65-2405RK-05-04 Combustible Gas Transmitter • 17
8. Install the amplifier into the junction box with the screw, lock washer, and flat washer you
removed in Step 5 above.
9. Install the detector and controller terminal strips into their sockets on the new amplifier as shown
in Figure 5 on page 13. If controller leads or detector leads were removed during this procedure,
refer to Table 3 and Table 4 below.
NOTE:
When a transmitter is first powered up with a new amplifier, the initial output may be either
high or below zero depending on the setting of the zero pot. Be sure to make arrangements so
that this does not cause unwanted alarms.
10. Turn on or plug in power to the controller.
11. Turn on the controller and place it into normal operation.
12. Allow the transmitter to warm-up for 5 minutes.
13. Calibrate the transmitter as described in “Calibration” on page 19 of this manual.
Table 3:Reconnecting the Amplifier
to the Controller
Amplifier Controller
Terminal Strip
Controller
Transmitter Terminal
Strip (typical)
PWR/SIG “-”
- (DC -)
PWR/SIG “S”
S (4 - 20 mA In)
PWR/SIG “+”
+ 24V
Table 4:Reconnecting the ppm
Detector to the Amplifier
Amplifier Detector
Terminal Strip
Detector Lead
DETECTOR “R”
RED
DETECTOR “W”
WHT
DETECTOR “G”
GREEN
DETECTOR “B”
BLK
