16 • 65-2422RK-05 H
2
S Transmitter
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 top
section of the detector housing.
NOTE:
Match the sensor’s male pins with the four female sockets as you plug the sensor into
the socket.
8. Screw the bottom section of the detector housing onto the top section.
9. Turn on or plug in incoming power at the power source end.
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 replacement sensor as described in the Calibration section of this manual.
Replacing the Amplifier
1. Turn off the controller.
2. Turn off or unplug incoming power at the power source end.
3. Remove the junction box cover.
4. Disconnect the detector leads from the detector terminal strip.
5. Unscrew and remove the two screws that secure the amplifier to the junction box.
The screws are at the top left and bottom right of the amplifier.
6. Remove the amplifier.
7. Place the new amplifier in the same position as the old amplifier.
8. Use the two screws you removed in step 5 to secure the new amplifier to the junction box.
9. Verify that the jumper block is installed over the
TOXIC
selector of the amplifier type
selector as shown in Figure 3.
10. Reconnect the wiring from the controller to the interconnect terminal strip as shown in
Table 2 and Figure 3.
Table 2: Reconnecting the H
2
S Amplifier to a Controller
Amplifier Interconnect
Terminal Strip
Controller Transmitter
Terminal Strip (typical)
4/20 FB
4 -20 (FB)
24V +
+ V (11 - 30 VDC)
