Fancom ATM80, Manual

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4. Service
The following components of the AT(M) can be replaced:
● AT motor
● DRS feedback sensor
4.1 Replace the AT motor
For correct operation carry out instructions in the given order. If not, readjustment will be necessary.
1. Remove the plug from the connection box.
2. Place the entire AT(M) on the ground.
3. Unscrew the lid at the top and remove it. The AT motor can now be reached.
4. Disconnect the wiring from the AT motor (pay attention to the colour sequence) and then remove the AT motor.
5. Open the control dampers manually; check for smooth running.
6. Place the new AT motor and connect in the same way.
7. Replace the lid and tighten the screws.
8. Replace the unit.
9. Reconnect the plug to the connection box.
10. Check the AT(M) using the connected computer.
4.2 Replace the DRS feedback sensor
Ensure that there is a control of 100%, the AT control damper should be completely open. Also the output voltage
must be 0Vdc. If the AT control damper completely open, follow the procedure below.
1. Remove the plug from the connection box.
2. Place the entire AT(M) on the floor.
3. Unscrew the lid at the top and remove it. The AT motor and the DRS feedback sensor are now accessible.
4. Remove the AT motor, without disconnecting any connections. Position the motor so that the screw connection
of the DRS feedback sensor can be reached.
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