Wega 1GR Series, Руководство по эксплуатации и обслуживанию

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39
of
68
TECHNICIANS manual
ENGLISH
Problem Cause Action
EVD version:
COFFEE DISPENSING IS NOT
CONFORMANT
THE COFFEE DOSE IS NOT MET
THE LED OF THE DOSE BUTTON FLASHES
t The connection of the volumetric dosing device is
faulty.
t The connection of the electronic control unit is faulty.
t
The connector of the volumetric dosing device has
humidity on it.
t
The volumetric dispenser is faulty: the LED does not
flash during dispensing.
t
The coffee is ground too finely: there is not sufficient
water flow in the dispenser.
t
The non-return valve loses pressure (the dose is
too small).
t
The expansion valves lose pressure (the dose is too
small).
t
Water leakage from the group solenoid valve during
coffee dispensing or when in stand-by.
t
The volumetric dosing device is partially obstructed.
t Check for proper connection of the volumetric dosing
device connector.
t Check for proper connection of the 8/10-pin connec-
tor of the electronic control unit.
t Remove the connector of the volumetric dosing
device and thoroughly dry the contacts.
t Replace the heads of the volumetric dosing device
or replace the dosing device.
t Adjust the grinding suitably and check the grinders,
if necessary.
t Check and replace the non-return valve, if necessary.
t
Check and replace the expansion valves, if necessary.
t Clean and replace the solenoid valve, if necessary.
t
Clean or replace the volumetric dosing device.
EVD version:
ALL LEDS OF ALL THE PUSH BUTTON
PANELS ARE FLASHING
EPU version:
THE FRONT LED IS FLASHING
t
After a few minutes, automatic water filling is stopped.
t
The device is in time-out.
t
There is no water in the mains.
t
The tap for the automatic level device is closed.
t
Some of the hoses in the circuit are clogged.
t
The probe and/or the mass are disconnected.
t
Turn the machine off and then back on.
t
Open the water supply tap.
t
Open the automatic level device tap.
t
Check and replace the defective hoses.
t
Check and restore the connections.
NON-UNIFORM MILK DISPENSING FROM
THE CAPPUCCINO MAKER
t
Out of milk.
t Milk injector obstructed.
t
Cappuccino maker obstructed.
t Suction pipe clogged.
t
Silicone tube detached.
t
Refill milk.
t Clean the milk injector.
t
Clean the cappuccino maker with the brush.
t Clean the milk suction hose.
t
Connect the hose correctly.
AIR POCKETS IN THE MILK FOAM FROM
THE CAPPUCCINO MAKER
t Air regulator too open.
t
Air aspiration tube disconnected from the cappuc-
cino maker.
t Properly calibrate the air regulator.
t
Restore the connection through the hose.
THE PUMP WORKS ONLY WITH THE
MANUAL DISPENSING BUTTON
t The pump fuse of the electronic control unit is
burned out. t Replace the pump fuse of the electronic control
unit (10A).
COFFEE DISPENSING IS NOT
CONFORMANT
THE COFFEE DOSE IS NOT MET
t
The connection of the volumetric dosing device is
faulty.
t
The connection of the electronic control unit is faulty.
t The connector of the volumetric dosing device has
humidity on it.
t The volumetric dosing device is faulty: during dispens-
ing the dosing device LED does not flash.
t The coffee is ground too finely: there is not sufficient
water flow in the dosing device.
t Water leakage from the group solenoid valve during
coffee dispensing or when in stand-by.
t The volumetric dosing device is partially obstructed.
t
Check for proper connection of the volumetric dosing
device connector.
t
Check for proper connection of the electronic control
unit connector.
t
Remove the connector of the volumetric dosing device
and thoroughly dry the contacts.
t
Replace the heads of the volumetric dosing device or
replace the dosing device.
t
Adjust the grinding suitably and check the grinders,
if necessary.
t
Clean and replace the solenoid valve, if necessary.
t Clean or replace the volumetric dosing device.
BUBBLES IN MILK FROTH
t Air regulator too open.
t
Air aspiration tube disconnected from the cappuc-
cino maker.
t
Excessive temperature in foamed milk.
t Properly calibrate the air regulator.
t
Restore the connection through the hose.
t Reduce the temperature of the foamed milk, in-
crease the speed of the milk pump.
If the problem cannot be solved, turn the machine off and contact
the Manufacturer.