modbar av Series User manual

manual
modbar av - espresso system
Modbar AV is an elegant espresso machine which hides the complexity
of the traditional machine under the counter.
It exists for the barista, the visionary and the dreamer who wants to
redene the aesthetics of the coffee space, while still requiring the
quality, consistency and reliability of a proven industry leader.

modbar av - espresso system
Operating Manual V1.0 - 03/2018
MAN.21.1
EN
certications available:
La Marzocco S.r.l.
Via La Torre 14/H
Località La Torre
50038 Scarperia e San Piero
(Firenze) - ITALIA
www.lamarzocco.com
[email protected]
T: [phone]
F: [phone]
Chapters
1. General Warnings and Safety Specications
2. Denition of Available Models
3. Installation
4. Machine Operation and Coffee Preparation
5. Maintenance and Periodic Cleaning Operations
6. De-commissioning and Demolition
7. Mandatory Maintenance and Check-up Operations
8. Precision Scale
9. Software Programming Guide
page 3
page 7
page 11
page 19
page 23
page 26
page 27
page 28
page 30

EN
3
1) Important safeguards
• The weighted sound
pressure level of the
machine is lower than
70dBA.
• Use, cleaning and
maintenance of this coffee
machine are realized
by people (including
children more than 8
years of age) with reduced
physical, sensory or mental
capabilities, or lack of
experience and knowledge,
as long as they have
been given supervision or
instructions concerning
the use of the appliance
by a person responsible
for their safety and if they
understand dangers.
• Children should be
supervised to ensure that
they do not play with the
appliance.
• Keep the appliance and
its cord out of the reach of
children less than 8 years
of age.
2) This operating manual
is an integral and essential
part of the product and
1. General Warnings and Safety Specications
WARNING
This machine is for professional
use only and should be installed
in locations where its use and
maintenance is restriced to
trained personnel. Children are
forbidden to operate or play with
the machine.
WARNING
This machine is not suitable for
outdoor use. Jets of water should
not be used to clean the machine,
nor should it be placed where
water jets are used.
WARNING
As already mentioned in
the preceding notes, the
manufacturer shall not be held
responsible for damage to
objects, animals and/or people
whenever the machine has not
been installed according to the
instructions contained in this
manual, and is not used to do
what it was designed for (i.e.
preparing coffee and hot drinks).
WARNING
The Espresso Tap must be placed
in a horizontal position on a
counter higher than 80 cm from
the ground.

EN
4
must be supplied to users.
Users are asked to read
the enclosed warnings and
cautions carefully, as they
provide valuable information
concerning safety during
installation, operation and
maintenance. This manual
must be kept in a safe
place and be available for
consultation to new and
experienced users alike.
3) Ensure product’s integrity
by inspecting the packaging,
making sure it presents no
signs of damage which might
have affected the enclosed
machine.
4) Check the machine’s
integrity after having carefully
removed the packaging.
Note: In case of doubt, do not go
on any further and contact your
dealer or retailer immediately. They
will send out specialized personnel
authorized to perform service on
the espresso machine.
5) Packaging (boxes, plastic
bags, foam parts and whatever
else) must not be left around
within easy reach of children,
due to the potential danger it
represents, nor be discarded
in the environment.
6) Check to see that data on
the rating plate corresponds
to those of the main electrical
supply which the machine will
be hooked up to.
7) The equipment must be
installed to comply with the
applicable federal, state or
local electrical and plumbing
codes. The installation
also must comply to the
manufacturer’s instructions,
and must be performed by
qualied and authorized
personnel.
8) Incorrect installation may
cause for injury/damages to
people, animals or objects, for
which the manufacturer shall
not be held responsible.
9) Safe electrical operation of
this device will be achieved
only when the connection to
the power outlet has been
completed correctly and
in observance of all local,
national, and international
electrical codes and safety
regulations, and particularly
by grounding the unit.
Make sure grounding has
been done properly as it
represents a fundamental
safety requirement. Ensure
qualied personnel check

EN
5
such connection.
10) Furthermore, you must
ensure that the capacity of
the available electrical system
is suitable for the maximum
power consumption indicated
on the espresso machine.
11) We do not recommend
using adapters, multiple
plugs and/or extension cords.
If you cannot avoid using
them, make sure that they are
exclusively of the kind which
conforms to local, national,
and international electrical
codes and safety regulations,
being careful not to exceed
the power and current ratings
indicated on such adapters
and extension cords.
12) This device must be used
exclusively for the functions it
has been designed and built
for. Any other application is
inappropriate and dangerous.
The manufacturer shall not be held
responsible for any damages caused
by improper and/or irrational use.
This machine should not be
installed in kitchens.
13) Using any electrical
device requires that certain
fundamental rules be
observed. In particular:
• do not touch the device
with wet or humid hands
and feet;
• do not use the device while
having no shoes on your
feet;
• do not use extension cords
in bath or shower rooms;
• do not unplug the device
from the power outlet by
pulling on the power supply
cable;
• do not expose the device to
atmospheric agents (rain,
sun, etc.);
• do not allow children or
untrained people to use
this device;
• do not clean the control
panel with a wet cloth since
it is not watertight.
14) Before carrying out any
maintenance and/or cleaning
operations, turn the main
switch, which is located on
the front left of the machine,
to the “0” or “OFF” position,
and disconnect the machine
from the electrical network
by unplugging the cord or
by switching off the relative
circuit breaker. For any
cleaning operation, follow
exclusively the instructions
contained in this manual.

EN
6
15) In case the machine is
operating in a faulty manner
or breaks down, disconnect
it from the electrical network
(as described in the preceding
point) and close the water
supply valve. Do not attempt
to repair it. Contact a qualied
and authorized professional to
perform any repair. Any repairs
must be performed exclusively
by the manufacturer or by
an authorized centre using
only original parts. Non
compliance with the above
could compromise the safe
operation of the machine.
16) You should plan to
make use of an omnipolar
connector during installation,
as required by local, national,
and international electrical
codes and regulations.
17) In order to avoid dangerous
overheating problems, it is
recommended that the power
supply cable be fully unfurled.
18) Do not obstruct air intake
and exhaust grilles and, in
particular, do not cover the
cup warmer tray with cloths or
other items.
19) The machine’s power
supply cable must not be
replaced by users. In case the
power supply cable becomes
damaged, shut off the
machine and disconnect the
machine from the electctrical
network by switching off the
relative circuit breaker and
close off the water supply;
to replace the power supply
cord, contact qualied
professionals exclusively.
A [mm]
B [mm]
C [mm]
WEIGHTModule [kg]
20) Dimensions and weights common to all
machines
A
C
B
D
EF
356
18
203
406
D [mm]
E [mm]
F [mm]
316
137
115
WEIGHTTap [kg] 10,5

EN
7
2. Denition of Available Models
This operating manual refers exclusively to the following models, of our own manufacture:
MODBAR AV, Espresso System
4Digital Display
5USB Key Connection
6Power Switch
7Selector
8Pressure Gauge
9Keypad
10 Drain
11 Water Inlet
12 Electrical Connection Pump
13 Power Inlet
14 Tap 1 Brewing
15 Tap 2 Brewing
16 Tap 1 Low Voltage
17 Tap 2 Low Voltage
18 Tap 1 High Voltage
19 Tap 2 High Voltage
20 Serial AUX Low Voltage
21 Scales Low Voltage
22 Precision Scale
Legend
Fig. 1 - ESPRESSO System
1
2 3
6
5
4
7
8
9
10
15
12
13
Espresso Tap
Espresso Module
14
11
16
17
20
18
19
21
22
ABR
For additional information on electronics,
keypads, and software programming,
please see the section entitled Software
Programming your Espresso Machine.
1Espresso Actuator Lever
2Selection Indicator
3Timer

EN
8
This operating manual refers exclusively to the following models, of our own manufacture:
MODBAR AV 1 group, Espresso System
1Espresso Tap 1
2Tap 1 Brewing
3Tap 1 Low Voltage
4Tap 1 High Voltage
5Preheater
6Tap 1 Coffee Boiler
Legend
Fig. 1a - ESPRESSO System 1 group
1
Espresso Tap
2
4For additional information on electronics,
keypads, and software programming,
please see the section entitled Software
Programming your Espresso Machine.
Espresso Module
3
5
6
Barista Side
Barista Side

EN
9
This operating manual refers exclusively to the following models, of our own manufacture:
MODBAR AV 2 groups, Espresso System
1Espresso Tap 1
2Espresso Tap 2
3Tap 1 Brewing
4Tap 2 Brewing
5Tap 1 Low Voltage
6Tap 2 Low Voltage
7Tap 1 High Voltage
8Tap 2 High Voltage
9Tap 2 Coffee Boiler
10 Tap 1 Coffee Boiler
Legend
Fig. 1b - ESPRESSO System 2 groups
2
Espresso Taps
3
For additional information on electronics,
keypads, and software programming,
please see the section entitled Software
Programming your Espresso Machine.
Espresso Module
5
9
10
Barista Side
Barista Side
1
4
7
6
8

EN
10
1) General Description
The machine is built in 1 and 2 coffee
group versions and is essentially composed
of the following parts:
• Inlet and outlet boilers if one group
machine or boiler 1 / boilers 2 if two
groups machine;
• Brewing tap(s);
• Water pump.
2) Description of the various parts
• Coffee Boilers
The Coffee Boiler consists of a cylindrical
tank made of AISI 300 series stainless
steel. Each unit is subjected to a hydraulic
test, at a pressure of 18 bar, and has an
operating pressure of 9 bar. The following,
is the effective volumes:
2 coffee boilers 1.4 liters each
Covers are welded at either end of the
cylindrical tank and on one of them there
is a housing for the water heating elements.
The temperature of the coffee boiler is
maintained by an electronic temperature
controller (PID capable) with an accuracy
of 0.2°C.
It consists of AISI 300 stainless steel
tubes. Heating is accomplished through an
immersion-type plated heating element.
• Operating temperature 95°C
(adjustable), controlled automatically
by an electronic temperature controller
with an accuracy of 0.2 °C. Operating
pressure of 9 bar.
• Pressure is displayed through a pressure
gauge with a scale from 0 to 18 bar.
• Safety device, based on an expansion
type mechanical valve, with
ounteracting spring adjusted to 13 bar.
• Testing: Hydraulic test at 18 bar
performed on ready-to-use small boilers,
at our factory.
• Brewing groups
They consist of a precision casting made
of stainless steel. The brewing group
accepts the portalter used to hold the
ground coffee; the espresso ows through
the brewing group, through the portalter
basket, through the portalter spout, and
into the cup(s) after the brewing button
has been pressed.
• Exterior cover
The exterior consists of painted and
stainless sheet steel panels. To provide
good aesthetics, to optimize ergonometrics
for the operator and to reduce the chance
of damage to a minimum.
• Water pump
The rotary vane pump, is installed on the
water supply tubing and is set up to operate
anytime the coffee groups are activated,
and through an autoll system whenever
the water boiler needs to be replenished.
•Machine ETL plate:
•Machine CE plate:
MODEL: MFG. DATE:
MAX. PRESSURE: 217,5 PSICAPACITY: 2.8L
208 Vac / 13,1A / 2,733W / 60hz. / 1-Phase
220-240 Vac / 14,2A / 3,264W / 60hz. / 1-Phase
READ OPERATING
MANUAL BEFORE USING
THIS EQUIPMENT
WATERSUPPLY:
1-GAL. / MINUTE
MIN 35 PSI - MAX 70 PSI
CONFORMS TO UL STD 197
CERTIFIED TO CSA STD C22.2 NO.109
EspressoAV System 11/21/2017
SERIAL #:
PR000000
MODEL: MFG. DATE:
MAX. PRESSURE: 1.5 MPaCAPACITY: 2.8L
220-240 V / 50/60Hz
READ OPERATING
MANUAL BEFORE USING
THIS EQUIPMENT
WATERSUPPLY:
3.8 l/min
MIN 0.24 MPa - MAX 0.48 MPa
EspressoAV System 01/15/2018
SERIAL #:
PR000000
11.6A / 2676W (1TAP) 14A / 3227W (2TAP)
MADE IN
ITALY
CONFORMS TO UL STD 197
CERTIFIED TO CSA STD C22.2 NO.109
MODEL: MFG. DATE:
MAX. PRESSURE: 217,5 PSICAPACITY: 2.8L
208 Vac / 13,1A / 2,733W / 60hz. / 1-Phase
220-240 Vac / 14,2A / 3,264W / 60hz. / 1-Phase
READ OPERATING
MANUAL BEFORE USING
THIS EQUIPMENT
WATERSUPPLY:
1-GAL. / MINUTE
MIN 35 PSI - MAX 70 PSI
CONFORMS TO UL STD 197
CERTIFIED TO CSA STD C22.2 NO.109
EspressoAV System 11/21/2017
SERIAL #:
PR000000
MODEL: MFG. DATE:
MAX. PRESSURE: 1.5 MPaCAPACITY: 2.8L
220-240 V / 50/60Hz
READ OPERATING
MANUAL BEFORE USING
THIS EQUIPMENT
WATERSUPPLY:
3.8 l/min
MIN 0.24 MPa - MAX 0.48 MPa
EspressoAV System 01/15/2018
SERIAL #:
PR000000
11.6A / 2676W (1TAP) 14A / 3227W (2TAP)
MADE IN
ITALY
CONFORMS TO UL STD 197
CERTIFIED TO CSA STD C22.2 NO.109

EN
11
3. Installation
THE DETAILS ON THE LEFT DESCRIBE
HOW TO CONNECT EACH WIRE TO THE PLUG.
RESPECT ALSO THE LOCAL SAFETY
REGULATIONS.
MODEL/SERIES BOILER
GROUP V/Hz
RATED
POWER
(W)
RATED
INPUT
(A)
MODULE
WATTAGE
TAP
WATTAGE
TOTAL
WATTAGE
POWER CORD
SIZE (mm²)
MODBAR AV
2 BOILER
1GR
A
C220-240V/50-60Hz
AC208/60Hz
2682,5 11,7 2131,5 551 2682,5
SEE ELECTRICAL
2252,5 1801 451,5 2252,5 CONNECTIONS
FOR DETAILS
WARNING
10,8
POWER CORD:
1 X BLUE (NEUTRAL)
1 X BROWN (PHASE)
1 X YELLOW & GREEN (GROUND)
3 X WIRES
220V
THE DETAILS ON THE LEFT DESCRIBE
HOW TO CONNECT EACH WIRE TO THE PLUG.
RESPECT ALSO THE LOCAL SAFETY
REGULATIONS.
MODEL/SERIES BOILER
GROUP V/Hz
RATED
POWER
(W)
RATED
INPUT
(A)
MODULE
WATTAGE
TAP
WATTAGE
TOTAL
WATTAGE
POWER CORD
SIZE (mm²)
MODBAR AV
2 BOILER
2GR
A
C220-240V/50-60Hz
AC208/60Hz
3233,5 11 2131,5 1102 3233,5
SEE ELECTRICAL
2703 1801 902 2703 CONNECTIONS
FOR DETAILS
WARNING
13
POWER CORD:
1 X BLUE (NEUTRAL)
1 X BROWN (PHASE)
1 X YELLOW & GREEN (GROUND)
3 X WIRES
220V
WARNING
In order to prevent cracks
or leakage: do not store or
install the Coffee machine
in places where in boiler or
hydraulicsystem to freeze.
WARNING
For the connection of the
machine, it must be provided a
suitable disconnection device
near the installation, so that
in case of trip, it is possible to
operate the device near the
machine.

EN
12
Fig. 2 - Installation guide
Recommended Clearances
200 mm - 8 in.
Clearance right side
75 mm - 3 in.
Clearance rear
WARNING
Installation on the counter:
For cutting the counter refer to
cutting template placed inside
the package.
WARNING
Installation on the counter with
scales:
The thickness of the counter must
be between 20mm and 100mm.
WARNING
This machine should not be
installed in kitchens.
WARNING
Replace fuses with the same size,
type and rating F1 = 2A, 250V
150 mm - 6 in.
Clearance above
75 mm - 3 in.
Clearance left side
350 mm - 14 in.
Minimum clearance between
Espresso Taps

EN
13
WARNING
At each installation, the machine
should be equipped with a new
set of tubes for plumbing and
related gaskets.
WARNING
Water pressure supply must be
between 2 and 4 bar if sufcient
pressure is not available we
suggest that an additional water
supply system is used.
WARNING
Before making any electrical
connections make sure that the
two strain relief connectors are
rmly secured to the body of
the machine in order to prevent
inadvertent stress on the power
cables.
WARNING
Hazardous voltage disconnect
from power supply before
servicing.
WARNING
The motor pump must be
situated close to the machine
in an accessible place for
maintenance but not for
accidental interference and
where there is an optimal air
circulation.
WARNING
The manufacturer declines
any responsibility for any
event leading to liability suits
whenever grounding has not
been completed according to
current local, national, and
international regulations and
electrical codes, or other
electrical parts have been
connected improperly.
WARNING
Disconnect from power supply
before the connection with the
water pump.
WARNING
The machine is intended to be
permanently connected to xed
wiring, and it is mandatory that
a residual current device (RCD)
with a rated residual operating
current not exceeding 30mA is
installed.
WARNING
The Coffee Boiler contain water
at elevated temperature. Water
temperature over 125°F / 52°C
can cause severe burns instantly
or death from scalding (Coffee
Boiler 207°F/97°C)

EN
14
Note:
• The drinking water mains valve and
the circuit breakers for the electrical
system need to be located in the most
convenient position for the operator to
access them easily and quickly.
• The machine should be placed on a at
counter and must be placed in settings
with the following temperatures:
Minimum room temperature: 5°C/41°F;
Maximum room temperature:
32°C/89°F.
• If the machine has been temporarily
housed in settings with a room
temperature of less 0°C/32°F, the
machine must be placed in a warmer
environment in order to gradually
defrost the hydraulic system prior to
use.
• Water pressure supply must be between
2 and 4 bar.
1) Power Switch Function
The two-position power switch on the
Modbar module front panel has two
separate functions: ON and OFF.
0 - Off: In this position, the
module is in the off position.
I - Standby Mode: In this position, the module
is in standby mode. When in standby
mode, all operations function as normal,
but no power is applied to the heating
elements. This mode is used for priming
the system upon installation, and can also
be useful for some diagnostic applications.
II - Operating Mode: In this position, the
module is in operating mode. Power is
applied to the heating elements, and all
functions operate as normal.
WARNING
- U.S.A. and CANDA only - Do not
connect to a circuit operating
at more than 150V to ground on
each leg.
WARNING
This machine is not suitable for
outdoor use. Jets of water should
not be used to clean the machine,
nor should it be placed where
water jets are used.
WARNING
This appliance is not intended
for use by persons (including
children) with reduced physical,
sensory or mental capabilities,
or with lack of experience and
knowledge, unless they have
been given supervision or
instruction concerning the use
of the appliance by a person
responsible for their safety.

EN
15
2) Installation guide
Upon installation, the Modbar module must
be primed before use. This is accomplished
by the following steps.
• Ensure that ltered water is supplied to
the module.
• Ensure that the power switch is in the off
position.
• Ensure that the module power cable is
plugged into its appropriate power source.
• Turn the power switch counter-clockwise
to place it in standby mode.
• Actuate the tap handle in manual mode, as
described in the “Dispensing Operations”
section of this guide.
• After water begins to pour from the tap
(This may take some time on a new
system) allow water to ow for at least
30 seconds to ensure that the system is
primed.
• At this point, it is safe to turn the switch
clockwise into operating mode.
WATER TREATMENT
RECOMMENDED VALUES
www.lamarzocco.com/water_calculator
ROTARY PUMP
POWER SUPPLY
CORD
WASTE/DRAIN
MAIN SWITCH
AND ELECTRICAL SUPPLY CONNECTION
COFFEE
BOILER
BRAIDED HOSE
MAIN WATER
SUPPLY VALVE
TAP1
BREWING
TAP2
BREWING
TAP1
LOW VOLTAGE
TAP2
LOW VOLTAGE
TAP2
HIGH VOLTAGE
TAP1
HIGH VOLTAGE
Fig. 3 - Installation guide
3) General Use
During general use, the module is already
primed, and it is not necessary to prime the
system. To start the module, follow these
steps:
• Ensure that ltered water is supplied to
the module.
• From the off position, turn the power
switch clockwise to place it into operating
mode.
• At this point, the elements will begin to
heat. When each heat zone reaches set
temperature, the module is ready for use.

EN
16
2) Accessories
Check the package to make sure that the
following accessories are included:
• a number of 1-dose and 2-dose
portalters corresponding to the number
of groups;
• replacement 1-dose and 2-dose lters
(one of each);
• 1 tamper;
• 1 blind lter;
• cleaning detergent, for the groups;
• 3 stainless steel braided hoses for water
connections;
• 1,5 mt of reinforced plastic tubing for
drainage;
• 1 hose clamp.
In order to proceed with installation, it is
necessary that the following are available:
• Pipes carrying drinking water with a
3/8”G (BSP) end connection; (3/8”
Compression for USA and Canada)
• Electrical Supply according to the
specication of the espresso machine
purchased:
• Single/Three phase 220VAC - 50/60
Hz electrical connection with ground,
protected socket and approved interlock
switch
• Single phase 200VAC - 50/60 Hz
electrical connection with ground,
protected socket and approved interlock
switch
• Three-phase, 380VAC - 50 Hz electrical
connection with neutral + ground, near
the bench on which the machine is
installed and terminating in a suitable
protected vepole socket equipped with
an approved interlock switch
• Waste water drain system.
3) Water test kit
In order to enable you to check if your water
supply is within the suggested ranges, La
Marzocco machines will be equipped with
two units of a quick water test kit (see image
below) including 6 test-strips and instruction
cards.
The parameters that you can measure are
Total Hardness, Total Iron, Free Chlorine,
Total Chlorine, pH & Total Alkalinity,
Chlorides.
Ideally, you should perform a test on the
water BEFORE the water treatment system
and again AFTER the water system in order
to verify if this is actually matching our
suggested ranges.
Once the test has been performed, learn
which treatment system is most appropriate
for your particular water supply by lling out
the online water calculator on our website: LA
MARZOCCO WATER CALCULATOR (http://
www.lamarzocco.com/water_calculator/).
4) Water supply connection
In order to connect the machine up to
the water mains proceed according to the
indications given in the chapter about
Installation and in compliance with any
local/national safety standards of the
location in which the machine is being
installed.
The equipment is to be installed with
adequate backow protection to comply
with applicable federal, state, and local
codes.
To guarantee a correct and safe functioning
of the machine and to maintain an
adequate performance level and a high
quality of the beverages being brewed it
is important that the incoming water be
of a hardness greater than 7°f (70ppm,
4°d) and less than 10°f (100ppm, 6°d),

EN
17
pH should be between 6.5 and 8.5 and
the quantity of chlorides be less than
50mg/l . Respecting these values allows
the machine to operate at maximum
efciency. If these parameters are not
present, a specic ltration device should
be installed, while always adhering to the
local national standards in place regarding
potable water.
Then connect the inlet of the water lter/
softener (if present) to the drinking water
supply using one of the supplied stainless
steel braided hoses. Before connecting
the lter to the water pump, ush the
water supply line and the ltration system
in order to eliminate any residual particles
which could otherwise get stuck in taps or
valves thus preventing them from working
properly. Connect the water supply
connection of the espresso machine to
the water pump outlet using one of the
supplied stainless steel braided hoses.
Then connect the water pump inlet to the
water lter/softener outlet (if present).
Note: The water pump is a differential
pressure volumetric pump and has been
designed to be used exclusively with cold
water. Make sure that water is always
present while the pump is operating,
otherwise air can be introduced into the
brew boiler causing an undesireable
condition and the pump can be damaged.
5) Electrical connections
a) Power supply cord
• This is the main power supply cable
that provides power to the entire espresso
machine. There are different types of cable
based upon the electrical requirements of
the espresso machine purchased:
• 200/220VAC 1 Phase 3-core cable
with 4/6/10mm2 cross section or AWG
12/10/8 for 2,3 4 group versions, secured
to espresso machine via a strain relief
connector
• 220VAC 3 Phase 4-core cable with 4
mm2 cross section for 2 , 3 and 4 group
versions, secured to espresso machine via
a strain relief connector
• 380 VAC 3 Phase 5-core cable with
2.5mm2 cross section for 2, 3 and 4 group
versions, secured to espresso machine via
a strain relief connector.
b) Water pump motor power cord
This is the power supply for the water pump
motor. The internal electronics will switch
the pump motor on when needed.
• 3-core cable with 1.5 mm2 cross section
or 3-core AWG 16 (for UL version) secured
to espresso machine via a strain relief
connector.
c) Quick connection between the water pump and
the espresso coffee machine
The electrical connection must be made
through the use of the connectors, as
shown in the following gures:
- View of the connectors;
- Cable connection;
- Cable tightening;
Machine connector Pump connector

EN
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6) Waste water drain connection
The espresso machine drain is to be
connected by means of the included
reinforced plastic tubing. Connect one
end of the reinforced plastic tubing to the
drain hose connection on the left side of
the espresso machine, secure with included
hose clamp. Connect the other end to a
suitable waste water collection system.
In case such a system is not available,
drained liquids may be collected in a
suitable bucket and any necessary drain pipe
extensions shall be made using steel-lined
PVC tubing and suitable hose clamps.
Water specications table
Min. Max.
T.D.S. ppm 90 150
Total Hardness ppm 70 100
Total Iron (Fe+2/Fe+3) ppm 0 0,02
Free Chlorine (Cl2) ppm 0 0,05
Total Chlorine (Cl2) ppm 0 0,1
pH value 6,5 8,5
Alkalinity ppm 40 80
Chloride (Cl–) ppm not more 50
N.B.: Test water quality (the warranty is void if water parameters are not within the range
specied in the section “installation”)

EN
19
4. Machine Operation and Coffee Preparation
1) Starting the espresso machine
a) Filling the boilers with water
Once the installaon procedures have
been completed, it is necessary to ll the
boiler tanks with water. Complete the
following procedure to properly ll the
boiler tanks:
• Coffee boiler
The water ows inside the coffee boiler
directly, as soon as the water system and
purier taps (if present) are opened.
Since the inow of water will compress
the air in the boiler, it will be necessary to
remove or “bleed” the air from the coffee
boilers. All air must be removed in order
to completely “saturate” the coffee boiler/
group assemblies.
To remove the air from the boiler, or “bleed
the groups”, it will be necessary to activate
the tap lever until water ows from the
group with the module in stand by mode
(main switch in position I, selector in
position I):
Repeat this procedure on all tap(s).
The installation is now complete and the
espresso machine should be heating to
operating temperatures.
2) Waiting for the Espresso Machine to Heat to
Operating Temperature
During this time, it may happen that
the pointer of the coffee boiler pressure
reaches as high as 14-15 bar. This may
happen anytime that the heating element
is in the “on” condition. In this case, it
is necessary to adjust the expansion valve
(see the picture below about the three
coffee boiler expasion valves) in such a
way that the pressure never exceeds 13
bar.
CAUTION
Never remove the lter holder
when water is being delivered.
This operation can be extremely
dangerous since the high
pressure built-up inside the blind
lter would spray out hot and
slightly caustic water, which may
cause severe burns. The Coffee
Boiler contains water at elevated
temperature. Water temperature
over 125°F / 52°C can cause
severe burns instantly or death
from scalding.
IMPORTANT
To improve the avor of the espresso, the
temperature of the water in the coffee boiler
and therefore of the groups may eventually
be raised or lowered via the digital display
(please consult the Software Programming
Manual for detailed instructions).
WARNING
The machine must not be dipped
in, nor splashed with, water in
order to clean it. For cleaning
operations, please follow the
instructions listed below very
carefully.
WARNING
This machine is designed only for
preparing coffee and hot drinks.

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20
In normal operating conditions, the coffee
boiler pressure transducer, while brewing,
can read anywhere from 0-12 bar when
brewing.
3) Brewing after rst installation
Once the rst installation procedures are
nished, before proceeding with brewing
coffee, please follow these steps:
• Engage the portalters by inserting
them into each group, brew water
through each group for at least two
minutes.
- At least 1 liter for a 1/2 group machine
4) Installing the portalters
Install the portalter(s) by inserting them
into the group and rotate the handle from
left to right. When the portalters are
inserted properly, you can press any of
brew buttons to start the ow of water
through the portalter. You should allow
hot water to pass through the empty
portalter(s) for a few seconds each time,
in order to preheat the portalter.
Note: It is important to leave the portalters
installed in the espresso machine when
not in use. The portalter must remain
heated for the brew process to function
correctly.
5) Brewing coffee
Now you can brew an espresso. Disengage
one of the portalters, ll the lter with
ground coffee, tamp the ground coffee
with the tamper supplied (exerting a force
of 20 kg) and re-engage the portalter to
the group. Use the tap lever to begin the
brewing process.
Note: Some baristas believe it is important
to press the brewing device prior to
installing the portalter to allow the water
to ush any remaining coffee oils and
particles from the group. Some also ush
just after brewing coffee for the same
reason. Please experiment to nd the best
possible procedure for you.
6) Water pump
Whenever you are brewing coffee, and you
can adjust the pump pressure by turning
the by-pass screw (below the plug located
on the side to which the pump power
supply is connected) clockwise to increase
and counter-clockwise to reduce pressure.
Adjust pressure only when at least one
group is brewing coffee.
Note: When the heating element in the
coffee boiler is energized, the water will
expand increasing the start-up pressure.
Once the maximum pressure is reached,
the expansion (safety) valve should start
working by discharging a few drops of
water, in order to prevent such pressure
from exceeding 11-12 bar.
In case the pressure exceeds 12 bar,
you must adjust the expansion valve by
unscrewing the cap slightly. If this is not
sufcient, remove the valve and clear away
any calcium deposits. This remedy is valid
also in case the valve remains open in the
drain position (i.e. the pressure cannot
increase to 8 bar approx.).
7) General notes for coffee preparation
The portalters must remain heated since
they are at the lowest position of the
group itself, and they are partially isolated
due to the rubber gasket between them.
This can be accomplished by leaving the
portalters installed in the machine when
not in use. The portalters may also be
Expansion Valve Filter Basket
Porta Filter
O-ring Gasket
Double Spout