Macurco TX-12-AM Instructions D'utilisation page 19

Operation Test
Check that the green TX-12-AM status indicator LED light is illuminated continuously. If not, do not proceed with the tests. If the unit is
in error mode contact your local representative or Macurco technical service representative for information on resolving the problem.
1. Remove the single screw in the middle of the front cover of the TX-12-AM.
2. Remove the front cover.
3. Observe the LED light on the front of the TX-12-AM.
4. If the light is solid green proceed to step 6.
5. If the green status indicator LED light is off or flashing, refer to the General section above.
6. Locate the switch labeled ENTER/TEST on the left side of the printed circuit board. Push the Test switch once.
7. The TX-12-ND will step through a cycle test:
a) The display progresses through the brt (buzzer test), Art (alarm relay test), Frt (fan relay test) then 42t (4-20
mA output test).
b) During the first 3 seconds of the test cycle, the Buzzer will sound
c) During the next 5 seconds of the test cycle, the Alarm relay will be closed, so any devices connected to that
relay will be tested.
d) The Fan relay will be activated for the next 1 minute of the test, so if the fan circuits are wired in the normal
manner, the fan should run.
e) The 4-20mA output will then ramp up from 4 to 16 mA over the next 130 seconds of the test, so if the circuit is
wired in the normal manner, the control panel or building automation system should respond.
f) At the end of the test cycle, the light will turn green and be on steady (Normal Operation), the Fan & Alarm
relay will be in standby mode and the 4-20 mA output will return to 4 mA (in clean air).
8. When testing is completed reassemble the unit or units.
Manual Operation Test
This option gives the user the opportunity to manually initiate an individual test for each relay, the analog output and the sensor
response to gas. From normal operation mode press the Next button 2 times to get to the Test Mode (tSt). Press the Enter button once
to get into the Test Menu. Press the Next button to scroll through the five test options and press Enter to initiate the selected test. Note
that if the relay or 4–20 mA output has been disabled, the test selection will not be displayed in the test menu.
bUZ – Buzzer Test, 3 seconds
Art - Alarm Relay Test, 5 seconds
Frt - Fan Relay Test, 60 seconds
42t - 420 loop test, 130 seconds
gtS - Gas Test, 3 minutes (no output to the panel during the gas test)
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