Overflow Device; Connecting The Machine To The Power Supply - Koro Espresso UL 120V Manuel D'installation, D'utilisation Et D'entretien

OVERFLOW DEVICE

The water inlet solenoid valve (see Fig. 13) 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. 13);
- open the tap and switch the machine on.
CONNECTING THE MACHINE TO THE
POWER SUPPLY
The machine is designed to operate under a single-phase
120 V~ voltage and is protected by 15 A fuses.
Do not connect the machine to a circuit operating at
more than 150 V to ground.
Before making the connection, ensure that the rating
corresponds to that of the power grid, and more specifically:
- 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, so that the
cable can be disconnected in the event of intervention..
The power supply cable is of the type with a fixed plug. Any
replacement of the power supply cable (see Fig. 14) should
be made by qualified personnel only, using cables of the
type UL SJTO 3x16 AWG.
© by N&W GLOBAL VENDING SpA
Fig. 14
1 - Connection terminal strip
2 - Cable clamp
3 - Cable from the mains
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.
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 RESPONSIBIL-
ITY FOR ANY DAMAGE CAUSED BY NON-COMPLI-
ANCE WITH THE ABOVE MENTIONED SAFETY RULES.
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