Jura 746 User manual

§
Type 746

2
Control elements 4
Important information 6
Proper use ......................................................................................................................................................6
For your safety...............................................................................................................................................6
1 Preparing and using for the first time 10
JURA on the Internet....................................................................................................................................10
Setting up the machine ..............................................................................................................................10
Filling the bean container...........................................................................................................................10
Determining the water hardness ..............................................................................................................10
First-time use.................................................................................................................................................11
2 Preparation 13
Espresso and coffee.....................................................................................................................................13
Two espressi and two coffees.....................................................................................................................13
Permanently setting the amount of water for the cup size .................................................................14
Adjusting the grinder ..................................................................................................................................14
Ground coffee...............................................................................................................................................15
Hot water.......................................................................................................................................................16
3 Daily operation 17
Filling the water tank...................................................................................................................................17
Switching on the machine..........................................................................................................................17
Daily maintenance.......................................................................................................................................17
Regular maintenance ..................................................................................................................................18
Switching off the machine..........................................................................................................................18
4 Permanent settings in programming mode 19
Automatic switch-off...................................................................................................................................19
Setting the water hardness .......................................................................................................................20
5 Maintenance 21
Inserting/changing the filter.......................................................................................................................21
Cleaning the machine ................................................................................................................................22
Descaling the machine ..............................................................................................................................23
Cleaning the bean container.....................................................................................................................25
Descaling the water tank...........................................................................................................................25
6 Display messages 26
7 Troubleshooting 27
8 Transport and environmentally friendly disposal 28
Transport/ Emptying the system.............................................................................................................28
Disposal.........................................................................................................................................................28
Table of contents
Your D4

3
Table of contents
Warnings
JWARNING
JCAUTION
Always take note of any information marked with the words CAUTION or
WARNING and a warning sign. The signal word WARNING draws your
attention to potential serious injury, and the signal word CAUTION to
potential minor injury.
CAUTION CAUTION draws your attention to potential damage to the machine.
Symbols used
TPrompt to take action. This symbol means that you are being prompted to
perform some action.
EInformation and tips to make it even easier to use your D4.
Symbol description
9 Technical data 29
10 Index 30
11 JURA contact details/ Legal information 32

4
Control elements
Control elements
§
15
14
4
3
7
8
6
5
2
1
9
10
13
11
12
1 On/Off button Q
2 Water tank cover
3 Water tank
4 Mains cable (back of the machine)
5 Height-adjustable coffee spout
6 Coffee grounds container
7 Drip tray
8 Cup grille
9 Filler funnel cover
10 Filler funnel for ground coffee
11 Bean container cover
12 Grinder adjustment switch
13 Bean container with aroma preservation
cover
14 Switch for hot water preparation
15 Hot-water nozzle

5
Control elements
Symbol display
L Cleaning symbol
& Descaling symbol
2x Double Product symbol
< Espresso symbol
>Coffee symbol
; ‘Mild’ Coffee Strength symbol
:‘Normal’ Coffee Strength symbol
_‘Strong’ Coffee Strength symbol
MWater Tank symbol
!Filter symbol
WCoffee Grounds Container symbol
Measuring spoon for ground coffee
Service socket for optional JURA Smart Connect (under cover)

6
Important information
Important information
The machine is designed and intended for private
domestic use. It should only be used for coffee pre-
paration and to heat water. Use for any other pur-
pose will be deemed improper. JURA Elektroappar-
ate AG cannot accept any responsibility for the
consequences of improper use.
Before using the machine, read these instructions
for use thoroughly and completely and comply
with the instructions they contain. A warranty ser-
vice is not applicable for damage or defects caused
by non-compliance with the instructions for use.
Keeptheseinstructionsforuse closetothemachine
and pass them on to the next user.
Please carefully read and observe the important
safety information set out below.
To avoid danger of potentially fatal electric shock:
UNever use a machine which is damaged or has
a defective mains cable.
UIn the event of signs of damage, for example if
thereisa smellofburning,unplug themachine
immediately from the power supply and con-
tact JURA service.
UIf the mains cable of this machine is damaged,
it must be repaired either directly by JURA or
by an authorised JURA service centre.
UMake sure that the D4 and the mains cable are
not located close to hot surfaces.
UBe careful to ensure that the mains cable is not
trapped and does not rub against sharp edges.
Proper use
For your safety
J

7
Important information
UNever open and repair the machine yourself.
Do not modify the machine in any way that
is not described in these instructions for use.
The machine contains live parts. If opened,
there is a danger of potentially fatal injury.
Repairs may only be carried out by authorised
JURA service centres, using original spare parts
and accessories.
UTo completely and safely disconnect the
machine from the power supply, first switch
off the D4 using the On/Off button Q. Only
then should you remove the mains plug from
the power socket.
There is a risk of scalds or burns on the spouts or
the hot-water nozzle:
UPlace the machine out of the reach of children.
UDo not touch any hot parts. Use the handles
provided.
UBe careful to ensure that the hot-water nozzle
is correctly installed and clean. If incorrectly
fitted or if it becomes blocked, the hot-water
nozzle might come off.
A defective machine is not safe and could cause
injury or fire. To avoid damage and any associated
risk of injury or fire:
UNever allow the mains cable to loosely hang
down. The mains cable could pose a tripping
hazard or become damaged.
UProtect the D4 from environmental influences
such as rain, frost and direct sunlight.
UDo not immerse the D4, mains cable or con-
nections in water.

8
Important information
UDo not put the D4 or any individual parts in
the dishwasher.
UDo not use alkaline cleaning agents; only use
a soft cloth and mild cleaning agents.
UBefore cleaning, switch the D4 off with the
On/Off button Q. Always wipe the D4 with a
damp cloth rather than a wet one, and protect
it from prolonged exposure to water splash.
UOnly connect the machine to the mains
voltage in accordance with the information on
the rating plate. The rating plate is located on
the underside of your D4. Further technical
data is provided in these instructions for use
(see Chapter 9 ‘Technical data’).
UConnect the D4 directly to a domestic power
socket. Using multi-socket adapters or exten-
sion cords may cause overheating.
UPlease only use original JURA maintenance
products. Use of products that are not expli-
citly recommended by JURA could damage the
machine.
UDo not use any coffee beans treated with
additives or caramelised coffee beans.
UOnly fill the water tank with fresh, cold water.
USwitch the machine off with the On/Off but-
ton Qif you are going to be absent for a longer
period of time and remove the mains plug
from the power socket.
UChildren may not clean or service the machine
unless supervised by a responsible person.
UDo not allow children to play with the machine.
UKeep children under the age of 8 away from
the machine, or supervise them constantly.

9
Important information
UChildren aged 8 and over may only operate
the machine without supervision if they have
been instructed in how to use it safely. Chil-
dren must be able to recognise and under-
stand the potential dangers arising from incor-
rect use.
People, including children, who
Udo not have the physical, sensory or mental
capabilities to use the machine safely or
Uare inexperienced or lack knowledge in how to
use the machine safely
must be supervised by a responsible person when
using it, or must be instructed in how to use it cor-
rectly.
Safety when handling the CLARIS Smart filter cart-
ridge:
UFilter cartridges should be kept out of the
reach of children.
UStore filter cartridges in a dry place in the
sealed packaging.
UProtect cartridges from heat and direct
sunlight.
UDo not use damaged filter cartridges.
UDo not open filter cartridges.

10
1 Preparing and using for the first time
1 Preparing and using for the first time
Visit us on the Internet. You can download short operating instruc-
tions for your machine from the JURA website (www.jura.com). You
will also find interesting and up-to-date information on your D4 and
on every aspect of coffee.
If you need assistance with using your machine, you can find this at
www.jura.com/service.
When setting up your D4, please note the following:
UPlace the D4 on a horizontal surface that is not sensitive to
water.
UChoose a spot for your D4 which protects the machine against
overheating. Ensure that the ventilation slots are not covered.
The bean container has an aroma preservation cover. This will ensure
that your coffee beans retain their aroma for longer.
Coffee beans which have been treated with additives (e.g. sugar),
ground coffee or freeze-dried coffee will damage the grinder.
T Only use roasted, untreated coffee beans to fill the bean con-
tainer.
TOpen the bean container cover and remove the aroma pre-
servation cover.
TRemove any dirt or foreign objects from inside the bean
container.
TFill the bean container with coffee beans, then close the
aroma preservation cover and the bean container cover.
When you use the machine for the first time, you must set the water
hardness. If you do not know the hardness of your water, you can
find this out first. Use the Aquadur® test strips supplied with the
machine.
JURA on the Internet
Setting up the machine
Filling the bean container
CAUTION
Determining the water
hardness

11
1 Preparing and using for the first time
THold the test strip briefly (for 1second) under flowing water.
Shake off the water.
TWait for about 1minute.
TYou 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.
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.
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 container has been filled.
TInsert the mains plug into a power socket.
TPress the On/Off button Qto switch the D4 on.
The Coffee symbol >lights up.
TTouch the Coffee symbol >.
The Coffee symbol >and the Coffee Strength symbols ;
and :light up brightly.
EThe Coffee Strength symbols refer to the water hardness
level that you need to set: 1–15°dH(;), 16–23°dH(:),
24–30°dH(_).
EIf you do not know the hardness of your water, you can find
this out first (see Chapter 1 ‘Preparing and using for the first
time – Determining the water hardness’).
TSelect the water hardness you require by touching the cor-
responding Coffee Strength symbol.
First-time use
JWARNING
CAUTION

12
1 Preparing and using for the first time
TTouch the Coffee symbol >to confirm the water hardness
setting.
The Filter symbol !and the Water Tank symbol Mlight up.
TOpen the water tank cover.
TRemove the water tank and rinse it with cold water.
TOpen the filter holder.
TInsert the CLARIS Smart filter cartridge into the water tank,
exerting slight pressure.
TClose the filter holder. It will click into place audibly.
TFill the water tank with fresh, cold water and reinsert the
tank.
EThe machine automatically detects that you have just inserted
the filter cartridge.
The light segment on the switch lights up.
TPlace a receptacle under the hot-water nozzle.
TTurn the switch to the§position.
The light segment on the switch flashes, water flows out of
the hot-water nozzle.
EYou can interrupt rinsing of the filter at any time. To do this,
turn the switch clockwise. Turn the switch anticlockwise to
continue rinsing the filter.
EThe water may be slightly discoloured. This is not harmful to
health and does not affect the taste.
Rinsing of the filter stops automatically. The light segment
on the switch lights up.
TTurn the switch to the °position.
The <and >symbols flash, the system fills up with water.
The Coffee Grounds Container symbol Wlights up.
TEmpty the drip tray and coffee grounds container and put
them back into the machine.
TPlace a receptacle under the coffee spout.
The <and >symbols flash, the system is rinsed. Water
flows out of the coffee spout. The rinse stops automatically.
Your D4 is ready for use.

13
2 Preparation
2 Preparation
Basic information about preparing drinks:
UBefore and during the grinding operation you can select the
coffee strength for the speciality coffees espresso <and
coffee >: ‘mild’ (;), ‘normal’ (:), ‘strong’ (_).
UDouble product: To prepare two speciality coffees, touch the
Double Product symbol ‘2x’ before preparation. Then choose
between espresso <and coffee >. When you prepare
double products, two brewing operations take place one after
the other.
UWhile a speciality coffee is being prepared, you can stop pre-
paration at any time. Simply touch the symbol for the speci-
ality coffee in question.
Coffee tastes best served hot. A cold porcelain cup cools the bever-
age – and impairs the taste. We therefore recommend prewarming
the cups. The full coffee aroma can develop only in prewarmed cups.
You can purchase a JURA cup warmer from your specialised dealer.
Espresso and coffee are both prepared following this model.
Example:Proceed as follows to prepare one coffee.
Precondition:Your D4 is ready for use.
TPlace a cup under the coffee spout.
TTouch the Coffee symbol >.
Preparation starts. The preset amount of water for coffee
flows into the cup.
Preparation stops automatically. Your D4 is once more ready
for use.
When you prepare two speciality coffees at once, the amount of
water selected for the single product is used for each cup.
The preparation of twoespressi and twocoffees follows this same
model.
Example:Proceed as follows to prepare two espressi.
Precondition:Your D4 is ready for use.
Espresso and coffee
Two espressi and two
coffees

14
2 Preparation
TPlace two espresso cups under the coffee spout.
TTouch the Double Product symbol ‘2x’.
The ‘2x’ symbol lights up brightly.
TTouch the Espresso symbol <.
Preparation starts. Two brewing operations take place one
after the other. The preset amount of water flows into the
cups.
Preparation stops automatically. Your D4 is once more ready
for use.
It is easy to make permanent settings for the amount of water for all
speciality coffees according to the cup size. Adjust the amount once
as shown in the following example. Every time you prepare a drink
in the future, this amount of water will be dispensed.
The process for permanently adapting the amount of water to the
cup size is the same for all speciality coffees.
Example:Proceed as follows to permanently set the amount of
water for one coffee.
Precondition:Your D4 is ready for use.
TPlace a cup under the coffee spout.
TTouch the Coffee symbol>for approximately 3 seconds.
Preparation starts and the coffee flows into the cup.
TTouch the Coffee symbol >as soon as there is sufficient
coffee in the cup.
Preparation stops. The set amount of water for one coffee is
permanently stored. Your D4 is once more ready for use.
EYou can alter this setting at any time by repeating the above
procedure.
You can adjust the grinder to suit the degree of roast of your coffee.
If you adjust the consistency of grind when the grinder is not oper-
ating, the grinder adjustment switch could be damaged.
T Only adjust the consistency of grind when the grinder is run-
ning.
Permanently setting the
amount of water for the
cup size
Adjusting the grinder
CAUTION

15
2 Preparation
The consistency of grind is correct if the coffee flows regularly from
the coffee spout. In addition a fine, thick crema forms.
Example:Proceed as follows to change the consistency of grind
during the preparation of an espresso.
TPlace a cup under the coffee spout.
TOpen the bean container cover and remove the aroma pre-
servation cover.
TTouch the Espresso symbol <.
TTurn the grinder adjustment switch to the desired position
while the grinder is running.
The preset amount of water flows into the cup. Preparation
stops automatically. Your D4 is once more ready for use.
You can choose to use a second coffee variety, for example decaf-
feinated coffee, with the filter funnel for ground coffee.
Basic information about 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 enough ground coffee, the
D4 stops the operation and is then ready for use again.
UThe desired speciality coffee must be prepared within approx-
imately one minute after filling with the ground coffee. Oth-
erwise the D4 stops the operation and is once more ready for
use.
UAll speciality coffees with ground coffee are always prepared
following the same model.
Example:Proceed as follows to prepare one espresso using ground
coffee.
Precondition:Your D4 is ready for use.
TPlace an espresso cup under the coffee spout.
Ground coffee

16
2 Preparation
TOpen the cover of the filler funnel for ground coffee.
The ;, :and _symbols light up.
TPlace one level measuring spoon of ground coffee into the
filler funnel.
TClose the cover of the filler funnel.
The <and >symbols light up.
TTouch the Espresso symbol <.
Preparation starts. The preset amount of water for coffee
flows into the cup.
Preparation stops automatically. Your D4 is once more ready
for use.
There is a danger of scalding from hot water splashes.
T Avoid direct contact with the skin.
Precondition:Your D4 is ready for use.
TPlace a cup under the hot-water nozzle.
TTurn the switch to the§position.
The light segment on the switch flashes, water flows out of
the hot-water nozzle.
TWhen there is enough water in the cup, turn the switch back
to the °position.
Your D4 is once more ready for use.
Hot water
JCAUTION

17
3 Daily operation
3 Daily operation
Daily maintenance of the machine and hygiene when handling cof-
fee and water are key to a perfect coffee result in the cup every time.
You should therefore change the water daily.
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.
TOpen the water tank cover.
TRemove the water tank and rinse it with cold water.
TFill the water tank with fresh, cold water and reinsert the
tank.
TClose the water tank cover.
TPlace a receptacle under the coffee spout.
TPress the On/Off button Qto switch the D4 on.
The <and >symbols flash, the system is rinsed. The rinse
stops automatically. Your D4 is ready for use.
To ensure that you get many years of reliable service out of your D4
and to guarantee the optimum coffee quality, the machine requires
daily maintenance.
TPull out the drip tray.
TEmpty the coffee grounds container and the drip tray. Rinse
them both with warm water.
EAlways empty the coffee grounds container when the machine
is switched on. This is the only way of resetting the coffee
grounds counter.
Filling the water tank
CAUTION
Switching on the
machine
Daily maintenance

18
3 Daily operation
TRefit the coffee grounds container and the drip tray.
TRinse the water tank with clean water.
TWipe the surface of the machine with a clean, soft, damp
cloth (e.g. microfibre cloth).
Carry out the following maintenance actions regularly or
as required:
UClean the inside of the water tank, e.g. with a brush. Further
information about the water tank is provided in these instruc-
tions for use (see Chapter 5 ‘Maintenance – Descaling the
water tank’).
UTraces of coffee may stick to the top and bottom of the cup
grille. If this happens, clean the cup grille.
When the D4 is switched off, the system is automatically rinsed if a
speciality coffee has been prepared.
TPlace a receptacle under the coffee spout.
TPress the On/Off button Q.
The <and >symbols flash, the system is rinsed. The rinse
stops automatically. Your D4 is switched off.
Regular maintenance
Switching off the
machine

19
4 Permanent settings in programming mode
4 Permanent settings in programming mode
By instructing your D4 to automatically switch itself off, you can cut
down your energy consumption. If this function is activated, your
D4 switches off automatically after the preset time following the last
action on the machine.
The number of symbols that are lit up indicates the activated switch-
off time:
Switch-off time Symbol(s) shown in display
30minutes The ;symbol lights up brightly.
1hour The ;and :symbols light up brightly.
2hours The ;, :and _symbols light up brightly.
Example:Proceed as follows to change the switch-off time from
30minutes to 1hour.
Precondition:Your D4 is ready for use.
TTouch the Double Product symbol ‘2x’ for approximately
2 seconds.
The ‘2x’, <, >, Land &symbols light up brightly.
TTouch the Espresso symbol <.
TTouch the :symbol.
TTouch the Espresso symbol <to confirm the switch-off time
setting.
Your D4 is once more ready for use.
Automatic switch-off

20
4 Permanent settings in programming mode
The harder the water is, the more frequently the D4 needs to be
descaled. It is therefore important to set the water hardness accur-
ately.
The water hardness was set when the machine was first used. You
can change this setting at any time.
The number of symbols that are lit up indicates the set water hard-
ness level:
Level Water hardness
The ;symbol lights up brightly. 1–15°dH
The ;and :symbols light up brightly. 16–23°dH
The ;, :and _symbols light up brightly. 24–30°dH
Precondition:Your D4 is ready for use.
TTouch the Double Product symbol ‘2x’ for approximately
2 seconds.
The ‘2x’, <, >, Land &symbols light up brightly.
TTouch the Coffee symbol >.
TSelect the water hardness you require by touching the cor-
responding Coffee Strength symbol.
TTouch the Coffee symbol >to confirm the water hardness
setting.
Your D4 is once more ready for use.
Setting the water
hardness