35-3001A-05-XX CO
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Sample-Draw Detector • 15
Start Up
This section describes procedures to start up the sample-draw 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 wiring is correct and secure. Refer to the controller operator’s manual for connections at
the controller.
3. Turn on or plug in the power to the controller, then turn on the controller.
4. Verify that the sample-draw detector’s Pilot LED is on.
5. Verify that the controller is on and operating properly. Refer to the controller operator’s manual.
NOTE:
When first powered up, the sample-draw detector will enter about a one minute period when the 4-
20 mA output is stabilizing and may be above the controller alarm points or well below zero
momentarily. RKI controllers have a one minute warmup period when the controller does not
display any gas reading or give any alarm indication. The CO
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transmitter’s 4-20 mA signal
should be stable by the time the controller’s warmup period is over.
6. Verify that the flowmeter indicates a flow rate of approximately 1.0 SCFH. If necessary, use the sensor
flow control valve to adjust the flow rate. Turn the valve’s knob counterclockwise to increase the flow
and clockwise to decrease the flow.
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, press and hold the reset
switch and 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, release the reset switch, and verify the flowmeter returns to a
normal flow rate.
9. Enable alarms or place the controller in normal operation.
CAUTION:
Allow the sample-draw detector to warm up for 5 minutes before you continue with the next
section, “Setting the Zero Reading.”
