65-2427-05-01 H
2
S Detector • 13
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 H
2
S detector. It includes daily and quarterly procedures.
Daily
Verify a display reading of 0 ppm H
2
S at the controller. Investigate significant changes in the
display reading.
Quarterly
Calibrate the H
2
S detector as described in the Calibration section of this manual.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the H
2
S detector.
NOTE:
This troubleshooting guide describes detector problems only. See the controller
operator’s manual for problems you may encounter with the controller.
Table 2: Troubleshooting the H
2
S Detector
Condition
Symptom(s)
Probable Causes
Recommended Action
Fail
Condition
Controller indicates a
fail condition.
• The detector wiring is
disconnected or
misconnected.
• The plug-in sensor is
not properly plugged
into the sockets in the
detector housing body.
• The detector’s zero
reading is low enough
to cause a fail
condition.
• The detector is
malfunctioning.
1. Verify that the detector wiring is
correct and secure.
2. Confirm that the plug-in sensor is
installed properly.
3. Perform a zero adjustment. A full
calibration is recommended.
4. If the fail condition continues,
replace the plug-in sensor as
described later in this section.
5. If the fail condition continues,
contact RKI for further instruction.