RKI Instruments 65-2615RK-05-04 - Manual (Page 41)

65-2615RK-05-04 M2 Transmitter Operator’s Manual 36
6. Install the spacer and rubber boot 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. Screw the calibration adapter/splash guard back onto the detector housing cap.
10. Turn on or plug in power to the M2.
CAUTION: Allow the replacement sensor to warm up for 5 minutes before you continue with the
next step.
11. Calibrate the transmitter as described in the “Calibration” on page 33.
Replacing the H
2
S Detector
NOTE: In most cases, it is only necessary to replace the plug-in H
2
S sensor.
1. Turn off or unplug power to the M2.
2. Remove the detector junction box cover.
3. Unscrew the calibration adapter/splash guard from the detector housing cap.
4. Disconnect the detector leads from the terminal block in the detector junction box.
Note the position of the color-coded leads as you remove them.
5. Unscrew the detector from the detector junction box.
6. Guide the detector leads of the replacement detector through the bottom conduit hub
of the detector junction box, then screw the mounting threads of the detector into the
conduit hub. If necessary for environmental conditions, apply thread sealant or teflon
tape to the hub and/or detector threads to seal them.
7. Connect the detector leads to the terminal block the same way the old detector was
wired (see Figure 6 on page 13).
8. Screw the calibration adapter/splash guard onto the new detector housing cap.
9. Reinstall the detector junction box cover.
10. Turn on or plug in power to the M2.
CAUTION: Allow the replacement detector to warm up for 5 minutes before you continue with
the next step.
11. Calibrate the replacement detector as described in “Calibration” on page 33.