33
Wegaconcept
Technical manual
ENGLISHOperation
COFFEE IS TOO HOT
The set temperature for the coffee water is too •
high.
The set temperature of the group is too high.•
Reduce the set co ee water temperature.•
Reduce the group temperature.•
COFFEE DISPENSED TOO QUICKLY
Co ee is ground too coarsely.•
The dose of ground co ee is too small.•
Adjust the grinding of the co ee.•
Check the amount (weight) of the ground co ee •
you are using.
COFFEE DISPENSED TOO SLOWLY
Co ee is ground too nely.•
The delivery group is clogged.•
The lter holder is dirty. •
Adjust the grinding of the co ee.•
Check and clean the delivery group.•
Clean and replace the lters, if necessary.•
WET COFFEE GROUNDS
The group solenoid valve drain is clogged.•
The delivery unit is too cold•
Co ee is ground too nely.•
There's not enough ground co ee.•
Clean the group drain.•
Modify the heating temperature of the group.•
Adjust the grinding of the co ee.•
Increase the amount of ground co ee.•
THE DISPLAY INDICATES UNACCEPTABLE
PRESSURE
The pressure transducer is faulty.•
Incorrect motor pump calibration.•
Replace the pressure transducer.•
Adjust the calibration of the motor pump.•
GROUNDS IN CUP
The lter holder is dirty.•
The lter holes are worn.•
The co ee is not ground evenly.•
The seal under the pad is worn•
The temperature of the delivery water is high.•
Clean the lter holder. •
Replace the lter.•
Replace the grinders.•
Replace the seal.•
Decrease the temperature of the groups and/or of •
water used for co ee preparation
INCORRECT COFFEE DELIVERY
THE COFFEE DOSE IS NOT MET
THE LED OF THE DOSE BUTTON FLASHES
The connection of the volumetric dosing device is •
faulty.
The connection of the electronic control unit is •
faulty.
The connector of the volumetric dosing device has •
humidity on it.
The volumetric dosing device is faulty: during deliv-•
ery the dosing device, LED does not ash.
The co ee is ground too nely: there is not su cient •
water ow in the dosing device.
The non-return valve loses pressure (the dose is •
too small).
The drain valves lose pressure (the dose is too •
small).
Water leakage from the group solenoid valve during •
co ee delivery or when in stand-by.
The volumetric dosing device is partially ob-•
struc
ted.
Check for proper connection of the volumetric dosing •
device connector.
Check for proper connection of the 8-pin connector •
of the electronic control unit.
Remove the connector of the volumetric dosing •
device and thoroughly dry the contacts.
Replace the heads of the volumetric dosing device •
or replace the dosing device.
Adjust the grinding suitably and check the grinders, •
if necessary.
Check and replace the non-return valve, if neces-•
sary.
Check and replace the drain valves, if necessary.•
Clean and replace the solenoid valve, if necessary.•
Clean or replace the volumetric dosing device.•
ALL THE LEDS OF ALL THE PUSH BUTTON
PANELS ARE FLASHING
After a few minutes, automatic water lling is
stopped:
The device is in time-out.•
No water in mains.•
The tap for the automatic level device 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 supply tap.•
Open the automatic level device tap.•
Check and replace the defective hoses.•
Check and restore the connections.•
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