50 PERLA HP - ISSUE 02
FAS International S.p.A. - Via Lago di Vico, 60 - 36015 SCHIO (VI) Italy - tel. +39 0445 502011 – fax +39 0445 502010 - e-mail: info@fas.it
11 CALIBRATION AND ADJUSTMENTS
This section is for qualified assistance staff only
11.1 ADJUSTING THE INSTANT BEVERAGES
The solenoid valve opening times and the quantity variations (in grams) of the instant products, can be
adjusted by setting the desired parameters during the programming phase in the: "RECIPE DOSE
SETTING" item (command 51).
11.2 ADJUSTING THE ESPRESSO COFFEE
The quantity of water can be adjusted by setting the desired parameter during the programming phase at
THE "RECIPE DOSE SETTING" item (command 51). Whereas to change the quantity of ground coffee and
the degree of grinding, see the paragraph on "ESPRESSO COFFEE CALIBRATION".
11.3 ESPRESSO COFFEE CALIBRATION
ADJUSTMENT OF GRINDING:
Grinding degree can be adjusted by means of the plastic nut placed between grinding unit and coffee
canister (pos.G).
Adjusting must be made when grinding unit is working.
• For a finer ground rotate knob “G” so that ring nut “M” rotates clockwise.
After completing the adjustment phase, always carry out 3 or 4 vending cycles to allow the coffee bean-size
distribution to stabilise.
GROUND COFFEE DOSE:
The amount of ground coffee dosed out for an espresso coffee can be set between4,5 (±0.2) and 8,0 (±0.2)
grams according to the position of the volumetric canister (det.J). To check the weight of the dose, remove
the espresso unit, and execute Service 07 followed by Service 08 (see Command 52). Remove and replace
the espresso unit as described in paragraph SPECIAL MAINTENANCE, CLEANING OF COFFEE UNIT
FILTERS.
GROUND COFFEE COMPRESSION ADJUSTMENT:
The pressing element support has 4 positions (A B C D) for varying the compression of the dose according
to the set quantity of grams. Remove the seal ring (det.K), slightly pull out the pressing element (det.L) and
rotate it to the desired position.
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