Jura J8 User manual

J twin (EA/SA/INTA)
Instructions for Use
Additional online content
Tap, click or scan the QR code to access
additional online resources.
There are video tutorials to help you
operate your J8 twine.
jura.com/support-J8twin


Table of contents
Contents
 Control elements....................................................................................................................................................................................
 For your safety ...................................................................................................................................................................................... 
Comply with the instructions for use............................................................................................................................................................................ 4
Proper use .......................................................................................................................................................................................................................... 4
User limitations................................................................................................................................................................................................................. 4
Use by children.................................................................................................................................................................................................................. 4
What to do in the event of damage.............................................................................................................................................................................. 4
Preventing damage.......................................................................................................................................................................................................... 5
Danger of electric shock .................................................................................................................................................................................................. 5
Danger of burns, scalding and injury............................................................................................................................................................................ 5
 Preparing and using for the first time ................................................................................................................................................. 
Setting up the machine...................................................................................................................................................................................................6
Filling the bean container................................................................................................................................................................................................ 6
Determining the water hardness................................................................................................................................................................................... 6
First-time use.....................................................................................................................................................................................................................6
Managing your J8 twin – the JURA Cockpit ................................................................................................................................................................8
Connecting milk................................................................................................................................................................................................................ 8
Establishing a WiFi connection ......................................................................................................................................................................................9
 Preparation ........................................................................................................................................................................................... 
Preparation with preselection (Aroma Selection and Speciality Selection) ........................................................................................................... 9
Espresso and coffee.........................................................................................................................................................................................................10
Sweet latte (prepared with syrup attachment)...........................................................................................................................................................10
Latte macchiato, cappuccino and other speciality coffees with milk......................................................................................................................11
Americano and lungo ....................................................................................................................................................................................................12
Milk and milk foam..........................................................................................................................................................................................................12
Espresso doppio...............................................................................................................................................................................................................12
Ground coffee...................................................................................................................................................................................................................12
Hot water........................................................................................................................................................................................................................... 13
Adjusting the grinder...................................................................................................................................................................................................... 13
Adjusting the product settings......................................................................................................................................................................................13
 Daily operation .................................................................................................................................................................................... 
Switching the machine on and off................................................................................................................................................................................14
Filling the water tank.......................................................................................................................................................................................................14
Maintenance actions.......................................................................................................................................................................................................14
 Machine settings ................................................................................................................................................................................. 
 Maintenance ........................................................................................................................................................................................
Rinsing the machine........................................................................................................................................................................................................16
Automatic milk system rinsing .....................................................................................................................................................................................16
Cleaning the milk system...............................................................................................................................................................................................16
Dismantling and rinsing the professional fine foam frother ................................................................................................................................... 17
Inserting/changing the filter ..........................................................................................................................................................................................18
Cleaning the machine.....................................................................................................................................................................................................19
Descaling the machine .................................................................................................................................................................................................20
Descaling the water tank............................................................................................................................................................................................... 22
Cleaning the bean container.........................................................................................................................................................................................22
 Display messages.................................................................................................................................................................................
 Troubleshooting ..................................................................................................................................................................................
 Transport and environmentally friendly disposal ..............................................................................................................................
Transport/ Emptying the system ................................................................................................................................................................................ 23
Disposal ............................................................................................................................................................................................................................24
 Technical data..................................................................................................................................................................................... 
 Index ....................................................................................................................................................................................................
 JURA contact details/ Legal information........................................................................................................................................... 

 Control elements

 Control elements
qBean container with aroma preservation cover
wGrinder adjustment switch
eOn/Off button Q
rTouch display
tMilk system with professional fine foam frother (height-adjustable)
zCoffee spout (height-adjustable)
uHot-water spout
iCup grille with aperture
oInsert for drip tray
pDrip tray
aCoffee grounds container
sMains cable (permanently connected or plug-in)
dWater tank with cover
fPowder chute for ground coffee with cover (removable)
gService socket with JURA Wi-Fi Connect (under cover)
hFilter casing
jContainer for milk system cleaning
kSyrup attachment
lFiller funnel for ground coffee
yMeasuring spoon for ground coffee
12
13
1
3
4
7
8
11
9
10
5
6
2
15
14
    

 For your safety

 For your safety
Comply with the instructions for use
Before using the machine, read these instructions for use thoroughly and completely and comply with
the instructions they contain. Keep these instructions for use close to the machine and pass them on to
the next user.
Failure to observe the instructions for use may result in serious injuries or damage to property. Safety
information is therefore indicated as follows:
JWARNING Indicates circumstances that may result in serious injuries or death.
JCAUTION Indicates circumstances that may result in minor injuries.
CAUTION Indicates circumstances that may result in damage to property.
Proper use
The machine is intended for private domestic use. It should only be used for coffee preparation and to
heat milk and water. Use for any other purpose will be deemed improper.
User limitations
People, including children, who
Udo not have the physical, sensory or mental capabilities to use the machine safely or
Uare inexperienced or lack knowledge
must be supervised by a responsible person when using it, or must be instructed in how to use it cor-
rectly.
When using the CLARIS Smart+ filter cartridge or a JURA Wi-Fi Connect, wireless connections are estab-
lished. Specific details on the frequency band used and the maximum transmission power can be found
in the ‘11 Technical data’ section.
Use by children
Children must be able to recognise and understand the potential dangers arising from incorrect use:
UKeep children under the age of  away from the machine, or supervise them constantly.
UChildren aged  and over may only operate the machine without supervision if they have been
instructed in how to use it safely.
UChildren may not clean or service the machine unless supervised by a responsible person.
UDo not allow children to play with the machine.
What to do in the event of damage
Never use a damaged machine or mains cable. This could result in fatal electric shock.
UIn the event of signs of damage, disconnect the machine from the mains. To do this, first switch the
J8 twin off with the On/Off button Q. Only then should you remove the mains plug from the power
socket.
UReplace a damaged plug-in mains cable with an original JURA mains cable. Unsuitable mains cables
may result in consequential damage.
UOnly permit authorised JURA service centres to carry out repairs to the machine and the perman-
ently connected mains cable. Unsuitable repairs may result in consequential damage.

 For your safety

Preventing damage
To avoid damage to the machine and the mains cable:
UThe J8 twin must not be placed in a cabinet when in use.
UDo not use the J8 twin and the mains cable near hot surfaces.
UDo not allow the mains cable to rub against sharp edges and ensure that it does not become
trapped.
UNever allow the mains cable to loosely hang down. The mains cable could pose a tripping hazard or
become damaged.
UProtect the J8 twin from weather and direct sunlight.
UOnly connect the J8 twin to a mains voltage corresponding to that stated on the rating plate. The
rating plate is located on the underside.
UConnect the J8 twin directly to a domestic power socket. Using multi-socket adapters or extension
cords may cause overheating.
UThe surface of the heating element and outer enclosure remains hot after use and the outside of the
appliance may retain heat.
UDo not use alkaline or alcohol-based cleaning agents; only use mild cleaning agents and a soft cloth.
UDo not use any coffee beans treated with additives or caramelised coffee beans.
UOnly fill the water tank with fresh, cold, non-carbonated water.
USwitch the machine off with the On/Off button Qif you are going to be absent for a longer period of
time and remove the mains plug from the power socket.
UOnly use original JURA maintenance products. Use of products that are not explicitly recommended
by JURA could damage your J8 twin.
Danger of electric shock
Water conducts electricity. Do not bring water and electricity into contact with one another:
UNever touch the mains plug with wet hands.
UDo not immerse the J8 twin and/or mains cable in water.
UDo not put the J8 twin or any individual parts in the dishwasher.
UBefore cleaning, switch the J8 twin off with the On/Off button Q. Always wipe the J8 twin with a
damp cloth rather than a wet one, and protect it from prolonged exposure to water splash.
The J8 twin must not be cleaned with a jet of water.
UThe J8 twin is not suitable for installation on a surface where a jet of water can be used.
Danger of burns, scalding and injury
UDo not touch the spouts during operation. Use the handles provided.
UOptionally, your J8 twin can be remotely operated using mobile devices. When preparing a product
or initiating a maintenance programme, make sure that other people are not put at risk –
for example, through contact with the spouts.
UBe careful to ensure that the fine foam frother is correctly installed and clean, otherwise the fine
foam frother (or parts of it) may come loose.

 Preparing and using for the first time

 Preparing and using for the first time
Setting up the machine
TChoose a spot for your J8 twin which protects the machine against overheating. Ensure that the ventilation slots are not covered.
TPlace the J8 twin on a horizontal surface that is not sensitive to water.
Filling the bean container
The aroma preservation covers on the bean containers ensure that the aroma of the beans is retained for longer.
CAUTION
Coffee beans which have been treated with additives (e.g. sugar), ground coffee or freeze-dried coffee will damage the grinders.
T Only use roasted, untreated coffee beans to fill the bean container.
TRemove the aroma preservation cover.
TFill the bean container with coffee beans and close the aroma preservation cover.
Determining the water hardness
When you use the machine for the first time, you must set the water hardness. If you know the hardness of your water, go straight to the
next section. If you do not know the water hardness, you can find this out first:
THold the Aquadur®test strip supplied under running water for one second. Shake off the water.
TWait for about 1minute.
TYou will then be able to read the degree of water hardness from the discolouration of the Aquadur® test strip and the description on
the packaging.
First-time use
J WARNING
If the machine is operated with a defective mains cable, there is a danger of potentially fatal electric shock.
T Never use a machine which is damaged or has a defective mains cable.
CAUTION
Milk, sparkling mineral water or other liquids can damage the water tank or the machine.
T Only fill the water tank with fresh, cold water.
Precondition:The bean containers have been filled.
TFor machines with a plug-in mains cable: Connect the mains cable to the machine.
TInsert the mains plug into a power socket.
TPress the On/Off button Qto switch the J8 twin on.
‘Sprachauswahl’ / ‘Deutsch’
ETo display more languages, tap 9or 0until the desired language comes into focus (e.g. ‘English’).
TTouch ‘Save’.
appears briefly on the display.
‘Unit’ ‘ml’

 Preparing and using for the first time

ETo switch between ml and oz, tap 9or 0.
TTouch ‘Save’.
appears briefly on the display.
‘Water hardness’
EPlease refer to the section above for a description of how to determine the water hardness.
TTouch 9or 0to change the water hardness setting.
TTouch ‘Save’.
appears briefly on the display.
‘Insert filter’
TRemove the water tank and rinse it with cold water.
TOpen the filter casing.
TInsert the CLARIS Smart+ filter cartridge .
TClose the filter casing.
TInsert the filter casing into the water tank.
TTurn the filter casing clockwise until it audibly clicks into place.
TFill the water tank with fresh, cold water and reinsert the tank.
EThe machine automatically detects that you have just inserted the filter cartridge.
‘Filter operation’
‘Filter is being rinsed’, water flows directly into the drip tray.
‘System is filling’
‘Empty drip tray’
TEmpty the drip tray and put it back into the machine.
‘Filter operation’
‘Connections’ / ‘Wi-Fi connection’
q
w

 Preparing and using for the first time

TIf necessary, scan the QR code with your mobile device to download the JURA app (J.O.E.®).
EIf you would like to connect the J8 twin to your home network, tap ‘Connect’ and follow the instructions on the display. You can also
establish the connection later on (in the machine settings under ‘Connections’).
TTouch ‘Next’.
‘Connections’ / ‘Connect accessory’
EYou have the option of connecting the J8 twin to the JURA Cool Control milk cooler (wireless connection). To do this, tap ‘Connect’
and follow the instructions on the display.
TPlace one receptacle under the coffee spout and another under the fine foam frother.
TTouch ‘Next’.
‘Machine is rinsing’ / ‘Milk system is being rinsed’
The start screen is displayed. Your J8 twin is ready for use.
Managing your J twin – the JURA Cockpit
The JURA Cockpit allows you to manage your J8 twin. Tap at the top to open the JURA Cockpit.
Symbol Meaning
f ‘Machine settings’ area (green)
c ‘Maintenance’ area (blue)
$ Filter mode
#The ‘Coffee Eye’ function (for cup detection) is enabled
Run a self-diagnosis to check the maintenance status of your J8 twin
¦ (white) Your J8 twin is connected to the network and/or Cool Control via JURA Wi-Fi Connect
¦ (red) No connection to the Wi-Fi network
Connecting milk
Your J8 twin creates fine, creamy, feather-light milk foam with a perfect consistency. The most important requirement for frothing milk is
a milk temperature of 4–8°C. We would therefore recommend using a milk cooler or a milk container.
TRemove the protective cover from the fine foam frother.
TConnect the milk pipe to the fine foam frother.
EThe milk system of your J8 twin has a connector HP and an interchangeable milk spout CX.
TConnect the other end of the milk pipe to a milk container or a milk cooler.
jura.com/app

 Preparation

Establishing a WiFi connection
Your J8 twin can be connected with your JURA app (J.O.E.®).
Precondition:J.O.E.®is installed on your mobile device. The JURA Wi-Fi Connect is inserted into the service socket of your J8 twin.
TTap at the top to open the JURA Cockpit.
TTouch the ‘Machine setting’ fsymbol.
TTap ‘Connections’.
TTap ‘Connect’.
TAdd a new network in your JURA app (J.O.E.®) and follow the instructions.
 Preparation
Products shown on the start screen:
Start screen page 1
Espresso
Americano
Lungo
Hot water
Coffee
Latte macchiato
Cortado
Cappuccino
Café au lait
Start screen page 2
Macchiato
Flat white
Portion of milk foam
Espresso doppio
Sweet Latte
Portion of sweet milk foam
Flat white Extra Shot
2x coffee
Latte macchiato Extra Shot
Basic information about preparing drinks:
Aim What to do
Change bean container and the coffee strength of a single
product
See next section, ‘Preparation with preselection
(Aroma Selection)’
Change the amount for a single product During preparation, tap 9or 0
Display more products On the start screen, touch 9or 0
Stop preparation Touch ‘Cancel’
Permanently change the consistency of grind, coffee strength,
quantities and other settings for any given product
Tap and hold a product for around 2 seconds and configure the
settings
Repositioning or replacing a product Tap and hold a product for around 2 seconds and then tap
‘Replace’
EIf the screensaver is active, touch the display to return to the start screen.
ECoffee tastes best served hot. A cold porcelain cup cools the beverage – and impairs the taste. We therefore recommend prewarming
the cups. You can purchase a JURA cup warmer from your specialised dealer.
Preparation with preselection (Aroma Selection and Speciality Selection)
With the Aroma Selection function ~on your J8 twin, you can change the coffee strength of any given product before preparing it. You
can also choose which bean container is used to prepare a coffee and select additional settings:
Speciality Selection Meaning
e– Double product
(espresso, coffee)
The product is prepared with two brewing operations (two strokes).
‘S’– ‘Sweet milk foam’
(all speciality coffees with milk)
Use the syrup attachment provided to prepare the product with sweet milk foam.
s– ‘Extra Shot’
(all speciality coffees with milk except
macchiato and cortado)
The product is prepared with two brewing operations, with half the amount of water –
for a speciality coffee with a particularly intense taste.
£– Ground coffee
(all speciality coffees except for espresso
doppio)
The product is prepared with ground coffee.
ENot all settings are available for all products.

 Preparation

Example:Cappuccino with higher coffee strength
TPlace a cup under the fine foam frother.
TTap the ‘Aroma Selection’ symbol ~(bottom centre).
TTap ‘Cappuccino’ (within 10 seconds).
TTap the setting control for the appropriate grinder (circle) to increase the coffee strength.
EYou can also select which grinder should be used (100% / 50% / 0%).
TTouch ‘Next’.
‘Easy Mode’ appears. In this mode, you can configure additional settings.
TTap the picture of the cappuccino (or ‘Start’).
Preparation starts. The cappuccino is prepared according to your chosen settings.
Espresso and coffee
Example:Coffee
TPlace a cup under the coffee spout.
TTap ‘Coffee’.
The preset amount of water for coffee flows into the cup.
Sweet latte (prepared with syrup attachment)
The Sweet Latte is a speciality coffee with sweet milk foam. To make this speciality, use the syrup attachment provided.
EAll specialities with milk can also be prepared with sweet milk foam. To do this, use the syrup attachment provided and before
starting preparation, select the Speciality Selection ‘S’.
Precondition:Milk is connected to the fine foam frother.
TRemove the cover from the syrup attachment.
TFill the syrup attachment with syrup. Fill it to the first, second or third mark depending on the desired sweetness.
TClose the syrup attachment.
TTap ‘Sweet Latte’.
‘Please remove the fine foam frother and connect the syrup attachment.’

 Preparation

TRemove the lower part of the fine foam frother.
TConnect the syrup attachment to the fine foam frother.
TTurn the setting wheel of the fine foam frother to the ‘Milk Foam’ position.
TPlace a cup under the fine foam frother.
TTouch ‘Next’.
The preset amounts of coffee and milk foam flow into the cup.
‘Please remove the syrup attachment for cleaning and connect the fine foam frother.’
TRemove the syrup attachment and rinse it thoroughly under running water.
EThe syrup attachment, including the cover, is dishwasher-safe.
TRe-attach the lower part of the fine foam frother.
TTouch ‘Next’.
E minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the fine foam frother
after preparing milk.
To ensure that the fine foam frother always works properly, you must clean it daily when you have been preparing milk (see chapter 7 ‘Main-
tenance – Cleaning the milk system’).
Latte macchiato, cappuccino and other speciality coffees with milk
Your J8 twin prepares the following speciality coffees with milk at the touch of a button:
UCortado
UCappuccino
UCafé au lait
UMacchiato
UFlat white
ULatte macchiato
Example:Latte macchiato
Precondition:Milk is connected to the fine foam frother.
TPlace a glass under the fine foam frother.
TTap ‘Latte macchiato’.
The preset amounts of milk and milk foam flow into the glass.
EThere is a short interval while the hot milk separates from the milk foam. This allows the typical layers of a latte macchiato to form.
The preset amount of water for espresso flows into the glass.

 Preparation

E minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the fine foam frother
after preparing milk.
To ensure that the fine foam frother always works properly, you must clean it daily when you have been preparing milk (see chapter 7
‘Maintenance – Cleaning the milk system’).
Americano and lungo
For the americano and lungo, the J8 twin blends the coffee with hot water using a special preparation method. This results in a full-bodied
speciality coffee which is particularly easy to digest. You can change the amount of this additional water (see chapter 4 ‘Preparation – Adjust-
ing the product settings’).
Milk and milk foam
Your J8 twin prepares hot milk and milk foam. To do this, turn the setting wheel of the fine foam frother to the ‘Milk Foam’ or ‘Milk’ posi-
tion.
E minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the fine foam frother
after preparing milk.
Espresso doppio
‘Doppio’ is Italian for ‘double’. When you select Espresso doppio, two espressi are prepared one after the other. The result is an extra full-bod-
ied and aromatic speciality coffee.
Ground coffee
You can choose to use a second coffee variety, for example decaffeinated coffee, with the filter funnel for ground coffee.
UNever add more than two level measuring spoons of ground coffee.
UUse ground coffee which is not ground too finely. Very fine coffee can block up the system so that the coffee only comes out in drips.
UIf you did not fill the machine with a sufficient amount of ground coffee, ‘Not enough ground coffee’ is displayed and the J8 twin
stops the operation.
UThe desired speciality coffee must be prepared within approximately one minute after filling with the ground coffee. Otherwise the
J8 twin stops the operation and is once more ready for use.
Example:Proceed as follows to prepare an espresso using ground coffee.
TPlace an espresso cup under the coffee spout.
TTap the ‘Aroma Selection’ symbol ~(bottom centre).
TTap ‘Espresso’.
TTouch £.
TTouch ‘Next’.
TTouch ‘Start’..
‘Please add ground coffee’
TOpen the powder chute cover.
TPlace the filler funnel for ground coffee on the powder chute.
TAdd the desired amount of ground coffee to the filler funnel (max. 2 level measuring spoons).
EThe amount of ground coffee determines the intensity and aroma of the beverage, so you can adjust it to your personal preferences.

 Preparation

TRemove the filler funnel.
TClose the cover.
TTouch ‘Next’.
The preset amount of water for espresso flows into the cup.
EThe powder chute and cover can be removed and also cleaned, if necessary.
Hot water
The J8 twin allows you to prepare different variants of hot water:
U‘Hot water’
U‘Hot water for green tea’ (Product must be added to the start screen. To do this, tap and hold any product for 2 seconds, then use the
‘Replace product’ function to select hot water for green tea.)
J CAUTION
There is a danger of scalding from hot water splashes.
T Avoid direct contact with the skin.
Example:Hot water
TPlace a cup under the hot-water spout.
TTap ‘Hot water’.
The preset amount of water flows into the cup.
Adjusting the grinder
The grinder adjustment switches are used to adjust both grinders according to your preference for a mild or intense aroma.
Adjusting the product settings
Touch a product for approximately  seconds to access the settings:
USave permanent settings for preferred coffee strength and quantity, change the product name or preselect options such as ‘Sweet
milk foam’, ‘Extra Shot’ or ‘Ground coffee’.
UThe ‘Replace’ symbol allows you to choose between ‘Replace product’ and ‘Reposition the product’.
EDepending on the selected product, there will be different settings available which are represented by symbols on your display.
The settings always follow the same model.
Tap, click or scan to watch
the video tutorial on YouTube

 Daily operation

Example:Proceed as follows to change the quantity for one coffee.
TTouch ‘Coffee’ for approximately  seconds.
TTap the symbol for fill volume §.
TTap 9or 0to change the setting.
TTap and confirm the setting by selecting ‘Yes’.
 Daily operation
Switching the machine on and off
TPlace one receptacle under the coffee spout and another under the fine foam frother.
TPress the On/Off button Q.
‘Machine is rinsing’
Your J8 twin is switched on or off.
EWhen the machine is switched off, the system is only rinsed if a speciality coffee has been prepared.
EIf milk has been prepared before switching off, you will be prompted to carry out milk system cleaning (‘Clean the milk system’).
After 30 seconds the switch-off process continues automatically.
Filling the water tank
Daily maintenance of the machine and hygiene when handling milk, coffee and water are key to a perfect coffee result in the cup every
time. You should therefore change the water daily.
CAUTION
Milk, sparkling mineral water or other liquids can damage the water tank or the machine.
T Only fill the water tank with fresh, cold water.
TRemove the water tank and rinse it with cold water.
TFill the water tank with fresh, cold water and reinsert the tank.
Maintenance actions
Optimal coffee quality depends on many factors. One important prerequisite is regular maintenance of your J8 twin. Carry out the follow-
ing steps:
Maintenance action Daily If necessary Note
Empty the drip tray and coffee grounds
container and rinse with warm water
(The insert for the drip tray, including the drip
tray itself, and the coffee grounds container
are dishwasher-safe)
ZAlways empty the coffee grounds container when the
machine is switched on. This is the only way of
resetting the coffee grounds counter.
Tap, click or scan to watch
the video tutorial on YouTube

 Machine settings

Maintenance action Daily If necessary Note
Clean the milk system (if heavily soiled, also
dismantle and rinse it)
ZSee chapter 7 ‘Maintenance – Cleaning the milk
system’.
We recommend that you dismantle and rinse the
professional fine foam frother once a week (see
chapter 7 ‘Maintenance – Dismantling and rinsing the
professional fine foam frother’)
Rinse the milk pipe Z
Rinse the water tank Z
Wipe the surface of the machine with a clean,
soft, damp cloth (e.g. microfibre cloth)
Z
Remove and clean the powder chute for
ground coffee
Z
Changing milk pipe with connector HP3 approx. every
3 months
Change the interchangeable milk spout CX3 approx. every
3 months
Clean the inside of the water tank with a
brush
Z
Clean the top and bottom of the cup grille Z
Thoroughly clean the drip tray and coffee
grounds container
ZIn the ‘Maintenance’ area cof the Cockpit, the
message ‘Maintenance information’ appears.
EPerform a self-diagnosis on a regular basis to check the maintenance status of your J8 twin. To do this, touch in the Cockpit.
EYou will find more information about the maintenance of your J8 twin in the ‘Maintenance’ area cin the programme item ‘Mainten-
ance information’.
 Machine settings
Tap on the start screen to open the Cockpit. In the ‘Machine settings’ section fthe following settings can be configured:
Programme item Sub-item Explanation
Page öää
‘Choose language’ Set language
‘Water hardness’ Set the hardness of the water used (1°dH to 30°dH) to prevent limescale
building up in your machine
‘Connections’(only
displayed if JURA Wi-Fi
Connect is being used)
‘Wi-Fi connection’ Wirelessly connect the J8 twin to the JURA app (J.O.E.®) or disconnect again
‘Connect accessory’ Establish a wireless connection between your J8 twin and the Cool Control milk
cooler or disconnect it again
Page äöä
‘Display’ ‘Set profile’ Create (0–4) profiles in the Cockpit and personalise 3 favourite speciality coffees
for each
‘Product name’ Display product images with/without product names on the start screen
‘Grinder name’ Change the names of the grinders, e.g. to specify the beans that are used in
each
‘Brightness’ Change display brightness (in 10% increments)
‘Counter’ ‘Product counter’ View product counter
‘Maintenance counter’ View the maintenance counter
Tap, click or scan to watch
the video tutorial on YouTube

 Maintenance

Programme item Sub-item Explanation
‘General’ ‘Information’ View software version
‘Empty system’ Empty the system to protect the J8 twin from frost damage during transport
‘Factory setting’ Reset your J8 twin to factory settings (the machine then switches off)
Page ääö
‘Timer’ ‘Switch off after’ Set the automatic switch-off time to save energy (switch-off after 15minutes,
30minutes or 1 – 9 hours after the last action on the machine)
‘Operating instructions’ ‘Coffee Eye’ Activate/deactivate operating instructions for ‘Coffee Eye’ automatic cup
recognition
‘Aroma control’ Show recommended settings for consistency of grind (enabled/disabled)
‘Sweet Foam function’ Show instructions for using the syrup attachment and fine foam frother
‘Milk / Milk foam’ Show instructions for using the fine foam frother and switching between milk
and milk foam
‘Unit’ Set the unit for the amount of water (ml or oz)
 Maintenance
Basic information about maintenance:
UYou can manage the maintenance of your J8 twin in the ‘Maintenance’ carea of the Cockpit.
UIf a maintenance programme needs to be initiated, the area on the start screen appears with a red background. Tap to open
the JURA Cockpit. Here, maintenance programmes that need to be carried out are shown in the form of messages with red back-
grounds. Touch a message to go straight to the corresponding maintenance programme.
UCarry out each maintenance programme when you are prompted to do so.
Rinsing the machine
You can start coffee system rinsing manually at any time.
Precondition:The start screen is displayed.
TPlace one receptacle under the coffee spout and another under the fine foam frother.
TTap at the top to open the JURA Cockpit.
TTouch the ‘Maintenance’ symbol c.
TTouch ‘Rinse’ to start the rinse operation.
‘Milk system is being rinsed’
‘Machine is rinsing’
The rinse stops automatically.
Automatic milk system rinsing
 minutes after milk preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the professional fine
foam frother after preparing milk.
Cleaning the milk system
Tap, click or scan to watch
the video tutorial on YouTube

 Maintenance

To ensure that the milk system always works properly, you must clean it daily when you have been preparing milk.
CAUTION
If the wrong cleaning agent is used, the machine could be damaged and/or traces could be left behind in the water.
T Use only original JURA maintenance products.
EJURA milk system cleaner is available from specialised dealers.
EUse the container supplied for milk system cleaning.
Precondition:‘Clean the milk system’ is displayed in the Cockpit.
TTap at the top to open the JURA Cockpit.
TTap ‘Clean the milk system’.
TTouch ‘Next’.
‘Cleaning agent for milk system’ / ‘Connect the milk tube ’ / ‘Milk Foam position’ / ‘Attach the spout to the container’
TRemove the milk pipe from the milk container or milk cooler.
TPour one dosing unit of milk system cleaner into the container for milk system cleaning.
TPlace the container under the coffee spout and the fine foam frother.
TPush the fine foam frother down as far as it will go to connect it firmly to the container.
TConnect the milk pipe to the container.
ETo connect the milk pipe to the container correctly, the pipe must be fitted with a connector HP3.
TTurn the setting wheel of the fine foam frother to the ‘Milk Foam’ position.
TTouch ‘Start’.
The fine foam frother and the milk pipe are cleaned.
The operation stops automatically.
Dismantling and rinsing the professional fine foam frother
If insufficient foam is produced when the milk is frothed or milk sprays out of the professional fine foam frother, the frother may be dirty.
If this happens, dismantle and rinse the professional fine foam frother.
EWe recommend that you dismantle and rinse the professional fine foam frother once a week

 Maintenance

TRemove the milk pipe and rinse it thoroughly under running water.
TRemove the professional fine foam frother.
TDismantle the fine foam frother into its individual parts.
TRinse all the parts under running water. If there are severely dried-on milk residues, firstly immerse the individual parts in a solution of
250ml water and one dosing unit of JURA milk system cleaner. Then rinse the individual parts thoroughly.
TRe-assemble the professional fine foam frother.
EEnsure that all individual parts are correctly and firmly connected to ensure optimum operation of the professional fine foam frother.
TRe-fit the professional fine foam frother on the milk system.
Inserting/changing the filter
Once the filter cartridge stops working (depending on the water hardness setting), the J8 twin will prompt you to change the filter.
EYour J8 twin no longer has to be descaled if you are using the CLARIS Smart+ filter cartridge.
ECLARIS Smart+ filter cartridges are available from specialised dealers.
Precondition:The start screen is displayed. (Alternatively, ‘Change the filter’ is displayed in the Cockpit if the filter’s capacity has been
exhausted.)
TRemove and empty the water tank.
TTurn the filter casing anti-clockwise and remove it from the water tank.
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2
Tap, click or scan to watch
the video tutorial on YouTube

 Maintenance

TOpen the filter casing.
TRemove the old CLARIS Smart+ filter cartridge .
TInsert a new CLARIS Smart+ filter cartridge .
TClose the filter casing.
TInsert the filter casing into the water tank.
TTurn the filter casing clockwise until it audibly clicks into place.
TFill the water tank with fresh, cold water and reinsert the tank.
The machine automatically detects that you have just inserted/changed the filter cartridge.
‘Filter is being rinsed’, water flows directly into the drip tray.
‘Empty drip tray’
TEmpty the drip tray and coffee grounds container and put them back into the machine.
The start screen is displayed.
Cleaning the machine
After 180preparations or 80switch-on rinses, the J8 twin will prompt you to clean it.
CAUTION
If the wrong cleaning agent is used, the machine could be damaged and/or traces could be left behind in the water.
T Use only original JURA maintenance products.
EThe cleaning programme lasts approximately 20 minutes.
EJURA cleaning tablets are available from specialised dealers.
Precondition:‘Clean’ is displayed in the Cockpit.
TFill the water tank.
TTap at the top to open the JURA Cockpit.
TTap ‘Clean’.
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w
Tap, click or scan to watch
the video tutorial on YouTube

 Maintenance

TTouch ‘Start’.
‘Empty coffee grounds container’ / ‘Empty drip tray’
TEmpty the drip tray and coffee grounds container and put them back into the machine.
TPlace one receptacle under the coffee spout and another under the fine foam frother.
TTouch ‘Next’.
‘Machine is being cleaned’
The operation is interrupted, ‘Add cleaning tablet’.
TOpen the powder chute cover.
TInsert a JURA cleaning tablet into the powder chute.
TClose the cover.
TTouch ‘Next’.
‘Machine is being cleaned’
‘Empty coffee grounds container’ / ‘Empty drip tray’
TEmpty the drip tray and coffee grounds container and put them back into the machine.
Descaling the machine
The J8 twin builds up deposits of limescale over time and automatically prompts you to descale it when necessary. The degree of calcific-
ation depends on the hardness of your water.
EIf you are using a CLARIS Smart+ filter cartridge, you will not be prompted to descale.
J CAUTION
If the descaling agent comes into contact with the skin or eyes, this can cause irritation.
T Avoid contact with the skin or eyes.
T Rinse off the descaling agent with clean water. Should you get any descaling agent in your eye, see a doctor.
CAUTION
If the wrong descaling agent is used, the machine could be damaged and/or traces could be left behind in the water.
T Use only original JURA maintenance products.
CAUTION
If the descaling operation is interrupted, there may be damage to the machine.
T Allow the descaling programme to run to the end.
Tap, click or scan to watch
the video tutorial on YouTube