Electrical Connection; Specific Warnings - MBM GF4772V Instructions Pour L'installation

4.
POWER SUPPLY CONNECTIONS

4.3 ELECTRICAL CONNECTION

On the power supply line upstream of the appliance, a locking device must be installed that shuts off the
power whenever it is necessary to operate in safe conditions, such as:
• manual switch of suitable capacity, equipped with fuse valves
• circuit breaker with relevant thermal-magnetic and differential relays.
Obligation to exclude the power supply upstream of the appliance whenever it is necessary to operate
in safe conditions
Electrical connection should be performed in compliance with the IEC regulations, only by authorised and competent
per-sonnel. In the first instance, examine the data shown on the technical data table of this manual, on the serial
plate and on the electrical diagram. The envisaged connection is of the fixed type.
Ahead of each unit it is necessary to install an omnipolar main breaker, having a spacing among contacts of
at least 3mm; example:
- manual breaker of appropriate capacity, complete with fuse valves
- automatic breaker with respective magnetothermal relays.
Earthing
It is essential to earth the unit.To this purpose, it is necessary to connect to an effi cient earthing system the termi-
nals marked with the symbols placed on the line-receiving terminal box. The earthing system should comply with
the law in force.

Specific warnings

The electrical safety of this unit is assured only when it is correctly connected to an effi cient earthing system
as stated in the electrical safety regulations in force; the Manufacturer declines any responsibility for the non-
compliance with these safety regulations.It is necessary to verify this fundamental safety requisite and, in case of
doubt, ask for an accurate testing of the system by professionally qualifi ed personnel.The Manufacturer cannot
be deemed responsible for any damages caused by the lack of unit earthing.
Never interrupt the earth wire (Yellow-Green).
Connection to the different electric distribution networks
On delivery, the appliances must work at the voltage indicated in the diagram below. Any other connection is to be
considered improper and therefore dangerous.
It is absolutely forbidden to change and/or modify the wiring harness configured by the manufacturer,
shown on the product identification plate.
A connection with a wiring harness different from that indicated must be authorized by the manufacturer.
Electrical connection of the cable to the terminal board
Connect the supply cable to the terminal board as described in: "Connection to the electrical power supply".
The diagram and the table (see sect. 7 - Technical characteristics) indicate the possible connections according to
the mains voltage.
L1
N
THIS MANUAL IS THE PROPERT Y OF THE MANUFACTURER AND ANY REPRODUCTION, EVEN PARTIAL, IS PROHIBITED.
A B
L1 L1
L1
L2 L2
L3 L3
L2
N N
L3
N N
A: PHASES: 220/240 V ~ 1N 50-60 Hz
C
L1
L1 B: PHASES: 220/240 V ~ 3 50-60 Hz /
L2
L2
L3 L3
C: PHASES: 380/415 V ~ 3N 50-60 Hz
N
N
N
- 15 - 15
380/415 V ~ 3 50-60 Hz