RKI Instruments 61-1000RKSS-05 - Manual (Page 10)

6 • 61-1000RKSS-05 Combustible Gas Detector
Start Up
This section describes procedures to start up the combustible gas 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 power to the controller.
4. Turn on the controller.
5. Verify that the controller is on and operating properly. Refer to the controller
operator’s manual.
CAUTION: Allow the detector to warm up for 5 minutes before you continue with the next
section, “Setting the Zero Reading”.
Setting the Zero Reading
WARNING: Do not remove the junction box cover while the circuits are energized
unless the area is determined to be non-hazardous. Keep the junction box
cover tightly closed during operation.
NOTE: If you can verify that the detector is in a fresh air environment (environment
known to be of normal oxygen content and free of toxic and combustible gases),
it is not necessary to apply zero air when verifying or setting the fresh air
reading.
The procedure below describes applying zero emission air, usually called zero air, using a
calibration kit that includes a calibration cup, calibration gas, sample tubing, and a fixed
flow regulator with an on/off knob. RKI Instruments, Inc. recommends using a 0.5 LPM
(liters per minute) fixed flow regulator.
1. Screw the calibration cup onto the bottom of the detector.
2. Screw the regulator into the zero air calibration cylinder.
3. Use the sample tubing to connect the regulator to the calibration cup.
4. Turn the regulator’s on/off knob counterclockwise to open it. Gas will begin to flow.
5. Allow the gas to flow for one minute.
6. Verify a reading of 0% LEL at the controller.
If the display reading is 0% LEL, start up is complete. The combustible detector is in
normal operation. If the display reading is not 0% LEL, continue with step 7.
7. Perform a zeroing operation at the controller. See the controller operator’s manual for
directions.
8. When the directions call for exposing the detector to zero air, turn the regulator’s on/
off knob counterclockwise to open it.