User's Manual

12
LIAIRE02-01
Warnings for installation
AUTEC - Air series
3.3 Positioning the antenna
The antenna is inside the receiving unit. Hence, install the receiving unit
towards the working area, so that shields, structures or materials do not
obstruct the radio link. In particular, the receiving unit must be placed at
least 50 cm far from metal objects in its surroundings and never inside
closed metal containers.
WARNING: If the receiving unit is shielded by metal structures or is installed
inside metal cabinets, use the appropriate extension kit for the antenna. In
this case, install the antenna in a vertical position, and if possible towards
the working area.
If this warning is disregarded, the radio remote control working range may be reduced.
3.4 Wiring
The power supply of the receiving unit must be connected using an omnipolar
switch with a switch-contact gap of at least 3 mm, that allows power supply
disconnection during installation, wiring and/or maintenance operations.
The receiving unit's power supply must be protected against short circuit
by means of an external device (e.g. fuse, thermal magnetic circuit breaker).
Such device must be able to interrupt the maximum fault current (including
the short circuit current) allowed in the circuit.
Receiving units powered with AC and exposed to transient overvoltages
exceeding those of overvoltage category II, require additional protections
that must be provided outside of the receiving units themselves.
If the receiving unit is powered with direct current, the power supply must
come:
- from a power supply unit with a safety isolating transformer, or
- from a 12/24V battery.