61-1004RK/61-0191RK CO2 Detector Operator’s Manual Part Number: 71-0145RK Revision: B Released: 7/18/14 www.rkiinstruments.
WARNING Read and understand this instruction manual before operating detector. Improper use of the detector could result in bodily harm or death. Periodic calibration and maintenance of the detector is essential for proper operation and correct readings. Please calibrate and maintain this detector regularly! Frequency of calibration depends upon the type of use you have and the sensor types.
Product Warranty RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials, workmanship, and performance for a period of one year from date of shipment from RKI Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge.
Table of Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 IR CO2 Detector. . . . . . . . . . . . . . . . . . . . . .
Overview This manual describes the 61-1004RK CO2 (carbon dioxide) detector. This manual also describes how to install, start up, maintain, and calibrate the detector when used with a gas monitoring controller. A parts list at the end of this manual lists replacement parts and accessories for the CO2 detector. The 61-1004RK CO2 detector includes the 61-0191RK detector and a junction box.
Description The 61-1004RK CO2 detector has four versions, the 61-1004RK-02 which has a detection range of 0 - 5,000 ppm, the 61-1004RK-03 which has a detection range of 0 - 5% volume, the 61-1004RK-05 which has a detection range of 0 - 50% volume, and the 61-1004RK-10 which has a detection range of 0 - 100% volume. The detector is an infrared type of detector. This section describes the components of the 61-1004RK and 61-0191RK detectors. The 61-1004RK includes the 61-0191RK detector and a junction box.
Table 2: CO2 Detector Color Designations Detector Color Designations 0 - 5,000 ppm black shrink tubing on white wire 0 - 5% volume green shrink tubing on white wire 0 - 50% volume green shrink tubing on red wire 0 - 100% volume red shrink tubing on green wire The output of the CO2 detector mimics the output of RKI’s standard catalytic LEL detectors. For this reason, the CO2 detector’s wire colors are the same as RKI’s catalytic LEL detectors, black, white, green, and red.
Installation This section describes procedures to mount the CO2 detector in the monitoring environment and wire it to a controller. If you purchased a 61-0191RK detector that is factory installed in and factory wired to a controller, detector installation is not necessary. Mounting the CO2 Detector 1. Select a mounting site that is representative of the monitoring environment. Consider the following when you select the mounting site.
Wiring the CO2 Detector to a Controller WARNING: Always verify that the power to the controller is off before you make wiring connections. As mentioned in “Description” on page 2, the IR CO2 detector wires to an RKI controller the same way as an RKI LEL detector, to the LEL detector terminals. See Figure 3 below for the wiring connections. 1. Turn off the controller. 2. Turn off or unplug power to the controller. 3.
Cable Shield Red White Green Controller LEL Detector Terminals Black Controller Housing Terminal Strip Black Green White Red Detector Wires IR CO2 Detector Figure 3: Wiring the CO2 Detector to a Controller 10. If using shielded cable, connect the cable’s drain wire to an available chassis ground at the controller. RKI controllers typically have a ground stud that is a convenient grounding location.
Start Up This section describes procedures to start up the CO2 detector and place the detector into normal operation. Introducing Incoming Power 1. Complete the installation procedures described earlier in this manual. 2. Verify that the power wiring to the controller is correct and secure. Refer to the controller operator’s manual. 3. Turn on or plug in power to the controller, then turn on the controller. 4. Verify that the controller is on and operating properly.
Maintenance This section describes maintenance procedures. It includes preventive maintenance, troubleshooting, and component replacement procedures. Preventive Maintenance This section describes a preventive maintenance schedule to ensure the optimum performance of the CO2 detector. It includes daily, monthly, and biannual procedures. Daily Verify a display reading at the controller of the background concentration of CO2. Typical background concentrations of CO2 vary from about 300 to 600 ppm (0.03 to 0.
NOTE: If the reading is not within ± 20% of the gas concentration, calibrate the detector as described in “Calibration” on page 11. 9. Turn the on/off knob clockwise to close the regulator. 10. Unscrew the regulator from the calibration cylinder and remove the sample tubing from the regulator. 11. Unscrew the calibration cup from the detector. You may leave the sample tubing connected to the calibration cup for convenience. 12.
Replacing the CO2 Detector 1. Turn off the controller. 2. Turn off power to the controller. 3. If the detector is installed directly on a controller, open the controller door. If the detector is installed remotely from a controller in a junction box, remove the junction box cover. 4. If the detector is installed directly on a controller, disconnect the detector leads from the detector terminal strip in the controller. Note the position of the color-coded leads as you remove them.
then more frequent calibration than every 6 months may be necessary. Calibration This section describes how to calibrate the CO2 detector. It includes procedures to prepare for calibration, set the zero reading, set the response reading, and return to normal operation. WARNING: The controller is not an active gas monitoring device during the calibration procedure.
4. Set the response reading according to the controller’s operator’s manual. 5. Unscrew the CO2 cylinder from the regulator. Returning to Normal Operation 1. Remove the sample tubing from the regulator. 2. Remove the calibration cup from the detector. Leave the sample tubing connected to the calibration cup for convenience. 3. Allow the reading at the controller to decrease below the alarm points before returning the controller to normal operation or enabling external alarms.
Parts List Table 3 lists replacement parts and accessories for the 61-1004RK and 61-0191RK CO2 detectors.
