61-1000RK-05 Combustible Gas Detector• 11
Quarterly
Calibrate the 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 combustible gas detector.
NOTE:
This troubleshooting guide describes detector problems only. See the controller
operator’s manual for problems you may encounter with the controller.
Replacing the Combustible Detector
1. Turn off the controller.
2. Turn off power to the controller.
3. Remove the junction box cover.
4. Disconnect the detector leads from the terminal block inside the junction box. Note
the position of the color-coded leads as you remove them.
5. Unscrew the detector from the junction box.
6. Guide the detector leads of the replacement detector through the bottom conduit hub
of the junction box, then screw the mounting threads of the detector into the conduit
hub.
7. Connect the detector leads of the terminal block in the same position as the leads you
removed in step 4.
Table 2:Troubleshooting the Combustible Gas Detector
Condition
Symptom(s)
Probable Causes
Recommended Action
Fail Condition
• Controller indicates a
fail condition.
• The detector wiring is
disconnected or
misconnected.
• The detector zero
signal is low enough to
cause a fail condition.
• The detector is
malfunctioning.
1. Verify that the detector wiring is
correct and secure.
2. Calibrate the detector.
3. If the fail condition continues, replace
the detector.
4. If the fail condition continues, contact
RKI for further instruction.
Slow or No
Response/
Difficult or
Unable to
Calibrate
• Detector responds
slowly or does not
respond to response
test.
• Unable to accurately
set the zero or
response reading
during calibration.
• Detector requires
frequent calibration.
Note:
Under “normal”
circumstances, the
detector requires
calibration once every
three months.
Some applications may
require a more frequent
calibration schedule.
• The calibration cylinder
is low, out-dated, or
defective.
• The detector is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. If the calibration/response difficulties
continue, replace the detector.
3. If the calibration/response difficulties
continue, contact RKI for further
instruction.
