La Spaziale S1 Vivaldi II Owner's Manual - 5 Alarm Handling
S1 Vivaldi II Owner’s Manual
Page 18
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
<60°C). The lights 20-21 turn on.
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.
5.3 Steam Boiler Temperature Detection System Failure
(only with the boiler turned on)
This is a blocking alarm and occurs when the temperature probe of the boiler is in short
circuit (temperature >145°C) or it is in open circuit (disconnected) condition (temperature
<60°C). The lights 19-20-21 turn on.
The alarm can be temporarily cleared by turning the boiler off (Press
BOILER
(26) button.)
Eventually you will need to turn off the VII and request service.
5.4 Damaged Group Heating Element Triac (SSR)
This alarm is a blocking one, and occurs when the group triac/SSR always remains in
conduction (temperature >140°C). The lights 20-21 are flashing.