61-1000RK-05 Combustible Gas Detector• 10
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 combustible gas detector. It includes daily, monthly, and quarterly
procedures.
Daily
Verify a display reading of 0% LEL at the controller. Investigate significant changes in the
reading.
Monthly
This procedure describes a test to verify that the combustible gas detector responds
properly to the target gas.
WARNING: The controller is not an active gas monitoring device during the response
test procedure.
NOTE:
Performing a response test on the combustible 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 0% LEL.
If the controller reading is not 0% LEL, set the zero reading then continue this
procedure. See the controller instruction manual for directions to set the zero reading.
3. Screw the calibration cup over the bottom of the detector.
4. Use the sample tubing to connect the regulator to the calibration cup.
5. Screw the regulator into the calibration cylinder. The sample will begin to flow.
6. When the reading at the controller stabilizes, verify that the reading is within ± 10% of
the gas concentration.
NOTE:
If the readings are not within ± 10% of the gas concentration, calibrate the
detector as described in the Calibration section of this manual.
7. Unscrew the regulator from the calibration cylinder, then disassemble the calibration
kit as described in the calibration section of this manual.
8. When the display reading falls below the alarm setpoints, return the controller to
normal operation.
