La Marzocco GS3 Espresso Machine User Manual

manual

gs3

Imagine if the sky’s the limit, what would the ultimate light duty/home

machine be? That was the question La Marzocco set out to answer.

Years of research and development yielded the creation of a yet another

standard setting espresso machine: the GS/3. With La Marzocco performance

and technology, the GS/3 is designed for light commercial applications,

including restaurants, ofces, catering, or the ultimate home coffee bar. All

the features and performance of a larger La Marzocco in a compact footprint.

gs3

Operating Manual V2.0 - 11/2019

MAN.2.1.02

certications available:

La Marzocco S.r.l.

Via La Torre 14/H

Località La Torre

50038 Scarperia e San Piero

(Florence) - ITALY

www.lamarzocco.com

[email protected]

T: +39 055 849 191

F: +39 055 849 1990

Original instructions veried by the

manufacturer.

Scan QR Code to view the complete

Software Programming Guide available on

the techcenter website.

Printed on recycled paper.

Chapters

1. General Warnings and Safety Specications

2. Accessories

3. Machina Description

4. Installation

5. Operation

6. Key Features

7. Preventative Maintenance and Cleaning

8. Mandatory Maintenance and Check-up Operations

9. Installation Guide

page 3

page 7

page 8

page 9

page 16

page 18

page 20

page 23

page 24

10. Software Programming Guide page 35

1. General Warnings and Safety Specications

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

must be supplied to users.

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

The Coffee machine must be

placed in a horizontal position on

a counter higher than 80 cm from

the ground.

CAUTION

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

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.

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

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 networkby

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 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.

20) These instructions are also

available in an alternative

format on a website

http://techcenter.lamarzocco.com.

21) Minimum requirements for

WiFi connection:

• device running Android

version 6+ or iOS version

10+;

• wireless network 2.4 GHz;

• La Marzocco app available

at the ofcial stores Play

Store and App Store.

GS3 AV

A [mm]

B [mm]

C [mm]

PESO [kg]

410

530

355

22) Dimensions and weights common to GS3

machines

410

530

441

F.3.029 F.3.028.01 F.3.027.01 F.3.026.01

F.3.031.01(U.S.A.) F.3.030.01

UT003

V067

L111/2NAC

L111/1AC

L120/2A

L115/C

L325 (CE)

L326 (ETL-USA)

F.8.002

H.1.010.01

F.8.003

L312

L308

913 (CE) / 914 (ETL-USA)

2. Accessories

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

QTY. PART NO. DESCRIPTION

L111/2NAC

PORTAFILTER

ASSEMBLY, DOUBLE

SPOUT, S/STEEL

1 L111/1AC PORTAFILTER

ASSEMBLY, SINGLE

SPOUT, S/STEEL

1 L115/C PORTAFILTER BASKET,

BLIND

1 F.3.029 PRECISION FILTER

BASKET 7gr (SINGLE)

1 F.3.028 PRECISION FILTER

BASKET 14gr

(DOUBLE)

1 F.3.027 PRECISION FILTER

BASKET 17gr

1 F.3.026 PRECISION FILTER

BASKET 21gr

1 F.3.030/

F.3.031

TAMPER (ACCORDING

TO MARKET)

1 UT003 HEX KEY, 5mm

2 L120/2A WASHER, FLAT,

SEALING TYPE, M6

(12X6.25X0.75)

1 V067 ESPRESSO MACHINE

CLEANER

1 913 (CE)

914 (ETL)

WATER SUPPLY AND

DRAIN CONNECTION

KIT

Figure 1 - Accessories

3. Machine Description

paddle group and handle

(MP model)

group cover

group head

(AV model)

cup tray

main power switch

pressure gauge

(steam boiler)

pressure gauge

(coffee boiler)

steam wand

steam activation

lever

hot water dispensing

spout

drain box

temperature adjustment

knob for hot water

keypad

display

Figure 2 - Machine Description

4. Installation

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 0,2 and 0,6 MPa 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

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

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 machine should not be

installed in kitchens.

WARNING

Hazardous voltage disconnect

from power supply before

servicing.

WARNING

- U.S.A. and CANDA only - Do not

connect to a circuit operating

at more than 150V to ground on

each leg.

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 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

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 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

0,2 and 0,6 MPa.

• This machine complies with the

standard 61000-3-11, the impedance

at the supply interface must be Zmax=

0.15 Ω.

Espresso Machine Installation, GS/3

1) Fill Water reservoir with potable water.

Remove the drain tray and slide the

water reservoir until the water reservoir

ll cover is accessible. Remove the cover

and ll water reservoir with potable water.

Replace the ll cover and slide the water

reservoir to the operating position and

replace the drain tray. (See GS/3 Software

and Installation Guide for additional

instructions). In order to connect the

machine up to the water mains proceed

according to the indications given in the

Installation Guide 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),

pH should be between 6.5 and 8.5 and

the quantity of chlorides be less than

30mg/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.

In order to enable

you to check

if your water

supply is within

the suggested

ranges, La

Marzocco

machines will be

equipped with 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/).

2) Connect Espresso Machine to Power Supply.

Connect the espresso machine to a power

supply that is rated in accordance with the

serial plate on the espresso machine.

3) Filling the Boilers with Water.

Once the espresso machine has been

unpackaged, placed on a hard surface,

and with the water reservoir full, it will

be necessary to ll the boilers with water.

Complete the following steps to properly

ll the boiler tanks:

Steam Boiler: Turn the main switch to

position “1” or ON, the automatic steam

boiler level system will be switched on,

activating the auto-ll solenoid valve and

the water pump. This will ll the steam

boiler to a predetermined level and will

shut off when full.

NOTE: It may be necessary to re-ll the water

reservoir during this process. Check to see if the

“Water Tank Empty” error message is present on

the display before continuing.

Coffee Boiler: The water ows inside the

coffee boiler directly when the water pump

is activated. When the GS/3 is turned on

the electronics will activate the water

pump to ll both boilers. 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 boiler. All air must be

removed in order to completely “saturate”

the coffee boiler/group assembly. To

remove the air from the boiler (“bleed the

groups”) remove the group cover from the

top of the group head. Then loosen the

bleed screw (see picture) to allow air to

escape until water ows from below the

screw head. It may be necessary to activate

the brew process by pressing button #5

(the continuous button) to force the air out

of the group.

Tighten the screw to stop the water from

owing. Over-tightening can cause damage

to the sealing washer and

the group cap. If this sealing washer is

damaged replace washer with one included

in accessory kit. Once all air is removed

from the coffee boiler, reinstall the group

cover. For more detailed instruction please

refer the GS/3 Installation Guide.

NOTE: It may be necessary to re-ll the water

reservoir during this process. Check to see if the

“Water Tank Empty” error message is present on

the display before continuing.

4) Verify lling of Boilers.

The installation is now complete and the

espresso machine should be heating to the

operating temperatures.

Brewing after rst installation

Once the rst installation procedures are

nished, before proceeding with brewing

coffee, hot water and steam, please follow

these steps:

• Engage the portalter by inserting it into

the group head and rotate the handle from

left to right. Once the portalter is inserted

properly, you can press one of the brewing

buttons on the keypad to start the ow of

water through the portalter (AV models)

or rotate the handle from left to right (MP

models). Brew water through the group for

at least two minutes.

• Being careful to avoid burns, turn

on steam wand for at least

one minute.

• Turn on the hot water valve for the time

necessary to allow at least 1 liter of water

to be brewed.

5) Waiting for the Espresso Machine to Heat to

Operating Temperature. During this time, the

pointer of the coffee boiler pressure gauge

may reach as high as 12 bar. This may

happen anytime that the heating element

is in the “on” condition. If the pressure

exceeds 12 bar then it will

be necessary to adjust the expansion valve

in such a manner that the pressure never

exceed 12 bar.

Figure 3a - “Bleed the Group AV”

Figure 3b - “Bleed the Group MP”

Bleed Screw

5 mm Hex Key

Figure 5 - Key Pad buttons with lights on

Figure 4 - Key Pad buttons

In normal operating conditions, the coffee

boiler pressure gauge can read anywhere

from 0-12 bar. When brewing,

the pressure should be set to

approximately 9 bar. When the espresso

machine is ready to operate all lights on

the keypads will light up.

NOTE: As the steam boiler reaches operating

temperature you may hear air and steam escaping

from the boiler. This is a normal sound. As the water

boils, air in the boiler is replaced by steam and

exits through the vacuum breaker. As the boiler

get closer to operating temperature the vacuum

breaker closes and the steam is no longer able to

escape. This process allows the air in the steam

boiler to escape and to be replaced by water vapor.

Water specications table

Min. Max.

T.D.S. ppm 90 150

Total Hardness ppm 70 100

Total Iron (Fe

/Fe

) ppm 0 0,02

Free Chlorine (Cl

) ppm 0 0,05

Total Chlorine (Cl

) ppm 0 0,1

pH value 6,5 8,5

Alkalinity ppm 40 80

Chloride (Cl

–

) ppm not more 30

N.B.: Test water quality (the warranty is void if water parameters are not within the range

specied in the section “installation”)

6) Adjusting the Expansion Valve.

The expansion valve is a component

that limits the maximum pressure in the

coffee boiler. Heating the coffee boiler

causes the water within to expand. Since

the coffee boiler is completely saturated,

the expanding water causes an increase

in pressure within the boiler. Without a

safety device the increase in pressure

could cause a rupture in the boiler.

The pressure in the coffee boiler should

never exceed 12 bar. The valve is hot,

so, using adequate protection, rotate the

expansion valve clockwise to increase

pressure. To decrease pressure rotate the

expansion valve counter clockwise (See

the following diagram).

Figure 6 - Expansion Valve Adjustment

WARNING

The expansion valve can

discharge water as hot as 200°F

/ 93°C. adequate protection

for handling this component is

needed before attempting to

adjust.

7) Adjusting Water Pump Pressure.

The water pump is factory set at 9 bar

pressure. If it becomes necessary to

change the pressure please use the

following procedure:

1. Remove the left side cover assembly.

2. Locate the water pump adjustment

screw and loosen the lock nut.

3. Adjust the water pump pressure to the

desired measurement.

4. Rotate Clockwise to increase pressure

and counter clockwise to reduce

pressure.

NOTE: The water pump pressure should be

adjusted when the machine is operating

and coffee is present in the portalter.

Figure 7 - Water Pump Pressure Adjustment

1. Installing the Portalters.

Install the portalter by inserting it into

the group head and rotate the handle

from left to right. Once the portalter is

inserted properly, you can press one of the

brewing buttons on the keypad (AV model)

or move the paddle handle from right to

left (MP Model) to start the ow of water

through the portalter. Please refer to

the Software Programming Manual for a

description of the functions of the keypad.

It is important that the portalter is at

operating temperature prior to lling with

coffee. Allow hot water to pass through

the empty portalter for a few seconds

before the brewing process to pre-heat the

portalter.

Note: It is important to leave the portalter

installed in the espresso machine when

not in use. The portalter must remain

heated for the brewing process to function

correctly.

2. Brewing Coffee. It is now possible to remove

the portalter to make a coffee beverage.

Place some ground coffee in the portalter

basket using the single or double basket.

Press down on the ground coffee with the

supplied tamper and install the portalter

on the GS/3. On AV model press a brew

button to begin the brewing process, or

move the paddle handle from right to left

to begin brewing on MP model (see Fig.2).

NOTE: Some users believe it is important to

allow water to pass through the the group

head prior to installing the portalter

5. Operation

FILTER

BASKET

PORTAFILTER

DOUBLE

SNAP-ON

SPOUT

SPRING

O-RING

GASKET

Figure 8 – Portalter

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.

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.

WARNING

To avoid the risk of injury, do not

open the brew chamber during

the brew process.

to ush any remaining coffee oils and

particles from the group head. Some

also ush just after brewing for the same

reason. Please experiment to make the

best possible procedure for your coffee.

There are many techniques for brewing

espresso. You can nd instructions for

many techniques on websites, blogs and

forums. Some are even monitored by

professional baristas around the world.

3. Dispensing Steam.

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 the steam wand into the liquid to be

heated. Depress the steam valve lever to

activate the steaming process.

The steam valve has a variable ow control.

The steam valve will lock in the fully on

position only.

The steam will transfer heat to the liquid

raising its temperature. Be careful not to

allow liquid to overow in order to avoid

severe burns.

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.

NOTE: It is important to have a sufcient

volume of liquid in the steaming pitcher.

Therefore if you intend to steam small

amounts of milk it is necessary to use a

small pitcher. If you intend to steam larger

quantities of milk then it is necessary to

use a larger steaming pitcher.

Using too little milk in a steaming pitcher

can allow the milk to be “blown out” of the

pitcher. A good rule to follow is to ll the

steaming pitcher only half full of liquid.

NOTE: In order to prevent the heated liquid

from being sucked back into the steam

boiler it is recommended that you purge

the steam system after heating any liquid.

Purge the system by opening the steam

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 steaming pitcher to the steam boiler

(via vacuum created from cooling parts).

This condition is undesireable and can

cause contamination in the steam boiler.

4. Dispensing Hot Water.

You may dispense hot water by using the

hot water nozzle. To dispense hot water

press the hot water button.

This button commands the hot water

delivery. The volume of water delivered

may be adjusted via the display (see the

Software Programming Manual for further

instructions). The temperature of the water

dispensed may be adjusted by adjusting

the mixing valve under the right side cover

of the espresso machine (see machine

description diagram, Figure 2, and the

instructions on the next page).

Figure 9 - Hot Water Button

1. Controlling the Brew Process Using Volumetric

Programming.

This espresso machine allows the

volumetric programming of each of the

rst 4 buttons on each group (numbered

left to right). Please consult the Software

Programming Manual for further

instructions.

2. Hot Water Dispensing.

Hot water may be dispensed from the

Hot Water Wand on the right side of the

machine. This is accomplished by pressing

the hot water button (Fig.9). The amount

of water dispensed can be programmed via

the digital display. Please consult Software

Programming Manual for programming

instructions. The temperature of the hot

water may be adjusted slightly via the

Hot Water Adjusting Knob. This adjusting

knob is hidden under the right side panel

assembly. The knob protrudes slightly

form the bottom of the side panel. To nd

this knob, look at the bottom edge of the

right side panel.

The knob may be turned by sliding a nger

under the side panel from front to rear (to

decrease temperature) or from rear to front

(to increase temperature).

3. Quick Keys.

The GS/3 has 4 Quick Keys to allow the

user to gain quick and easy access to

important parameters that may be changed

frequently. Please see the Software

Programming Manual.

4. Water and Drain Connection Kit.

The GS/3 comes with a main water supply

and waste drain connection kit. This kit

allows the GS/3 to be connected to the

main water supply and the main waste

drain system. Instructions for installing

this kit are contained in the GS/3

Installation Manual. The conversion kit

contains the following items:

5. 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

from the same 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 actively heated by activating

one of the brew buttons to ush hot water

through the portalter then turning off the

water ow.

6. Coffee Grind.

The size of the coffee granules is extremely

important in preparing a good cup of

coffee, along with the type of coffee blend

used. The ideal grind can be determined by

6. Key Features

L325 (CE)

L326 (ETL/USA)

F.8.002

H.1.010.01

F.8.003

L312

L308

913 (CE) / 914 (ETL-USA)

WARNING

If the above-mentioned

instructions are not adhered

to the manufacturer cannot be

held responsible for damage to

persons or things.

making various coffees using the amount

of ground coffee that you would normally

use for each cup (we recommend at least

6g). The best grind is that which allows

coffee to ow out from the portalter

spouts neither too slowly, drop by drop, nor

too quickly. A general rule is that a double

dose should dispense approximately 60mL

/ 2 uid oz. of espresso in approximately

25 seconds. This time may be adjusted by

varing the coarseness of the grind.

7. IMPORTANT To improve the avor prole

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 Software Programming Manual for

detailed instructions).

N.B.

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:

• Group: with the portalter engaged in

the group brew water through it 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 1 liter of water to be

brewed.

• If using machine with water reservoir,

change the water in the reservoir daily.

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.

Cleaning (Daily)

1. Cleaning the Diffuser Screen.

During the discharge operation

(subsequent to coffee brewing), small

amounts of coffee grounds may slowly

build-up on and obstruct, even partially,

the diffuser screen. Turn off the machine

and remove the diffuser screen by

unscrewing the diffuser screw. Soak in

detergent powder liquid following the

instructions of detergent manufacturer.

Rinse thoroughly with clean water. Install

and run hot water through the group head

several times with the screen installed.

7. Preventative Maintenance and Cleaning

WARNING

The machine must be installed so

that qualied technical presonnel

can easily access it for eventual

maintenance.

WARNING

Jets of water should not be used

to clean the machine, nor should

it be placed where water jets are

used.

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

The machine is intended to be

permanently connected to xed

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 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

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

Do not remove the lter 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

If the above-mentioned

instructions are not adhered

to the manufacturer cannot be

held responsible for damage to

persons or things.

2. Cleaning the Brewing System.

Insert the blind lter into portalter

and put the correct amount of espresso

cleaning product (following the product’s

instructions) into the lter, engage the

portalter into the group you want to clean.

• Press the brewing button for said group,

as if you were making a regular cup of

coffee. Stop the water after about 15-20

seconds.

• Start and stop the group several times

until you notice clear water being released

instead of soapy water when you remove

the portalter.

Do not remove the portalter when group

is actually brewing water.

• Rinse the group using a normal lter

in the portalter, by running hot water

through it several times.

3. Cleaning Filter Baskets and Portalters.

With daily cleaning of the stainless steel

lters and portalters it is sufcient

to clean them with water and a cloth or

appropriate brush. Otherwise, using an

espresso cleaning product, following the

product’s instructions put the correct dose

in about 1/2 a litre of water inside a

heat-resistant container and heat.

• If using stainless steel portalters with

snap-on spouts remove the spout.Immerge

lters and metallic parts of portalters

(not handles) in the hot solution and leave

them submerged for about 30 minutes.

• Rinse thoroughly with clean water and

run hot water through the group several

times with the lter and portalter

engaged.

4. Cleaning the Drain Box.

Remove the drain box assembly and wash

each of the components with hot soapy

water. Rinse thoroughly and reinstall the

drain box assembly. Hand wash each part

with water containing mild soap.

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,

imprinted, or plastic parts in order not to

damage them. Clean the side panels using

a soft cloth. Do not spray the keypad or

display with any liquid. Clean only with a

damp soft cloth.

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

inside the nozzles themselves, which

may alter the avor of other drinks to

be heated. Hot water nozzles must be

cleaned periodically with a damp cloth. If

milk residue is present on the steam wand,

soak the tip in a container of hot water,

then it will be possible to wipe the tip

clean. Repeat process if residue remains.

NOTE: This cleaning schedule is based

upon a moderate to average use (20-

300) cups per day. If machine use is less

than moderate then this schedule may be

adjusted accordingly.

Cleaning (Periodic)

1. Draining Boilers. Both the coffee boiler

and the steam boiler may be drained and

relled to reduce the chance of mineral

deposits build up on the inside walls of the

inside surfaces. Additionally this draining

process can be used to remove water that

has a bad odor or taste.

Drain the Steam Boiler: Turn OFF the machine.

Remove the left side panel assembly.

Locate the ball valve on the bottom left

side of the machine. Hold the ball valve

with one tool and remove the brass cap on

the end of the valve. Move the espresso

machine close to a waste drain and tip

machine at an angle to point the valve into

the waste drain.

Drain the Coffee Boiler: Turn OFF the

machine. Using adequate protection or

an appropriate tool, loosen the expansion

valve until water begins to ow freely. Then

remove the group cap cover and loosen

the bleed screw. When nished draining

empty the drain box assembly.

Steam boiler draining: to activate this function

you need to access the programming menu

(see p. 50). Yearly, we recommend to fully

drain the steam boiler by means of the

specic drain cock located on the side of

the boiler or under the boiler.

2. Clean the Water Reservoir.

The water reservoir needs to be cleaned

periodically to ensure that no algae forms

on the inside surfaces. To clean rst remove

the water reservoir form the machine.

Disconnect the clear plastic water intake

hose. Unscrew all screws from the cover

to separate the parts. Wash all parts with

warm soapy water. Hand wash each part

with water containing mild soap.

Cleaning frequency

Daily

• Portalter

• Filter

• Diffuser screen

• Diffuser screw

• Steam wand (just after use)

• Drain grille

Weekly

• Water Reservoir

• Drain Box

Monthly

• Cleaning the hot water nozzle

8. Mandatory Maintenance and Check-up Operations

These operations are in addition to the Maintenance and Periodic Cleaning Operations as specied in Chapter 7.

The following maintenance and check-up operations sould be carried out by a qualied 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

EVERY SIX/EIGHT MONTHS (in addition to the above)

EVERY YEAR (in addition to the above)

▪ Replace group gaskets

▪ Replace diffuser screens

▪ Clean auto-fill probe

▪ Check vacuum breaker for

proper operation

▪ Inspect water inlet valve

▪ Inspect drain system for leaks

or clogs

▪ Check flow rate for each group

▪ Check brew temperature

▪ Check that brew pressure is

at 9bar

▪ Check all switches for proper

operation

▪ Check/note water hardness

▪ (Water quality must be within

the range of parameters

specified in the chapter

on Installation, otherwise

warranty is voided)

▪ Check filter basket condition

If AV Model:

▪ Check shot volumes

▪ Test flowmeter’s ohm value

(ohm value is acceptable if

greater than 1.8 K ohm, and

less than 2.2 K ohm

▪ Rebuild steam assemblies

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

appliances.

EVERY 3 YEARS (in addition to the above)

▪ Replace portafilter baskets

▪ Inspect group valve plungers

▪ Inspect vacuum breaker

▪ Inspect steam boiler

pressurestat

▪ Inspect expansion valve

▪ Inspect electrical wiring

condition

▪ Inspect boilers safety switches

▪ Replace over-pressure valve

(safety valve)

▪ Accurate control of the

tightness at 2,4Nm of

each cable on the terminal

block.

If MP Model:

▪ Disassembly and lubrication

of the components of the MP

valve

Chapters

1. Unpackage GS/3 Espresso Machine

2. Fill with water

(Initial Fill)

3. Drain box alignment

4. Connect to power supply

5. Turn on main power

6. Turn on espresso machine

7. Remove group cover

8. Remove air from group head

(bleeding the group)

9. Monitor coffee boiler pressure

10. Adjust the expansion valve

11. Monitor steam boiler pressure

12 . Brew espresso

13. Verify working boiler pressures

14. Connect to main water supply

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gs3

Installation Guide

Unpackage espresso machine

and set on a level surface. Ensure

all accessories are included with

shipment. See accessories list on

page 4 of Owner’s Manual. Check

for any visable damage to espresso

machine.

Remove/Open the ll cover and ll

the reservoir with ltered water.

Slide the reservoir back into

position and replace the drain box. Make

sure the drain box is inserted fully. The

water reservoir must make contact with the

level indicators on the rear side. Failure

to make contact will result in the display

message “Rell Tank”. The message

“Rell Tank” will be displayed anytime the

reservoir does not have contact with the

level indicators.

NOTE: The GS/3 is congured to work with

the water reservoir. To connect the GS/3

to the mains water supply and the waste

drain system, please refer to number 14

on page 24.

WARNING

The Coffee machine must be

placed in a horizontal position on

a counter higher than 80 cm from

the ground.

230 VAC and 10 amps (for

the 230 V version) or 120VAC

and 15 Amps (for the 110 V

version).

IMPORTANT NOTE:

The drain box must be installed correctly for the machine

to function properly. The drain box has two alignment

pins that mate with two alignment holes on the base of

the GS/3. When installing the drain box, ensure that the

alignment pins are inserted into the alignment holes.

It may be necessary to push slightly on the front of the

drain box to achieve proper alignment. Open the two clips

outwards to lock drain box into place.

Connect the power

cord to power supply

capable of supplying:

Alignment pins and

locking clips

Alignment holes

WARNING

The machine is intended to be

permanently connected to xed

wiring, and it is advisable that

a residual current device (RCD)

with a rated residual operating

current not exceeding 30mA is

installed.

Turn on power by pressing the main power

switch. The main power switch may be

found on the left rear of the machine.

Turn on power by pressing the power switch, the 3th button on the

keypad.

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 if other

electrical parts have been

connected improperly.

Press the “continuous” button to allow water to enter

into the coffee boiler and wait for the brewing phase to end.

Repeat twice. Now it is necessary to remove all of the air in the

coffee boiler to saturate the group. This is commonly referred

to as bleeding the group. To do this, remove the group cover

by rotating the cover counter clockwise (AV models) or remove

the pressure gauge, remove the paddle knob, remove the cover,

replace the pressure gauge and rotate the lever to the left (MP

models).

Unscrew the bleed screw

(approximately 1/2 turn) to release all

air from the coffee boiler (using the

included 5mm hex key wrench). When water

leaks from under the screw head, tighten the

screw. Note: It might be necessary to activate

the brewing process to force water into the

boiler. To do this, press the continuous

key until water leaks from under the screw

head. Then tighten screw. Replace group

cover removed in previous step. The steam

boiler will begin to ll automatically and

the reservoir will need to be relled. Once

boiler is full, heating phase will begin and

the expansion valve will need to be adjusted

immediately (see next step).

Next it will be necessary to check the expansion valve. As the coffee boiler heats to operating temperature the pressure in the

coffee boiler will rise. There is an expansion valve behind the drain tray that allows some water to escape during this process

to limit the maximum pressure in the coffee boiler to 12 bar. Please monitor the coffee boiler pressure gauge during the initial

heating process. You should notice the gauge approach 12 bar and stop. If the pressure gauge does not reach 12 bar or if

the pressure gauge rises above 12 bar, then it will be necessary to adjust the expansion valve. Please follow the next step to

properly adjust the expansion valve.

Steam Boiler

Pressure Gauge

Coffee Boiler

Pressure Gauge

Please follow this procedure if it is necessary to adust the expansion valve.

First remove the drain box to access the expansion valve. The expansion valve

protrudes through the sheet metal, has the shape of a cylinder, is brass in color

and approximately 25mm in diameter. The valve will be hot, so, using adequate

protection, in order to adjust the expansion valve rotate the valve clockwise

to raise the pressure and counter clockwise to reduce the pressure. It may be

necessary to use a tool such as a pair of pliers to rotate the expansion valve in

1/4 turn or less increments until the desired pressure is achieved. Replace the

drain box after each adjustment to ensure the machine is operating correctly.

Increase pressure

Decrease pressure

WARNING

The expansion valve can

discharge water as hot as 200°F

/ 93°C. adequate protection

for handling this component is

needed before attempting to

adjust.

You may also monitor the steam boiler heating progress by watching the Steam Boiler Pressure Gauge. The steam boiler is set

at approximately 2.0 Bar of pressure at the factory.

Once the pressure gage reaches this point the heating will stop. When the coffee boiler reaches operating temperature all lights

on the keypad will light. Should you wish to adjust the pressure of the steam boiler please refer to the Software Programming

Guide under the section “Steam Boiler temperature”.

Steam Boiler

Pressure Gauge

Coffee Boiler

Pressure Gauge

When the espresso machine is ready, place ground coffee into the

portalter and activate the brewing process. For additional information

to operate this espresso machine please refer the the Owner’s Manual

or the Software Programming Guide.

When brewing, the coffee boiler

pressure should be between 8-10 bar.

The steam boiler pressure should be

set at 2 bar but can operate at any

setting between 1.3 bar and 2 bar.

Steam Boiler

Pressure Gauge

Coffee Boiler

Pressure Gauge

1. Please follow this procedure to connect the GS/3 to

the mains water supply and the waste water drain

system:

2. Turn off the machine and remove the plug from the

socket.

3. Remove the drain box, slide out the water reservoir

from the machine base.

4. Remove the left side panel assembly. Disconnect the

hose from the top of the reservoir and remove the

water reservoir.

5. Remove the drain box cap.

6. Remove the drain box cap and insert the drain box

hose barb tting (F.8.002) Do not over-tighten this

part. Over-tightening will damage the drain box.

7. Connect the clear armoured drain hose to the hose

barb tting and to the waste drain using the supplied

hose clamp.

8. Tighten the supplied hose clamp.

9. Connect the stainless steel braided hose (L325

or L326) to the water pump and pass through the

access hole on the base under the pump. This hose

will connect the pump to the mains water supply.

10. Replace the drain box on the machine base.

11. Reconnect the power plug to the power outlet.

Turn on the water supply and the main power

switch, check for leaks.

12. Congure the “Water Tank” parameter in the software

to “not present” (see the Software Programming

Guide for directions).

13. Turn on the machine.

(These instructions are also available on the website.

http://techcenter.lamarzocco.com.)

Left side panel

assembly

Access Hole

Pump Inlet Tube

Water Pump

L325 (CE)

L326 (ETL/USA)

F.8.002

H.1.010.01

F.8.003

L312

L308

913 (CE) / 914 (ETL-USA)

WARNING

When the machine is

plumbed-in to water

mains, ensure at each

installation a new set of

tubes for plumbing and

related gaskets is used.

Description Message SolutionMessage

This message is displayed when the CPU does not

understand an instruction.

This message is displayed when the CPU does not

detect a full signal from the steam boiler within a

set time interval.

This message is displayed when the CPU does not

receive any signal from the Temperature Probe in

the steam boiler.

This message is displayed when the CPU does not

receive the appropriate signal from the owmeter.

This message is not active in MP machines.

Most likely the machine power was disconnected without rst turning off the machine through the

keypad and display. Turn off machine using main switch. This should clear the error.

When this message is displayed the CPU also shuts down and turns the machine off. Water is not

entering the boiler. Call an authorized service technician to repair this fault.

When this message is displayed the CPU turns off power to the steam boiler heating element. The

only way to reset this error is to repair the Safety Probe to restore the signal to the CPU.

When owmeter alarm is displayed, the light on the button that initiated the brew cycle will begin

to ash. This problem is a result of water not owing through the ow meter. This can be caused

by coffee ground too ne or packed too tightly (try a coarser grind or lighter tamping) or a blockage

in the tubes, a malfunctioning water pump, a faulty valve, or a damaged owmeter. Call a service

technician to x this problem.

Troubleshooting

• This espresso machine is equipped with several feedback mechanisms that alert the operator when an unusual condition occurs.

Additionally the espresso machine will warn the operator when certain parameters fall below or above the programmed point. These

errors and warnings will appear as a message in the display.

• The following section will describe errors and warnings that may appear in the display.

Corrupted

Data

Filling-up T-out

Alarm

T.Probe Unconnect

Boiler temp.

Flowmeter

Alarm

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Programming Introduction

Digital Display

Programming Keypads

Accessing Programming Mode

Start Up Procedures

Shut Down Procedures

Quick Access Programming (Quick Keys)

“Machine OFF” Programming

Language

Name

Heating (Power Mode)

Water Reservoir (Tank)

Hot Water

Steam Boiler Probe Sensitivity

Service Cycles

Temperature Measurement Units

Proportional, Integral, Derivitive Settings

PID Setting

Coffee Boiler Temperature Offset

Water Filter Alarm

Open Valve (modello AV)

Drain Steam Boiler

Safety Valve

First Installation

“Machine ON” Programming

Water Volume Programming (AV models)

Clock Adjust

Auto ON/OFF

Coffee Boiler Temperature

Steam Boiler Temperature

Pre-Infusion or Pre-Brewing (AV models)

Service Phone

Crono Function

gs3

Software Programming Guide

Programming Introduction

Description

• This espresso machine has a CPU and many congurable 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.

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.

Digital Display

LaMarzocco 09:30

Firenze Italia

The keypad has two functions. The rst is for control of the espresso. The second is for programming individual software parameters.

The button

and the

button are used to change the values of the individual parameters. The label for these buttons are

“Espresso” and “2 Espressos” respectively.

The

button is used to access certain parameters and for advancing the cursor within a parameter. The label for this button is

“Coffee”.

The button is currently not used in programming mode. The label for this button is “2 Coffees”.

The

button is used to access the programming mode. This button is also used as a function key and to scroll through parameters.

The label for this button is “Continuous”.

The

button is used to turn on and turn off the espresso machine and to activate the dispensing of the Hot Water.

MP (PADDLE) Programming Keypad (from s/n 0001 to 5418)

This keypad has the same functions as the above keys according to the identical symbols in bottom left corner.

Programming Keypad (from s/n 0001 to 5378)

+ o

The keypad has two functions. The rst is for control of the espresso. The second is for programming individual software parameters.

The button

and the

button are used to change the values of the individual parameters. The label for these buttons are

“Espresso” and “2 Espressos” respectively.

The

button is used to access certain parameters and for advancing the cursor within a parameter. The label for this button is

“Coffee”.

The button is currently not used in programming mode. The label for this button is “2 Coffees”.

The

button is used to access the programming mode. This button is also used as a function key and to scroll through parameters.

The label for this button is “Continuous”.

The

button is used to turn on and turn off the espresso machine and to activate the dispensing of the Hot Water.

MP (PADDLE) Programming Keypad (only from s/n 5419)

This keypad has the same functions as the above keys according to the identical symbols in bottom left corner.

Programming Keypad (only from s/n 5379)

Display Operating Procedure

Description

Accessing Programming Mode

• To change the values of any parameter

the operator must rst enter into the

programming mode.

• There are two levels within the

programming mode that allow the

programming of specic parameters.

• The two programming levels are as

follows

• Machine “On” - The parameters

contained within this level are ones

the operator can change to affect the

quality of the espresso.

• Machine “Off” - The parameters

contained within this level are ones

the operator can change to affect the

performance of the espresso machine.

These parameters are set at the factory

and there is no need for adjustment. La

Marzocco reccomends that no changes

are made at this level.

Programming Mode

LaMarzocco 9:30

Machine On Programming Level

While the espresso machine is on, press and hold the button . After approximately 5 seconds the fol-

lowing display appears.

This is the “Machine On” programming level. To program the dispense volume for each button see “Water

Volume Programming”. To access the “Machine On” programming mode press the button

Note: You must scroll, using the button, to the end to exit programming mode.

Machine Off Programming Level

While the espresso machine is off, press and hold the button . After approximately 10 seconds the

following display appears.

This is the “Machine Off” programming level.

Press the button to scroll through the available parameters.

Note: You must scroll to the end to exit programming mode.

200.5

F 09:30

La Marzocco T:00

Doses Setting

Select within50s

STAND-BY 09:30

Language

ENGLISH

Display Operating Procedure

Description

The following is the procedure for turning

on the power to the espresso machine.

• Please follow the procedures carefully

to avoid any damage to the espresso

machine.

• Continue with the water reservoir full or

a mains water connection.

Start Up Procedures

Turning the Espresso

Machine On

HAZARDOUS VOLTAGE DISCONNECT FROM POWER SUPPLY BEFORE SERVICING

WARNING

Turn the Main Switch to the On position.

The message at left will be displayed briey. This message indicates the revision level of the software

installed in this espresso machine. Then the following message is displayed.

To complete the turn on process, press the button and the display at left is shown. The machine begins

to automatically ll the steam boiler until full. When the espresso machine reaches operating temperature,

all keypad lights will light indicating that the espresso machine is ready to use.

NOTE: Ensure all air is removed from the group prior to staring the espresso

machine. This only needs to be completed once during the initial setup or when

water is drained from the coffee boiler.

Instructions for bleeding the groups of air can be found in the Installation Guide.

3D5 DE LUXE MAR

STAND-BY 09:30

170.5oF 06:30

La Marzocco T:00

Display Operating Procedure

Description

200.5°F 09:30a

La Marzocco T:00

The following is the procedure for turning

off power to the espresso machine.

• Please follow the procedures carefully

to avoid any damage to the espresso

machine.

• This machine has two off settings. One

setting turns off all of the components

in the espresso machine and the other

turns off power to the complete espresso

machine.

Shut Down Procedures

Turning the Espresso

Machine Off

HAZARDOUS VOLTAGE DISCONNECT FROM POWER SUPPLY BEFORE SERVICING

WARNING

The following is the procedure for safely turning off the espresso machine.

Press and hold

the button

then press the button

. The display changes to the following:

This is the OFF setting used in the normal operating conditions.

During servicing or other conditions that warrant it, the main switch should be turned to the OFF position.

The espresso machine is off and display should be blank. It is important to follow this procedure when

turning off the machine. Failure to do so can damage the electronics.

170.5

F 06:30

La Marzocco T:00

STAND-BY 09:30

Display Operating Procedure

Description

• For convenience, there is access to ve

parameters of the software without

entering program mode.

• These parameters are accessed through

the use of “Quick Keys”.

• To use the Quick Keys, press and hold

the function button and then the quick

key is accessed.

• In the current version of the software

(ver 1.15) the following quick keys are

available:

Quick Access Programming (Quick Keys)

Quick Keys

Quick Key

Number

Function

1 Group rinse cycle

2 Coffee Boiler Temperature

3 Steam Boiler Temperature

4 Pre-Brewing enable/disable

6 Machine Off function

Quick Key 1 Press and hold

the button , then

press the button .

Quick Key 2 Press and hold

the button , then

press the button .

Quick Key 3 Press and hold

the button , then

press the button .

Quick Key 4 Press and hold

the button , then

press the button .

Quick Key 6 Press and hold the button , then press the button .

NOTE: Quick Keys only function when the espresso machine is on and not brewing coffee/hot water.

N.B. MP (PADDLE) MODEL Quick Key no. 1 and no. 4 do not function because the control of the group is manual.

T. Coffee Boiler

200.5 oF

T. Steam Boiler

260.0 oF

Pre Brewing

Enabled

Rinsing in

progress

STAND-BY 09:30

Display Operating Procedure

Description

• This parameter allows the operator to

change the language of the display.

Language

English

“Machine OFF” Programming

Language

Enter into “Machine Off” programming mode.

Press the button or the button to change the language.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Name

LA MARZOCCO GS/3

STAND-BY 09:30

Display Operating Procedure

Description

Name

--------------

• This parameter allows the technician to

program a 16 character user name.

• The user name is displayed continuously

on the display on the second line.

• The user name is not displayed when

the Crono Function is ENABLED.

Name

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the ashing parameter.

Press the button to advance to the next character. Repeat step 3-4 to program remaining characters

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Name

XXXXXXXXXX

STAND-BY 09:30

Display Operating Procedure

Description

Heating

HALF

“Machine OFF” Programming

• This espresso is equipped with a power

saving feature that allows the espresso

machine to operate at lower power if

needed.

• While in power saving mode you

may experience slightly longer steam

recovery time. The steam boiler

pressure/temperature may be adjusted

to compensate for this if needed.

• There are two options in Power saving

mode:

• Full - This mode gives full power to both

the coffee boiler and the steam boiler.

On 120V model, in full power mode, a

20 Amp circuit is required.

• Half - In this mode the power is

alternated between the coffee boiler and

the steam boiler (with priority given to

the coffee boiler).

Heating (Power Mode)

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between HALF and FULL.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Heating

HALF

STAND-BY 09:30

Display Operating Procedure

Description

Tank

PRESENT

“Machine OFF” Programming

• This parameter allows the user to choose

the use of a water reservoir. If the

espresso machine is connected directly

to the water supply, then this value

should be set to “not present”.This must

be done before the machine is plumbed.

Water Reservoir (Tank)

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between PRESENT and NOT PRESENT.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Tank

PRESENT

STAND-BY 09:30

Display Operating Procedure

Description

Water

with pump

• This parameter allows the technician to

select the activation of the water pump

during hot water dispensing.

• When hot water is drawn from only the

steam boiler this parameter should be

set to “without pump”.

• If you wish to adjust temperature of water

using the Hot Water Adjusting Knob, set

this parameter to “with pump”, see page

11 for more details.

Hot Water

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change to either WITH PUMP or WITHOUT PUMP.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Water

with pump

STAND-BY 09:30

Display Operating Procedure

Description

• This parameter allow the user to set

the probe sensitivity depending of the

hardness of the water. The harder the

water, the lower the sensibility of the

probe.

ProbeSensitivity

LOW

Steam Boiler Probe

Sensitivity

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between LOW, MID and HIGH.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

ProbeSensitivity

Low

STAND-BY 09:30

Display Operating Procedure

Description

Service Cycles

“Machine OFF” Programming

• This parameter allows the user to

program a threshold number of cycles (in

multiples of 1000) when the machine

prompts for service.

• When Prompted for Service, the “Service

Phone” number will be displayed.

Service Cycles

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value (range =99000).

When nished, press the button to continue to the next parameter.

N.B. : To reset this parameter once “Service Phone” number is displayed. Turn off machine with on/off

switch behind machine.

Press and hold and buttons. Turn on machine holding the two buttons until “Service Reset”

appears on display.

Language

ENGLISH

Service Cycles

STAND-BY 09:30

Display Operating Procedure

Description

Temperature

°F

“Machine OFF” Programming

• This parameter is set at the factory at the

request of the local distributor.

• This parameter has two options Celsius

(°C) or Fahrenheit (°F).

Temperature Measurement Units

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value to either Celsius (°C) or Fahrenheit (°F).

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Temperature

°F

STAND-BY 09:30

Display Operating Procedure

Description

C kP kI kD

8.0 0.15 10.0

• This parameter is preset at the factory

based upon theoretical calculations and

physical experiments.

• It is not recommended that these

numbers are changed.

• Changes to these parameters can cause

unexpected results.

• Qualied technicians may wish to

experiment with different values.

• If you do wish to change the values

and nd that unexpected results occur,

return to the factory default values:

kP kI kD

8.0 0.15 10.0

Proportional, Integral,

Derivitive (PID) Settings (Coffee

Boiler)

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the asing parameter.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

C kP kI kD

8.0 0.15 10.0

STAND-BY 09:30

Display Operating Procedure

Description

PID setting

20.1 °F

“Machine OFF” Programming

• This parameter sets a range in which the

PID algorithm is active.

• This parameter is preset at the factory

based upon theoretical calculations and

physical experiments.

• It is not recommended that this number

is changed. Changes to this parameter

can cause unexpected results.

• It is important to write down the number

before any changes are made to make

sure you can return to the factory

programming if unexpected results

occur.

• Experienced technicians may wish to

experiment with different values.

• The lowest value for this parameter is

3.6°F / 2.0°C

PID Setting

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the parameter.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

PID setting

20.1 °F

STAND-BY 09:30

Display Operating Procedure

Description

Coffee T. Offset

1.5 °F

• This parameter isused to calibrate

the coffee boiler temperature system

to ensure the display temperature

accurately represents the temperature of

the water exiting the group head.

• This parameter is preset at the factory

based upon initial tests of this espresso

machine.

• It is not recommended that this number

is changed. Changes to this parameter

can cause unexpected results.

• It is important to write down this value

before making changes to be sure you

can return to the factory programming if

unexpected results occur. Each machine

may have a different value as it is set

individually.

“Machine OFF” Programming

Coffee Boiler Temperature

Offset

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the asing parameter.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Coffee T. Offset

1.5 °F

STAND-BY 09:30

Display Operating Procedure

Description

Water filter

• This parameter allows the technician

to preprogram an alarm that noties

the user when the water lter requires

service or replacement.

• When the programmed volume of

water has passed through the espresso

machine the error message “Change

Filter” is displayed.

• A value of 0 (zero) disables the lter

alarm parameter.

“Machine OFF” Programming

Water Filter Alarm

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the asing parameter.

When nished, press the button to continue to the next parameter.

When the espresso machine has dispensed the value of this parameter the message FILTER ALARM will

appear.

NOTE: To reset this message turn off the espresso machine using the main power switch.

Then, press and hold the button and the button and turn on the machine using the main power

switch.

Hold both buttons until the following message appears. Release both buttons and continue to use the

espresso machine as normal.

Language

ENGLISH

Water filter

STAND-BY 09:30

Filter

Alarm

Filter

Reset

Display Operating Procedure

Description

OPEN VALVE

DISABLED/ENABLED

• This parameter allows the service staff

to enable/disable the opening of the hot

water valve.

• This parameter allows steam boiler

depressurization.

• This parameter is not available on MP

paddle version.

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between DISABLED or ENABLED.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

OPEN VALVE

DISABLED/ENABLED

STAND-BY 09:30

Open Valve

Display Operating Procedure

Description

Drains SteamBoil

DISABLED/ENABLED

• This parameter enables the technician

to enable/disable the steam boiler

draining.

• This parameter allows the service staff

to renew or “regenerate” the water

contained inside the steam boiler,

discharging about one half of the water

contained in the boiler.

• This procedure is recommended in case

the machine should remain inactive for

more than 8 hours and in any case at

least on a weekly basis.

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between DISABLED or ENABLED.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

Drains SteamBoil

DISABLED/ENABLED

STAND-BY 09:30

Drain Steam Boiler

Display Operating Procedure

Description

TEST SAFETY VALV

DISABLED/ENABLED

• This parameter allows the service staff

to enable/disable the safety valve test.

• This parameter allows to bring the

steam boiler temperature to 140°C, thus

triggering the safety valve. Once the

valve has triggered disable the function.

• Should the safety valve fail to trigger

within approximately one minute of the

temperature reaching 140°C, disable

the function and replace the valve.

• Only qualied technicians can perform

this operation.

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between DISABLED or ENABLED.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

TEST SAFETY VALV

DISABLED/ENABLED

STAND-BY 09:30

Safety Valve

Display Operating Procedure

Description

First installat.

DISABLED/ENABLED

• This parameter allows the operator to

reactivate the rst installation message

to the next power of the machine.

NOTE: Ensure all air is removed from the

group prior to staring the espresso

machine.

“Machine OFF” Programming

Enter into “Machine Off” programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between DISABLED or ENABLED.

When nished, press the button to continue to the next parameter.

Language

ENGLISH

First installat.

DISABLED/ENABLED

STAND-BY 09:30

First Installation

Display Operating Procedure

Description

Doses setting

Select within 30s

• This parameter allows the operator to

program the water volume (shot volume)

for the individual buttons on the keypad.

• The saved program is a number. This

number relates to the number of pulses

the owmeter delivers to the CPU. Once

the programmed number of pulses is

received by the CPU, the ow of water

is stopped.

• This parameter is not available on MP

Paddle model as volume is manually

controlled by use of paddle, except for

the last button that controls the dose of

hot water brewed.

“Machine ON” Programming

Water Volume Programming

Enter into “Machine On” programming mode.

Press one of the following buttons:

Water will begin to ow. When the desired amount of water has been dispensed, press the same button

again to Stop the ow of water. The button is now programmed. Repeat this process for subsequent

buttons.

Doses setting

Select within30s

200.5°F 06:30

La Marzocco T:00

Display Operating Procedure

Description

Clock Adjust.

09:30 Wed 12h

• This parameter allows the user to set the

time of day and the day of the week.

• This parameter is used to display time

and is also used by the “Auto On/Off”

parameter

• There are 4 changeable values within

this parameter:

• Hour

• Minute

• Day of week

• Hour Format 12h or 24h

“Machine ON” Programming

Clock Adjust

Enter into “Machine On” programming mode.

Press and hold the button to enter into programming mode.

Then press the button to access the adjustable parameters.

Press the button or the button to change the value of the ashing parameter.

Press the button to advance to the next value.

When nished, press the button to continue to the next parameter.

Doses Setting

Select within30s

Clock Adjust.

200.5

F 06:30

La Marzocco T:00

Clock Adjust.

09:30 thurs 12h

Display Operating Procedure

Description

Week Auto On/Off

ENABLED

• This parameter enables the user to

enable/disable the Auto ON/OFF.

“Machine ON” Programming

Auto ON/OFF

Enter into “Machine On” programming mode.

Press and hold the button to enter into programming mode

Then press the button to access the adjustable parameters.

Press the button or the button to change the value of the ashing parameter.

Press the button or the button to change the value between DISABLED or ENABLED.

Doses Setting

Select within30s

200.5°F 06:30

La Marzocco T:00

Clock Adjust

09:30 thurs 12h

Week Auto On/Off

ENABLED

Display Operating Procedure

Description

Temp Cof. Boiler

94.6 °C

• This parameter is set at the factory at a

preset nominal temperature.

• The temperature of the boiler is

measured at the most critical point in

the boiler where temperature uctuation

is the greatest.

• The temperature of the water exiting the

group head is held constant by means

of the mass of the group casting. Even

though the temperature of the boiler

may vary slightly, the temperature of the

water exiting the group is constant.

• To properly calibrate the temperature

of any espresso machine it is import to

measure the temperature of the water

exiting the group by means of an external

temperature measuring device. The

difference of the display temperature

and the measured temperature may be

compansated by use of the “Coffee T.

Offset” parameter.

“Machine ON” Programming

Coffee Boiler Temperature

THE STEAM BOILER CONTAINS WATER AT ELEVATED TEMPERATURES. WATER TEMPERATURE

OVER 125 °F CAN CAUSE SEVERE BURNS INSTANTLY OR DEATH FROM SCALDING.

DANGER

Enter into “Machine On” programming mode.

Press and hold the button to enter into programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the parameter.

When nished, press the button to continue to the next parameter.

Doses Setting

Select within30s

200.5

F 06:30

La Marzocco T:00

Temp Cof. Boiler

94.6

NOTE: It is also possible to change the tempera-

ture of the coffee boiler using the “Quick Keys”.

Please see the section entitled “Quick Keys”

Display Operating Procedure

Description

Steam Boiler

Temp 134.0 °C

“Machine ON” Programming

• This parameter is set at the factory at a

preset nominal temperature.

• The temperature of saturated water is

proportional to the pressure inside the

Steam Boiler. Therefore it is possible to

regulate the pressure of the steam boiler

by means of electronic temperature

control. Please use the following tables

as reference when setting the steam

boiler temperature.

• The maximum permitted value for the

temperature setting is 134°C.

Steam Boiler Temperature

Temperature Pressure

247°F/119°C 1.0 bar

260°F/127°C 1.5 bar

272°F/133°C 2.0 bar

The saturation temperature of water will vary

with ambient atmospheric pressure.

Tables in this manual are created for atmospheric

pressure at sea level. Slight adjustment in temperature

will be required for elevations other than sea level.

CAUTION

THE STEAM BOILER CONTAINS WATER AT ELEVATED TEMPERATURES. WATER TEMPERATURE

OVER 125 °F CAN CAUSE SEVERE BURNS INSTANTLY OR DEATH FROM SCALDING.

DANGER

Enter into “Machine On” programming mode.

Press the button to enter into programming mode

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change tthe value of the ashing parameter.

When nished, press the button to continue to the next parameter.

NOTE: It is also possible to change the temperature of the steam boiler using the “Quick Keys”. Please see

the section entitled “Quick Keys”

Doses Setting

Select within30s

200.5°F 06:30

La Marzocco T:00

Steam Boiler

Temp 134.0

Display Operating Procedure

Description

PreBrewing

DISABLED

“Machine ON” Programming

• This parameter allows the user to enable

or disable the pre-brewing (also called

pre-infusion) function.

• When enabled the user is able to

program buttons 1-4. Each button may

have different programming.

• Pre-brewing has two values to adjust for

each button. “ON” time is the amount

of time (in seconds) that the brew valve

is open during during the prebrewing

cycle. “OFF” is the amount of time

(in seconds) that the brew valve is off

during the prebrewing cycle. After

the pre-brewing cycle has completed,

the normal brew cycle continues until

complete.

• This parameter is not available on MP

paddle versione where pre-infusion is

controlled manually by the paddle.

Pre-Infusion or Pre-Brewing

Enter into “Machine On” programming mode.

Press the button to enter into programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value of the parameter.

When enabled, additional parameters are displayed, press the button or the button to change the

value.

When nished press the button to continue to the next parameter. Repeat steps 6-7 for all 4 buttons.

A value of zero disables this feature on the corresponding button.

NOTE: It is also possible to enable and disable this parameter using the “Quick Keys”. Please see the section

titled “Quick Keys”

Doses Setting

Select within30s

200.5

F 06:30

La Marzocco T:00

PreBrewing

ENABLED

PreBrew ON sec

Espresso 0.6

PreBrew OFF sec

Espresso 0.1

Display Operating Procedure

Description

Service Phone

(555)123-4567

“Machine ON” Programming

• This parameter is a feature that can be

used to store the telephone number for a

service company.

• This telephone number will be displayed

when service is required.

Service Phone

Enter into “Machine On” programming mode.

Press the button to enter into programming mode

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change tthe value of the ashing parameter.

Press the button to advance to the next character. Repeat step 5-6 to program remaining characters

When nished, press the button to continue to the next parameter.

Doses Setting

Select within30s

200.5°F 06:30

La Marzocco T:00

Service Phone

Display Operating Procedure

Description

Crono Function

DISABLED

“Machine ON” Programming

• When enabled, this parameter displays a

timer that times each shot.

• The timer is reset each time a button on

the keypad is pressed.

• When enabled, the Crono Function is

continuously displayed.

The programmable name will not

be displayed when this parameter is

enabled.

Crono Function

Enter into “Machine On” programming mode.

Press the button to enter into programming mode.

Scroll through the displayed parameters using the button until the following display appears:

Press the button or the button to change the value between DISABLED or ENABLED.

When nished press the button to continue to the next parameter.

Doses Setting

Select within30s

200.5

F 06:30

La Marzocco T:00

Crono Function

DISABLED

La Marzocco GS3 Espresso Machine

Product's Documents

Manual

Specifications

La Marzocco GS3 Questions and Answers