RKI Instruments 35-3001A-05-02 - Manual (Page 21)

35-3001A-05-02 Carbon Dioxide Sample-Draw Detector • 17
NOTE: When the sample-draw detector is first powered up with a new amplifier, the initial
output may be either high or below zero depending on the setting of the zero pot. Be sure
to make arrangements so that this does not cause unwanted alarms.
10. Turn on power to the controller.
11. Turn on the controller and place it into normal operation.
12. Allow the sample-draw detector to warmup for 5 minutes.
13. Calibrate the sample-draw detector as described in “Calibration” on page 19 of this manual.
Replacing the Hydrophobic Filter
1. Open the housing door of the sample-draw detector.
2. Disconnect the filter from the rubber elbows on each end of the filter, then remove the filter
from the sample-draw detector.
3. Install the new filter. Be sure the side of the filter marked “INLET” is connected to the elbow
that is connected to the inlet fitting.
4. Verify that the flow rate is approximately 1.0 SCFH, then close the housing door.
Replacing the Particle Filter
1. Disconnect the tubing routed to the sampling area, if installed, from the particle filter.
2. Disconnect the particle filter from the inlet fitting’s tubing stub.
3. Install the new particle filter onto the inlet fitting’s tubing stub. Be sure the arrow on the
particle filter is pointing toward the inlet fitting.
4. Reinstall the tubing routed to the sampling area.
PWR/SIG “S” S
PWR/SIG “+” +
Table 3:Reconnecting the IR Carbon Dioxide Sensor to the Amplifier
Amplifier Detector
Terminal Strip
Detector Lead
DETECTOR “R” RED
DETECTOR “W” WHT
DETECTOR “G” GREEN
DETECTOR “B” BLK
Table 2:Reconnecting the Amplifier
to the Detector/Amp Terminal Strip
Amplifier Controller
Terminal Strip
Detector/Amp Terminal
Strip on Main PCB