PORTOFINO RESTYLING
rev.4 - 03/2008
Cures:
check and replace if necessary
Problem: The water level control does not provide water when it should and the level gauge light is on
- Cause 1:
the loading solenoid valve coil is broken
Cures:
check and replace if necessary
- Cause 2:
the loading solenoid valve core is blocked
Cures:
check and replace if necessary
Problem: The water level in the boiler continues to rise until it escapes from the safety valve
- Cause 1:
level sensor not connected
Cures:
verify and replace if necessary
- Cause 2:
there is a foreign body inside the water level control solenoid valve
Cures:
check and replace if necessary
- Cause 3:
there is a foreign body in the seal housing
Cures:
check
- Cause 4:
the seal is worn
Cures:
check and replace if necessary
Problem: The graduated optical gauge does not show the actual water level in the boiler
- Cause 1:
the gauge’s lower connection pipe with the boiler is obstructed
Cures:
dismantle and clean
Problem: The boiler gets up to pressure but the group will not deliver
- Cause 1:
the control centre fuses are shot (dosed version)
Cures:
check and replace if necessary
- Cause 2:
the delivery switch is defective (continuous delivery version)
Cures:
check and replace if necessary
- Cause 3:
the solenoid valve will not open
Cures:
check and replace if necessary
Problem: The machine will only deliver when the heating element is electrically powered (red indicator light on)
- Cause 1:
“neutral” is missing from the electrical power supply
Cures:
check and reset
Problem: Irregular doses are delivered (dosed version only)
- Cause 1:
there is a leakage in the infra-red doser
Cures:
replace the doser if there is humidity on its outside and on the diode holder flange
- Cause 2:
the doser’s rotor does not turn freely
Cures:
replace the doser
- Cause 3:
the doser’s photo-diodes do not send signals to the electronic control centre
Cures:
check the operation of the photo-diodes with the impulse counter and replace if necessary
- Cause 4:
the delivery solenoid valve loses from the discharge
Cures:
check and replace if necessary
- Cause 5:
the expansion valves lose during delivery (except lever machine, which is not fitted with expansion valves)
Cures:
check the calibration and eventually the seal
N.B.:
Do not fully unscrew the expansion valve regulation union with the boiler under pressure.
- Cause 6:
the infusor operates irregularly
Cures:
check and replace if necessary
Problem: Insufficient use of the coffee
- Cause 1:
pump pressure incorrect
Cures:
regulate the pressure checking the manometer during delivery. Exact calibration value: 9 bars.
- Cause 2:
expansion valves calibration incorrect: they lose during delivery (except lever machine)
Cures:
regulate the calibration
- Cause 3:
the delivery temperature is incorrect
Cures:
check the temperature with the thermometer during delivery at the filter holder spout outlets. Intervene if necessary using the
pressure switch.
- Cause 4:
the delivery solenoid valve loses from the discharge
Cures:
check and replace if necessary
- Cause 5:
the grain size of the ground coffee is incorrect (grain too fine or too coarse)
Cures:
check the delivery time and regulate the grinding if necessary
- Cause 6:
shower and filters partially obstructed
Cures:
check and clean; replace if necessary
Problem: Leakages occur from the water and steam pipes with the relative taps shut
- Cause 1:
sealing gasket defective or presence of a foreign body in the seal housing.
Cures: check and replace if necessary