Alpha Technologies Cordex CXPS-M 48_24-1200_600A - Manual (Page 55)

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9400004-J0 Rev B
9. Maintenance
Although very little maintenance is required with Alpha systems, routine checks and adjustments are recom-
mended 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.
WARNING!
Table H — 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.
9.1 Rectifiers
It is recommended that every five years MOV surge suppressors are replaced (especially in areas of high light-
ning activity).
See Cordex rectifier manual for general maintenance information.
9.2 Controller Lithium Battery Replacement
NOTE:
Replace the battery within 30 seconds to prevent loss of date and time.
A removable lithium battery is located near the back and to the right of the motherboard. 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.
To replace the lithium battery, shut down the CXC, remove the rear cover, and pull battery out carefully. Ensure
that the new battery is the same as the one being replaced.
9.3 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.