14 • 35-3010RK-03 Sample-Draw Detector
Monthly
This procedure describes a test to verify that the sample draw detector responds properly
to the target gases.
Preparing for the response test
CAUTION:
This procedure may cause alarms at the controller. Take appropriate action to avoid
this, such as entering the calibration mode at the controller or disabling external
alarms.
1.
Verify that the controller is reading 0 for the combustible and CO channels and 20.9
for the oxygen channel.
If the reading is not 0 on the combustible or CO channel or 20.9 on the oxygen
channel, set the zero reading as described in “Start Up” on page 12, then continue this
procedure.
2.
Assemble the calibration kit as described in the calibration section. Use of a 3-gas
cylinder is recommended so that all channels may be checked at once.
Performing the response test
NOTE:
This procedure describes the RKI calibration kit that includes a demand flow
regulator.
1.
Screw the regulator into the calibration cylinder.
2.
Connect the calibration tubing from the regulator to the inlet line at or near the INLET
fitting. Gas will begin to flow.
3.
After one minute, verify that the reading for each channel at the controller stabilizes
within ± 10% of the concentration of the test sample. If the reading is not within ± 10%
of the test sample, calibrate the sample draw detector as described in the calibration
section of this manual.
4.
Remove the calibration tubing from the inlet line, then reconnect the inlet line.
5.
Store the calibration kit in a safe place.
Quarterly
Calibrate the sample draw 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 sample draw detector.
NOTE:
This troubleshooting guide describes sample draw detector problems only. See
the controller operator’s manual if the controller exhibits any problems.
Sample Draw Detector Fail Condition
Symptoms
•
The sample draw detector’s Fail LED is on.
•
The pump is off
