La Marzocco Strada AV User Manual

manual

strada av

The Strada AV is characterized by its underlying mechanical features and design of the Strada. The initials “AV” refer to a feature whereby brewing is activated by a three button keypad where the doses are counted by a flowmeter for each group. This model includes proportional steam valves, both featuring anti-resuction valves.

strada av

Operating Manual V1.0 - 11/2015

MAN.16.1.01

Chapters

1.	General Warnings and Safety Specifications	page 3
2.	Definition of Available Models	page 7
3.	Installation	page 10
4.	Machine Operation and Coffee Preparation	page 18
5.	Dispensing Steam and Hot Water	page 21
6.	Maintenance and Periodic Cleaning Operations	page 22
7.	De-commissioning and Demolition	page 24
8.	Mandatory Maintenance and Check-up Operations	page 25
9.	Software Programming Guide	page 26

La Marzocco S.r.l.

Via La Torre 14/H

Località La Torre

50038 Scarperia e San Piero

(Firenze) - ITALIA

www.lamarzocco.com

[e-mail]

T: [phone] F: [phone]

certifications available:

EN

1. General Warnings and Safety Specifications

WARNING

CAUTION

years of age) with reduced

This machine is for professional

As already mentioned in

physical, sensory or mental

use only and should be installed

the preceding notes, the

capabilities,

or

lack

of

in locations where its use and

manufacturer shall not be held

experience and knowledge,

as

long

as

they have

maintenance is restriced to

responsible for damage to

been given

supervision or

trained personnel. Children are

objects, animals and/or people

instructions

concerning

forbidden to operate or play with

whenever the machine has not

the use of the appliance

the machine.

been installed according to the

by

a

person

responsible

instructions contained in this

for their safety and if they

WARNING

manual, and is not used to do

understand dangers.

The Coffee machine must be

what it was designed for (i.e.

• Children

should

be

placed in a horizontal position on

preparing coffee and hot drinks).

supervised

to

ensure

that

a counter higher than 80 cm from

1) Important safeguards

they do not play with the

the ground.

•

The

weighted

sound

appliance.

• Keep the appliance and

pressure

level

of

the

machine

is

lower than

its cord out of the reach of

WARNING

children less than 8 years

70dBA.

This machine is not suitable

•

Use,

cleaning

and

of age.

for outdoor use. Jets of water

maintenance of this coffee

2)

This

operating

manual

should not be used to clean the

machine

are

realized

machine, nor should it be placed

is an integral and essential

by

people

(including

where water jets are used.

children

more

than

8

part

of

the

product

and

3EN

EN

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

4

on any further and contact your	codes.			The		installation
dealer or retailer immediately. They	also must comply to the
will send out specialized personnel	manufacturer’s					instructions,
authorized to perform service on	and must be performed by
the espresso machine.	qualified				and	authorized
5) Packaging (boxes, plastic	personnel.
bags, foam parts and whatever	8)	Incorrect			installation		may
else) must not be left around	cause		for	injury/damages to
within easy reach of children,	people, animals or objects, for
due to the potential danger it	which the manufacturer shall
represents, nor be discarded	not be held responsible.
in the environment.	9) Safe electrical operation of
6) Check to see that data on	this device will be achieved
the rating plate corresponds	only when the connection to
to those of the main electrical	the power outlet has been
supply which the machine will	completed				correctly		and
be hooked up to.	in observance of all local,
7) The equipment must be	national,			and		international
	electrical			codes		and safety
installed to comply with the	regulations,				and	particularly
applicable federal, state or	by	grounding				the	unit.
local electrical and plumbing	Make		sure		grounding		has

been done properly as it represents a fundamental safety requirement. Ensure qualified personnel check 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 responsibleforanydamagescaused 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 networkEN

5

EN

by unplugging the cord or by switching off the relative circuit breaker. For any cleaning operation, follow exclusively the instructions contained in this manual.

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 qualified and authorized professional to performanyrepair. Anyrepairs 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.

6

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 qualified professionals exclusively.

20) Common Dimensions, Weights,

and Features

A

B

C

STRADA AV	2 gr.	3 gr.
A [mm]	800	1000
B [mm]	675	675
C [mm]	475	475
WEIGHT [kg]	70	91

2. Definition of Available Models

This operating manual refers exclusively to the following models, of our own manufacture:

STRADA, model AV 3 groups

9	8	5	2	7	3	6	10	8	9	Legend
										1	Main Switch
										2	Pressure Gauge (steam boiler)
										3	Pressure Gauge (coffee boiler)
										4	Brew Groups
										5	Cup Warmer Button
										6	Tea Water Button
1										7	Digital Display
										8	Steam Wand
										9	Steam Wand Lever
										10	Hot Water Wand
										11	Removable Drain Tray
										12	Group #1 Programming Keypad
										13	Hot Water Mix Valve

12 4	4	4	13 11	For additional information on electronics,
				keypads, and software programming,

please see the section entitled Software Programming your Espresso Machine.

Fig. 1 - Model AV with 2 or 3 groups EN

7

EN

1) General Description

The machine is built in 2 and 3 coffee group versions and is essentially composed of the following parts:

•Steam Boiler (produces steam and hot water);

•Coffee (“saturated”) boiler;

•Brewing groups;

•Exterior Cover;

•Water pump.

2) Description of the various parts

• Steam Boiler

The Steam Boiler consists of a cylindrical tank, of varying length according to the number of coffee groups, which is made of AISI 300 series stainless steel. Each unit is subjected to a hydraulic test, at a pressure of 6 bar, and has an operating pressure of 1.3-1.5 bar. The following is a list of effective volumes and power ratings according to the number of groups installed:

2 groups	8,2 liters	3000 Watts
3 groups	11,8 liters	4000 Watts

Covers are welded at either end of the cylindrical tank and on one of them there is a housing for the water heating element, which allows the steam boiler to reach operatingpressurewithinapproximately25 minutes. Operating pressure is maintained

8

by temperature probe and PID controller. The steam boiler has various fittings used for safety devices, for supplying hot water and steam, and for the heating element.

Composed of AISI 300 series stainless steel tube. Heating is accomplished through an immersion-type plated heating element.

•Operating pressure of 1.3-1.5 bar, controlled automatically through a pressure switch or a temperature probe, adjusted to open the heating element supply circuit at 1.5 bar and close it at 1.3 bar.

•The pressure is displayed by means of a pressure gauge with a scale of 0 to 2 bar.

•Safety device, based on an expansion type mechanical valve, with counteracting spring adjusted to 1.8 bar.

•Testing: hydraulic test at 4.5 bar performed on ready-to-use small boilers, at our factory.

•Coffee Boiler

The Coffee Boiler consists of a cylindrical tank made of AISI 300 series stainless steel. One each group (hot water generator for brewing coffee).

Each unit is subject to a hydraulic test, at a pressure of 18 bar, and has an operating pressure of 9 bar. The following

is a list of effective volume and power ratings according to the number of groups installed:

2 groups	2 x 1,3 liters	2 x 800 Watts
3 groups	3 x 1,3 liters	3 x 800 Watts

Covers are installed at either end of the cylindrical tank and on one of them there is 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. The brewing groups are installed on the boiler.

Composed of an AISI 300 series stainless steel tube. Heating is accomplished through an immersion-type plated heating element.

•Operatingtemperature95°C(adjustable), controlled automatically by an electronic temperature controller with an accuracy of 0.2 °C. Operating pressure of 9 bar, developed mechanically by a special

positive-displacement pump which is activated automatically every time coffee is brewed.

•Pressure is displayed through a pressure gauge with a scale from 0 to 15 bar.

•Safety device, based on an expansion type mechanical valve, with ounteracting spring adjusted to 13.5 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 portafilter used to hold the ground coffee; the espresso flows through the brewing group, through the portafilter basket, through the portafilter 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 autofill system whenever the water boiler needs to be replenished.

• Machine CE plate:

STRADA	3AV	ST000000	01/16
220-240	7324	32	50/60
			0.9
	1.3x3		11.8

• Machine ETL plate:

STRADA 3AV				ST000000
01/16			29-33

161

9EN

3. Installation

RATED

RATED

COFFEE

STEAM

TOTAL

POWER CORD

MODEL/SERIES

GROUP

V/Hz

POWER

INPUT

BOILER

BOILER

SIZE (mm²)

(W)

(A)

WATTAGE

WATTAGE

WATTAGE

2GR

AC220-240V/60Hz

20-22

4600 SEE ELECTRICAL

AC208-240/60Hz

4600

23

1600

3000

STRADA AV

AC380/50Hz

12

CONNECTIONS

AC220-240V/60Hz

25-29

2400

4000

6400

3GR

AC208-240/60Hz

6400

30,5

FOR DETAILS

AC380/50Hz

16

POWER CORD:

3 X WIRES 1 X BLUE (NEUTRAL)

5 X WIRES 1 X BROWN (PHASE) 1 X BLUE (NEUTRAL)

WARNING

220V

1 X BROWN (PHASE)

380V

1 X GRAY (PHASE) 1 X YELLOW & GREEN (GROUND)

1 X YELLOW & GREEN (GROUND)

1 X BLACK (PHASE)

THE DETAILS ON THE LEFT DESCRIBE

HOW TO CONNECT EACH WIRE TO THE PLUG.

RESPECT ALSO THE LOCAL SAFETY

REGULATIONS.

210 mm

HERE THE POSITION OF THE POWER CORD AND

WATER INLET HOSES

4 in.

55 mm

HERE THE POSITION WHERE WE

2,1 in.

FROM 80 TO 100 mm SUGGEST TO MAKE THE HOLE

FROM 3 in. TO 4 in.

ON THE TABLE

mm in.

130 mm 5,1 in.

94 mm

3,7 in.

425 mm 16,7 in.

280 11

328 mm

13 in.

HERE THE POSITION

OF THE DRAIN TUBE

	140 mm
	5,5 in.	775 mm (2 groups)	975 mm (3 groups)	12,5 mm
		30,5 in. (2 groups)	38 in. (3 groups)	0,5 in.
EN		POSITION OF THE HIGH LEGS MACHINE
		Fig. 2 - Installation guide
	10

WARNING

The machine is intended to be permanently connected to fixed 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 and Steam 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 - Steam Boiler 256°F / 124°C)

WARNING

Replace fuses with the same size, type and rating F1 = 2A, 250V

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 4 and 8 bar if sufficient 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 firmly secured to the body of the machine in order to prevent inadvertent stress on the power

cables.

WARNING

This machine should not be installed in kitchens.

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

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.

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. 11EN

EN

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.

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 flat 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 4 and 8 bar.

•This machine complies with the standard 61000-3-11, the impedance at the supply interface must be Zmax=

0.11 Ω.

12

1) Installation guide

For best results, STRADA needs a minimum flow of water in input of 100 l/h and a pressure of 2.5 bar.

Installations that do not meet these requirements will cause a shorter life of the pump and may cause a high noise level during coffee brewing.

If the pressure and flow are not adequate, air bubbles may develop within the gears. This is called cavitation. Cavitation can impair the performance of the espresso machine.

If the incoming water of the espresso machine falls outside the recommended parameters, it is necessary to carry out one of the following installations:

Pressure lower than9 bar

Flowrate lowerthan 100 l/h

Installation with the rotary pump immediately after the water treatment system, upstream of thetee.

POWER SUPPLY
CORD	STEAM	COFFEE
	BOILER	BOILER
MAIN SWITCH		TEE FITTINGS
AND ELECTRICAL SUPPLY CONNECTION
WASTE/DRAIN
		WATER CHECK POINT:
		FLOW RATE < 100 l/h
		PRESSURE ≤ 9 BAR
		BRAIDED HOSE
		MAIN WATER
		SUPPLY VALVE
		WATER TREATMENT
ROTARY PUMP		RECOMMENDED VALUES
		www.lamarzocco.com/water_calculator

Fig. 3 - Installation guide - type 1

Pressure higher than 9 bar

Flow rate lower than 100 l/h

Installation of the pressure reducer immediately after the water treatment system, upstream of the rotary pump.

Installation of the rotary pump (set to 9 bar) immediately after the pressure reducer, upstream of the tee.

POWER SUPPLY	STEAM	COFFEE
CORD
	BOILER	BOILER
MAIN SWITCH		TEE FITTINGS
AND ELECTRICAL SUPPLY CONNECTION
WASTE/DRAIN
		WATER CHECK POINT:
		FLOW RATE < 100 l/h
		PRESSURE > 9 BAR
		BRAIDED HOSE
		PRESSURE REDUCER
		PRESSURE ≤ 9 BAR
		WATER TREATMENT
ROTARY PUMP		RECOMMENDED VALUES
		www.lamarzocco.com/water_calculator

MAIN WATER SUPPLY VALVE

Fig. 4 - Installation guide - type 2

13EN

EN

2) Accessories

Check the package to make sure that the following accessories are included:

•a number of 1-dose and 2-dose portafilters orresponding to the number of groups;

•replacement 1-dose and 2-dose filters (one of each);

•1 tamper;

•1 blind filter;

•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;

•1 TEE Fitting.

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 specification 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

14

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 fivepole 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 filling out the online water calculator on our website: LA MARZOCCO WATER CALCULATOR (http:// www.lamarzocco.com/water_calculator/).

4) Flowmeter safety removal

Before switch on, remove the clamp from the flowmeter located inside the machine, as indicated by the adhesive label applied on the main switch. Also remove the label from the main switch.

5) 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.

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), 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 efficiency. If these parameters are not present, a specific filtration device should be installed, while always adhering to the local national standards in place regarding potable water.

Then connect the inlet of the water filter/ softener (if present) to the drinking water supply using one of the supplied stainless steel braided hoses. Before connecting the filter to the water pump, flush the water supply line and the filtration 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 filter/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.

6) 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 figures:

- View of the connectors;

Machine connector Pump connector

15EN

- Cable connection;	7) 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
- Cable tightening;	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 specifications 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

EN

N.B.: Test water quality (the warranty is void if water parameters are not within the range specified in the section “installation”)

16

4. Machine Operation and Coffee Preparation

CAUTION

Never remove the filter holder when water is being delivered. This operation can be extremely dangerous since the high pressure built-up inside the blind filter 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.

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.

IMPORTANT

To improve the flavor of the espresso, the temperatureofthewaterinthecoffeeboiler and therefore of the groups may eventually be raised or lowered via the digital display (please consult the Software Programming Manual for detailed instructions).

1) Starting the espresso machine

a) Filling the boilers with water

Once the installation procedures have beencompleted,itisnecessarytofillthe boiler tanks with water. Complete the following procedure to properly fill the boiler tanks:

• Coffee boiler

The water flows inside the coffee boiler directly, as soon as the water system and purifier taps (if present) are opened.

Since the inflow 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 remove the plastic keypad from the top of the group.

Loosen the bleed screws one at a time to allow air to escape until water flows from below the screw head. Tighten the screw to stop the water from flowing. Over tightening can cause damage to the sealing washer and the group cover. Repeat this procedure on all groups.

• Steam boiler

Turn the main switch to position “1” or ON, the automatic steam boiler level gaugeEN

17

EN

will be switched on, activating the auto-fill solenoid valve and the motor pump. This will fill the steam boiler to a predetermined level and will shut off when full.

Note: Air inside the steam boiler may build up pressure (which may be detected through the pressure gauge).

Once the pump stops, check the display, the message “Coffee Boiler Filled?”

should be displayed. Press to confirm that the preceding procedures are complete.

The installation is now complete and the espresso machine should be heating to operating temperatures.

Display

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

18

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 13.5bar.

Expansion

Valve

In normal operating conditions, the coffee boiler pressure transducer, while brewing, can read anywhere from 0-12 bar when brewing.

When the steam boiler reaches operating temperature, the light on the Tea dispense button will switch on.

3) Brewing after first installation

Once the first installation procedures are finished, before proceeding with brewing coffee, hot water and steam, please follow these steps:

•Engage the portafilters by inserting them into each group, brew water through each group for at least two

minutes.

• Being careful to avoid burns, turn on each steam wand for at least one minute.

•Turn on the hot water valve for the time necessary to allow the following

quantities of water to be brewed:

-At least 1 liter for a 1/2 group machine

-At least 2 liters for a 3 group machine

4) Installing the portafilters

Install the portafilter(s) by inserting them into the group and rotate the handle from left to right. When the portafilters are inserted properly, you can press any of brew buttons to start the flow of water through the portafilter. You should allow hot water to pass through the empty portafilter(s) for a few seconds each time, in order to preheat the portafilter.

Note: It is important to leave the portafilters installed in the espresso machine when not in use. The portafilter must remain heated for the brew process to function correctly.

Filter Basket

Porta Filter

O-ring Gasket

Double Spout

5) Brewing coffee

Now you can brew an espresso. Disengage one of the portafilters, fill the filter with ground coffee, tamp the ground coffee with the tamper supplied (exerting a force of 20 kg) and re-engage the portafilter to the group. Press a button on the keypad to begin the brewing process.

Note: Some baristas believe it is important to press the brewing button prior to installing the portafilter to allow the water to flush any remaining coffee oils and particles from the group. Some also flush just after brewing coffee for the same reason. Please experiment to find 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 sufficient, 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 portafilters 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 portafilters installed in the machine when not in use. The portafilters may also be actively heated. This procedure may be carried out by brewing some hot water through the portafilter then turning off the water flow, before making coffee.

It is important to remember that coffee left over in the filters must be removed only when you need to prepare another cup, and only at that time should you place a new dose of ground coffee in the filter.

The size of the coffee granules is extremely important in preparing a good cup of coffee, other than the type of coffee mix used, quite obviously. The ideal grinding can be determined by making various coffees using the amount of ground coffee that you would normally use for each cup (we recommend at least 6-7g). The best grinding is that which allows coffee to flow out from the filter holder spouts neither too slowly (drop by drop) nor too quickly (quick light brown flow). A general rule is that a double dose should dispense approximately 25cc or 2 fluid oz. of espresso in approximately 25 seconds.

8) Cup Warmer

Press Cup Warmer Button for enabled or disabled the cup warmer. This function work in two modes continuous or timed (see the Software Programming Manual for further instructions).

Cup Warmer Button

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5. Dispensing Steam and Hot Water

1) Steaming milk or other liquids

In order to allow for any condensed water in the wand to be released ALWAYS allow some steam to be discharged by turning on the valve before inserting the steam wand into the pitcher of liquid to be heated.

Dip one of the 2 steam wands (part 8, page 7) which are connected to the steam valve, into the liquid to be heated, turn the steam knob gradually until steam comes out at the end of the wand.

The steam will transfer heat to the liquid raising its temperature up to boiling point. Be careful not to allow liquid to overflow in order to avoid severe burns.

In order to prevent the heated liquid from being sucked back into the steam boiler it is recommended before using the wand that you purge the steam valve and steam wand by opening the valve for a few seconds to allow steam to escape to the atmosphere from the end of the steam wand. Failure to do so can cause the heated liquid to transfer from the heated liquid container to the steam boiler (via vacuum created from cooling parts).

This condition is undesireable and can cause contamination in the steam boiler. After use remember to purge the wand by opening the steam valve for a few seconds, and then clean the outside of the wand itself with an appropriate cloth.

In order to prepare milk for making cappuccino with the right amount of foam, go through the following steps:

• After purging the steam wand place the container half-full of milk underneath, carefully open the steam valve and raise the container so as to bring the wand end to a point just below the surface of the milk; at this point, move the container up and down just enough to dip the nozzle end in and out of the milk until you get the right amount of foam, bring the temperature of the milk almost up to 149/158°F or 65/70°C. You can then pour this milk into a cup containing warm espresso and you will end up with a fresh cup of cappuccino.

2) Preparing tea and other hot drinks.

TE'

You may dispense hot water by using the fixed nozzle (part 6, page 7). To dispense hot water, press the tea water button.

This button commands hot water delivery. The temperature of the water may be adjusted by adjusting the mixing valve.

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6. Maintenance and Periodic Cleaning Operations

WARNING

If the above-mentioned instructions are not adhered to the manufacturer cannot be held responsible for damage to persons or things.

WARNING

In order to prevent cracks or leakage: do not store or install the coffee machine in places where temperature may cause water in boiler or hydraulic

system to freeze.

WARNING

The machine is intended to be permanently connected to fixed wiring, and it is advisable that a residual current device (RCD) with a rated residual operating current not exceeding 30mA is

installed.

WARNING

The machine must be installed so that qualified technical presonnel can easily access it for eventual maintenance.

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

Do not remove the filter holder while relative group is brewing hot liquids.

The Coffee Boiler contains water at elevated temperature. Water temperature over 125°F / 52°C can cause severe burns instantly or death from scalding.

WARNING

This machine is for professional use only and should be installed in locations where its use and maintenance is restriced to trained personnel.

WARNING

Jets of water should not be used to clean the machine, nor should it be placed where water jets are

used.

1) Cleaning groups and drain wells

-Put a tablespoon of detergent powder for coffee machines into the blind filter, supplied with the machine, and tighten it onto the group you want to clean by using a normal filter holder.

-Turn the Paddle Valve on and off approximately 10 times (10 seconds intervals) on each group.

-Rinse the group using a normal filter by running hot water through it several

times.

2) Cleaning filters

- Put 2 or 3 teaspoons of detergent powder

for coffee machines in about 1/2 a litre

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EN

of water inside a heat-resistant container and boil.

-Dip filters in the boiled solution and leave them fully submerged for about 30 minutes.

-Rinse thoroughly with clean water and run hot water through one group several times with the filters in place.

-Make one cup of coffee and discard in order to remove any unpleasant flavor.

3) Cleaning filter holders (portafilters)

Using the proper cleaning tool (brush)

wash the filter holders under hot water, a neutral detergent may also be used.For extraordinary cleaning see the Portafilter Manual.

4) Cleaning the drain collector

Remove the drain tray grill at least twice a week and clean, pull out the water drain collector and clean it thoroughly. Inspect and clean also the drain box and remove any leftover grounds.

5) Cleaning the body

Wipe the stainless steel surfaces with a soft, non abrasive cloth in the direction of the glazing marks, if any. Do not use any alcohol or solvents whatsoever on painted or imprinted parts in order not to damage them.

6) Cleaning the hot water and steam nozzles

Steam nozzles must be cleaned immediately after use with a damp cloth and by producing a short burst of steam

so as to prevent the formation of deposits

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inside the nozzles themselves, which may alter the flavor of other drinks to be heated. Hot water nozzles must be cleaned periodically with a damp cloth.

7) Cleaning the diffuser screen

- Due to filter holder discharge operations (subsequent to coffee brewing), a certain amount of coffee grounds may slowly build-up on and obstruct, even partially, the diffuser screen. To clean it, you must first remove it by unscrewing the diffuser screw.

GROUP

ASSEMBLY

DIFFUSER

SCREEN

DIFFUSER

SCREW

-Put 2 or 3 teaspoons of cleaning detergent for coffee machines in about 1/2 a litre of water inside a heat-resistant container and boil.

-Place the diffuser screen(s) and diffuser screw(s) in the solution and leave them fully submerged for about 30 minutes. Rinse thoroughly with clean water. Install and run hot water through each group several times with the screen installed.

8) Water Filter/Softener

Pleaseseethedocumentationaccompanying the water filter/softener for proper operating and cleaning instructions.

9) Depressurize the steam boiler

Press and hold the encoder knob to set the espresso machine to “OFF”, then push down the steam lever in order to depressurize the steam boiler.

IMPORTANT

If the machine has not been used for more than 8 hours or, in any case, after long periods of being idle, in order to use the machine to its full potential it is necessary to perform some cleaning cycles before brewing beverages as follows:

-Groups: with the portafilters engaged in the groups brew water through each for at least two minutes

-Being careful to avoid burns, turn on each steam wand for at least one minute.

-Turn on the hot water valve for the time necessary to allow the following quantities of water to be brewed:

At least 1 liter for a 1/2 group machine At least 2 liters for a 3 group machine

If the machine is not going to be used for long periods of time, it is advisable to follow these safety indications:

-Disconnect the machine from the water mains or interrupt the water connection via a mains tap.

-Disconnect the machine from the electrical mains.

7. De-commissioning and Demolition

1) De-commissioning and demolition

Start by setting the main switch to the “0” or OFF position.

Disconnecting from the power outlet

Disconnect the espresso machine from the electrical network by switching off the associated circuit breaker or circuit protection device. Remove the power supply cord from the power connection. Remove the Pump Motor Power Cord from the water pump motor.

Disconnecting from the water system

Shut off the water supply by closing the specific tap located upstream of the water filter/softener inlet. Disconnect the water pipe at the water filter/softener inlet. Remove the hose connecting the espresso machine to the water pump. Remove

the reinforced plastic tubing on the drain connection.

At this point, the machine may be removed from the bar, being very careful not to drop it or squash your fingers.

The machine is made out of various materials and therefore, if you do not intend to put it back in service, it must be taken to a special disposal company which will select the materials which can be recycled and discard the others.

Current regulations make it illegal to discard such machine by leaving it on public grounds or on any private property.

Recycling notice: Warning for the protection of the environment.

Used Electrical and electronic waste contains hazardous but also valuable and scarce materials which should be recovered and recycled properly. We kindly ask that you contribute to the protection of the environment and natural resources by delivering used equipment to the relevant recycling locations if such locations are available in your country.

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8. Mandatory Maintenance and Check-up Operations

These operations are in addition to the Maintenance and Periodic Cleaning Operations as specified in Chapter 6.

The following maintenance and check-up operations sould be carried out by a qualified technician.

The time required for the periodic maintenance is determinated by the quantity of daily work and/or coffee consumption.

N.B. These periodic maintenance operations are not covered by warranty.

	EVERY THREE/FOUR MONTHS
▪ Replace group gaskets	▪ Check brew temperature	otherwise warranty is voided)
▪ Replace diffuser screens	▪ Check that brew pressure is	▪ Check filter basket condition
▪ Clean auto-fill probe	at 9bar	▪ Check shot volumes
▪ Check vacuum breaker for	▪ Check all switches for proper	▪ Test flowmeter’s ohm value
proper operation	operation	(ohm value is acceptable if
▪ Inspect water inlet valve	▪ Check/note water hardness	greater than 1.8 K ohm, and
▪ Inspect drain system for leaks	(Water quality must be within the	less than 2.2 K ohm)
or clogs	range of parameters specified
▪Check flow rate for each group	in the chapter on Installation,

	EVERY YEAR (in addition to the above)
▪ Replace portafilter baskets	▪Inspect boilers safety switches	tightness at 2,4Nm of each
▪ Inspect group valve plungers	▪▪ Inspect electrical wiring	cable on the terminal block.
▪ Inspect vacuum breaker	condition
▪ Inspect expansion valve	▪ Replace over-pressure valve
▪ Inspect electrical wiring	(safety valve)
condition	▪ Accurate control of the

EVERY 3 YEARS (in addition to the above)

▪ Check the condition of the inside of boilers and if necessary rinse out with a proper cleaning product allowed for food and beverage appliances.

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25EN

9. Software Programming Guide

Programming Introduction
Digital Display	page 27
Programming Keypad	page 28
Start Up Procedures	page 29
Shut Down Procedures	page 30
Accessing Programming Mode	page 31
Cleaning Cycles	page 32
“Barista” Programming
Program Doses	page 33
Tea Dose	page 41
Coffee Boiler	page 43
Pre-Infusion or Pre-Brewing	page 45
Cup Warmer	page 46
Exit Menu	page 47

“Technical” Programming
Language	page 48
Temperature Measurement Units	page 49
Name	page 50
Program Doses	page 51
Tea Dose	page 59
Coffee Boiler	page 61
Steam Boiler	page 63
Pre-Infusion or Pre-Brewing	page 68
Crono Function	page 69
Clock Adjust	page 70
Cup Warmer	page 71
Auto ON/OFF	page 75
Eco Mode	page 77
Coffee Dose Counter	page 79
Filter Alarm	page 81
Reset	page 83
Update Firmware	page 84
Exit Menu	page 85
Troubleshooting	page 86

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Programming Introduction

Description

•This espresso machine has a CPU and many configurable settings.

•Additionally, there are many feedback controls employed in this espresso machine to troubleshoot problems should they occur.

•The following is a brief introduction to the controls and display and how they interact with the operator.

Digital Display

1	2			3	1	Digital display	5	2nd group coffee boiler temperature
	LaMarzocco 09:30				2	Name	6	3rd group coffee boiler temperature
	94.5 94.6 94.5 SB				3	Daily timetable	7	Steam Boiler
					4	1st group coffee boiler temperature	8	Heating indicator (on during heating,
	4	5	6	7	8			off when the temperature has been
								reached)

The digital display is a backlit display capable of displaying 2 lines of 16 characters. The display enables the operator to interact with the espresso machine to visibly change parameter values. The display also provides valuable information to the operator.

There are several warnings that the can be displayed to alert the operator of an unusual condition or a fault. Additionally, simple messages are displayed alerting the operator that an action has been started or that a process needs to begin. EN

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