11
© by NECTA VENDING SOLUTIONS SpA 07-2002 148 03
CONNECTING TO THE POWER SUPPLY
The vending machine is designed to operate under a
single-phase 230 V~ voltage and is protected by 15 A
fuses.
Before making the connection, ensure that the rating
corresponds to that of the power grid, and more specifi-
cally:
- the supply voltage rating must be within the range
recommended for the connection points;
- the main switch should be capable of withstanding the
peak load required, and at the same time ensure proper
omnipolar disconnection from the power grid with an
opening gap of the contacts of at least 3 mm.
The switch, the power outlet and the plug must be
located in an easily accessible position.
The electrical safety of the machine is ensured only when
it is correctly earthed according to the safety standards
in force.
This fundamental safety requirement must be duly
verified, and if in doubt the system must be carefully
tested by qualified technicians.
The power supply cable is of the type with a fixed plug. Any
replacement should be carried out by qualified personnel
only, using exclusively cables of the type HO5 RN - F or
HO5 V V-F or H07 RN-F with a section of 3x1-1.5 mm
2
.
Do not use adapters, multiple sockets and/or exten-
sions.
Before switching the machine on, be sure it is correctly
connected to the water mains and the cut-off valve is open.
THE MANUFACTURER DECLINES ALL RESPONSI-
BILITY FOR ANY DAMAGE CAUSED BY NON-COM-
PLIANCE WITH THE ABOVE MENTIONED PRECAU-
TIONS.
DOOR SWITCH
When opening the door a special microswitch disconnects
the power from the machine electrical system.
To energize the system with the open door, simply insert
the special key into the slot (see Fig. 2).
With the door open there is no access to energised
parts. Inside the machine, the only parts that stay
energised are those protected by covers and carrying
a plate with the warning “Disconnect the power before
removing the protective cover”.
Before removing such covers disconnect the machine
from the power grid.
The door can be closed only after removing the key from
the door switch.
CONNECTING THE MACHINE
TO THE WATER MAINS
The machine must be connected to the drinking water
mains. The water pressure must be 5 to 85 N/cm
2.
Run some water from the mains until it is clear and without
impurities.
Use a hose capable of withstanding the water mains
pressure and suitable for use with foodstuff (min. inside
diameter of 6 mm) to connect the water supply to the fitting
(1/4" gas) of the water inlet solenoid valve (see Figure 14).
1 - Water inlet fitting (1/4" gas)
2 - Water supply hose
3 - Overflow hose
4 - Inlet hose fitting
Fig. 14
A good practice is to install the water supply tap
outside the machine in an easily accessible position.
OVERFLOW DEVICE
The water inlet solenoid valve (see Fig. 14) is equipped
with an overflow device which mechanically stops the
water inlet if there is a malfunction in the solenoid valve
or in the boiler water level control device.
To restore normal operation, proceed as follows:
- drain the water contained in the overflow hose;
- shut off the water supply using the tap outside the
machine;
- loosen the nut which secures the solenoid valve supply
hose to relieve the water mains residual pressure and
then tighten again (see Fig. 14);
- open the tap and switch the machine on.
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