Electric Connection; Connection To Supply Voltage; Earthing; Main Switch - Chamberlain LiftMaster BARS1 Mode D'emploi

9

Electric connection

The barrier must be connected to grounded mains. The connection must be executed
professionally and must comply with the relevant norms and guidelines of the installation site.
The offered models are partially wired ex works in their standard versions. Special edition models
may differ from this pattern and may include other controls.
9.1

Connection to supply voltage

The power supply is connected to the main switch situated on the inside of the casing. The strain
relief for the cable of the supply line has to be executed on site and can be done as shown.
9.2

Earthing

The grounding is connected to the specially designated clamp and must comply with the relevant
guidelines of the unit's installation site.
9.3

Main switch

All standard models are equipped with a main switch, which disconnects the voltage supply at all
poles. It serves to ensure safe handling when maintenance and inspection work is executed or in
case of shut down. If unit is not in operation the switch must also be labelled with the necessary
information in order to prevent from being switched accidentally.
9.4 Handling in case of power failure
If the power supply to the barrier is cut and there is no alternative 230Volt supply
connected the barrier will stop. Programmed settings remain stored. The barrier is able
to operate again within seconds after switching the power supply back on.
Note: if barrier is in completely open position it will close automatically after programmed
time has elapsed. If barrier is positioned between the limit switches then a signal is
needed to open or close the barrier.
9.5

Electrical protection of unit

• The electrical backup of the entire unit must be done with 5A
• The control is equipped with a 5A glass fuse (5x20)
• The motor has an automatic protection against overheating (after cooling down the motor
switches itself back on : switches off at 140°C and switches back on at approx. 75°C
25/40
Notes