Necta KORO Fresh Brew, Installation, Use And Maintenance Manual

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© by N&W GLOBAL VENDING SpA 0603 265 - 00
BREWER UNITBREWER UNIT
After each time the machine is switched on the brewer unit
performs a control cycle to check the correct functioning of
the piston stroke, filter closure and scraper stroke to
ensure that the device is in the correct initial position.
When making a selection, the filter holder closes to seal
the brewing chamber.
The product dose is dispensed and part of the water dose
is sent from the pump located on the boiler lid, through the
dispensing solenoid valve, to the brewing chamber.
After a (programmable) brewing time, the piston advances,
applying pressure in the chamber and closing the upper
valve of the brewer.
Then the drink is dispensed.
The piston returns and advances again, performing a wash
cycle of the product loading zone and completing the
brewing cycle; the piston remains in position for a program-
mable drying time.
At the end of the drying period, the piston returns and the
scraper motor is started, opening the chamber and expel-
ling the used grounds with the scraper.
The piston and the scraper return to the initial position.
According to the type of selection made, the flow diverting
solenoid valve will send the drink to the external nozzle or
to the dispensing spout, which has the function of limiting
the brewing pressure into the cup.
CHECKING AND ADJUSTING
THE MACHINE SETTINGS
To get the best results from the product used, the following
should be checked:
The dose weight of the instant products.
The drink temperature.
The water dose.
Should the standard settings need to be changed, proceed
as indicated in the next sections of this manual.
The weight of products, the water dose and temperature
are directly controlled by the microprocessor.
To adjust them it is therefore necessary to follow the
programming procedures.
Fig. 18
1 - Scraper motor
2 - Piston motor
3 - Piston position sensor
4 - Brewer closing valve
5 - Filter holder
6 - Scraper
Fig. 19
1 - Jug filling nozzle
2 - Brewer unit
3 - Product dispensing port
4 - Flow diverter solenoid valve
5 - Dispensing spout