 Batteries
It is recommended that checks are made every six months for battery voltage, conductance, temperature, imped-
ance, connections, etc. See battery manufacturer's manual for general maintenance information.
12.3 Controller Lithium Battery Replacement
NOTE:
Controller - If you remove the battery while the controller is not powered, the time and
date will reset. If you remove the battery while the controller is powered, the date and
time are maintained.
A removable lithium battery is located near the front panel tilt-down tray on the top of the controller. The battery life is
rated up to three years, but replace earlier if the panel does not maintain date and time during power interruption.
WARNING!
Exercise extreme caution and do not touch any connected equipment.
Depress the two front latches and tilt the front panel forward and down. Remove the battery from the slot and re-
place with the same type of battery observing the correct polarity.
WARNING!
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