jura J8 twin Manual

Control elements

Figure: Your machine may look different than the one shown.

1. Bean container with aroma preservation cover
2. Grinder adjustment switch
3. On/Off button
4. Touchscreen display
5. Milk system with professional fine foam frother (height-adjustable)
6. Coffee spout (height-adjustable)
7. Hot-water spout
8. Cup platform with aperture
9. Insert for drip tray
10. Drip tray
11. Coffee grounds container
12. Power cord (permanently connected or plug-in)
13. Water tank with cover
14. Powder chute for ground coffee with cover (removable)
15. Service socket with JURA Wi-Fi Connect (under cover)
16. Filter casing
17. Container for milk system cleaning
18. Syrup attachment
19. Filler funnel for ground coffee
20. Measuring spoon for ground coffee

Preparing and using for the first time

Setting up the machine

• Choose a spot for your J8 twin which protects the machine against overheating. Ensure that the ventilation slots are not covered.
• Place 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.
NOTICE
Coffee beans which have been treated with additives (e.g. sugar), ground coffee or freeze-dried coffee will damage the grinders.

• Only use roasted, untreated coffee beans to fill the bean container.

• Remove the aroma preservation cover.
• Fill 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:

• Hold the Aquadur^® test strip supplied under running water for one second. Shake off the water.
• Wait for about 1 minute.
• You will then be able to read the degree of water hardness from the discoloration of the Aquadur^® test strip and the description on the packaging.
  

First-time use

If the machine is operated with a defective power cord, there is a danger of potentially fatal electric shock.

• Never use a machine which is damaged.
• Never use a machine which has a defective power cord.

NOTICE
Milk, sparkling mineral water or other liquids can damage the water tank or the machine.

• Only fill the water tank with fresh, cold water.

Precondition: The bean containers have been filled.

• For machines with a plug-in power cord: Connect the power cord to the machine.
• Insert the power plug into a power socket.
• Press the On/Off button Q to switch the J8 twin on.
  'Choose language'/'English'
  To display more languages, tap or until the desired language comes into focus (e.g. 'English').
• Touch 'Save'.
  appears briefly on the display.
  'Unit' 'ml'
  To switch between ml and oz, tap or .
• Touch 'Save'.
  appears briefly on the display.
  'Water hardness'
  Please refer to the section above for a description of how to determine the water hardness.
• Touch or to change the water hardness setting.
• Touch 'Save'.
  appears briefly on the display, 'Insert filter'.
• Remove the water tank and rinse it with cold water.
• Open the filter casing.
  
• Insert the CLEARYL Smart+ filter cartridge.
• Close the filter casing.
• Insert the filter casing into the water tank.
  
• Turn the filter casing clockwise until it audibly clicks into place.
  
• Fill the water tank with fresh, cold water and reinsert the tank.
  The 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'
• Empty the drip tray and put it back into the machine.
  
  'Filter operation'
  'Connections'/'Wi-Fi connection'
• If necessary, scan the QR code with your mobile device to download the JURA app (J.O.E.^®).

If 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').

• Touch 'Next'.
  'Connections'/'Connect accessory'
  You 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.
• Place one receptacle under the coffee spout and another under the professional fine foam frother.
  
• Touch 'Next'.
  'Machine is rinsing'/'Milk system is being rinsed'
  The start screen is displayed. Your J8 twin is ready for use.

Managing your J8 twin – the JURA Cockpit

The JURA Cockpit allows you to manage your J8 twin. Tap top to open the JURA Cockpit.

Symbol	Meaning
	'Machine settings' area (green)
	'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 39–46°F (4–8°C). We would therefore recommend using a milk cooler or a milk container.

• Remove the protective cover from the professional fine foam frother.
• Connect the milk pipe to the professional fine foam frother.
  
  The milk system of your J8 twin has a connector HP3 and an interchangeable milk spout CX3.
• Connect the other end of the milk pipe to a milk container or a milk cooler.

Establishing a Wi-Fi 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.

• Tap at the top to open the JURA Cockpit.
• Touch the 'Machine setting' symbol.
• Tap 'Connections'.
• Tap 'Connect'.
• Add a new network in your JURA app (J.O.E.^®) and follow the instructions.

Preparation

Hot coffee, hot steam and hot water can cause scalding. Scalding is a serious burn.

• Use extreme care when handling hot liquid or steam.
• Allow liquid to cool down before drinking.
• In the event of scalding, rinse affected area with cold water and seek medical attention.
• Keep children AWAY.

Products shown on the start screen:

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 and Specialty Selection)'
Change the amount for a single product	During preparation, tap or
Display more products	On the start screen, touch or
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'

If the screensaver is active, touch the display to return to the start screen.
Coffee 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 specialized dealer.

Preparation with preselection (Aroma Selection and Specialty 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:

Specialty Selection	Meaning
– Double product (espresso, coffee)	The product is prepared with two brewing operations (two strokes).
– 'Sweet milk foam' (all specialty coffees with milk)	Use the syrup attachment provided to prepare the product with sweet milk foam.
– 'Extra Shot' (all specialty coffees with milk except macchiato and cortado)	The product is prepared with two brewing operations, with half the amount of water – for a specialty coffee with a particularly intense taste.
– Ground coffee (all specialty coffees except for espresso doppio)	The product is prepared with ground coffee.

Not all settings are available for all products.
Example: Cappuccino with higher coffee strength
Precondition: Milk is connected to the professional fine foam frother.

• Place a cup under the professional fine foam frother.
  
• Tap the 'Aroma Selection' symbol (bottom center).
• Tap 'Cappuccino' (within 10 seconds).
• Tap the setting control for the appropriate grinder (circle) to increase the coffee strength.
  You can also select which grinder should be used (100%/50%/0%).
• Touch 'Next'.
  'Easy Mode' appears. In this mode, you can configure additional settings.
• Tap the picture of the cappuccino (or 'Start').
  Preparation starts. The cappuccino is prepared according to your chosen settings.

Espresso and coffee

Example: Coffee

• Place a cup under the coffee spout.
  
• Tap 'Coffee'.
  The preset amount of water for coffee flows into the cup.

Sweet Latte

(prepared with syrup attachment)
The Sweet Latte is a specialty coffee with sweet milk foam. To make this specialty, use the syrup attachment provided.

All specialties with milk can also be prepared with sweet milk foam. To do this, use the syrup attachment provided and before starting preparation, select the Specialty Selection .
Precondition: Milk is connected to the professional fine foam frother.

• Remove the cover from the syrup attachment.
  
• Fill the syrup attachment with syrup. Fill it to the first, second or third mark depending on the desired sweetness.
• Close the syrup attachment.
• Tap 'Sweet Latte'.
  'Please remove the fine foam frother and connect the syrup attachment.'
• Remove the lower part of the professional fine foam frother.
  
• Connect the syrup attachment to the professional fine foam frother.
  
• Turn the setting wheel of the professional fine foam frother to the 'Milk Foam' position.
• Place a cup under the professional fine foam frother.
• Touch '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.'
• Remove the syrup attachment and rinse it thoroughly under running water.
  The syrup attachment, including the cover, is dishwasher-safe.
• Re-attach the lower part of the professional fine foam frother.
• Touch 'Next'.
  8 minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the professional fine foam frother after preparing milk.
  To ensure that the professional fine foam frother always works properly, you must clean it daily when you have been preparing milk (see chapter 'Maintenance – Cleaning the milk system').

Latte macchiato, cappuccino and other specialty coffees with milk

Your J8 twin prepares the following specialty coffees with milk at the touch of a button:

• Cortado
• Cappuccino
• Café au lait
• Macchiato
• Flat White
• Latte macchiato

Example: Latte macchiato
Precondition: Milk is connected to the professional fine foam frother.

• Place a glass under the professional fine foam frother.
• Tap 'Latte macchiato'.
  The preset amounts of milk and milk foam flow into the glass.
  There 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.
  8 minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the professional professional fine foam frother after preparing milk.
  To ensure that the professional fine foam frother always works properly, you must clean it daily when you have been preparing milk (see chapter '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 specialty coffee which is particularly easy to digest. You can change the amount of this additional water (see chapter 'Preparation – Adjusting 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 professional fine foam frother to the 'Milk Foam' or 'Milk' position.
8 minutes after preparation, the milk system is automatically rinsed. Therefore always place a receptacle under the professional 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-bodied and aromatic specialty coffee.

Ground coffee

You can choose to use a second coffee variety, for example decaffeinated coffee, with the filter funnel for ground coffee.

• Never add more than two level measuring spoons of ground coffee.
• Use 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.
• If 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.
• The desired specialty 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.

• Place an espresso cup under the coffee spout.
• Tap the 'Aroma Selection' symbol (bottom center).
• Tap 'Espresso'.
• Touch .
• Touch 'Next'.
• Touch 'Start'.
  'Please add ground coffee'
• Open the powder chute cover.
• Place the filler funnel for ground coffee on the powder chute.
  
• Add the desired amount of ground coffee to the filler funnel (max. 2 level measuring spoons).
  The amount of ground coffee determines the intensity and aroma of the beverage, so you can adjust it to your personal preferences.
• Remove the filler funnel.
• Close the cover.
• Touch 'Next'.
  The preset amount of water for espresso flows into the cup.
  The 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:

• 'Hot water'
• '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.)
  
  There is a danger of scalding from hot water splashes.
  • Avoid direct contact with the skin.

Example: Hot water

• Place a cup under the hot-water spout.
• Tap '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 2 seconds to access the settings:

• Save 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'.
• The 'Replace' symbol allows you to choose between 'Replace product' and 'Reposition the product'.
  Depending 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.
Example: Proceed as follows to change the quantity for one coffee.

• Touch 'Coffee' for approximately 2 seconds.
• Tap the symbol for fill volume .
• Tap or to change the setting.
• Tap and confirm the setting by selecting 'Yes'.

Daily operation

Switching the machine on and off

• Place one receptacle under the coffee spout and another under the professional fine foam frother.
• Press the On/Off button .
  'Machine is rinsing'
  Your J8 twin is switched on or off.
  When the machine is switched off, the system is only rinsed if a specialty coffee has been prepared.
  If 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.
NOTICE
Milk, sparkling mineral water or other liquids can damage the water tank or the machine.

• Only fill the water tank with fresh, cold water.

• Remove the water tank and rinse it with cold water.
• Fill the water tank with fresh, cold water and reinsert the tank.

Maintenance action

Optimal coffee quality depends on many factors. One important prerequisite is regular maintenance of your J8 twin. Carry out the following 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)	•		Always empty the coffee grounds container when the machine is switched on. This is the only way of resetting the coffee grounds counter.
Clean the milk system (if heavily soiled, also dismantle and rinse it)	•		See chapter 'Maintenance – Cleaning the milk system'. We recommend that you dismantle and rinse the professional fine foam frother once a week (see chapter 'Maintenance – Dismantling and rinsing the professional fine foam frother')
Rinse the milk pipe	•
Rinse the water tank	•
Wipe the surface of the machine with a clean, soft, damp cloth (e.g. microfiber cloth)	•
Remove and clean the powder chute for ground coffee		•
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		•
Clean the top and bottom of the cup platform		•
Thoroughly clean the drip tray and coffee grounds container		•	In the 'Maintenance' area of the Cockpit, the message 'Maintenance information' appears.

Perform a self-diagnosis on a regular basis to check the maintenance status of your J8 twin. To do this, touch in the Cockpit.
You will find more information about the maintenance of your J8 twin in the 'Maintenance' area in the program item 'Maintenance information'.

Machine settings

Tap on the start screen to open the Cockpit. In the 'Machine settings' section the following settings can be configured:

Program item	Sub-item	Explanation
Page
'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
'Display'	'Set profile'	Create (0–4) profiles in the Cockpit and personalize 3 favorite specialty coffees for each profile
	'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
'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
'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 professional fine foam frother
	'Milk/Milk foam'	Show instructions for using the professional fine foam frother and switching between milk and milk foam
'Unit'		Set the unit for the amount of water (ml or oz)

Maintenance

Use of maintenance products that are harmful to health and discharge of liquids during maintenance program. Harmful if swallowed. Irritating to eyes and skin.

• Keep children AWAY.
• Keep children away from the machine while it is performing a maintenance program.
• Avoid contact with skin and eyes.
• Avoid generation of dust. Do not inhale dust.
• When using do not eat or drink.
• Keep maintenance products away from food, drink and animal food.
• Keep container tightly closed and dry. Keep in a cool place.

Basic information about maintenance:

• You can manage the maintenance of your J8 twin in the 'Maintenance' area of the Cockpit.
• If a maintenance program needs to be initiated, the area on the start screen appears with a red background.
  Tap to open the JURA Cockpit. Here, maintenance programs that need to be carried out are shown in the form of messages with red backgrounds. Touch a message to go straight to the corresponding maintenance program.
• Carry out each maintenance program 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.

• Place one receptacle under the coffee spout and another under the professional fine foam frother.
  
• Tap at the top to open the JURA Cockpit.
• Touch the 'Maintenance' symbol .
• Touch 'Rinse' to start the rinse operation.
  'Milk system is being rinsed'
  'Machine is rinsing'
  The rinse stops automatically.

Automatic milk system rinsing

8 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

To ensure that the milk system always works properly, you must clean it daily when you have been preparing milk.

Non-recommended cleaning agents will not optimally remove milk residues. This may cause the cappuccino frother to become blocked and fly off the machine. Discharge of hot steam.

• Use only original JURA milk system cleaner.

Harmful and irritating cleaning agent. Harmful if swallowed. Irritating to eyes and skin.

• Keep children AWAY.
• Avoid contact with skin and eyes.
• After contact with skin, wash immediately with plenty of water. In case of skin irritation, seek medical advice.
• After eye contact, immediately flush eyes with plenty of water and seek medical advice.
• If swallowed, rinse mouth immediately and drink large quantities of water. Do not induce vomiting. Seek medical advice immediately and show label.
  JURA milk system cleaner is available from specialized dealers.
  Use the container supplied for milk system cleaning.

Precondition: 'Clean the milk system' is displayed in the Cockpit.

• Tap at the top to open the JURA Cockpit.
• Tap 'Clean the milk system'.
• Touch 'Next'.
  'Cleaning agent for milk system'/'Connect the milk tube'/'Milk Foam position'/'Attach the spout to the container'
• Remove the milk pipe from the milk container or milk cooler.
• Pour one dosing unit of milk system cleaner into the container for milk system cleaning.
  
• Place the container under the coffee spout and the professional fine foam frother.
• Push the professional fine foam frother down as far as it will go to connect it firmly to the container.
  
• Connect the milk pipe to the container.
  
  To connect the milk pipe to the container correctly, the pipe must be fitted with a connector HP3.
• Turn the setting wheel of the professional fine foam frother to the 'Milk Foam' position.
• Touch 'Start'.
  The professional 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.

• Remove the milk pipe and rinse it thoroughly under running water.
• Remove the professional fine foam frother.
  
• Dismantle the professional fine foam frother into its individual parts.
  
• Rinse all the parts under running water. If there are severely dried-on milk residues, firstly immerse the individual parts in a solution of 8.5 oz (250 ml) water and one dosing unit of JURA milk system cleaner. Then rinse the individual parts thoroughly.
• Re-assemble the professional fine foam frother.
  
  Ensure that all individual parts are correctly and firmly connected to ensure optimum operation of the professional fine foam frother.
• Re-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.
Your J8 twin no longer has to be descaled if you are using the CLEARYL Smart+ filter cartridge.
CLEARYL Smart+ filter cartridges are available from jura.com and specialized dealers.
Precondition: 'Change the filter' is displayed in the Cockpit if the filter's capacity has been exhausted.

• Remove and empty the water tank.
• Turn the filter casing anti-clockwise and remove it from the water tank.
• Open the filter casing.
• Remove the old CLEARYL Smart+ filter cartridge.
  
• Insert a new CLEARYL Smart+ filter cartridge.
  
• Close the filter casing.
• Insert the filter casing into the water tank.
• Turn the filter casing clockwise until it audibly clicks into place.
  
• Fill 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'
• Empty 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.

Non-recommended (e.g. liquid) cleaning agents may contain substances that could damage the machine or leave residues.

• Use only original JURA Cleaning Tablets. These are formulated especially for your machine.

Harmful and irritating cleaning agent. Harmful if swallowed. Irritating to eyes and skin.

• Keep children AWAY.
• Avoid contact with skin and eyes.
• Avoid generation of dust. Do not inhale dust.
• After contact with skin, wash immediately with plenty of water. In case of skin irritation, seek medical advice.
• After eye contact, immediately flush eyes with plenty of water and seek medical advice.
• If swallowed, rinse mouth immediately and drink large quantities of water. Do not induce vomiting. Seek medical advice immediately and show label.

The cleaning program lasts approximately 20 minutes.
JURA cleaning tablets are available from specialized dealers.
Precondition: 'Clean' is displayed in the Cockpit.

• Fill the water tank.
• Tap at the top to open the JURA Cockpit.
• Tap 'Clean'.
• Touch 'Start'.
  'Empty coffee grounds container'/'Empty drip tray'
• Empty the drip tray and coffee grounds container and put them back into the machine.
• Place one receptacle under the coffee spout and another under the professional fine foam frother.
  
• Touch 'Next'.
  'Machine is being cleaned'
  The operation is interrupted, 'Add cleaning tablet'.
• Open the powder chute cover.
• Insert a JURA cleaning tablet into the powder chute.
  
• Close the cover.
• Touch 'Next'.
  'Machine is being cleaned'
  'Empty coffee grounds container'/'Empty drip tray'
• Empty 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 calcification depends on the hardness of your water.
If you are using a CLEARYL Smart+ filter cartridge, you will not be prompted to descale.

Non-recommended descaling agents (e.g. vinegar) may contain substances that could damage the machine or leave residues.

• Use only original JURA Descaling Tablets. These are formulated especially for your machine.

Harmful and irritating descaling agent. Harmful if swallowed. Irritating to eyes and skin.

• Keep children AWAY.
• Avoid contact with skin and eyes.
• Avoid generation of dust. Do not inhale dust.
• After contact with skin, wash immediately with plenty of water. In case of skin irritation, seek medical advice.
• After eye contact, immediately flush eyes with plenty of water. Remove contact lenses. Seek medical advice.
• If swallowed, rinse mouth immediately and drink large quantities of water. Do not induce vomiting. Seek medical advice immediately and show label.

NOTICE
If the descaling operation is interrupted, there may be damage to the machine.

• Allow the descaling program to run to the end.

The descaling program lasts approximately 20 minutes.
JURA descaling tablets are available from specialized dealers.
If the descaling agent comes into contact with sensitive surfaces (e.g. marble), damage cannot be ruled out. Clean up any splashes immediately.
Precondition: 'Descale' is displayed in the Cockpit.

• Tap at the top to open the JURA Cockpit.
• Tap 'Descale'.
• Touch 'Start'.
  'Empty drip tray'
• Empty the drip tray and coffee grounds container and put them back into the machine.
  'Pour descaling agent into water tank'
• Remove and empty the water tank.
• Completely dissolve 3 JURA Descaling Tablets in a receptacle holding 17 oz (500 ml) of water. This may take several minutes.
  
• Pour the solution into the empty water tank and insert it into the machine.
• Place one receptacle under the hot-water spout and another under the professional fine foam frother.
• Touch 'Next'.
  'Machine is being descaled', water flows repeatedly out of the hot-water spout and professional fine foam frother straight into the drip tray.
  'Empty drip tray'
• Empty the drip tray and coffee grounds container and put them back into the machine.
  'Rinse the water tank'/'Fill water tank'
• Empty the receptacles and place them back under the hot-water spout and the professional fine foam frother.
• Remove the water tank and rinse it thoroughly.
• Fill the water tank with fresh, cold water and reinsert the tank.
• Touch 'Next'.
  Water flows repeatedly out of the hot-water spout and professional fine foam frother straight into the drip tray.
  'Empty drip tray'
• Empty the drip tray and coffee grounds container and put them back into the machine.
  If the descaling operation stops unexpectedly, rinse the water tank thoroughly.

Descaling the water tank

Limescale deposits may form in the water tank. To ensure correct function of the machine, descale the water tank from time to time.

• Remove the water tank.
• If you use a CLEARYL Smart+ filter cartridge, remove this.
• Completely fill the water tank and dissolve 3 JURA Descaling Tablets in it.
• Leave the water tank with the descaling solution for several hours (e.g. overnight).
• Empty the water tank and rinse it thoroughly.
• If you use a CLEARYL Smart+ filter cartridge, insert this again.
• Fill the water tank with fresh, cold water and reinsert the tank.

Cleaning the bean container

Coffee beans may be covered with a slight oil film which remains on the walls of the bean container. These traces may negatively affect the coffee result. For this reason clean the bean container from time to time.
Precondition: 'Fill bean container' is displayed.

• Switch the machine off with the On/Off button .
• Remove the aroma preservation cover.
• Clean the bean container with a soft, dry cloth.
• Fill the bean container with coffee beans and close the aroma preservation cover.

Display messages

Messages on the start screen

Messages in the Cockpit

Message	Cause/Result	Action
The filter symbol lights up red. 'Change the filter'	The filter cartridge no longer works.	Replace the CLEARYL Smart+ filter cartridge (see chapter 'Maintenance – Inserting/ changing the filter').
'Clean'	The J8 twin is prompting you to clean it.	Perform cleaning (see chapter 'Maintenance – Cleaning the machine').
'Descale'	The J8 twin is prompting you to descale it.	Perform descaling (see chapter 'Maintenance – Descaling the machine').
'Clean the milk system'	The J8 twin prompts you to clean the milk system.	Perform milk system cleaning (see chapter 'Maintenance – Cleaning the milk system').

Troubleshooting

If you were unable to solve the problem, contact customer support in your country (see chapter 'JURA contact details/Legal information').

Transport/Emptying the system

Keep the packaging for your J8 twin. It should be used to protect the machine during transport.
In order to protect the J8 twin from frost during transport, the system must be emptied.
Precondition: The start screen is displayed.

• Remove the milk pipe from the professional fine foam frother.
• Place one receptacle under the hot-water spout and another under the professional fine foam frother.
• Tap at the top to open the JURA Cockpit.
• Touch the 'Machine setting' symbol.
• Tap to call up .
• Tap 'General'.
• Tap 'Empty system'.
• Touch 'Next'.
  'Remove the water tank'
• Remove and empty the water tank.
• Touch 'Start'.
  Steam will continue to be discharged from the professional fine foam frother and the hot-water spout until the system is empty. Your J8 twin is switched off.

Technical data

Voltage	120 V ~, 60 Hz
Power	1450 W
Conformity mark
Pump pressure	static, max. 15 bar
Holding capacity of water tank (without filter)	64 oz (1.9 l)
Holding capacity of bean container	2 × 6.4 oz (180 g)
Holding capacity of coffee grounds container	max. 16 portions
Cord length	approx. 47 in. (1.2 m)
Weight	25.4 lb (11.5 kg)
Dimensions (W × H × D)	12.2 × 14.2 × 17.6 in. (31 × 36.1 × 44.6 cm)
Milk system with connector	HP3
Interchangeable milk spout	CX3
CLEARYL filter cartridge Smart+ (RFID technology)	Frequency band 13.56 MHz Max. transmission power < 1 mW
JURA Wi-Fi Connect (Wi-Fi connection)	Frequency band 2.4 GHz Max. transmission power < 100 mW
JURA type	769

IMPORTANT SAFEGUARDS

Comply with the instructions for use
Failure to observe the instructions for use may result in serious injuries or damage to property. Safety information is therefore indicated as follows:

	This is the safety alert symbol. lt is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
	Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
	Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
	Used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE	NOTICE is used to address practices not related to personal injury.

Follow the basic safety precautions
When using electrical appliances, basic safety precautions shall always be followed, to reduce the risk of fire, electric shock, and/or injury to persons, including the following:

• Read all instructions.
• Do not touch hot surfaces. Use handles or knobs.
• To protect against fire, electric shock and injury to persons, do not immerse power cord, plugs, or body of machine in water or other liquid.
• Close supervision is necessary when any appliance is used by or near children.
• Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts, and before cleaning the appliance.
• Do not operate any appliance with a damaged cord or plug or after the appliance malfunctions, or has been damaged in any manner. Return appliance to the nearest authorized service facility for examination, repair or adjustment.
• The use of an accessory attachment not recommended by the appliance manufacturer may result in fire, electric shock, or injury to persons.
• Do not use outdoors.
• Do not let the cord hang over the edge of a table or counter, or touch hot surfaces.
• Do not place on or near a hot gas or electric burner, or in a heated oven.
• To disconnect, turn any control to 'OFF' then remove plug from wall outlet.
• Do not use appliance for other than intended use.
• Use extreme caution when dispensing hot steam, hot water or hot coffee.

Intended use

The appliance is designed and intended for household use only. It shall only be used for coffee preparation and to heat milk and water, according to these instructions. Use for any other purpose will be deemed improper. JURA Elektroapparate AG cannot accept any responsibility for the consequences of improper use.
People, including children, who

• do not have the physical, sensory or mental capabilities to use the appliance safely or
• are inexperienced or lack knowledge in how to use the appliance safely

must be supervised by a responsible person when using it, or must be instructed in how to use it correctly.

Special power cord set instructions

• A short power-supply cord is to be provided to reduce risks resulting from becoming entangled in or tripping over a longer cord.
• The cord shall be arranged so that it will not drape over the counter top or table top where it can be pulled on by children or tripped over.
• This appliance has a 3-pin grounded plug.
• Do not modify the plug in any way.

Extension cords are available an may be used if care is exercised in their use.
If the user chooses to use an extension cord,

• the marked electrical rating of the extension cord should be at least as great as the electrical rating of the appliance, and
• if the appliance is of the grounded type, the extension cord should be a grounding type 3-wire cord, and
• the longer cord should be arranged so that it will not drape over the counter top or tabletop where it can be pulled on by children or tripped over.

To reduce the risk of fire or electric shock, DO NOT remove any service covers. DO NOT modify the appliance in any way that is not described in these instructions. NO user serviceable parts included. Repair MUST be done by authorized personnel only.
In the event of signs of damage, for example if there is a smell of burning, unplug the machine immediately from outlet and contact JURA customer service.

This appliance is for household use. Any servicing other than cleaning and user maintenance shall be performed by an authorized service representative:

• Do not immerse base in water or try to disassemble.
• Do not put the appliance or any individual parts in the dishwasher.
• Check voltage to be sure that the voltage indicated on the name plate complies with your voltage. The name plate is located on the underside of the appliance.
• Never use warm or hot water to fill the water container. Use cold water only.
• Keep your hands and the cord away from hot parts of the appliance during operation.

There is a risk of scalds or burns on the spouts and the cappuccino frother/nozzle.

• Keep children away.
• Do not touch any hot parts. Use the handles or knobs provided.
• Ensure that the cappuccino frother/nozzle is correctly fitted and clean. If incorrectly fitted or if they become blocked, the cappuccino frother or its parts might come off.

NOTICE

• Never clean with scouring powders or hard implements.
• Ensure that the ventilation slots are not covered.
• Never pull out the drip tray during the brewing process. Only pull the drip tray when the display instructs you or when the appliance is ready for use.

NEVER DO
(or you will void your warranty protection):

• Never fill instant coffee, chocolate mix etc. into the bean container or ground coffee funnel (filler funnel for ground coffee). It will damage the functioning of the brewing chamber.
• Never fill sugar coated coffee beans into the bean container. In case of doubt, call your dealer.
• Never fill anything other than coffee beans into the bean container (no chocolate, no rice, no nuts, no spices, nothing other than roasted coffee beans).
• Never fill frozen beans into the bean container. If you store beans in the freezer, let them thaw 3 to 4 hours before filling them into the bean container.
• Never fill anything but fresh, cold and clean water into the water tank, except when decalcifying.
• Never use mineral or carbonated water. You can use tap water, bottled water, spring water and reverse osmosis water.
• Never do anything with the machine which is not described in these instructions. In case of doubt, call your dealer.