h
Before performing any operation, turn off the power. The installation of the unit can be performed only by qualified
personnel in accordance with the regulations in force. Do not connect the unit to a supply circuit unless the installation is
completed.
Check carefully the supply voltage marked on the label. Incorrect Power Supply Voltage may damage the unit. Do not
overload the terminal connection, as it may cause a fire or electrical shock hazard. Supply voltage tolerance= ±10%.
An all-pole mains switch with an opening distance between the contacts at least 3 mm in each pole must be incorporated
in the electrical installation. The switch must be equipped with protection against the fault current towards the ground
(differential) and the overcurrent (magnetothermal, maximum 15A). It must be very quickly recognizable and readily
accessible. A suitable blow fuse must also be installed for protection.
For connection to the mains, use a multipolar cable having minimum 3x1,5 mm
2
(15 AWG). The main cable must be at
least protected by an ordinary PVC sheath.
Fasten all the cables inside the housing with cables ties or other fixing means to avoid the electrical contact with
surrounding parts in case that terminal blocks screw off.
Electrical connections (such as plugs and cords) must be protected from potential hazardous environmental factors (e.g.
foot traffic, hitting objects).
Ensure that the unit case is properly earthed, connecting all the earth ground studs. Earth cable should be about 10mm
longer than the other cables on the connector, in such way that it won't be accidentally disconnected if the cable is
stretched or pulled.
When leaving the unit unused for long periods, disconnect supply cables.
b
Do not connect the unit to a supply circuit unless the installation is completed.
It is recommended that all the connections are performed and tested on a safe area laboratory before installing on field.
If antifreeze and/or detergent additives have to be used, they must have a kindling point 50° C higher than the maximum
permitted operating temperature. Do not use liquid that could cause ignition of the atmosphere.
The electric connections between the solenoid valve and the Pan&Tilt unit must be housed in an explosion-proof junction
box, suitable to the explosive atmosphere in which the units will be used.
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