RKI Instruments 65-2321RK - Manual (Page 16)

12 • 65-2321RK Oxygen Transmitter
8. Connect the detector leads to the appropriate detector terminal strip terminals.
Connect the white wire to the terminal labelled Oxy + and the green wire to the
terminal labelled Oxy -. See Figure 4 on page 7 for the detector wiring connections to
the amplifier.
9. Reinstall the detector terminal strip into its socket.
10. Reinstall the junction box cover.
11. Turn on or plug in power to the controller.
12. Turn on the controller and place it into normal operation.
CAUTION: Allow the replacement detector to warm up for 5 minutes before you continue with
the next step.
13. Calibrate the replacement detector as described in “Calibration” on page 13.
Replacing the Amplifier
1. Turn off the controller.
2. Turn off or unplug power to the controller.
3. Remove the junction box cover.
4. Unplug the detector terminal strip and controller terminal strip from their sockets.
You may leave the wires connected to the terminal strips.
5. Unscrew and remove the screw with the flat and lock washers that secures the
amplifier to the junction box.
6. Remove the old amplifier.
7. Install the new amplifier into the junction box with the screw, lock washer, and flat
washer you removed in Step 5 above. A foam gasket that orients the amplifier and
keeps it from rotating is installed on the bottom of the amplifier. Make sure the
amplifier is seated flat in the junction box.
8. Install the detector and controller terminals strips into their sockets on the new
amplifier as shown in Figure 4 on page 7. If controller leads or detector leads were
removed during this procedure, refer to Figure 4 on page 7 for the detector and
amplifier connections.
NOTE: When a transmitter is first powered up with a new amplifier, the initial output
may be either high or below zero depending on the setting of the zero pot. Be
sure to make arrangements so that this does not cause unwanted alarms.
9. Turn on power to the controller.
10. Turn on the controller and place it into normal operation.
11. Allow the transmitter to warm-up for 5 minutes.
12. Calibrate the transmitter as described in “Calibration” on page 13 of this manual.