N&W Global Vending Colibri UL 120V Use And Installation Manual
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16© by N&W GLOBAL VENDING SpA 02-2007 266 00ADJUSTING THE BREWINGCHAMBER VOLUMEThe brewing chamber volume must be adjusted accordingto the layout settings. To change the piston position (seefig. 20) do as follows:- Take the snap ring out of its seat.ADJUSTING THE GRADE OF GRINDINGWhen a variation in the grade of grinding is desired, turnthe relevant adjusting knob on the grinder (see fig. 21) andmore 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.N.B.: After adjustment of the grade of grinding, at least2 test selections must be performed in order to checkthe new grade of grinding for ground coffee: the finerthe grade of grinding the longer the time necessary fordispensing the coffee and vice versa.- According to the dose and to the type of release, placethe piston as indicated in the table:ADJUSTING THE COFFEE DOSEWarning !!!The coffee dose must be adjusted only in machinesset for single release.In machines set for double release it is necessary toset the coffee dose to 6 g.The dose adjusting lever can be positioned in one ofthe 6 reference 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 gr.In addition, when the lever is fully rotated upwards, theratchet can be released from the groove in the doseregulator (see fig. 21) and replaced into a different grooveto change the average dose setting to:- high 8 gr. ± 0,5- medium 7 gr. ± 0,5- low 6 gr. ± 0,5To take the dose just remove the coffee unit and use thespecial functions in the “maintenance” (see relevant sec-tion).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. 17).Fig. 201 - Snap ring2 - Upper piston3 - Adjustment groovesFig. 211 - Coffee grinder2 - Grinder knob3 - Dose regulator4 - Dose adjusting lever5 - Reference notchesStandardbrewer unitØ 37mmLargebrewer unitØ 45mm1 dose release5.5gr to 7.5gr less deep grooves not possible1 dose release6.5gr to 8.5gr deeper grooves less deep grooves2 dose release6gr max. (12gr) not possible deeper grooves |
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