Portofino America
rev. 5 - 08/2004
12
FAULTS AND ROUTINE REPAIRS
I d e n t i f y i n g p r o b l e m s :
- Always ensure that there is enough ground coffee for at least one dose in the grinder-doser’s reservoir.
- In the coffee drops too slowly then grinding is probably too fine. Vice-versa, if it drops too fast, the grinding is too coarse.
- Remember that the machine’s operating process forces the water over the coffee at high pressure. If contact between the water and the
ground coffee lasts more than 20/30 seconds, the coffee will taste unpleasant and bitter. This effect is called over-extraction.
- Always heat the cup by rinsing it in hot water. If the cup is cold, the abrupt temperature change of the espresso coffee will change its taste.
- Never load the filter holder without making an immediate delivery; the ground coffee would “burn” in the group and the espresso obtained would
be very bitter.
The following maintenance operations must be carried out by specialized personnel authorized by the manufacturer.
Do not perform makeshift or ad-hoc repairs, and never use non-original spare parts.
Attention: ALWAYS UNPLUG THE ELECTRICITY when carrying out maintenance checks or operations.
Problem: The group does not deliver water and the pump is noisy
- Cause 1:
the water mains tap or the softener taps are shut.
Cures:
open the taps
- Cause 2:
the water entry union filter is obstructed.
Cures:
dismantle and clean
Problem: The group does not deliver water
- Cause 1:
the jet is obstructed
Cures:
remove the jet plug, check and clean or replace as necessary
- Cause 2:
the injector is obstructed
Cures:
dismantle and clean, replace if necessary
N.B. check the regeneration of the softener resins
- Cause 3
(only for versions with electronic dosing): the infra-red ray entry doser union is obstructed.
Cures:
dismantle and clean
- Cause 4:
the solenoid valve will not open
Cures:
- the coil is not getting power; check and correct
- the coil is broken; replace
- the core is blocked; preferably replace the complete solenoid valve
Problem: The boiler is under pressure but the group does not heat up
- Cause 1:
air bleeding of the boiler did not occur during the water heating stage.
Cures:
When cold check that the air vacuum valve is not blocked shut. Replace if necessary.
- Cause 2:
the water heating circuit is partially obstructed (except lever machine)
Cures:
check the group’s inlet and outlet pipes and unions. Clean and replace if necessary.
N.B. check the regeneration of the softener resins
Problem: The boiler will not heat up
- Cause 1:
the heating element is broken
Cures:
replace
- Cause 2:
the heating element is not receiving power
Cures :
- the safety thermostat is faulty; check and replace if necessary
- the pressure switch is faulty; check and replace if necessary
- the main switch is faulty; check and replace if necessary.
Problem: The water level control provides water when it should not and the level gauge light is on
- Cause 1:
the level sensor/control centre electrical connection is broken
Cures:
repair
- Cause 2:
the frame earthing/control centre electrical connection is broken
Cures:
repair
- Cause 3:
the level sensor is dirty
Cures:
clean; when dismantling do not unthread it from the insulator but remove it complete with the union.
- Cause 4:
the electronic control centre is defective
Cures:
replace
Problem: The water level control does not provide water when it should and the level gauge light is off
- Cause 1:
the sensor is touching the glass or earthed metal parts
Cures:
check and reposition
