Azkoyen BRAVO Automatic 2G Manual

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Technical Information: BRAVO 1
BRAVO

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Technical Information: BRAVO 2
I N D E X
1. INTRODUCTION
1.1. DEFINITIONS
1.2. PRINCIPLE TECHNICAL CHARACTERISTICS
1.3. TECHNICAL INNOVATIONS
2. DESCRIPTION OF COMPONENTS
3 INSTALLATION AND SWITCHING ON
3.1. UNPACKING
3.2. INSTALLATION AND SWITCHING ON
4. WORKING CONDITIONS AND NORMS
5. CLEANING AND MAINTENANCE
6. DIMENSIONS

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Technical Information: BRAVO 3
1. INTRODUCTION
This Technical Manual provides the technical information that corresponds to the range of
machines called BRAVO that are destined for the elaboration of espresso coffee.
These machines are designed to elaborate, with the best results, espresso coffee infusions,
steam and hot water for other types of infusions. Its natural market is catering facilities and
large installations.
The BRAVO range is made up of the following ranges and models:
BRAVO BRAVO COMPACT
Range Automatic Electronic Continuous Automatic Electronic Continuous
Model 2G 3G 2G 3G 2G 2G 1G 2G 1G 2G
In the rest of this manual the machines in the BRAVO range will be called:
machine or machines, Afor automatic; Efor electronic and Cfor continuous
1.1. DEFINITIONS
Thermo compensation: a process by which an element is maintained at a constant
temperature regardless of the external thermal conditions.
Espresso coffee: an infusion of coffee elaborated according to the following conditions:
y7 grams of ground coffee.
yWater temperature of the infusion between 92º C and 96º C.
yWater pressure of the infusion at 8 kg/cm².
yInfusion time of the coffee between 20 and 28 seconds.
yThe volume of water used in the infusion will be 40 ml.
Water volume dosage: this system of dosage measures the volume of water that is used in
the infusion process.
Water pump: an electro mechanical system used to force the infusion water through the
ground coffee at the correct pressure.
Groups: this is the name given to the part the machines have to hold the filter holders that
contain the ground coffee. The espresso coffee infusion process is carried out inside the Group.

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Infusion: this is the process of forcing hot water through the ground coffee to extract the oils,
aromas and essences.
-Volumetric infusion: when a constant, measured volume of water is used in the
infusion process.
-Continuous infusion: when the volume of water that is used in the infusion
process is controlled by the person elaborating the beverage.
Coffee cake: this is the name given to the coffee residue left inside the group after the
infusion process.
Programming mode: when the machine is ready to have any of the programming functions
programmed.
Working mode: when the machine is ready to elaborate any of the services it has to offer.
1.2. PRINCIPLE TECHNICAL CHARACTERISTICS
Programmable volumetric dosage of the water used in the different services of the
espresso coffee.
All the groups have a button for the elaboration of an espresso coffee using the
“continuous infusion” method.
Two steam nozzles for the extraction of steam in the BRAVO range and one in the
BRAVO COMPACT range.
All the machines can optionally have installed the Cappuccino kit for the elaboration of
hot milk and steamed milk services.
Accounting of the number of services in the machines in the A range (shown on the
display).
Thermo compensated coffee infusion groups.
The boiler is filled automatically. The water level is controlled by a sensor.
The machines have a manual tap that is used to fill the boiler on installation and if
there is a problem with the sensor for the automatic filling.
There is an automatic switching on and off programme in the machine.
A water pump incorporated inside the machine to force the water through the ground
coffee in the infusion process.
The steam boiler has an anti vacuum valve.

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The heating element that heats the water in the boiler is made up of three individual
elements that can be switched on and off independently.
The installer of the machine can easily configure the machine for single phase, two
phase or three phase electrical connection.
Electrical data:
BRAVO
MODELS Automatic
2G
Electronic
2G
Continuous
2G
Automatic
3G
Electronic
3G
Notes
Power supply 230 Vac
Boiler heating elements 3 x 1500 3 x 2000 w
Water pump motor 120 200 w
Pressure stat Yes
Electronic digital display Yes No 4 digits
ON/OFF lamp No Yes No Yes
Programming buttons Yes No Yes No
ON/OFF button Yes No Yes No
Boiler full lamp Yes
Infusion electro valves 230 Vac
Maximum power draw 4620 6200 w

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BRAVO COMPACT
MODELS Automatic
1G
Electronic
1G
Continuous
1G
Automatic
2G
Electronic
2G
Continuous
2G
Notes
Power supply 230 Vac
Boiler heating elements 3 x 800 3 x 1200 w
Water pump motor 120 w
Pressure stat Yes
Electronic digital display Yes No Yes No 4 digits
ON/OFF lamp No Yes No Yes
Programming buttons Yes No Yes No
ON/OFF button Yes No Yes No
Boiler full lamp Yes
Infusion electro valves 230 Vac
Maximum power draw 2520 3720 w
Hydraulic data:
BRAVO
MODELS Automatic
2G
Electronic
2G
Continuous
2G
Automatic
3G
Electronic
3G
Notes
Boiler capacity 12 18 Litres
Anti vacuum valve Yes
Manual boiler refill tap Yes
Espresso boiler valves 12 Kg/cm²
Infusions with cold water
mix regulation
Yes No Yes No With EV
Water level lamp Yes
Water pump pressure
gauge
Yes No Yes No
Boiler pressure gauge Yes No
Auto filling of boiler Yes
Thermo-compensation Yes
Programmable volume for
infusion water
Yes No Yes
BRAVO COMPACT

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MODELS Automatic
1G
Electronic
1G
Continuous
1G
Automatic
2G
Electronic
2G
Continuous
2G
Notes
Boiler capacity 5 9 Litres
Anti vacuum valve Yes
Manual boiler refill tap Yes
Espresso boiler valves 12 Kg/cm²
Infusions with cold water
mix regulation
No
Water level lamp Yes
Water pump pressure
gauge
Yes
Boiler pressure gauge Yes No Yes No
Auto filling of boiler Yes No
Thermo-compensation Yes
Programmable volume for
infusion water
Yes
Boiler capacity No

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2. DESCRIPTION OF COMPONENTS
1 Cup warming tray 9 Pressure gauges
2 Main switch 10 Feet
3 Display 11 ON/OFF lamp
4 Programming buttons 12 Filter holders
5 Service buttons 13 Cappuccino kit
6 Hot water spout for infusions 14 Steam nozzle tap
7 Steam nozzle 15 Identification plaque
8 Drip tray
Automatic

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Electronic
Compact continuous

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1. Cup warming tray
The cups that are used to elaborate the espresso coffee are placed on this tray. The heat from
the boiler rises to heat the cups; they are heated to a temperature of approximately 50º C.
The objective of heating the cups is to avoid large thermal losses when serving the espresso
coffee infusion.
The cups should not be stacked any higher than three cups as the they will not
be heated adequately if stacked higher
2. Main switch
It has the function of connecting and disconnecting the machine from the mains power supply.
The installer should note the wiring instructions to adapt the machine to the type of power
supply used in the place where the machine is installed.
3. Display
The display is a 7-segment, 4-digit display. It has the task of showing the different messages
directed at the user or technician of the machine.
4. Programming buttons
These are used to carry out the programming on the machine. The different buttons that are
found on the keyboard, the names and the use of each button are explained below:
On/Off button.While connected to the mains, this button is used to switch the
machine on and off at times that are different to those programmed in the
machine. Switching the machine on or off with this button will not cancel the
automatic switch on and switch off timetable programmed on the machine.

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Accounting button. It is used to show on the display how many of the different
coffee services have been elaborated.
Clock button. It is used to programme the time.
Programming switch ON/OFF timetable button. This button is used to
programme the automatic switch on/off timetable of the machine.
Advance button.It is used to move through the different programming functions
the machine has.
5. Service buttons
Each infusion Group has its own keyboard made up of:

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Function of the button Symbol of the button
The button for the infusions made with water. It is used
to open the hot water tap, for a programmable time, to
make teas, herbal infusions and instant beverages.
The buttons for the espresso coffees. These are used to
activate the programmed processes for making the
coffee infusions.
STOP button.
It has two functions:
yWhen elaborating an espresso coffee, pressing the
button will stop the process before it finishes.
yPressing this button will start the espresso coffee
elaboration process in continuous infusion mode.
Therefore the infusion process will not stop until the
button is pressed once again.
Programming button
The last infusion Group of the machine, as well as the buttons described in the above table, has
one more button marked PROG , whose job it is to facilitate the programming tasks on the
machine.
6. Hot water outlet knob
It is used to open the tap that supplies hot water used to elaborate the infusions, the user has
to turn the knob anticlockwise.
7. Steam nozzle knob
It is used to open the steam tap; the user has to turn the knob anticlockwise.
When the steam tap is first opened, a few drops water come out and then the steam. The drops
of water are a result of the condensation that accumulates inside the nozzle; therefore it is
recommended to wait a few seconds before submerging the nozzle into the liquid to be heated.

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ALWAYS, on finishing with the steam service, clean the nozzle with a clean
damp cloth to avoid the build up of deposits
When switching off the machine, NEVER leave the steam nozzle submerged in
the milk or other liquids in the jug, as the vacuum produced on cooling could
draw the liquid into the boiler
Suggestion
To froth the milk, submerge the nozzle to the bottom of the milk jug and when
the milk is just about to boil, move the jug up and down to make some froth
and then hold it so the tip of the nozzle is in the froth at the surface of the hot
milk
The thread of the steam nozzle is a 3/8” male. To remove it, use a 22 mm spanner.
8. Drip tray
Place the coffee cups on this tray while elaborating an espresso coffee. It is designed to be
removed and fit into a dishwasher. It also directs all the drips and spills to the drain.
9. Pressure gauges
One of the gauges measures the water pressure that the water pump supplies and the mains
water pressure when not in use, the other measures the pressure inside the boiler.

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10. Adjustable feet
The machine has four feet. All of them are height
adjustable and allow a maximum adjustment of 50
mm. The adjustment can be made by hand and also
with a 13 mm spanner.
11. Tap for manually refilling the boiler
If the machine is functioning correctly, the refilling of the water in the boiler is done
automatically. If the water level sensor is not working, the boiler can be manually filled using
this tap. It can also be used to manually fill the boiler on installation of the machine.
12. Filter holder
Inside this element are housed the filters that hold the ground coffee. After finishing the
infusion of an espresso coffee, it is advised to leave them in the infusion group so they are
always at the correct temperature.
The filters that can be inserted into the filter holders are:
Capacities
Filter for one coffee 6 grams 9 grams
Filter for two coffees 12 grams 17 grams
Blind filter For cleaning and servicing purposes

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13. Pressure stat
This connects and disconnects the heating elements. It connects at ≈0.9 kg/cm² and
disconnects at ≈1.1 kg/cm².
The boiler working pressure can be
regulated up or down by using a
screwdriver to turn the regulating screw.
Pressure gauge Temperature in the boiler
0.8 kg/cm² 117.3º C
0.9 kg/cm² 119.0º C
1 kg/cm² 120.6º C
1.1 kg/cm² 122.1º C
1.2 kg/cm² 123.6º C
1.3 kg/cm² 125.1º C
1.4 kg/cm² 126.5º C
1.5 kg/cm² 127.8º C
14. Heating elements
These elements heat the water inside the boiler. They are made up of 3 individual elements
that have a straight design to improve their performance and useful life.
Technical characteristics:
BRAVO BRAVO COMPACT
3 X 800 w 1 Group 3 x 1,500 w 2 Groups
3 x 1.200 w 2 Groups 3 x 2,000 w 3 Groups
15. Water pump
It supplies a pressure of 9 kg/cm² to the water used in the infusion of espresso coffees.

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Technical characteristics:
BRAVO BRAVO COMPACT
Power (w) 120
1 Group
Flow (l/h) --- 65
Power (w) 120 120
2 Groups
Flow (l/h) 65 65
Power (w) 200
3 Groups
Flow (l/h) 180
The working pressure of the water
pump can be regulated, up or down,
by using a screwdriver to turn the
regulating screw.
To know what the working pressure of
the water pump is, it is necessary to
use the “filter holder pressure kit”.
16. Water level probe
This probe supplies information to the circuit board related to the level of water inside the
boiler. The water pump starts automatically when it is necessary to fill the boiler to the correct
level.
Regulating screw

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The technician can manually move the probe up and down approximately 2 cm to achieve:
►more hot water and less steam (lifting the probe).
►more steam and less hot water (lowering the probe).
17. Volume meter
This device counts the volume of water that is
used in the infusion of the espresso coffees.
Technical characteristics:
Maximum working pressure 20 kg / cm²
One impulse equals 0.555 cm³
Thread ¼”
Manufacturer Digmesa

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18. Air flow regulator
The air flow regulator is located in the accessory that can be installed in the machines to
“froth” the milk in the process of making cappuccino coffees. The more the flow of air, the
bigger the bubbles in the milk are.
19. Anti return valve
The entry of water to the boiler is through this valve. It allows the water to enter the boiler but
will not let it return from the interior of the boiler toward the main water supply.
20. Anti vacuum valve
When the boiler is disconnected from the mains and loses pressure, this valve opens to
achieve a balance between the atmospheric pressure and the pressure inside the boiler. This
will avoid the machine,if the steam nozzle is inserted in any liquid, from drawing in any liquid
to the interior of the boiler
21. Safety pressure valve
It is regulated to 12 kg/cm² and will open when the pressure inside any of the heat exchange
boilers goes over this pressure. The release drain from the valve is connected to the drain.
22. Control board
Each of the three models in the range: A, E and Continuous has a different type of Control
board. The three Control boards have a transformer that provides power to the electronics and
to the water level sensor using a 7805 stabiliser and a Zenner diode of 5.6 V; it also has other
electronic components that activate the different devices on the machine (electro valves, water
pump, water meter, etc).
23. Infusion groups
The infusion groups are the elements that the filter holders are inserted into. The infusion
process of the espresso coffee is carried out inside these elements.
All the machines in the BRAVO range are designed with thermo compensation technology
incorporated in the infusion groups. This technology guaranties that all the espresso coffees
that the machine elaborates have the same water temperature regardless of the number of
coffees elaborated over a certain period.

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24. Boiler and heat interchange boilers
The water in the main boiler is used to provide steam and hot water for the elaboration of teas
other infusions and beverages. Inside the main boiler there are as many heat interchange
boilers as there are infusion groups on the machine. The water in the heat interchange boilers
is used to elaborate the espresso coffees. As these heat interchange boilers are inside the main
boiler, the water that is inside them is heated by the water in the main boiler.
25. 3-way valve
It is used to open the flow of hot water from the heat interchange boiler to the infusion group
to make the infusion with the ground coffee. On finishing the espresso coffee service, this
valve opens the third exit so that the pressure from the water pump that has accumulated
inside the group is released to the drain.
The blind filter should be used to make four or five coffee services with each
of the infusion groups at least once a week to maintain the third exit clean
and free of coffee deposits. This will ensure the correct drying of the coffee
cake inside the filter holder
PCB