18
Electrical connections
WARNING! Electrical connection of the machine
to the power supply must ONLY be carried out
by a qualified electrician.
WARNING! Electrical lines must be established
in full respect of CEI standards.
WARNING! Before establishing the electrical
connection, make sure that the power supply
is off. Also ensure that it is not possible to
reconnect the power during the operation.
WARNING! The power supply voltage must be
± 10%
to carry out the electrical connections of the machine to the
power supply, carry out the following procedures:
•
use suitable equipment to check the efficiency of the
grounding system;
•
check that the voltage and network frequency
correspond to those of the machine (see identification
label);
•
to access the electrical panel it is necessary to remove
the front panel of the unit by rotating the closing blocks,
indicated by the arrows, by one quarter of a turn (in the
JU** models the electrical panel is situated in the upper
part of the unit);
•
pass the cables inside using the power supply cable inlet
D7
a
;
Internal protection panels
the fan compartment and electrical heaters are protected
by a sheet metal covering for safety reasons and to allow
the opening of the external panels without interfering with
the safety devices on the unit.
JU**
JU**
JD**
D7
a
/
c
D7
b
/
d
D7
a
/
c
D7
b
/
d
•
refer to the wiring diagram and connect the cable to the
main switch D5.
G
12
D
D7
b
/
d
D5
e
D
D5
JD**
