RKI Instruments 65-2438 User Manual
Page 13
65-2438 CO Detector • 9
Replacing Components of the CO Detector
This section includes a procedure to replace the CO sensor, the charcoal filter, and the
entire detector assembly. In most cases, it is not necessary to replace the entire detector
assembly.
Replacing the Plug-In CO Sensor
CAUTION:
The sensor contains electrolyte which is a dilute acid. Do not disassemble the sensor
when replacing it with a new one. If sensor electrolyte comes in contact with your
skin, wash affected area thoroughly with soap and water.
1.
Turn off the controller.
2.
Turn off or unplug power to the controller.
3.
Unscrew the detector housing cap from the detector housing body. Make sure not to
lose the cap gasket.
4.
Unplug and remove the CO sensor with the boot and charcoal filter attached.
5.
Remove the rubber boot and charcoal filter from the old sensor.
6.
Install the rubber boot with charcoal filter onto the replacement sensor’s face.
7.
Carefully plug the replacement sensor into the four-socket pattern that is located in
the detector housing.
8.
Make sure the cap gasket is in place and screw the detector housing cap back onto the
detector housing body.
9.
Turn on or plug in power to the controller.
10. Turn on the controller and place into normal operation.
CAUTION:
Allow the replacement sensor to warm up for 5 minutes before you continue with the
next step.
11. Calibrate the replacement sensor as described in the Calibration section of this
manual.
Replacing the Charcoal Filter
1.
Turn off the controller.
2.
Turn off or unplug power to the controller.
3.
Unscrew the detector housing cap from the detector housing body.
4.
Unplug and remove the CO sensor with the boot and charcoal filter attached.
5.
Remove the rubber boot that secures the charcoal filter to the CO sensor.
6.
Remove the charcoal filter from the rubber boot.
7.
Place the replacement filter in the rubber boot in the same position as the filter you
removed in the previous step.
8.
Reinstall the rubber boot with charcoal filter to the CO sensor.
9.
Carefully plug the replacement sensor into the four-socket pattern that is located in
the detector housing.
10. Make sure the cap gasket is in place and screw the detector housing cap back onto the
detector housing body.