RKI Instruments 65-2510RK - Manual (Page 10)

6 • 65-2502RK/65-2510RK Oxygen Detector
Maintenance
This section describes maintenance procedures. It includes preventive maintenance,
troubleshooting, and component replacement procedures.
Preventive Maintenance
This section describes a preventive maintenance schedule to ensure the optimum
performance of the oxygen detector. It includes daily, monthly, and quarterly procedures.
Daily
Verify a display reading of 20.9% oxygen at the controller. Investigate significant changes
in the reading.
Monthly
This procedure describes a test to verify that the oxygen detector responds properly to
oxygen deficiency.
WARNING: The controller is not an active gas monitoring device during the response
test procedure.
NOTE: Performing a response test on the oxygen detector may cause alarms. Be sure to
put the controller into its calibration program or disable external alarms before
performing this test.
1. Place the controller into its calibration program or disable external alarms.
2. Verify that the controller display reading is 20.9% oxygen.
If the controller reading is not 20.9% oxygen, set the fresh air reading, then continue
this procedure. See the controller instruction manual for directions to set the fresh air
reading.
3. Exhale into the bottom of the oxygen detector housing.
4. Stop exhaling into the bottom of the detector, then verify that the reading on the
controller display decreased from the normal reading of 20.9% oxygen.
NOTE: If the reading does not decrease, calibrate the detector as described in the
Calibration section of this manual.
5. When the display reading rises above the decreasing alarm setpoint, return the
controller to normal operation.
Quarterly
Calibrate the detector as described in the Calibration section of this manual.