RKI Instruments 65-2515RK - Manual (Page 9)

65-2515RK Oxygen Detector • 5
WARNING: To maintain the explosion proof classification of the oxygen detector/
junction box combination, a conduit seal must be used within 18 inches of
the junction box conduit hub used for wiring to the controller.
5. Connect the wires to the terminals opposite the detector leads using the terminal strip
in the junction box.
CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the
detector. You will connect the opposite end of the cable’s drain wire at the controller.
6. Reinstall the junction box cover to the junction box.
7. Route the cable or wires leading from the oxygen detector through one of the conduit
hubs at the controller housing.
CAUTION: Do not route power and detector wiring through the same conduit hub. The power
cable may disrupt the transmission of the detector signal to the controller.
8. Connect the wires to the applicable controller terminal strip as shown in Figure 3
above. See the controller operator’s manual and the controller’s detector head
specification sheet for wiring information specific to a controller.
9. 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 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 operator’s 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, “Verifying/Setting the Fresh Air Reading”.
Verifying/Setting the Fresh Air Reading
WARNING: Do not remove the detector housing cap or junction box cover while the
circuits are energized unless the area is determined to be non-hazardous.
Keep the detector housing cap and junction box cover tightly closed during
operation.