RKI Instruments 65-2336RK - Manual (Page 15)

65-2336RK CO Transmitter • 11
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Table 2:Troubleshooting the CO Transmitter
Condition Symptom(s) Probable Causes Recommended Action
Fail Condition Controller indicates a
fail condition. • The transmitter wiring
to the controller is
disconnected or
misconnected.
• The plug-in sensor is
not properly plugged
into the sockets in the
detector housing body.
• The wiring from the
detector to the
amplifier is
disconnected or
misconnected.
• The transmitter’s zero
reading is low enough
to cause a fail
condition.
• The transmitter is
malfunctioning.
1. Verify that the transmitter wiring to the
controller is correct and secure.
2. Confirm that the plug-in sensor is
installed properly.
3. Verify that the wiring from the detector
to the amplifier is correct and secure.
4. Perform a zero adjustment. A full
calibration is recommended.
5. If the fail condition continues, replace
the plug-in sensor as described later
in this section.
6. If the fail condition continues, contact
RKI for further instruction.
Slow or No
Response/
Difficult or
Unable to
Calibrate • Transmitter responds
slowly or does not
respond to response
test.
• Unable to accurately
set the zero or
response reading
during calibration.
• Transmitter requires
frequent calibration.
Note: Under “normal”
circumstances, the
transmitter requires
calibration once every 3
months.
Some applications
may require a more
frequent calibration
schedule.
• The calibration cylinder
is low, out-dated, or
defective.
• The flame arrestor in
the detector housing
cap is wet or clogged
with dirt or other
particulates.
• The calibration gas is
not an appropriate
concentration.
• The transmitter is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. Check the detector housing cap to
determine if the flame arrestor is wet
or dirty. Clean if necessary.
3. Verify that the calibration gas
concentration is appropriate for the
transmitter. Zero emission air (20.9%
oxygen) is normally used for a zero
adjustment if the environment is
suspect and 50 PPM CO in air is
normally used for a response
adjustment.
4. If the calibration/response difficulties
continue, replace the plug-in sensor
as described later in this section.
5. If the calibration/response difficulties
continue, contact RKI for further
instruction.
Unexplained
Upscale
Readings or
Alarms • Controller indicates a
CO reading that
cannot be verified.
• CO alarms occur at
the controller that
cannot be explained.
• Charcoal filter is
saturated and no
longer scrubbing out
interfering gases.
1. Replace charcoal filter.
2. If difficulties continue, contact RKI for
further instructions.