RKI Instruments Beacon 100 - Manual (Page 29)

Beacon 100 Gas Monitor Operator’s Manual Preventive Maintenance • 29
button to perform a zero adjust. The screen will momentarily show WAIT and then
indicate ZERO COMPLETE.
9. Allow enough time for the gas reading to return to normal and then press ESCAPE
three times to return to normal operation.
NOTE : If you do not allow the gas reading to return to normal, then unwanted alarms
may occur.
Preventive Maintenance
Preventive maintenance of the Beacon 100 consists of daily, monthly, and quarterly
procedures to ensure that the detector reading remains on zero (20.9 for oxygen) in fresh
air and is responsive to gas. See the operator’s manual for the detector installed on the
Beacon 100 for detector preventive maintenance schedules.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the Beacon 100.
NOTE: This troubleshooting guide describes controller problems only. See the
Troubleshooting guide in the detector head operator’s manual for problems you
may encounter with the detectors.
No Power
Symptoms
• The pilot lights is off.
• The display screen is blank.
Probable causes
• The power wiring is disconnected or misconnected.
• The AC or DC fuse is blown.
• The display cable is disconnected.
Recommended action
1. Verify that the wiring to the power source is correct and secure.
2. At the Beacon 100, verify that the wiring to the AC terminal strip is correct and secure.
3. Check the continuity of the AC and DC fuse.
4. Verify that the display cable is connected. The display (ribbon) cable plugs into
connectors on the bottom of the display board and on the main board below and to
the left of the DC fuse.
5. If the power difficulties continue, contact RKI Instruments, Inc., for further
instruction.