NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250
Edition 02-2002
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List of hydraulic components
1) Water inlet solenoid valve
2) Boiler with air-break incorporated
3) Boiler internal float
4) Solenoid valves
5) Dry operation safety thermostat
6) Anti-boiling thermostat
7) Liquid waste tray float
NOTE:
In the
Espresso
version a pressure boiler and pump are
used; the liquid amount drawn from the air-break is calculated
my means of a volumetric counter.
In the
Instant
version an open-top boiler fitted with an internal
float is used, having also the function of an air-break. The
amount of liquid is calculated by opening a solenoid valve
counting the time in tenths of a second, according to its rated
flow of the valves, set to 12 c.c. /sec.
Self-contained water supply is used in the version with a
support cabinet, according to the diagram indicated in the
Figure.
hydraulic Layout
“INSTANT”
version
Layout
of cabinet kit
with self-contained
20-litre water supply
1) Water supply tank
2) Water softner Filter
(optional for some
markets)
3) Vibration pump
4) Filter
5) To the boiler
7) Liquid waste container
