012-526-B2 Rev C
Page 17 of 20
7
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 repairs.
NOTE:
Consult factory for replacement parts.
The following table lists a few maintenance procedures for this system. These procedures should be performed at
least once a year.
WARNING: HIGH VOLTAGE AND SHOCK HAZARD.
Use extreme care when working inside the shelf 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 interruptions
while performing maintenance on the system’s alarms and control settings.
Procedure
Date Completed
Clean ventilation openings
Inspect all system connections (re-torque as necessary)
Verify alarm/control settings
Verify alarm relay operation
Table C–Sample maintenance log
7.1
Fan Replacement
CAUTION: Use fan assembly with correct connector as supplied by Alpha.
1. Shut off the unit and unlatch (rotate) the front fastener that secures the module to the shelf.
2. Slide the module 10cm (4”) out of the shelf and wait two minutes for module capacitors to discharge.
3. Access the fan by removing the screws (top and side) that secure the front panel to the module chassis.
4. Disconnect the fan power lead wires from the module.
5. Note the direction of air flow (into the module front) and remove the fan from the front panel.
6. Install the replacement fan with the correct airflow direction following the preceding steps in reverse order.
NOTE:
Use care with fan wire routing so that the lead wires do not become pinched when the front panel is reattached.
