RKI Instruments 35-3000RK-OXY - Manual (Page 12)

12 • 35-3000RK-OXY Sample-Draw Oxygen Detector
Start Up
This section describes procedures to start up the sample-draw oxygen detector and place
the sample-draw detector into normal operation.
Introducing Incoming Power
1. Complete the installation procedures described earlier in this manual.
2. Verify that the power wiring is correct and secure. Refer to the controller instruction
manual for connections at the controller.
3. Turn on or plug in the incoming power at the power source end, then turn on the
controller.
4. Verify that the sample-draw detector’s PILOT light is on.
5. Verify that the controller is on and operating properly. Refer to the controller
instruction manual.
6. Verify that the flowmeter indicates a flow rate of approximately 1.5 SCFH. If
necessary, use the bypass valve or flow adjust potentiometer to adjust the flow rate.
NOTE: The following step tests for leaks in the sample line. This test will cause a low
flow condition at the sample-draw detector and a fail condition at the controller.
Be sure to put the controller into its calibration program or disable external
alarms before performing this test.
7. Verify that the incoming sample line is not leaking. To test the sample line, plug the
open end of the sample line with your thumb. If the flowmeter ball drops to the
bottom of the flowmeter, the incoming sample line is not leaking.
8. Remove your thumb from the sample line, verify that the flowmeter returns to a
normal flow rate.
9. If alarms were disabled at the controller, enable them.
Setting the Fresh Air Reading
CAUTION: If you suspect the monitoring environment is not of normal oxygen content (20.9%),
use the calibration kit and zero air calibration cylinder to introduce “fresh air” to the
detector and verify an accurate normal setting.
1. Verify that the sample-draw detector is sampling a fresh air environment
(environment known to be of normal oxygen content).
2. Verify a reading of 20.9% at the controller.
If the display reading is 20.9%, start up is complete. The sample-draw oxygen detector
is in normal operation. If the display reading is not 20.9%, continue with step 3.
3. Perform a zeroing operation at the controller. See the controller instruction manual for
directions.