La Marzocco GS3 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

La Marzocco S.r.l.

Via La Torre 14/H Località La Torre 50038 Scarperia e San Piero (Firenze) - ITALIA

www.lamarzocco.com info@lamarzocco.com

T: +39 055 849 191 F: +39 055 849 1990

Operating Manual V1.3 - 09/2016

MAN.2.1.01

certications available:

Chapters

1. General Information

2. Accessories

3. Machina Description

4. Installation

5. Operation

6. Key Features

7. Preventative Maintenance and Cleaning

8. Maintenance and Periodic Cleaning Operations

9. Installation Guide

10. Software Programming Guide

page 3

page 5

page 6

page 7

page 12

page 14

page 16

page 18

page 19

page 29

1. General Information

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.

About this Manual

1) This operating guide is an integral and

essential part of the product and 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.

Remove Machine from Packaging

1) Ensure product’s integrity by inspecting

the packaging, making sure it presents no signs of damage which might have affected the enclosed machine.

2) Check the machine’s integrity after having carefully removed the packaging. Packaging (boxes, plastic bags, foam parts and whatever else) must not be left within easy reach of children, due to the potential danger it represents, nor be discarded in the environment.

Safety Instructions

1) Check to see that data on the rating

plate corresponds to those of the main electrical supply to which the machine will be attached. This equipment must be installed to comply with applicable federal, state or local plumbing codes.

2) The installation must be performed according to local electrical and plumbing codes and regulations. The installation also must comply to the manufacturer’s instructions, and must be performed by

qualied and authorized personnel.

3) Incorrect installation may cause injury/ damages to people, animals or objects, for which the manufacturer shall not be held responsible.

4) 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.

5) Furthermore, you must ensure that the capacity of the available electrical system is suitable for the maximum power consumption indicated on the espresso machine.

6) 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.

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.

7) 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.

8) Using any electrical device requires that certain fundamental rules be observed. In particular:

- do not touch the device with wet or moist hands and feet

- do not use the device while not wearing shoes

- 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

- do not allow children or untrained people to use this device

9) Before performing any maintenance and/

or cleaning operations (other than back-

ushing the group), turn the main switch

to the “0” or OFF position, and disconnect the machine from the electrical network by unplugging the cord or by switching off the relative circuit breaker. For any cleaning operation, follow exclusively the instructions contained in this manual.

WARNING

HAZARDOUS VOLTAGE DISCONNECT FROM POWER

SUPPLY BEFORE SERVICING.

10) If the machine is operating in a faulty

manner or stops working, disconnect it from the electrical network (as described in the preceding point). Do not attempt

to repair it. Contact a qualied and authorized professional to perform any

repair. Any repair 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.

WARNING

THE MACHINE MUST BE INSTALLED SO THAT

QUALIFIED TECHNICAL PERSONNEL CAN EASILY

ACCESS IT FOR MAINTENANCE.

11) In order to avoid dangerous overheating

problems, it is recommended that the power supply cable be unfurled completely.

12) Do not obstruct air intake and exhaust grilles and, in particular, do not cover the cup warmer tray with cloths or other items.

Minimum room temperature: 5°C Maximum room temperature: 32°C

13) 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 electrical network by unpluging the power cord or switching off the relative circuit breaker and close off the water supply; to replace the power supply

cord, contact qualied professionals

exclusively.

WARNING

THIS APPLIANCE IS NOT INTENDED FOR USE BY

PERSONS (INCLUDING CHILDREN) WITH REDUCED

PHYSICAL, SENSORY OR MENTAL CAPABILITIES,

OR LACK OF EXPERIENCE AND KNOWLEDGE,

UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR

INSTRUCTION CONCERNING USE OF THE APPLIANCE

BY A PERSON RESPONSIBLE FOR THEIR SAFETY.

WARNING

IN ORDER TO PREVENT CRACKS OR LEAKAGE: DO NOT STORE OR INSTALL THE COFFEE MACHINE IN

PLACES WHERE TEMPERATURE MAY CAUSE BOILER OR

HYDRAULIC SYSTEM WATER FREEZING.

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

QTY. PART NO. DESCRIPTION

L111/2NAC

1 L111/1AC PORTAFILTER

1 L115/C PORTAFILTER BASKET,

1 F.3.029 PRECISION FILTER

1 F.3.028 PRECISION FILTER

1 F.3.027 PRECISION FILTER

1 F.3.026 PRECISION FILTER

1 F.3.030/

F.3.031

1 UT003 HEX KEY, 5mm

2 L120/2A WASHER, FLAT,

1 V067 ESPRESSO MACHINE

1 913 (CE)

914 (ETL)

PORTAFILTER ASSEMBLY, DOUBLE SPOUT, S/STEEL

ASSEMBLY, SINGLE SPOUT, S/STEEL

BLIND

BASKET 7gr (SINGLE)

BASKET 14gr (DOUBLE)

BASKET 17gr

BASKET 21gr

TAMPER (ACCORDING TO MARKET)

SEALING TYPE, M6 (12X6.25X0.75)

CLEANER

WATER SUPPLY AND DRAIN CONNECTION KIT

L115/C

L111/1AC

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

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

L111/2NAC

2. Accessories

UT003

V067

L120/2A

913 (CE) / 914 (ETL-USA)

L325 (CE) L326 (ETL-USA)

H.1.010.01

Figure 1 - Accessories

F.8.002

F.8.003

L312

L308

3. Machine Description

cup tray

main power switch

Figure 2 - Machine Description

group head (AV model)

pressure gauge

(coffee boiler)

steam wand

steam activation

lever

hot water dispensing

pressure gauge

(steam boiler)

spout

group cover

drain box

paddle group and handle

(MP model)

display

keypad

temperature adjustment

knob for hot water

4. Installation

THE MACHINE IS INTENDED TO BE PERMANENTLY

WARNING

CONNECTED TO MAINS POWER SUPPLY.

IT IS MANDATORY THAT A RESIDUAL CURRENT DEVICE

(RCD) WITH A RATED RESIDUAL OPERATING CURRENT NOT

EXCEEDING 30 mA IS INSTALLED.

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. 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

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 two units of a quick water test kit (see image below) including

6 test-strips and instruction cards. The parameters that you can measure are Total Hardness, Total Iron, Free Chlorine, Total Chlorine, pH & Total Alkalinity, Chlorides. Ideally, you should perform a test on the water BEFORE the water treatment system and again AFTER the water system in order to verify if this is actually matching

our suggested ranges. Once the test has been performed, learn which treatment system is most appropriate for your particular water supply

by lling out the online water calculator

on our website: LA MARZOCCO WATER

CALCULATOR (http://www.lamarzocco.

com/water_calculator/).

WARNING

THE COFFEE MACHINE MUST BE PLACED IN A

HORIZONTAL POSITION ON A COUNTER HIGHER THAN 80

CM FROM THE GROUND

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

Figure 3a - “Bleed the Group AV”

5 mm Hex Key

Bleed Screw

Figure 3b - “Bleed the Group MP”

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. 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.

Figure 4 - Key Pad buttons

Figure 5 - Key Pad buttons with lights on

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

Free Chlorine (Cl

Total Chlorine (Cl

pH value 6,5 8,5

Alkalinity ppm 40 80

Chloride (Cl

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

specied in the section “installation”)

/Fe+3) ppm 0 0,02

) ppm 0 0,05

) ppm 0 0,1

–

) ppm not more 50

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).

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.

Figure 6 - Expansion Valve Adjustment

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

5. Operation

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

Figure 8 – Portalter

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.

FILTER BASKET

SPRING

PORTAFILTER

O-RING GASKET

DOUBLE SNAP-ON SPOUT

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 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.

Figure 9 - 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).

WARNING

THE COFFEE BOILER AND STEAM BOILER CONTAIN

WATER AT ELEVATED TEMPERATU-RE. WATER

TEMPERATURE OVER 125°F/52°C CAN CAUSE SEVERE

BURNS INSTANTLY OR DEATH FROM SCALDING (COFFEE

BOILER 200°F/93.3°C-STEAM BOILER 260°F /127°C)

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.

6. Key Features

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:

913 (CE) / 914 (ETL-USA)

L325 (CE) L326 (ETL/USA)

H.1.010.01

F.8.002

F.8.003

L312

L308

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 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.

WARNING

IF THE ABOVE-MENTIONED INSTRUCTIONS ARE NOT

ADHERED TO THE MANUFACTURER CANNOT BE HELD

RESPONSIBLE FOR DAMAGE TO PERSONS OR THINGS.

7. Preventative Maintenance and Cleaning

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.

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.

CAUTION

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.

• 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.

CAUTION

THE MACHINE MUST NOT BE DIPPED IN, NOR SPLASHED

WITH, WATER IN ORDER TO CLEAN IT. FOR CLEANING

OPERATIONS, PLEASE FOLLOW THE INSTRUCTIONS

VERY CAREFULLY.

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).

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.

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.

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.

▪ 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

▪ Rebuild steam assemblies

▪ Replace portafilter baskets ▪ Inspect group valve plungers ▪ Inspect vacuum breaker ▪ Inspect steam boiler

pressurestat

▪ Inspect expansion valve

▪ 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

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

▪ Inspect electrical wiring

condition

▪ Inspect boilers safety switches ▪ Replace over-pressure valve

(safety valve)

▪ Accurate control of the

EVERY THREE/FOUR MONTHS

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

EVERY YEAR (in addition to the above)

tightness at 2,4Nm of each cable on the terminal block.

If MP Model:

▪ Disassembly and lubrication

of the components of the MP valve

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

EVERY 3 YEARS (in addition to the above)

appliances.

gs3

Installation Guide

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

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pag 23

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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+ 43 hidden pages