RKI Instruments 61-1000RK - Manual (Page 10)

6 • 61-1000RK 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.
CAUTION: If you suspect the presence of combustible gas in the monitoring environment, use
the zero air calibration cylinder to introduce “fresh air” to the detector and verify an
accurate zero reading.
1. Verify that the detector is in a fresh air environment (environment known to be free of
combustible gas and of normal oxygen concentration, 20.9%).
2. 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 3.
3. Perform a zeroing operation at the controller. See the controller operator’s manual for
directions.