© LNS FOX Instruction manual series WS (USA) pag. 14 of 28 - rev. 06-2014
4.4. Electrical connections
“Personal safety – integrity of the unit”
Conduit electrical connections should be made by a qualified electrician and must comply
with electrical codes and safety norms Be sure that power is cut off before wiring the unit
The unit is equipped with a protective bonding circuit (in accordance with EN 60204-1 1998 norm). In
order to obtain proper protection from in direct contacts, the power line must include an automatic
circuit breaker. This will ensure an automatic cut off in case of line failure (in accordance with
prescription 413.1 norm IEC 364-4-41)
Main electrical connection, unless otherwise specified, must be done with a 3P + PE wire (3 poles + ground)
according to regulating norms.
As standard equipment, purifiers are supplied with an electrical cable 4Gx1.5 mm
2
5 m long
As an alternative, they can be supplied with a 5Gx1.5 mm
2
cable
It the cable must be replaced with one with different characteristics:
-
Loosen the cable gland located on the rear near the identification plate as shown in fig. 11.
-
Loosen the 4 front screws on the control panel and remove the front cover
-
Loosen the screws on the cable on the motor protector and on the earth terminal.
-
Pull the original electrical cable from the sheath.
-
Insert the new cable inside the protective sheath.
-
Fit a pin fork terminal on the three phase terminals of the new power supply cable and a spade terminal on
the protection terminal.
-
Insert the protection cable in the yellow/green terminal and tighten the screw
-
Insert three phase wires on the connecting terminals of the motor protector switch L1 – L2 – L3 and tighten
them with max. torque of 2 Nm.
-
Make sure the setting of the motor protector switch is congruent with the electrical power data on the plate
(unless subsequent changes have been made, the motor protector switch is normally set during factory
tests).
-
Reassemble the front cover and loosen the screws
-
Tighten the rear cable gland check that the cable is sealed securely
-
Connect the power supply cable to the mains supply using proper components that comply with the
applicable standards.
“Personal safety – integrity of the unit”
Install a protection device that ensures automatic power cut off in case of failure to the
unit or to the power supply.
-
(Fig.11) Power supply inlet
(Fig. b) Removal of control panel box (Fig. c) electrical connection
(Fig. d) Setting of thermal switch
(Fig. e) Tight gland
(Fig. f) Impeller rotating direction
