COFFEtek VITRO X3, Техническое руководство

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COFFE tek LTD
VITRO X3 Issue 1 23/02/17 10
WATER SYSTEM
16. The main water supply enters the machine via a double inlet valve, which is mounted in the
cabinet base panel. A length of tube then takes the water supply into the top of the water
boiler via an air break into a channel, which is directed, to the bottom of the heater tank for
the instant products.
The Espresso system water enters through the same double inlet valve mounted in the
base of the cabinet. The water then enters an internal water tank where it sits before being
pumped via an ULKA pump into the espresso boiler.
17. Instant hot water is dispensed from the boiler, via the appropriate solenoid operated valve,
to the mixing bowl. A length of tube directs any overflow from the boiler via overtemp safety
thermostats to the waste tray.
Espresso hot water is dispensed from the boiler, via the appropriate solenoid operated
valve, to the brewer group. A length of tube attached to the purge valve on the top of the
coffee valve directs any overflow into the water tray. The boiler is protected via overtemp
safety thermostats to the waste tray.
18. The cold water mains supply enters the machine at the back of the cabinet and connects
with a double solenoid operated inlet valve, which controls the flow of water to both the
instant and espresso boilers. The water is maintained at a constant level in response to
signals from a water level probe which is connected to the Controller Board for the instant
and a volumetric counter for the Espresso system.
19. The water is heated to the required temperature by a single heating element in the instant
boiler and a single element in the espresso boiler. The Controller Board ensures that the
temperature is maintained to a predetermined level by controlling the supply to the heater in
response to signals from the N.T.C. temperature sensor which forms part of the
level/temperature probe assembly in the Instant boiler and temperature sensor in the
Espresso boiler.
20. Hot water from the boiler is fed directly to the mixing bowls where it mixes with the
dispensed ingredient to produce the selected beverage. Solenoid operated valves
distribute the hot water to the selected mixing bowl, the amount of water being determined
by the program setting.
21. The temperature of the water is monitored by the Controller Board via a sensor inserted into
the tank, thus causing the supply to the heater to be removed when the water in the boiler
reaches its required temperature setting. If the temperature in the boiler increases causing
the water to boil over, the water will flow down the overflow pipe over the overtemp sensors
which will cut off the electrical supply to the heating elements. These sensors are mounted
on the cabinet rear and are re-settable.
Heater and Boosting
22. The instant heating control system employs an intelligent algorithm to obtain maximum
performance as follows:-
Boost operation takes place when the inlet valve opens following a selection being taken. The
heater control algorithm is instructed to turn on the
SSR’s for the duration specified in the
variable CUP BOOST referred to Section 2 paragraph 24.
If the temperature is 50 more than the DESIRED TEMPERATURE, set in the CHANGE
SETTING MENU (see Section 2 paragraph 24) all boosting operations are disabled.
If the actual temperature is between 0
– 35 less than the DESIRED TEMPERATURE one SSR