Wittenborg Necta BRIO 250 User manual

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 1/ 27
AFTER-SALES SERVICE Hot & Cold
SERVICE MANUAL
“BRIO 250”
BASIC TECHNICAL MANUAL
THE CONTENTS OF THIS DOCUMENT ARE INTENDED FOR NECTA’S AFTER SALES PERSONNEL.

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 2/ 27
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
10
11
12
Layout
Electrical systems, connections and configuration
Air-break / Boilers
Pumps and by-pass
Coffee brewer unit
Stirrer dispensing unit
Cup dispenser assembly
Doser devices and powder product containers
Mixer unit
Powder and water dose tables
Trouble-shooting
Wiring diagrams
HACCP directive (Use instructions)
Daily cleaning and hygiene
Weekly cleaning and hygiene
Monthly cleaning and hygiene
Page 3/4
Page 5/6/7/8/9/10/11
Page 12/13/14
Page 15
Page 15
Page 16
Page 16
Page 17
Page 18
Page 19
Page 20/21
Page 22
Page 24
Page 25
Page 26
Page 27
NOTE
The above systems and functional units are specific to this machine.
All functional units installed but not listed in this document, are also used in other machines in the same range; therefore they will be
described in a separate manual for machines belonging to the same range, where all base functional units will be described more in detail.
BRIO 250: VIEW WITH DOOR OPEN
Instant containers
Coffee grinder and doser4 Coin
mechanism
Cup
dispenser
Mixers
Sugar and stirrer
dispenser
10 A fuses for
safety switch Liquid waste
drip tray Cup shift
unit
Brewin
g
Unit
Su
g
ar container Coffee container
Coin box

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 3/ 27
1 - HYDRAULIC LAYOUT
List of hydraulic components
1) Water inlet solenoid valve
2) Air-break
3) Filter
4) Volumetric counter
5) Pump
6) Pump by-pass
7) Brewer unit
8) Pressure boiler
9) Liquid waste tray float
Hydraulic layout
“
Espresso” version

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 4/ 27
List of hydraulic components
1) Water inlet solenoid valve
2) Boiler with air-break incorporated
3) Boiler internal float
4) Solenoid valves
5) Dry operation safety thermostat
6) Anti-boiling thermostat
7) Liquid waste tray float
NOTE: In the Espresso version a pressure boiler and pump are
used; the liquid amount drawn from the air-break is calculated
my means of a volumetric counter.
In the Instant version an open-top boiler fitted with an internal
float is used, having also the function of an air-break. The
amount of liquid is calculated by opening a solenoid valve
counting the time in tenths of a second, according to its rated
flow of the valves, set to 12 c.c. /sec.
Self-contained water supply is used in the version with a
support cabinet, according to the diagram indicated in the
Figure.
hydraulic Layout
“
INSTANT
”
version
Layout of cabinet kit
with self-contained
20-litre water supply
1) Water supply tank
2) Water softner Filter
(optional for some
markets)
3) Vibration pump
4) Filter
5) To the boiler
7) Liquid waste container

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 5/ 27
2 - ELECTRICAL SYSTEMS - CONNECTIONS - CONFIGURATIONS
The machine is designed to operate under a single-phase voltage of 230 V AC (+5-10V)
It is protected with a main 10 A fuse on both phases.
With regard to the transformer:
The primary winding is protected with a 125 mA fuse
The secondary winding is protected with a 1.25 mA fuse
The machine is fitted with a door opening safety switch.
The power cable can be supplied as standard feature and chosen among the following types:
1) HO5 RN – F copper with a 3 x 1.5 mm2section
2) HO5 V V – F ,, ,, ,, ,,
3) HO5 V V – F ,, ,, ,, ,,
Fitted with a fixed SCHUKO plug.
NOTE: For UK there is a specific plug conforming to the standards in force which is adopted for that specific
market.
In the event of replacement; cables of exactly the same characteristics must be used.
Since the “Brio” vending machine is approved by an electrical safety certification institute (IMQ), replacements
with non-original components are not permitted.
Otherwise the electrical safety certificate and the warranty will be void.
2.1 - ELECTRICAL AND BOARD CONNECTIONS:
View of actuation control board (rear side without casing)
Coffee unit
ratiomotor
VIEW OF CONNECTIONS AND
POWER SUPPLY COMPARTMENT
T
ransformers
T
erminal block
for connections
and secondary
transformer
fuses
Noise
suppressor
power supply
cable
connector
User services
connectors
Steam
suction unit
CPU/actuation board
Actuation
relays
Water (H2O)
inlet solenoid
value
See pa
g
e 7 for list of components
Connectors to
the actuations
Ratiomotors for the
powder doser units

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 6/ 27
Board connection diagram
N.B.: Some functions are available only in some versions and in some
versions the signal is inverted on J3 (see relevant wiring diagram).
Code Description
NTC Temperature control probe
CV Volumetric counter
RS 232 Printer or data reading port
IVA Water sensor (level) switch
ID Coffee dose switch
IPF Liquid waste overflow switch
J1 Connector for 15 V power supply
IVB Cup sensor switch
EX Executive coin mechanism connector
PIP Programming mode button
CCG Mechanical counter
CMSB Cup release motor cam
SAL Payment systems power supply board
TR Transformer
TZ Cup sensor (optional)
PD Diode rectifier
RCC ESPRESSO boiler heating element
RCS Instant boiler heating element
T
Z
Power supply board connection for
serial systems (EXE - BDV)
Cup sensor kit diagram (TZ)
LCD push-
button card
T
o the
printer
T
o
Programer
A
ctuation
Outputs
See note
Actuation – CPU
control board
T
o sensors:IVA –NTC- CV
–
ID - CM1-2 - PG
T
o sensors: IPF1-2 – PR
–
IVB
–
CCG - IV
A
Coin
mech.
EXE - BDV
Boiler
heating
element
Door switch
24 vol
t
power
supply input
Wiring connections -BRIO 250

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 7/ 27
Actuation and CPU control board
Note 1: Actuations for connector J7
E4 - EEA - MSCE - ZP - CMSB - PSB -
MSB - MSCB - MSV - MF2/3 - MD2/3/4
- MF1
Note 2: Actuations for connector J6
E1 - E2 - M - KSI - PM - MAC - ESC - ER
Note 3: Actuations for connector J8
RCC - RCS
Board components legend
N. Description
1 TRIAC - boiler heating element
2 Jumper - Espresso / Instant configuration
3 MINIDIP - Configuration
4 RAM
5 EPROM
6 J S 3 - EPROM size configuration Jumper
7 J S 4 - EPROM size configuration Jumper
8 TRIMMER - for boiler temperature control
9 BOARD - complete
10 .1 RED LED -- boiler heating element actuation
10. 2 GREEN LED - blinking with correct CPU function
10. 3 YELLOW LED - 12 V power supply
11 RELAY for actuations (see separate list page 8)
14
15
16
Prospective View from rear without
the casing
9
10
11
1
2
3
4
5
6
7
8

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 8/ 27
Reference to relay code and actuations - Espresso / Instant version
Espresso Configuration Instant Configuration
RELAY CODE Application RELAY CODE Application
K 01 Three-way solenoid valve for
Espresso coffee K 01 Whipper 2
K 02 Coffee release magnet
K 02 Whipper 1
K 03 Coffee grinder motor
K 03 Doser device 1
K 04 Pump
K 04 Water inlet solenoid valve
(Or pump for self-contained water
supply)
K 05 Coffee brewer motor
K 05 Solenoid valve 3
K 06 Solenoid valve 2
K 06 Solenoid valve 2
K 07 Solenoid valve 1
K 07 Solenoid valve 1
K 08 Whipper 1
K 08 Whipper 4
K 09 Doser device 4
K 09 Doser device 5
K 10 Doser device 3
K 10 Doser device 4
K 11 Doser device 2
K 11 Doser device 3
K 12 Doser device 1
K 12 Doser device 2
K 13 Cup release ratiomotor K 13 Cup release ratiomotor
K 14 Stirrer (and sugar) release
ratiomotor K 14 Stirrer (and sugar) release ratiomotor
K 15 Cup stacker shift ratiomotor K 15 Cup stacker shift ratiomotor
K 16 Water inlet solenoid valve
K 16 Solenoid valve 4
K 17 Whipper motor 2
K 17 Whipper motor 3

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 9/ 27
Machine control board configuration
Three electronic boards are installed.
1) The control board, located at the back of the machine, processes the information from the push-buttons,
the payment system and from the sensors installed throughout the machine; it also controls the actuations
and the push-button board. It is built on SMT technology.
NB: SMT = acronym for: Surface Mount Technology (some electronic components that are smaller than the
standard which can be surface mounted, takes little space, works with precision and reduced problems from
electromagnetic disturbance.
2) The push-button board, located on the inside of the door, controls the alphanumeric display and it
processes the push-button and programming button commands; it also supports the coin mechanism
connectors and the RS232 printer port.
.
The board power (15 V AC Note 2) is supplied through the transformer, which is protected with two fuses:
125 mA T on the primary winding
1.25 A T on the secondary winding
The CONTROL BOARD is also fitted with three coloured LEDs to indicate the different functions.
GREEN LED N. 10.2: it blinks during normal operation and indicates that the microprocessor functions correctly.
YELLOW LED N. 10.3: it glows when there is a 12 V DC power supply to the board
RED LED N. 10.1: it glows when the boiler heating element starts
NOTE 1
The board also controls the payment system; however, as standard feature only an Executive communication
system is controlled.
As optional feature on request the vending machine can be configured for payment systems with protocol: MDB –
BDV.
NOTE 2
The 15 V AC board power supply voltage is rectified directly by the board itself.
Wiring connection diagram for payment systems with the different protocols

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 10 / 27
Push-button board layout and connections
Machine control board configuration
The machine control board is designed as an integral part of the control system, therefore comprising the CPU
and the actuations by means of relays and triac. It was conceived to be used in different machine models.
It is configured at the factory by means of Minidips and Jumpers. In the event of replacement it will be necessary
to check that the new board configuration is suitable for the required use.
To check its configuration proceed as follows:
A series of minidips (Ref. 3) are located at the centre of the board permitting its configuration for use in the
different versions and countries. A Jumper (Ref. 2) is used to configure either Espresso or Instant.
The board also has provisions for supporting 512 Kb and 1 Mb EPROM’s by setting Jumpers JS3 and JS4.
1- Display contrast trimmer
2-RS 232 Printer port
3- Programmer connector
4- Control board connector
5- Payment system conf. Minidips
6- Jumper Jp 2
7- To control board
8- Executive serial interface
9- Front validator
10 - Jumper Jp 1
11- Coin return lamp
12- Connector not used
13- MDB coin mechanism power supply
14- MDB coin mechanism serial connection
15- Programming button

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 11 / 27
See the following tables for the available configurations
Configuration minidip Ref. 3: example of configuration
for Spanish, Espresso, stirrer dispensed always, and
standard Executive coin mechanism.
LANGUAGE CONFIGURATION
LANGUAGE
Minidip Italian French Spanish
6 OFF ON OFF
7 OFF OFF ON
MODEL CONFIGURATION
Model Espresso Instant
MINIDIP 5 OFF ON
Jumper (2) 2 - 3 1 –2
STIRRER CONFIGURATION
STIRRER
Dispensed also with
unsweetened
selections
Not dispensed with
unsweetened
selections
MINIDIP 2 ON OFF
PAYMENT SYSTEM CONFIGURATION (FRONT COIN MECHANISM)
Front ON OFF
MINIDIP 1 - Fixed to OFF
MINIDIP 3 (validator
only)
Credit control No credit control
MINIDIP 4 - Validator
MINIDIP 8 - Fixed to OFF
PAYMENT SYSTEM CONFIGURATION (SERIAL COIN MECHANISM)
IMPORTANT NOTICE
Minidips that are not mentioned must be set to OFF.
ON
OFF 1 2 3 4 5 6 7 8
o 3
o 2
o 1
SERIAL SYSTEM
MINI
DIP 3
MINI
DIP 4
MINI
DIP 5
Executive std.
U-Key URW 2
OFF OFF OFF
Executive Price Holding
Parameter 36 = 2)
OFF ON OFF
System ECS ON OFF OFF
U-Key URW 3 OFF OFF ON
Jumper 2 scheme

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 12 / 27
3 - AIR-BREAK / BOILERS
It is the same functional unit used in the Venezia and Spazio vending machines, therefore with established
characteristics and reliability.
It is a functional unit that permits various functions:
Its main function is to keep the water level constant and to signal a water flow interruption from the mains; in the
event of such water failure the current selection can be completed.
In addition, it serves the purpose of holding a reservoir of water at normal atmospheric pressure, so that the
pump can draw the correct water dose for the selection and deliver it to the Espresso boiler without changes in
pressure that may affect the volumetric counter reading.
The dose is measured by means of the volumetric counter.
The water level is ensured by a float that triggers a microswitch, keeping the level between the factory set
minimum and maximum (it is very important not to replace the microswitch with another one of different
mechanical characteristics, as a variety of malfunctions may occur).
Furthermore, in the event of failure to the maximum level microswitch, an overflow hole allows the water to be
conveyed through a tube and to the safety device fitted on the water inlet solenoid valve, thus causing its
mechanical lock (such safety device is triggered also in the event of a power failure).
The air-break also causes a signal to be sent to the machine control board necessary for the initial installation and
for filling with water. This air break operation initially needs to be done manually.
If upon switching the machine on, the float does not trigger the maximum level microswitch within a set time
(e.g. 60 sec) the vending machine locks due to a water failure.
Back view without protective casing
DETAIL OF AIR-BREAK SYSTEM INCORPORATED IN THE OPEN-TOP BOILER (INSTANT MODEL)
Float
REAR VIEW WITHOUT CASING - ESPRESSO VERSION WITH SEPARATE AIR–BREAK
A
ir-break
Float microswitch for
level indicator
Overflow drain
tube
Pressure boiler
Water
inlet tube
Actuation rod for
float microswitch
Open top
boiler

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 13 / 27
AIR-BREAK FRONT VIEW WITH DOOR OPEN
Operating conditions at first start-up:
When the machine is started, a microswitch connected to the float
indicates the absence of water to the SW, from the control board a signal
is sent to relay K16, which activates the water inlet solenoid valve.
Water is delivered to the air-break flowing through filter “F”, thus
eliminating any foreign matter present in the water (sand, calcium
particles, etc.). Upon reaching the maximum level the microswitch is
triggered indicating the situation to the SW, then the relay and the
solenoid valve are de-energised.
In the event of water not reaching the maximum level within a set time
(for example because of water interruption from the mains), the SW
disables all functions and sets the vending machine in “Water Failure”
condition.
Stand-by operating condition
With the air-break full, when a selection is made a solenoid valve is
activated (2-way or 3-way according to the type of selection) and at the
time the pump draws water from the air-break and sends it to the boiler
flowing through the volumetric counter, determining the exact amount.
When the water falls below a set level, the microswitch is activated
starting the re-filling cycle.
NOTE: The above cycle applies to the espresso version only, as in the
instant version the air-break is incorporated in the boiler and there is no
pump, since water for a selection is dispensed by 2-way gravity solenoid
valves, the dose computation is by timing according to the valve rated
flow (normally between 10 and 12 cc/sec).
Level indicator
microswitch
AIR-BREAK: VIEW FROM REAR SIDE
WITHOUT PROTECTIVE CASING
AND COFFEE CONTAINER
Wiring for signals
to microswitch and
air-break
Overflow
drain tube
Water inlet
filter “F”
Level indicator
microswitch

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 14 / 27
3.1 - BOILERS
In the Brio Espresso model there is only one pressure type boiler identical to the model used for the Venezia
vending machine and controlled by an air-break and a vibration pump. Installed power 1200 W
On the other hand in the Instant version there is a specific open-top boiler with an incorporated air-break.
Installed power 1600 W
ESPRESSO INSTANT
See relevant section in the functional unit manual for details, photos and complete description
NOTE *
In both boilers the internal temperature control is by means of a NTC * type electronic probe fitted with an internal 12 K ohm
(± 4 ohm) resistance at a temperature of 25° C.
As the internal temperature increases the resistance is reduced progressively as indicated in the following table.
Boiler temperature °C Value in ohm Allowed tolerance
0 35875 ± 7 ohm
25 12000 ± 4 ohm
50 2900 ,,
85 1475 ,,
90 1260 ,,
100 963 ,,
HYDRAULIC DIAGRAMS - ESPRESSO AND INSTANT VERSIONS
3-way solenoid
valve
Safety
thermostat
NTC
Probe
Open-top
boiler
Pressure
boiler
Pump with a b
y
-pass
Open-top
boiler
NTC Probe
T
hermostat
2-way solenoid
valves
Pressure
boiler

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 15 / 27
4 - PUMPS AND BY-PASS
Note:
The pump is used in the espresso version
only:
In order to supply water to the boiler
UNDER PRESSURE the same pump used in
the entire range of H & C vending machine
is used.
The pump has overheating protection in
case of continuous or dry operation by
means of a 90° C self-reset klixon.
In order to maintain a constant brewing
pressure, it is fitted with a by-pass which is
factory set at a pressure of 12 bars; it is
also fitted with a check valve additional to
the one fitted on the pump.
The pump is activated by relay K 14.
Klixon
p
rotection
Check valve
12 bar by-
pass

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 16 / 27
5 - ESPRESSO COFFEE BREWER UNIT
The well-known and reliable Z 2000 M unit is used
The unit is factory set to accommodate a patented first coffee KIT, based on the use of a very low power
consumption heater of the NTC type and having such characteristics as to be able to perform self-adjustments
under optimum conditions.
The kit ensures optimum temperature in the brewing chamber, without altering the taste as it happens in
currently marketed systems.
See specific section in the functional unit manual for details and further information.
Detail of brewin
g
unit at the “lower dead
centre” ready to receive ground coffee
A
SSEMBLY DIAGRAM OF UNIT FROM THE BASE
Hydraulic Tube
Fitting
Release knob
Manual
positioning
knob
Brewing
chamber
heating system
(kit)

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 17 / 27
6 - SUGAR AND STIRRER DISPENSING ASSEMBLY
7 - CUP DISPENSER ASSEMBLY
It is a new functional unit; developed from the model used in
the base Brio, such unit is provided with the functions of
containing, releasing and positioning the cups.
The main difference is the cup-loading column, to which a new
row was added, bringing the total capacity to 250 cups.
It is a functional unit developed from the unit used in
other ranges of the H & C machines, but adapted to
this specific application and with the sugar release
device incorporated, which works simultaneously.
Operation: The release ratiomotor is triggered by relay
K 24 and the sugar release spout is rotated at the
same time as the activation of the stirrer release
system.
See specific section in the functional unit manual for
details and further information.
Approximately 250 of the 95 mm stirrers can be
loaded in the guide.
CUP
RELEASE
A
SSEMBL
Y
POSITIONING
A
SSEMBL
Y
CUP SUPPORT
RELEASE KNOB
UPPER LID CLOSING SYSTEM
CENTRAL COLUMN
INSPECTION AND
LOADING HATCH
CUP LOADING
COLUMN
MANUAL
RELEASE
SWITCH
LOADING POSITION

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 18 / 27
8 - DOSER DEVICES AND POWDER PRODUCT CONTAINERS
The powder containers are made of plastic material, certified
as being food-safe and inside they are fitted with worm
screw systems (auger) to meter the powder.
According to the auger output, depending on the rotation
velocity of the motor, a time in tenths of a second must be
set in the SW to obtain the required amount (times to obtain
average doses for the specific countries are set by default).
The dose can be changed according to needs, setting
different times; however it must be taken into account that
the dose need to be in the right proportion to amount of
liquid used, therefore the time setting cannot be longer than
the one for dispensing water, otherwise there is a risk of
clogging up the mixers.
By default any time setting greater than the one for
dispensing water is “CUT”.
Specific containers holding specific products are fitted with
systems (defined as whippers), which are used to prevent clogs or compacted product.
The ratiomotors used are of the induction type (without commutator or brushes) powered with 230 V AC, with
good pick-up torque, long operating life and with overheating protection on the coil.
Ratiomotors with different speeds are provided for specific markets and products, especially conceived to obtain
the best results with any powder used. This aspect should be taken into account when replacing the motors.
POWDER DISPENSING RATIOMOTORS
REAR VIEW
Instant tea
container
Milk and
chocolate
container
T
oothed
p
inion that drives
the container auger
Slots for securin
g
and positioning
containers

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 19 / 27
9 - MIXER UNIT
Apart from their application,the mixers are the usualexcellent and reliable ones used in the entire Necta
production.
A mixer must have two main features:
1) Ease of disassembly and limited number of components to be able to meet the HACCP directive.
2) The quality of dispensed products that must have as much as possible the appearance of products served
at the bar.
The motors are special high rotation speed commutator motors (20,000 rpm) powered with 230 V AC and fitted
with interference suppressors and self-resetting overheating protections.
THE CONSTRUCTION CHARACTERISTICS OF THE MOTORS ENSURE LONG OPERATING LIFE
The motors are activated by relay K08 (Espresso version) K03 (Instant version)
WHEEL DISASSEMBLY DIAGRAM
1 – Drawer cover
2 – Powder deposit drawer
3 – Powder funnel
4 – Water funnel
5 – Feeder
6 – Mixer wheel

NECTA SPA TECHNICAL MANUAL “BRIO 250”
Service Manual: Brio 250 Edition 02-2002 20 / 27
10 - POWDER AND LIQUID DOSE TABLES
Factory “default” settings
Selection Notes Coffee
beans
Coffee
Instant
Water
c.c.
Powder
g
Sugar
g
Notes
Short coffee
Espresso
Time
Quantity
2 sec.
7 g
- - 35 sec.
60 cdv
40
- - 7.5 g
CDV =
Flow-meter
pulses
Long coffee Time
Quantity
2sec.
7 g
- -
38 sec.
95 cdv
60
- - 7.5 g
Coffee with milk Time
Quantity
2sec.
7 g
- -
38 sec.
60 + 35 cdv
40+25 c.c.
- -
2.0 g of milk 7.5 g
Cappuccino Time
Quantity
2 sec.
7 g
- -
45 sec.
60 + 72 cdv
40+55
6.0 g of milk
7.5 g
Instant coffee
(Instant version)
Time
Quantity
--
1.3 g 22 sec.
55 cdv
40 c.c.
- -
7.5 g
Instant coffee
Long
Time
Quantity
--
1.3 g 23 sec.
72 cdv
55 c.c.
- -
7.5 g
Instant coffee
with milk
Time
Quantity
--
1.3 g 27 sec.
55 +35 cdv
40 + 25 c.c. 2.0 g of milk
7.5 g
Cappuccino
Instant
Time
Quantity
--
1.3 g 31 sec.
55 + 72 cdv
40-+55 c.c. 6.0 g of milk
7.5 g
Chocolate
Strong chocolate
Time
Quantity
--
--
32 sec.
116 cdv
90 c.c.
23 g
27 g
--
Instant tea
(Optional)
Time
Quantity
--
--
32 sec.
116 cdv
90 c.c. 12.5 g
--
Milk Time
Quantity
- -
- - 32 sec.
116 cdv
90 c.c.
8 g
7.5 g
NOTE 1
The water flow in the mixers is approximately 10 c.c. per second and it is given as an indication, as there are
many variables that can affect the accuracy.
The liquid dose is determined by the counting of flow-meter pulses (cdv).
The Espresso version uses an electromechanical vibration pump for the water flow; therefore the liquid dose in
both versions is measured in flow-meter pulses (cdv).
NOTE 2
To be noted that the number of pulses does not change in a linear manner (i.e. double the amount of water does
not correspond to double the number of pulses), however the counter varies the accuracy according to the water
flow velocity, and namely:
For espresso coffee the volumetric counter is slowed considerably because of the coffee compress reaction that
slows down the water flow, triggering the by-pass, while it is accelerated in the instant drinks selections, since
there are no obstructions to the water flow. Therefore, in the event of changing the default doses set at the
factory, some measurements must be made using graduated measuring containers to check the accuracy of the
doses.
In the instant version, water is delivered to the mixers from the open-top boiler by means of gravity solenoid
valves, and the dose is calculated in tenths of a second, based on the valve rated flow (on average, set to 10-12
c.c. /sec.).