Astoria Plus4YouTS - Page 62

62
Technical manual
MALFUNCTION CAUSE SOLUTION
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 A PRESSURE
WHICH IS INCONSISTENT
• 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 delivery
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 obstructed.
• 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 necessary.
• Check and replace the drain valves, if necessary.
• Clean and replace the solenoid valve, if necessary.
• Clean or replace the volumetric dosing device.
ALL LEDS OF ALL THE PUSH BUTTON
PANELS ARE FLASHING
After a few minutes, automatic lling with water 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.
SHUTDOWN OF THE ELECTRONIC SYSTEM
• The control unit fuse F4 is burned out.
• One of the volumetric dosing device's contacts is
grounded
• Replace fuse F4
• Check the connection of the volumetric dosing device
THE PUMP LEAKS WATER
• Poor mechanical grip of the shaft or O-Ring seal.
• The inlet and outlet connections are loose.
• The hex nut of the pressure relief valve or lter is loose.
• The seal or O-Ring of the pressure relief valve or lter
is faulty.
• Check the status of the pump and take any corrective
action which may be required.
• Tighten the connections.
• Tighten the hex connection of the pressure relief
valve and lter.
• Replace the seal and O-Ring, taking care not to change
the calibration of the valve.