RKI Instruments 65-2510RK - Manual (Page 9)

65-2502RK/65-2510RK Oxygen Detector • 5
Start Up
This section describes procedures to start up the oxygen 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 instruction manual.
3. Turn on or plug in the incoming power to the controller, then turn on the controller.
4. 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 Fresh Air Reading”.
Setting the Fresh Air Reading
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 oxygen 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 two minutes.
6. Verify a reading of 20.9% oxygen at the controller.
If the display reading is 20.9% oxygen, the oxygen detector is in normal operation and
start up is complete. Proceed to step 7 to disassemble the calibration kit.
If the display reading is not 20.9% oxygen, set the fresh air reading according to the
controller’s operator’s manual.
7. Turn the regulator’s on/off knob clockwise to close it.
8. Unscrew the regulator from the zero air calibration cylinder. For convenience, leave
the sample tubing connected to the regulator and the calibration cup.
9. Unscrew the regulator from the cylinder and remove the calibration cup from the
detector.
10. Store the components of the calibration kit in a safe and convenient place.