english -
39
R
espresso coffee machine - technician instructions
COFFEE IS TOO HOT
Indication
Cause
Solution
1) The boiler temperature is too high
2) The flow reducer of the group is unsuitable
1) Reduce the pressure in the boiler using the appropriate
screw on the pressure switch
2) Replace the reducer with one of a smaller diameter
COFFEE DISPENSED TOO
QUICKLY
1) Coffee is ground too coarsely
2) The diameter of the injector is too large
1) Adjust the grinding of the coffee
2) Replace the injector with one of a smaller diameter
1) Coffee is ground too fine
2) The injector is clogged
3) The delivery group is clogged
4) The filter holder is dirty
1) Adjust the grinding of the coffee
2) Replace the injector
3) Check and clean the delivery group
4) Clean and if necessary replace the filters
WET COFFEE GROUNDS
1) The group solenoid valve drain is clogged
2) The dispensing unit is too cold
3) Coffee is ground too finely
1) Clean the unit drain
2) Wait for the group to heat up completely
3) Adjust the grinding of the coffee
GROUNDS IN CUP
1) The pressure gauge is defective
2) Incorrect pressure switch calibration
3) Incorrect motor pump calibration
1) Replace the pressure gauge
2) Adjust the calibration of the pressure switch
3) Adjust the calibration of the motor pump
THE PRESSURE GAUGE
INDICATES AN UNACCEPTABLE
PRESSURE
1) The filter holder is dirty
2) The filter holes are worn
3) The coffee is not ground evenly
4) The undercup seal is worn
5) The pressure in the pump is too high
1) Clean the filter holder
2) Replace the filter
3) Replace the grinders
4) Change the seal
5) Adjust the pressure of the pump
for SAE-SME :
COFFEE DELIVERY OCCURS
ONLY USING THE MANUAL
BUTTON
1) The control unit fuse is burned out
2) The coil of the solenoid valve doesn't work
correctly or is in short circuit
1) Check for proper connection of the volumetric dosing device
connector
2) Check for proper connection of the 8/10-pin connector of
the electronic control unit
3) Remove the connector of the volumetric dosing device and
thoroughly dry the contacts
4) Replace the heads of the volumetric dosing device or
replace the dosing device
5) Adjust the grinding suitably and if necessary check the
grinders
6) Check and if necessary replace the non-return
valve
7) Check and if necessary replace the expansion valves
8) Clean and if necessary replace the solenoid
valve
9) Clean or replace the volumetric dosing device
for SAE-SME:
INCORRECT COFFEE DELIVERY
THE COFFEE DOSE IS NOT
MET
THE LED OF THE DOSE
BUTTON FLASHES
1) The connection of the volumetric dosing device is
defective
2) The connection of the electronic control unit is
defective
3) The connector of the volumetric dosing device
has humidity on it
4) The volumetric dosing device is defective: during delivery
the dosing device LED does not flash
5) The coffee is ground too fine: there is not sufficient water
flow in the dosing device
6) The non-return valve loses pressure
(the dose is too small)
7) The drain valves lose pressure (the dose is too small)
8) Water leakage from the group solenoid valve during
coffee delivery or when at rest
9) The volumetric dosing device is partially obstructed
for SAE-SME:
ALL THE LED's OF ALL THE
PUSH BUTTON PANELS
ARE FLASHING
for AEP-SMSA AEAP-SMAT:
THE FRONT LED IS
FLASHING
After a few minutes, automatic filling with water is stopped:
1) Time control device has cut in
2) No water in mains
3) The tap for the automatic level device is closed
4) Some of the tubes in the circuit are clogged
5) The probe and/or the earth are disconnected
1) Turn the machine off and then back on
2) Open the water mains tap
3) Open the automatic level device tap
4) Check and replace the defective tubes
5) Check and restore connections
1) Replace the control unit fuse (1A)
2) Replace the coil of the solenoid valve
COFFEE DISPENSED TOO
SLOWLY
