RKI Instruments 65-2423RK-05 User Manual
Page 13
65-2423RK-05 H
2
S Detector • 9
Replacing Components of the H
2
S Detector
This section includes a procedure to replace the H
2
S sensor and one to replace the entire
detector assembly. In most cases, it is not necessary to replace the entire detector assembly.
Replacing the 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.
4.
Unplug and remove the H
2
S sensor with the rubber boot and spacer attached.
5.
Remove the rubber boot and spacer from the old sensor.
6.
Install the spacer and rubber boot onto the replacement sensor’s face.
7.
Carefully plug the replacement sensor into the socket pattern that is located in the
detector housing.
NOTE:
Match the sensor’s male pins with the four female sockets as you plug the sensor
into the sockets.
8.
Screw the detector housing cap onto the top section.
9.
Turn on power to the controller.
10. Turn on the controller.
CAUTION:
Allow the replacement sensor to warm up for 5 minutes before you continue with the
next step.
11. Calibrate the detector as described in “Calibration” on page 11.
Replacing the H
2
S Detector
NOTE:
In most cases, it is only necessary to replace the H
2
S sensor.
1.
Turn off the controller.
2.
Turn off or unplug incoming 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.