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Before starting the machine, check the condition and perfect efficiency of the safety devices.
Before starting to use the machine, it is necessary to become familiar with the machine controls, particularly with the push
buttons and the emergency procedures, following the instructions of this manual.
Do not subject the machine to any uses in excess of its intended uses.
CHARGING THE BOILER
Checking position of water system valves
a) Remove the grounds collecting plate and the relative grill 1 and check:
- Boiler drainage valve 4 closed
- Automatic level valve 2 open
- Automatic level valve 3 open
- Displacement meters valves 6 open
b) Reposition the grounds collecting plate and its grill.
c) Open the main water supply valve 15.
d) Open a steam valve 29 to allow the air to leave the boiler during the boiler filling phase.
Only for PRACTICAL and SPRINT models
e) Turn the main switch 30 to position 1 to allow the automatic filling of the boiler with the heating elements switched off.
When the water reaches the probe, the "MAX" led lights up.
f) When the water boiler is filled up, turn the main switch from position 1 to working position 2.
Other models
g) Check that the main switch 30 is in "zero" position.
h) Keep the lever 28 pressed until the water reaches 3/4 of the visual level gauge 31.
Adjusting the water level
This adjustment is carried out in the factory. If required, the adjustment is carried out by positioning the probe as shown in the
following figures:
Version with probe
on boiler lid
+
CALIBRATION OF PUMP PRESSURE
a) Once the boiler is filled, turn the main switch to position 2 (the heating elements start to heat the water).
b) Press the continuous-feeding push button 32 for the manual serving machines or the push button 33 for the electronic
machines with automatic serving, so that the water flows out of the unit corresponding to the pressed button.
c) Read the water pressure value on the lower part of the pressure gauge 44. The optimum pressure is 9 bar.
The pressure is adjusted to the desired value by operating on the pump screw 22: the pressure is increased by turning
clockwise; it is decreased by turning counterclockwise. As shown in the following figure, there are three different cases for
adjusting this screw, depending on the pump installed on the machine:
- adjust only the screw
- adjust the screw and lock it with the lock nut
- unscrew the cap nut and adjust the screw.
CALIBRATION OF WATER PRESSURE IN THE BOILER
a) After having filled the boiler to the proper level, turn the main switch to
position 2 (the heating elements will start to heat the water).
b) Open the lever-controlled steam valve 29 to vent the air during the heating
phase. Close the valve as soon as the steam phase is reached. The steam
pressure in the boiler can be read on the upper scale of the pressure gauge
44 from 0 to 3 bar. The pressure rises to the calibration value of the pressure switch 45 in the range from 0.9 to 1.1 bar. To
vary the steam pressure, turn the screw 46 on the pressure switch 45. The pressure is decreased by turning the screw
clockwise and it is increased by turning the screw counterclockwise. The screw is adjusted by means of a screwdriver
inserted into the hole on the lid of the pressure switch. The pressure switch can be reached from the upper tray and grill.
Note: for the Mod. 95-26 and 95-36 machines, the boiler temperature is adjusted electronically and it is shown on the display
48. To calibrate the temperature and pressure, see the paragraph "Programming".
40
F O R T H E I N S T A L L E R
–
–
+
Version with probe on
upper part of boiler
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