35-3001A-05-XX CO
2
Sample-Draw Detector • 19
9. Install the detector and controller plug-in terminals strips into their sockets on the new amplifier. If
controller leads or detector cable leads were removed from the plug-in terminal strips during this
procedure, refer to Table 2 and Table 3 below.
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 22 of this manual.
Replacing the Hydrophobic Filter
1. Turn off the controller.
2. Turn off power to the controller.
3. Open the housing door of the sample-draw detector.
4. Disconnect the filter from the rubber elbows on each end of the filter, then remove the filter from the
sample-draw detector.
5. 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.
6. Turn on power to the controller.
7. Turn on the controller.
8. Verify that the flow rate is approximately 1.0 SCFH, then close the housing door.
Table 2:Reconnecting the Amplifier
to the Detector/Amp Terminal Strip
Amplifier Controller
Terminal Strip
Detector/Amp Terminal
Strip on Main PCB
PWR/SIG “-”
-
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
