User Manual

65-2502RK/65-2510RK Oxygen D e tec tor • 7
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with th e oxygen detector.
NOTE: This troubleshooting guid e describes detector problems only. See the controller
instruction ma nual for problems you may encounter with the controller.
Replacing the Oxygen Detector
1. Tu rn off the contro ller.
2. Tu rn off power to the cont roller.
3. If the detector is installed directly on a controller, open the controller door.
If the detector is installed remotely from a controller in a junction box, remove the
junction box cover.
4. If the detector is installed directly on a controller, disconnect the detector leads from
the detector terminal strip in the controller. Note the position of the color-coded leads
as you remove them.
If the detector is installed remotely from a controller in a junction box, disconnect the
detector leads from the terminal block in the junction box. Note the position of the
color-coded leads as you remove them.
5. Unscrew the detector from the controller conduit hub or junctio n box conduit hub.
6. Guide the detector leads of the replacement detector through the controller conduit
hub or junction box conduit hub, then screw the mounting threads of the detector into
Table 2:Troubleshooting the Oxygen Detector
Condition Symptom(s) Probable Causes Recommended Action
Fail Condition • Controller indicates a
fail condition.
• The detector wiring is
disconnected or
misconnected.
• The detector is
malfunctioning.
1. Verify that the detector wiring is
correct and secure.
2. C al ib rate 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 fresh air or
zero reading during
calibration.
• Detector requires
frequent cal ib r ati on.
Note: Under “normal”
circumstances, the
detector requ ires
calibration once every
three months .
Some applications may
require a more freque nt
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.