Küppersbusch cafe profi EKV 6600.0 User manual

Built-in fully-automatic coffee
machine
EKV 6600.0

Service Manual: H6-72-01
Responsible: Mario Kühne KÜPPERSBUSCH HAUSGERÄTE AG
Email: [e-mail]
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 21.12.06 45801 Gelsenkirchen

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Contents
1. Safety ............................................................................................................................... 5
2. Safety instructions ......................................................................................................... 6
3. Your appliance at a glance ............................................................................................ 7
4. Technical data................................................................................................................. 9
4.1 General.................................................................................................................. 9
5. Installation..................................................................................................................... 10
5.1 Instructions for installation................................................................................... 10
5.2 EKV 6600.0 installation dimensions ................................................................... 10
5.3 Installation in a top unit ....................................................................................... 11
5.4 Installation in a tall unit ....................................................................................... 11
6. Button assignments ..................................................................................................... 13
6.1 Pre-set button assignment .................................................................................. 13
6.2 Button assignment in the programming mode..................................................... 13
7. User settings.................................................................................................................14
8. Fittings........................................................................................................................... 16
8.1 Aroma Control ..................................................................................................... 16
8.2 Water tank ........................................................................................................... 16
8.3 Grinder ................................................................................................................ 17
8.4 Brewing unit......................................................................................................... 17
8.5 Two separate heating systems............................................................................ 17
8.6 Accessories ......................................................................................................... 17
9. AquaPrima water filter ................................................................................................. 18
9.1 Operating principle .............................................................................................. 18
9.2 Inserting the AquaPrima water filter .................................................................... 19
10. Accessing individual components ............................................................................. 20
10.1 Coffee dispenser ................................................................................................. 21
10.2 Door lock ............................................................................................................. 22
10.3 AromaControl ...................................................................................................... 23
10.4 Flap support ........................................................................................................ 23
10.5 Hot water nozzle.................................................................................................. 24
10.6 Brewing unit sieve ............................................................................................... 25
11. Care and Maintenance ................................................................................................. 26
11.1 Cleaning .............................................................................................................. 26
11.2 Descaling............................................................................................................. 28

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12. What is to be done if … ................................................................................................ 30
12.1 … “Water tank empty“ is not shown? ..................................................................30
12.2 … Ventilate “permanently“ is shown?.................................................................. 30
12.3 … Water is not dispensed or is dispensed with insufficient pressure?................ 31
12.4 ... The drip tray drops down?............................................................................... 32
12.5 … Coffee bean box does not close? ................................................................... 32
12.6 … Coffee is not dispensed uniformly or is dispensed without flowing? ............... 32
12.7 ... Coffee tastes bitter? ........................................................................................ 33
12.8 ... Coffee tastes bland?........................................................................................ 33
12.9 ... Coffee tastes rancid?....................................................................................... 33
12.10 ... The coffee does not have a good crema? ....................................................... 33
12.11 … Faults develop during operation? ...................................................................34
12.12 … The following messages are shown?..............................................................34
13. Test and diagnosis program........................................................................................ 35
13.1 Tests carried out on component and function ..................................................... 35
13.2 Testing the microswitch ....................................................................................... 37
14. Heating diagram............................................................................................................ 38

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1. Safety
• Because of the universal cut-off device (relay and manometric switch), on measuring the connector
plug in accordance with VDE 0701, the boiler must be tested for insulation faults by means of direct
measurement, or the differential current of the appliance must be measured!
• Beware of the sharp edges of stainless steel units when replacing components.
Risk of scalding!
Water which is dispensed is very hot! Do not touch the outlet pipe!
The boiler heats up to 98°C - 128°C during operation.

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2. Safety instructions
• The appliance may only be connected to a suitable wall outlet. Do not remove the plug from the
socket by pulling on the cable! Do not use any extension cables in wet rooms.
• The power supply must correspond to the information on the nameplate.
Recommendation: Connect the appliance via an F1 switch.
• The appliance must be earthed for electrical safety reaons. The manufacturer will not be held
liable for any damage cause by insufficient earthing of the appliance.
• Connecting the appliance to the mains and repairing and servicing the appliance may only be
carried out by a qualified electrician according to currently-valid safety regulations. For your own
safety, do not allow anyone other than a qualified service technician to instal, service or repair this
appliance.
• The appliance may only be installed and connected to the mains and to a water supply in accord-
ance with separate installation instructions.
• Never expose the appliance to adverse weather conditions (rain, snow or frost) and do not operate
it with wet hands.
• When cleaning the appliance, carrying out repairs or replacing components, the appliance must be
disconnected from the mains (switch off the fuse!).
• Do not switch the appliance on until it has been installed!
• The appliance is intended for making coffee, espresso and hot water, for frothing milk and for heat-
ing up beverages with steam for use in a home.
In the case of inappropriate operation or incorrect handling, liability cannot be assumed for any
resulting damage.
• Never operate a defect appliance or an appliance with faulty cables. The manufacturer of the prod-
uct will assume no liability whatsoever for consequences or damage resulting from faulty installa-
tion, insufficient maintenance or no maintenance at all.
• Some of the parts, such as the water discharge pipe and the brewing unit, need to be heated up if
the appliance is to operate properly. Caution, danger of scalding!
• Please be careful when working with the hot water discharge pipe and the brewing unit: Do not
hold your hand under these parts and wait until hot parts have cooled down.
• The electric cable may not be replaced by the user.
• Do not interrupt any cleaning process that has commenced, since residual cleaning agent may
then remain in the inside of the brewing unit.
• Only fill cold, clean tap water into the tank intended for this purpose; hot water and other liquids
may damage the appliance.
• Use fresh water every day in order to avoid bacteria from developing.
• Empty the water tank and the coffee bean box if the appliance is not to be used for a long time.
Empty the collecting bowl and the salt box and clean them. Switch off the appliance.
• Only use original spare parts and attachments.
• Only extinguish fire with carbon dioxide (CO2)
• Do not switch the appliance on until it has been installed!
• Do not, under any circumstances, use steam or pressure cleaning machines to clean the appli-
ance! Damage caused to your appliance by cleaning it this way can make it lethally dangerous.
• Do not insert anything into the appliance openings (Danger! Electric voltage!)

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3. Your appliance at a glance
NBar handle to open the panel
OClear text display
PControl panel
QRotating knobs for aroma control
RNozzle
SService flap
TCoffee dispenser
Drip tray
UBox for coffee grounds
VDrip tray
MDisplay for drip tray
N
O
NQ
R
T
M
S
OP
U
V
¬

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Fittings
NRed clear text display
OBox for coffee beans
PWater tank
QMain switch
RAdjusting the grinding setting
SBrewing unit
The features
• LED lighting
• Central switch-off device
• Adjustable coffee dispenser height
• Electronic push buttons
• Electronic clock with a minute minder
• Pre-set time
• Standby mode
• Programming quantities for 3 different cup sizes
• Dispensing 1 or 2 cups
• Automatic cleaning and descaling program
• Automatic rinse when switching the machine on and off
R
S
N
O
P
Q

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4. Technical data
4.1 General
This service manual serves the purpose of providing customer service technicians who already have the
know-how required to repair coffee machines with specific information on the operating mode of the
appliances indicated on the front page.
Overall dimensions
Height 38.0cm
Width 59.6cm
Depth 32.6cm
Weight 13kg
Niche dimensions (WxDxH) 560 x 450 x 381mm
Connected load in KW 1250W
Voltage (V) 230V 50Hz
Fuse 10A
Connecting cable 1.20m
Ready to plug in Yes
Components
Removable water tank 1.7l
Coffe bean box 300g
Coffee grounds box 12 units volumeter
Collecting bowl 0.8l
Warning signals optical or acoustic
Pumping capacity 15bar
Grinder Ceramic disk grinder
Height-adjustable coffee dispenser 80-105mm
rear 155mm
Lighting 3 LED

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5. Installation
5.1 Instructions for installation
• Statutory regulations and the connection specifications issued by the local power supply company
must be strictly observed.
• Prior to connecting the appliance to the mains ensure that the power supply complies with that for
which the appliance has been designed.
• The appliance may not carry any current when it is being connected or when repairs are being
carried out. Disconnect the fuse.
• Full protection against accidental contact must be ensured on installation.
• The appliance may only be connected to a properly-installed wall outlet. The connection cable
should only be replaced by an electrician in observance of the relevant regulations.
• Safety regulations require that an all-pole isolator with a contact opening of at least 3 mm be used
on the installation side.
• The built-in cabinet must be secured firmly to the floor and on the walls since the substantial
weight of the cabinet may otherwise easily cause it to fall over.
• The fully-automatic coffee machine must be installed at a safe distance from other sources of heat,
such as other home appliances, in order to ensure that the temperature does not rise excessively.
5.2 EKV 6600.0 installation dimensions

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5.3 Installation in a top unit
5.4 Installation in a tall unit
at least 570mm
(without a front
door at least 550mm
)

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The height can possibly be regulated with the adjusting screw (clearances, flush mounting).

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6. Button assignments
6.1 Pre-set button assignment
When the control panel has been opened up various beverages can be selected simply by pressing a
button. The buttons have been assigned in the factory. The individual user settings can be set with the
electronic push buttons.
Pre-setting at the factory
Descaling
Programming, standby, user settings
Dispensing 1 cup of coffee, large
Dispensing 1 cup of coffee
Dispensing 1 cup of espresso
Dispensing hot water
Dispensing steam
Red clear text display
6.2 Button assignment in the programming mode
In the programming mode (see the section on programming) four buttons have been assigned a second
function. These functions are for going through all of the menu items:
1 START with button 
2 CURSOR BUTTONS  and  (and )
for selecting and confirming and for increasing/decreasing the settings.
3 CONFIRM with button 
4 EXIT with button 



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7. User settings
1. Start with P2. Select a function 3. Making settings
Exit with ESC select confirm select confirm exit
Function Display Setting and display
Standby standby The machine switches into the power-down
mode at 3-4 W
Rinsing
The cycle is automatically
cleaned when the
machine is switched on.
Coffee is always made
with fresh water.
rinse on - off
A rinsing cycle is activated at a boiler
temperature of below 40°C
Language
Selecting a language on
the clear text display.
The following languages
are available: German,
French, English, Spanish
and Dutch
language German - ENGLISH
Contrast contrast The contrast setting for the clear text dis-
play can be made in 10 stages.
Lighting lighting Use ON or OFF to switch the lighting on or
off
Water hardness water hardness There are 4 settings for the water hardness.
Water filter water filter on off reset
Water filter present (yes - no): is only set the
first time the water filter is used. “Reset” will
then need to be selected every time the
filter is changed.
Temperature temperature low medium high
Choosing the temperature for making cof-
fee. There is a choice of low (88°C),
medium (90°C) and high (92°C). A cold cup
will cool down coffee being poured into it by
approx.10°C. The temperature of the water
used for brewing the ground coffee powder
should be between 88°C and 92°C.

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Function Display Setting and display
Aroma Espresso AROMA ESPRESSO Choosing the quantity of ground coffee
for espresso between 6.87, 8.5 and
over 10g/s for 80 - 122 impulses.
Aroma coffee AROMA coffee Choosing the quantity of ground coffee
between 1.3 and 1.5g/s for approx.
300 impulses of 100ml. each.
Aroma coffee long AROMA coffee long Choosing the quantity of ground coffee
for coffee long.
Moisten the pump for 1.5 - 3seconds.
Pre-brewing pre-brewing The coffee is firstly moistened. This
allows the flavour to develop fully.
When the setting is at “long“ the coffee
will be pre-brewed for 4 seconds.
Total coffee total coffee The total number of coffee portions
being dispensed is shown.
Timer Timer machine off after xx xx
Choice of time after which the machine
will switch to the standby mode (pre-set
at 3 hours).
Timer
Timer set „Timer has no
function“
timer timer-time-switching times
Setting whether the switch-on and
switch-off times are to be activated.
time xx - xx
Set the time.
switching times
on xx:xx off xx:xx
Setting the switch-on and switch-off
times.
show the time of day on off
Fade the time in or out.
Cleaning cycle cleaning cycle The cleaning cycle serves to degrease
the brewing unit.
Factory settings factory settings no yes
Re-setting all of the settings to the
as-delivered state.

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8. Fittings
8.1 Aroma Control
Operation for standard grinder setting
Aroma Control enables the machine to be set individually according to a customer's
wishes, from American weak to Italian strong, simply by turning the aroma knob.
Maximum setting – for a light coffee, café crème type
Turn the aroma knob anti-clockwise until it stops
• Fast brewing process
• Good extraction of flavour
• Low water pressure
• Normal quantity of water
Medium setting - for normal coffee, espresso type
Aroma knob in the middle
• Slow brewing process
• Optimal extraction of flavour
• Medium water pressure
• Little water
Minimum setting - for strong coffee, ristretto type
Turn the aroma knob clockwise until it stops
• Slow brewing process
• Optimal extraction of flavour
• High water pressure
• Little water
8.2 Water tank
The fully-automatic coffee machine has an integrated water tank which
holds approximately 1.7 litres of water. The tank should be filled with
fresh water at least once a day, since germs may develop in water which
has been left standing.
The water tank can easily be removed from the front when the flap panel
has been opened up and it can then be filled through an opening which
is covered with a spring lid.

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8.3 Grinder
In order for the coffee beans to develop their full flavour to perfection, they must firstly be ground to just
the right fineness. The excellent quality of the innovative ceramic grinder guarantees that you will be able
to enjoy perfect coffee.
The first-class grinder material has a very long useful
life span and also enables coffee to be precisely
dosed, ensuring that it is consistently ground.
The grinder should not be set at too fine a setting,
since this will make the coffee grounds very compact
and reduce the flow. If possible do not reset the
grinder; leave it at the factory setting of "5". No coffee
beans should be present in the grinder when the
grinding setting is adjusted.
8.4 Brewing unit
The brewing unit brings out the full aroma and is the heart of all fully-automatic coffee machines. It is
simple to remove and easy to clean.
8.5 Two separate heating systems
The new fully-automatic built-in coffee machine naturally also supplies hot water for tea or for other hot
beverages. The two separate heating systems ensure that hot water and steam are always available.
8.6 Accessories
A number of accessories for cleaning and maintenance purposes are supplied with the fully-automatic
coffee machine.
The key is used for removing the top sieve when the brewing unit is cleaned. The brush is used to
remove residual coffee powder from the machine. The drip safeguard device is inserted into the coffee
dispenser when the machine is cleaned. The water filter is put into the water tank to improve the quality
of the water. The water hardness strips are used to test the water hardness on the spot. The grease
solvent tablets for coffee are for degreasing the brewing unit.

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9. AquaPrima water filter
The best pH level for a good cup of coffee is in the neutral range of between 6.5 and 7.5. Coffee will taste
bitter if the pH is higher. On the other hand, if it is lower coffee will take on a slightly tart taste.
Water hardness defines the lime content of water. It is indicated in degrees of German hardness (°dH).
Water hardness which exceeds 7°dH to 8°dH is best. If the water is not hard enough the flavouring will
not have sufficient aroma carriers. The result: the coffee will taste bland.
If the water is too hard, it would be advisable to use the AquaPrima water filter. This filter optimises the
pH level and the water hardness.
lThe AquaPrima water filter may only be used for treating fresh tap water.
The machine can, however, also be operated without a filter. See Water filter on page 14 for
programming the water filter.
9.1 Operating principle
The AquaPrima water filter takes effect in a number of ways:
the charcoal (activated carbon) reduces the occurrence of substances that have a detrimental effect on
the smell and the taste of water.
The ion exchanger resin binds heavy metals, reduces the level of limestone and removes other
pollutants.
A special, porous filter retains minute particles from the water.
The level of water hardness is reduced by 10°dH. The
AquaPrima is yielding and is sufficient for 60 litres or for
approx. 750 portions of coffee. It is food-safe and
environmentally-friendly.
A filter is included with the machine. Replacement filters can
be ordered through customer service.
1 The activated carbon removes the smell of water and
unpleasant substances such as chlorine. Silver-plating
the activated carbon prevents microbes from multi-
plying.
2 The ion exchanger reduces the limestone and removes
heavy metals and other substances.
3 A special, porous filter retains undesired micro particles.
4 The filter retains the dissolved substances.

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If the machine is operated with the AquaPrima water filter, the “water filter – ON“ setting should be
activated in the user settings.
This means that only every second cycle of the water flow-through metre is registered as an impulse, so
that the machine only needs to be descaled half as frequently. It is important that the device does not
register whether the water filter has actually been installed; it is the user settings that are decisive. If the
machine is operated without a filter it is essential that the water filter setting be set at “OFF“ .
9.2 Inserting the AquaPrima water filter
1. Switch off the appliance.
1. After removing the filter from the packaging, set the date on the
display at the current month.
2. Open the control panel by pressing on the bar handle and then
remove the water tank.
3. Insert the water filter according to the instructions in the package.
4. Fill in a max. of 1.7l tap water.
5. Replace the water tank.
AquaPrima
ON
AquaPrima
OFF
360° 360°360° 360°
(1 turn) (1 turn) (1 turn) (1 turn)
(1 impulse)

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10. Accessing individual components
Grinder
motor
Pump
Steam boiler
Excess pressure
Power module
Micro fuses
Coffee water
Valve
Safety fuse
Excessive
boiler
safety fuse
temperature
valve
ZThe brewing unit must be set at zero
before the brewing system is installed.
Service flap
Brewing unit
Drip tray
bolt on the salt box