INST
ALLA
TION
GUIDE
Z.I. 4e RUE - BP. 425
06515 CARROS CEDEX 1 - FRANCE
Tel: (33) 04 92 08 62 60
Fax: (33) 04 93 29 24 23
www.unic.fr
SE9131 05/2019
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Switching on the heating
All the elements start heating automatically if filling is correct. When the machine reaches its operating temperature it is ready to work.
The steam pressure and the group temperatures are displayed on the screen.
We recommend leaving the machine with the heating switched on all the time, and leaving the filter holders in position on the machine when they are
not in use.
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CHECKS & ADJUSTMENTS
Normally all adjustments are made before the machine leaves the factory. Check that these adjustments
are correct and change them if necessary; proceed as follows to access them:
You need to remove the right side panel of the machine:
Loosen the 3 mm BTR screw at the bottom of the machine (1) between the two straight feet.
Use suction cup (2) to remove the side by tipping it up (3).
Warning to holder the heavy side (4)
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Adjusting the temperature
The temperatures of each group and the steam boiler are adjusted independently from the control screen
via the “adjustments” menu (see technical note for more precision).
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Adjusting the expansion valve
The valve is located at the top, on the right rear of the machine. It is necessary to remove the right side. The
valve must open at about 13 bar (1.3MPa).
- If it opens ABOVE 13 bar:
UNSCREW
- If it opens BELOW 13 bar:
SCREW IN
Use a lug wrench (ref: OU003). After adjustment, do not forget to lock the lock-nut.
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Adjusting the pump pressure
In infusion, the pressure must be 9 to 10 bar (0.9MPa et 1MPa)
The pump is located on the right side of the machine and is adjusted by this same side.
SCREW IN
to INCREASE the pressure,
UNSCREW
to DECREASE the pressure,
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Adjusting the water entry solenoid valve
The solenoid valve is located at the top, on the back-right of the machine. It is necessary to remove the cup
heater.
Machine at temperature, launch a cycle (with coffee) continuously on each unit simultaneously.
Make the boiler fill up (draw hot water). Adjust the maximum flow rate of the solenoid valve so as not to
descend below 7 bar (0.7MPa).
Then check that the filling time of the boiler is not excessive.
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Adjusting the coffee grinding
Wait until the machine has reached the set temperature 0.9 to 1 bar (0.09MPa à 0.1MPa).
It is the finesse of the grinding which determines the time for passing the hot water through the dose. This
time is usually monitored by using the two-cup filter with two doses of coffee.
Average passing time for 2 cups (6 to 7 cl. per cup): 30 to 35 seconds.
- If this time is shorter, reduce the grinding.
- If this time is too long, increase the grinding.
To obtain a good result, use at least 6 g. of (good) ground coffee per cup.
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Adjustment of mixer tap for the hot water
The mixer tap is located at the top, on the front-right of the machine. For access, it is necessary to remove
the right side.
The temperature range is 55°C to 95°C (131°F à 203°F). To adjust the desired temperature, use a flat
screwdriver. We adjust the cold circuit electrovalve , open at his maximum the high circuit electrovalve.
Make the settings during the hot water cycle.
SCREW IN
to INCREASE the temperature,
UNSCREW
to DECREASE the temperature.
Thank you for choosing UNIC, the first French manufacturer of professional espresso
machines since 1919.
The manufacturer reserves the right to modify the
appliances presented in this publication without notice.
Read carefully the safety instructions before use.
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