65-2484RK-06 Multi Point Detector Operator’s Manual Part Number: 71-0233RK Revision: P1 Released: 7/20/11 RKI Instruments, Inc. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Detectors. . . . . . . . . . . . . . . . . . . . . . . . .
Overview This manual describes the 65-2484RK-06 multi point direct connect detector. This manual also describes how to install, start up, maintain, and calibrate the detector when it is used with a gas monitoring controller. A parts list at the end of this manual lists replacement parts and accessories for the detector. Specifications WARNING: Do not use this product in a manner not specified in this instruction manual. Table 1 lists specifications for the multi-point detector.
NOTE: The following symbol on the detector label is a caution to the user to refer to this documentation for installation and operation instructions: ! WARNING: When using the 65-2484RK-06, you must follow the instructions and warnings in this manual to assure proper and safe operation of the 65-2484RK-06 and to minimize the risk of personal injury. Be sure to maintain and periodically calibrate the 65-2484RK-06 as described in this manual.
Description This section describes the multi-point detector. It consists of the detectors, the terminal strips, the conduit seal, and the junction boxes. Detectors This section describes the components of the various detectors that are used with each model of the 65-2484RK-06. 61-0140RK LEL Detector LEL Detector Figure 1: 61-0140RK LEL Detector Component Location The combustible gas detector is a catalytic type detector that produces an electrical output that corresponds to the detection range.
Oxygen Detector The detector consists of the oxygen sensor, the detector housing body, detector housing cap, and cap gasket. Detector Housing Body Cap Gasket Plug-in Oxygen Sensor Detector Housing Cap Flame Arrestor Guard Figure 2: Oxygen Detector Component Location Detector Housing Body The detector housing body protects the electronic components within the housing. Use the mounting threads at the top of the housing to screw the oxygen detector into the 3/4” NPT hub on the bottom of the junction box.
H2S Detector The detector consists of the H2S sensor, the detector housing body, detector housing cap, and cap gasket. Detector Housing Body Cap Gasket Plug-In H2S Sensor Detector Housing Cap Flame Arrestor Guard Figure 3: H2S Detector Component Location Detector Housing, Housing Cap, & Cap Gasket The detector housing protects the sensing components within the housing. Use the mounting threads at the top of the housing to screw the H2S detector into a 3/4” NPT hub.
SO2 Detector The 65-2300RK-SO2 detector consists of the detector housing body, detector housing cap, splashguard, cap gasket, and the plug-in sensor. Detector Housing Body Cap Gasket Plug-In SO2 Sensor Detector Housing Cap Splash Guard (removable) Figure 4: SO2 Toxic Detector Component Location Detector Housing Body The detector housing body protects the electronic components within the housing. Use the mounting threads at the top of the housing to screw the toxic detector into a 3/4” NPT hub.
Junction Boxes Use the junction boxes to install the multi-point detector at a mounting site that is remote from the controller. The junction boxes protect the terminal strips and wiring connections made to the terminal strips. Use the top 3/4’’ conduit hub to connect wiring from the terminal strips to the controller. Use the cover on the front of the junction boxes to access the interior of the junction boxes. The detectors and terminal strips are factory installed in the junction boxes.
.20 DIA X .45 Slot, (2X), mounting 7.50 3.15 2.40 3/4 NPT Hubs (4X) 3.11 .25 1.25 19.0 Max. H2S Detector Sealed Wire Conduit SO2 Detector 3/4" NPT Nipple (2X) LEL Detector 2. Oxygen Detector 3.0 7.6 Figure 5: Outline & Mounting Dimensions 65-2484RK-06 3.0 1.10 At the mounting site you select, use #10 screws to mount the detector to a vertical surface. CAUTION: Mount the multi-point detector with the detectors facing down (see Figures 5).
Wiring the Multi-Point Detector to a Controller WARNING: Always verify that the power source is OFF before you make wiring connections. 1. Turn off the controller. 2. Turn off or unplug power to the controller. 3. Remove the junction box cover from the top junction box. 4. Guide a ten-conductor, shielded cable, or ten wires in conduit through the top conduit hub of the junction box. Use appropriate conduit fittings and construction technique for the environmental rating of the junction box.
BLK GRN LEL WHT RED CONTROLLER TER MIN ALS RED BLK H2S BLK BLUE SO2 WHT GRN OXY CONTROLLER TER MIN ALS RED BLACK BLACK BLUE RED GREEN WHITE GREEN WHITE BLACK H2S D ETEC TOR SO2 DETECTOR RED WHITE GREEN BLACK WHITE GREEN WHITE RED WHITE GREEN GREEN BLACK LEL D ETEC TOR OXYGEN D ETECTOR Figure 6: Wiring the 65-2484RK-06 to a Controller 10 • 65-2484RK-06 Multi Point Detector
9. Connect the cable’s drain wire to an available chassis ground at the controller. RKI controllers typically have a ground stud that can be used to ground the cable’s drain wire. Start Up This section describes procedures to start up the multi-point 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.
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 multi-point detector. It includes daily, monthly, and quarterly procedures. Daily At the controller, verify a display reading of: • 0 %LEL for combustible gas • 20.
NOTE: Ensure that you are using an appropriate calibration cylinder for the channel you are testing. 5. Use the calibration kit sample tubing to connect the regulator to the calibration cup. Performing the response test 1. Turn the regulator’s on/off knob counterclockwise to open the regulator. Gas will begin to flow. 2. Allow the gas to flow for two minutes, then verify that the reading is within ± 20% of the cylinder gas concentration.
Troubleshooting The troubleshooting guide describes symptoms, probable causes, and recommended action for problems you may encounter with the multi-point detector. NOTE: This troubleshooting guide describes multi-point detector problems only. See the controller operator’s manual for problems you may encounter with the controller. Table 2: Troubleshooting the Multi-Point Detector Condition Symptom(s) Probable Causes Recommended Action Fail Condition Controller indicates a fail condition.
Replacing Components of the Multi-Point Detector This section includes maintenance procedures for the LEL detector, the oxygen detector, the H2S detector, and the SO2 detector. Replacing the LEL Detector 1. Turn off the controller. 2. Turn off or unplug incoming power to the controller. 3. Remove the junction box cover from the bottom junction box. 4. Disconnect the detector leads from the terminal block in the junction box. Note the position of the color-coded leads as you remove them. 5.
6. Make sure the cap gasket is in place and screw the detector housing cap back onto the detector housing body. 7. Turn on or plug in power to the controller. 8. Turn on the controller and place into normal operation. CAUTION: Allow the replacement sensor to warm up for 5 minutes before you continue with the next step. 9. Calibrate the detector as described in “Calibration, O2 Detector” on page 21. Replacing the Oxygen Detector NOTE: In most cases, it is only necessary to replace the oxygen sensor.
1. Turn off the controller. 2. Turn off or unplug power to the controller. 3. Unscrew the detector housing cap from the detector housing body. Make sure not to lose the cap gasket. 4. Unplug and remove the H2S sensor. 5. Carefully plug the replacement sensor into the socket pattern that is located in the detector housing. 6. Make sure the cap gasket is in place and screw the detector housing cap onto the detector housing body. 7. Turn on or plug in power to the controller. 8.
SO2 Detector This section includes a procedure to replace the SO2 sensor and one to replace the entire detector assembly. In most cases it is not necessary to replace the entire detector assembly. Replacing the Plug-In SO2 Sensor CAUTION: The plug-in sensor contains electrolyte which is a dilute acid. Do not disassemble the sensor when replacing it with a new one. If sensor electrolyte comes in contact with your skin, wash affected area thoroughly with soap and water. 1. Turn off the controller. 2.
7. Connect the detector leads to the terminal block the same way the old detector was wired. See the controller operator’s manual and the controller’s detector head specification sheet for the multi-point detector to verify the connections are correct. Also see Figure 6 for a wiring diagram. 8. Reinstall the junction box cover. 9. Turn on or plug in power to the controller. 10. Turn on the controller.
1. Screw the calibration cup onto the bottom of the detector you wish to calibrate. NOTE: If you can verify that the multi-point detector is in a fresh air environment, you do not need to apply zero air to the detector before adjusting the zero reading. 2. Screw the regulator into the zero air calibration cylinder. Make sure the regulator is off. It is off when the on/off knob is turned all the way clockwise. 3.
Returning to Normal Operation 1. Unscrew the calibration cup from the detector. NOTE: For convenience, leave regulator and calibration cup connected by the sample tubing. 2. When the controller display reading falls below the alarm points, return the controller to normal operation. NOTE: If you do not allow the gas reading to decrease below the alarm points, then unwanted alarms may occur. 3. 4.
calibration cup. 4. Put the controller into its calibration program. See the controller operator’s manual for instructions to enter the calibration program. NOTE: RKI controllers have a peak hold feature for fresh air adjustment and a minimum hold feature for zero adjustment. Because of this, the instructions call for turning off the gas to a detector before making adjustments. Setting the Fresh Air Reading 1. Follow the directions in the controller operator’s manual for setting the fresh air reading.
Calibration, SO2 Detector This section describes how to calibrate the toxic detector. It includes procedures to prepare for calibration, set the fresh air reading, set the response reading, and return to normal operation. It describes calibration using a calibration kit that includes an 81-1138RK calibration cup, calibration gas, sample tubing, and a fixed flow regulator with an on/off knob. WARNING: Not using the recommended 81-1138RK calibration cup, 0.
Setting the Response Reading 1. Screw the regulator into the calibration gas cylinder. 2. Follow the directions in the controller operator’s manual for setting the response (span) reading. 3. When the directions call for exposing the detector to gas, turn the regulator’s on/off knob counterclockwise to open it. Gas will begin to flow. 4. Allow the gas to flow to the detector for 2 minutes. 5. Set the response reading according to the controller operator’s manual. 6.
Parts List Table 5 lists replacement parts and accessories for the multi-point detector. Table 3: Parts List Part Number Description 06-1248RK-03 Calibration kit sample tubing, 3 ft.
Table 3: Parts List Part Number Description 81-0090RK-03 Calibration cylinder, 3-gas mix (CH4/ CO/ O2), 103 liter steel 81-0151RK-02 Calibration cylinder, 25 ppm H2S in nitrogen, 58 liter aluminum 81-0151RK-04 Calibration cylinder 25 ppm H2S in nitrogen, 34 liter aluminum 81-0160RK-02 Calibration cylinder, 4-gas mix (CH4/ O2/ CO/ H2S), 58 liter steel 81-0160RK-04 Calibration cylinder, 4-gas mix (CH4/ O2/ CO/ H2S), 34 liter steel 81-0170RK-02 Calibration cylinder, 5 ppm SO2 in nitrogen, 58 liter