RKI Instruments 61-0198RK - Manual (Page 15)

61-1007RK/61-0198RK Carbon Dioxide Detector • 11
lose the cap gasket.
4. Unplug and remove the plug-in IR CO
2
sensor.
5. Carefully plug the replacement sensor into the socket pattern that is located in the
detector housing.
6. Make sure the cap gasket is in place and screw the detector housing cap back onto the
detector housing body.
7. Turn on power to the controller.
8. Turn on the controller and place it into normal operation.
CAUTION: Allow the replacement sensor to warm up for 5 minutes before you continue with the
next step.
9. Calibrate the detector as described in “Calibration” on page 12.
Replacing the CO
2
Detector
NOTE: In most cases it is only necessary to replace the IR CO
2
plug-in sensor.
1. Turn off the controller.
2. Turn off power to the controller.
3. If the detector is installed directly on a controller, open the controller door.
If the detector is installed remotely from a controller in a junction box, remove the
junction box cover.
4. If the detector is installed directly on a controller, disconnect the detector leads from
the detector terminal strip in the controller. Note the position of the color-coded leads
as you remove them.
If the detector is installed remotely from a controller in a junction box, disconnect the
detector leads from the terminal block in the junction box. Note the position of the
color-coded leads as you remove them.
5. Unscrew the detector from the controller conduit hub or junction box conduit hub.
6. Guide the detector leads of the replacement detector through the controller conduit
hub or junction box conduit hub, then screw the mounting threads of the detector into
the hub. If necessary for environmental conditions, apply thread sealant or teflon tape
to the hub and/or detector threads to seal them.
7. If the detector is installed directly on a controller, connect the detector leads to the
appropriate detector terminal strip terminals. See Figure 4 on page 6 for wiring to a
generic controller. See the controller operator’s manual and the controller’s detector
head specification sheet for the 61-0198RK detector for wiring specific to your
controller.
If the detector is installed remotely from a controller in a junction box, connect the
detector leads to the terminal block the same way the old detector was wired (see
Figure 4 on page 6). See the controller operator’s manual and the controller’s detector
head specification sheet for the 61-1007RK detector to verify the connections to the
controller are correct.
8. If the detector is installed remotely from a controller in a junction box, reinstall the
junction box cover.