RKI Instruments 65-2481RK - Manual (Page 21)

65-2481RK Multi Point Detector • 17
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the multi-point detector.
NOTE: This troubleshooting guide describes multi-point detector problems only. See the
controller operator’s manual for problems you may encounter with the
controller.
Table 2: Troubleshooting the Multi-Point Detector
Condition Symptom(s) Probable Causes Recommended Action
Fail Condition Controller indicates a
fail condition. • The detector wiring is
disconnected or
misconnected.
• The CO, O
2
, or H
2
S
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 CO, O
2
, or H
2
S plug-
in sensor is installed properly.
3. Perform a zero adjustment. A full
calibration is recommended.
4. If the fail condition continues, replace
the CO, O
2
, or H
2
S plug-in sensor as
described later in this section.
5. 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
transmitter requires
calibration once every 3
months for catalytic
LEL, O
2
, H
2
S, and CO
detectors and every 6
months for infrared LEL
detectors.
Some applications
may require a more
frequent calibration
schedule.
• The calibration cylinder
is low, out-dated, or
defective.
• The flame arrestor on
the LEL detector or in
the CO, O
2
, or H
2
S
detector housing cap is
wet or clogged with dirt
or other particulates.
• The calibration gas is
not an appropriate
concentration.
• The detector is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. Check the LEL detector or 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 each
detector.
4. If the calibration/response difficulties
continue, replace the LEL detector or
the CO, O
2
, or H
2
S 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
reading that cannot
be verified.
• Alarms occur at the
controller that cannot
be explained.
• Charcoal filter in CO
detector is saturated
and no longer
scrubbing out
interfering gases.
1. Replace charcoal filter in the CO
detector.
2. If difficulties continue, contact RKI for
further instructions.