Brasilia OPUS Technical Manual page 28

• Check that the shelf, on which the machine will come located, is not tilted.
• Place the machine on a shelf high enough to allow the cup warmer to be located at least at 150 cm. over the floor.
• Aerial noise: in the machine operating place the loudness level does not normally overcome 70 dB.
• Do not install the machine in places where jets of water are normally used.
• If the machine is NOT used for a long time, disconnect the cable to the mains line switch and close the water mains tap.
ADVICES OF USE:
- Always use heated cups: if this is cold, the abrupt temperature change of the espresso coffee will change its taste.
- Never load the filter holder without making an immediate delivery; the ground coffee would "burn" in the group and the espresso ob-
tained would be very bitter.
- Clean regularly the dosing grinder and check the wear of the grindstones.
- The machine's operating process forces the water over the coffee at high pressure. If contact between the water and the ground cof-
fee lasts more than 20/30 seconds, the coffee will taste unpleasant and bitter. This effect is called over-extraction.
- Ground coffee dose, for ONE espresso, between 6 and 7 g. inclusive.
- Checking the wear of the dosing grinder's grindstones.
AUTOMATIC MACHINES
DIGIT:
Espresso coffee machine with microprocessor controlled electronic measured dosage and digital programming from the push-button
pad.
Automatic boiler filling is standard.
Filter for mixed use either with ground coffee or with coffee pod upon request.
SEMI-AUTOMATIC MACHINE
P:
Semi-automatic espresso coffee machine with continuous delivery.
Automatic boiler filling upon request.
Filter for mixed use either with ground coffee or with coffee pod upon request.
• Boiler:
Is used to contain the hot water and steam and is made of copper so that its properties do not deteriorate over the years.
• Brewing group and heat exchanger:
- The brewing group is the component which, when attached to the filter holder (containing the filter and the ground coffee), brews and
delivers the beverages when supplied with hot water.
- The heat exchangers, one for each group, are immersed in the water and are used for fast heating of the fresh water from the network
to the optimal temperature and to prevent thermal imbalances within the system.
• Heat source:
This is normally provided by an electric heating element immersed in the boiler and/or by an external gas burner, which heat the water
and provide the steam.
• Electric pump:
This device is used to raise the pressure of the network, which is normally inadequate for the purpose, to a pressure of 9 bars which is
ideal for making the best coffee.
• Steam tap:
It allows steam to be delivered to give the indispensable "froth" to the milk used for preparing cappuccino, for heating water and
punches and for preparing chocolate drinks.
• Water tap:
It allows water to be delivered for preparing hot drinks, tea and tisanes.
• Control instruments:
- Manometers: show the current pressure in the boiler and the pump's operating pressure.
- Pressure switches: control the pressure and the switching on of the heat sources to keep the boiler water temperature constant.
- Level gauge: shows the water level in the boiler.
- Thermostats: allow the temperature adjusting.
- Warning lights: show the boiler filling and the switching on of the heat sources.
OPTIONAL:
• Hyperwand: Pipe in stainless steel internally separated in three parts: steam flow, air flow and
temperature control sensor.
• Milk frothing device: This device is used to "froth" the milk to prepare cappuccino
REV. 2 04/2007
2. DEFINITION
ENGLISH - 3