Wega WBAR EVD User Manual

TECHNICIANS' manual
- English -
39 di 52
Problem Cause Action
COFFEE IS BEING DISPENSED
INCORRECTLY
THE COFFEE DOSE IS
NOT CORRECT
THE DOSE BUTTON
LED IS FLASHING
• The volumetric dosing device connection is
faulty.
• The electronic control unit connection is
faulty.
• The volumetric dosing device connector is wet.
• The volumetric dosing device is faulty: the LED
does not flash during the dispensing process.
• The coee has been ground too finely: there
isn't enough water flow in the dosing device.
• The non-return valve is losing pressure (the
dose is too small).
• The expansion valves are losing pressure (the
dose is too small).
• Water is leaking from the group solenoid valve
when coee is being dispensed or when in
standby.
• The volumetric dosing device is partially ob-
structed.
• Check that the volumetric dosing device con-
nector has been connected properly.
• Check that the connector (8/10 poles) has
been connected correctly to the electronic
control unit.
• Remove the volumetric dosing device connec-
tor and thoroughly dry the contacts.
• Replace the heads of the volumetric dosing
device or replace the whole dosing device.
• Suitably adjust the grind and check the grind-
ers, if necessary.
• Check and replace the non-return valve, if nec-
essary.
• Check and replace the expansion valves, if
necessary.
• Clean and replace the solenoid valve, if neces-
sary.
• Clean or replace the volumetric dosing device.
THE LEDS OF ALL THE
PUSHBUTTON PANELS
ARE FLASHING
• The water stops being automatically filled af-
ter a few minutes.
• The timeout device has cut in.
• There is no water in the mains.
• The automatic level device valve is closed.
• Some of the hoses in the circuit are clogged.
• The probe and/or the mass are disconnected.
• Turn the machine o and then back on.
• Open the water mains valve.
• Open the automatic level device valve.
• Check and replace the faulty hoses.
• Check and restore the connections.
THE PUMP WORKS ONLY
WITH THE MANUAL
DISPENSING BUTTON
• The pump fuse of the electronic control unit
is burned out.
• Replace the pump fuse of the electronic con-
trol unit (10A).
COFFEE IS BEING DISPENSED
INCORRECTLY
THE COFFEE DOSE IS
NOT CORRECT
• The volumetric dosing device connection is
faulty.
• The electronic control unit connection is
faulty.
• The volumetric dosing device connector is wet.
• The volumetric dosing device is faulty: during
dispensing the dosing device LED does not
flash.
• The coee has been ground too finely: not
enough water is flowing into the dosing de-
vice.
• Water leakage from the group solenoid valve
during coee dispensing or when in stand-by.
• The volumetric dosing device is partially ob-
structed.
• Check that the volumetric dosing device con-
nector has been connected properly.
• Check for proper connection of the electronic
control unit connector.
• Remove the volumetric dosing device connec-
tor and thoroughly dry the contacts.
• Replace the heads of the volumetric dosing
device or replace the whole dosing device.
• Suitably adjust the grind and check the grind-
ers, if necessary.
• Clean and replace the solenoid valve, if neces-
sary.
• Clean or replace the volumetric dosing device.
7.8 Warnings
Warning Description
BUTTON 10 LED
Flashes every 5 seconds
Frothed milk nozzle probe is disconnected
Selected dose button is flashing No flow meter impulses
1
2
3
4
5
AUTO
STEAM
STOP
PROG.
6
7
8
9
10
AUTO
STEAM
STOP
PROG.

Wega WBAR EVD Specifications

General

Brand	Wega
Model	WBAR EVD
Category	Coffee Maker
Language	English