Necta Brio 250 Installation, Use And Maintenance Manual

Necta Brio 250 Installation, Use And Maintenance Manual Manual pdf 16 page image

© by NECTA VENDING SOLUTIONS SpA 12 0301 162-00STANDARD SETTINGSThe vending machine is supplied with the following set-tings:- tea temperature (at the spout) approx. 85÷89° C;- instant product temperature (at the spout) approx. 75° C;- operating pressure 4 bar max.ADJUSTING THE BREWINGCHAMBER VOLUMEWhen the upper piston is correctly positioned, the coffeeunit can operate with coffee doses of 5.5 to 8.5 g.To change the piston position (see Fig. 17) do as follows:- remove the snap ring from its seat;- place the piston in the appropriate adjusting notches:.less deep notches for 5.5 to 7.5 g doses;.deeper notches for 6.5 to 8.5 g doses.ADJUSTING THE GRADE OF GRINDINGWhen a variation in the grade of grinding is desired, turnthe relevant adjusting knob on the grinder (see Fig. 18)and more specifically:- turn the knob anticlockwise for coarser grinding;- turn the knob clockwise for finer grinding.For optimum results, it is advisable to vary the grade ofgrinding with the coffee grinder motor running.Fig. 171 - Snap ring2 - Upper piston3 - Reference finsFig. 181 - Coffee grinder2 - Grinding adjusting knob3 - Dose regulator4 - Dose adjusting lever5 - Reference notchesN.B.: After adjustment of the grade of grinding, at least2 test selections must be performed in order to checkthe new grade of the ground coffee:the finer the grade of grinding the longer the time neces-sary for dispensing the coffee and vice versa.ADJUSTING THE COFFEE DOSEThe dose adjusting lever can be positioned in one of the 6reference notches bearing in mind that:- the dose is increased by lifting the lever:- the dose is reduced by lowering the lever:- every notch changes the dose by approx. 0.25 g.In addition, when the lever is fully rotated upwards, theratchet can be released from the groove in the doseregulator (see Fig. 15) and replaced into a different grooveto change the average dose setting to:- low 6 g. ± 0.5- medium 7 g. ± 0.5- high 8 g. ± 0.5To take the dose just remove the coffee unit and pressbutton "2" from of the "maintenance" menu (see relevantsection).Important notice!!!To refit the coffee unit, pay special attention to thepiston position. Reference notches on the externaldisk and on the unit case should match (see Fig. 19).WATER TEMPERATURE CONTROLIf requiring to change the boiler temperature, adjust thespecial trimmer (see Fig. 22) keeping in mind that:- tightening will increase the temperature;- loosening will decrease the temperature;- the temperature varies by approx. 1° C every 2 turns.