La Spaziale S1 Vivaldi II Owner's Manual - 5 Alarm Handling
S1 Vivaldi II Owner’s Manual
Page 15
group water solenoid opens and when the pump is activation. This is the preinfusion
time. If none of the lamps 14-21 are lit, the preinfusion time is 0 seconds which means
no preinfusion. Each press of the
BOILER
button (13) increases preinfusion time by 1
second and lights one more lamp up to a maximum of 8 seconds when all of the
temperature and
ECON
lamps (14-21) are lit. When preinfusion is set to 8 seconds,
another press of the
BOILER
button (13) resets the preinfusion back to 0 seconds.
Once the preinfusion time is set as desired, press the
ON/OFF
button (27) to exit the
programmable preinfusion mode.
This feature should be coupled with an external pressure regulator plus a pressure
gauge. Chris Coffee recommends an initial setting of 20-25PSI (~1.5bar) of input water
pressure and 2-3 seconds of preinfusion time. Other articles on programmable
preinfusion suggest a higher input pressure of around 45psi (3 bar). Feel free to
experiment with both settings to optimize your espresso experience.
5 Alarm Handling
The VII uses computerized sensors to robustly handle VII device malfunctions. There
are two types of alarms the VII can generate:
Blocking Alarms
– these are the most serious. The VII will turn itself Off and display
the alarm codes noted below when one of these alarms occurs.
Non-Blocking Alarms
– These are informational only and, while they do represent an
error condition, the machine will continue to function.
5.1
Coffee Group Water Dosing System Failure
This is a non-blocking alarm. When the flow meter isn't working properly or when the
coffee grind is too fine, this is indicated by the turning on of the lights 14-15-16; if you
are making one coffee dose, and the lights 17-18-19 if you are making two coffee
doses.
This alarm is actually useful when back flushing as an indication of when to turn off the
pump and allow the 3-way valve to operate.
5.2 Coffee Group Temperature Detection System Failure
This alarm is a blocking one, and occurs when the temperature probe of the group is in
short circuit (temperature >145°C) or is in open circuit (disconnected) condition
(temperature
If the group water temperature does not exceed 60°C within 5 minutes of turning the
unit on, this alarm will also occur.
Turn off the VII and request service.