Wega Mininova Use And Maintenance Manual For The Technician

25
Technical manual
ENGLISH
NERO
C:0 M:0 Y:0 K:100
ROSSO
C:0 M:100 Y:100 K:0
VERDE
C:100 M:0 Y:100 K:0
4 Boilers
The boiler is constructed in steel (1) (version 1GR)
or copper sheet metal (version 2GR) , to which the
heat exchangers (3) are assembled which in turn are
connected to the delivery group. During delivery, cold
water is sent to the inside of the exchanger by means of
the motor pump. Inside the heat exchanger, cold water
and the pre-existing hot water are mixed, thus obtaining
optimal water temperature for coee infusion.
The water is heated in the boiler by means of an
electrical heating element immerged in the water (2).
1
2
!
Do not replace thhe heating element with a higher
power one. Before making any modication contact
the manufacturer.
1
3
2
Version 1GR
Version 2GR
5 Control of the pressure in the boiler
Versions EMA - EPU:
The pressure switch (1) makes it possible to control
boiler pressure by activating or bypassing the heating
element in the boiler.
Version EVD:
The pressure in the boiler is controlled by an
appropriate NTC sensor place on the boiler (2). This
sensor continously sends information to the electronic
control unit, which as a result, active or less the heating
element by using a power triac.
1
2
6 Automatic Water Entry
The Automatic Water Entry system is for checking the
boiler level. It is composed of:
• level probe inserted in the boiler (1) composed of a
stainless steel rod;
• electronic control unit (2);
• the pump allows the raising
of the pressure of the inow
water at a pressure of 8-9 bar
for the delivery.
The electronic control unit
controls the water level in the
boiler. When the water level
drops down, the contact with
the probe is interrupted, the
electronic control unit sends
a signal to the lling solenoid
valve, which activates the motor pump and the lling
solenoid valve, thus restoring the level of water in the
boiler.
To avoid possible flooding due to machine
malfunctions or leaks in the hydraulic circuit, the
electronic control unit includes a timing device
“Time-out” that cuts off automatic filling after a
maximum operating time (2 minutes).
!
In versions with the inner tank, the water lack is reported,
in version EVD by the ashing of led STOP/PROG. of the
push button panel or by the specic warning light in
versions EMA-EPU.
1
2

Wega Mininova Specifications

General

Brand	Wega
Model	Mininova
Category	Coffee Maker
Language	English