Calibration; Replace The Fuse - TechGrow T-Micro Manual

c. Switch DIP switch 1 to position 1 (ON) with a
pen or small screwdriver.
d. The sensor is ready to be calibrated.

9.3 Calibration

Procedure:
1. Unplug the T-micro from the wall socket.
2. Disconnect the CO source from the T-Micro.
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3. Ensure that a CO sensor is connected to one of the
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two UTP connections.
4. Insert the T-Micro plug into the wall socket again.
5. During start-up (first 10 seconds) briefly press the
small button in the hole at the back of the T-Micro
with a thin object, like a paper clip.
After a few seconds the display shows:
CAL 10
Countdown to CAL 0 (zero).
Then the displays shows:
Start?
6. Press the button at the back again with a paperclip
and hold it for about 10 seconds until "Starting"
appears in the screen.
Starting
Now, calibration is started and will take about 20
minutes.
7. After calibration, turn DIP switch 1 back to position
0.
8. Screw the sensor closed again and repeat the
sensor check as described in section 9.1.

10. Replace the fuse

If the T-Micro is overloaded or in the event of a short
circuit, the internal fuse will break. To replace the fuse
you have to open the T-Micro. Go through the
following steps:
1. Remove the plug from the socket.
2. Open the housing by unscrewing the 4 screws on
the back of the T-Micro.
3. Locate the fuse and remove it.
4. Insert a new 4 amp fuse.
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5. Screw the 4 screws to close the housing.
6. Your T-Micro is ready for use again.
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