Reparaturanleitung Kaffee-Espressovollautomat TK60

R
REEPPA
AIIR
R IIN
NSSTTR
RU
UC
CTTIIO
ON
N
Fully-automatic coffeemaker
4.10
Coffee outlet...................................................................... 40
4.11
Drip tray............................................................................. 42
4.12
Water filter......................................................................... 44
5
FUNCTIONS................................................45
5.1
The perfect espresso........................................................ 45
5.2
Operating principle........................................................... 45
5.3
Warming the cups............................................................. 45
5.4
Diaphragm regulator with blow-off valve ....................... 46
Switching on the appliance................................................ 5
5.5
Reduction angle with blow-off valve (alternative).......... 46
3.2
Controls ............................................................................... 6
5.6
Temperature...................................................................... 47
3.3
Preparation ........................................................................ 11
5.7
Overview of the symbols ................................................. 48
3.4
Changing the standard settings ...................................... 12
6
REPAIR .......................................................60
3.5
Cleaning............................................................................. 16
3.6
Descaling ........................................................................... 17
6.1
Replacing the brewing unit.............................................. 60
6.2
General disassembly........................................................ 64
4
COMPONENTS........................................... 21
6.3
Replacing the thermal fuse.............................................. 65
4.1
Structure ............................................................................ 21
6.4
Removing the coffee outlet.............................................. 67
4.2
Flowmeter .......................................................................... 22
6.5
Remedial actions for “Error 8” - message...................... 70
4.3
Heater and NTC-sensor .................................................... 23
7
FAULT DIAGNOSTICS ...............................73
4.4
Control module and appliance software ......................... 25
4.5
Service door ...................................................................... 26
7.1
Malfunctions ..................................................................... 73
4.6
Brewing unit ...................................................................... 27
7.2
System and error messages ............................................ 79
4.7
Gear unit ............................................................................ 33
7.3
Incoming goods inspection ............................................. 85
4.8
Ceramic valve (2-way valve)............................................. 37
7.4
Service diagnosis ............................................................. 86
4.9
Hot water / steam nozzle .................................................. 39
7.5
Troubleshooting ............................................................... 92
7.6
Measuring the coffee temperature .................................. 98
1
SAFETY ........................................................ 3
1.1
Safety instructions.............................................................. 3
1.2
Repair instructions ............................................................. 3
2
INSTALLATION ............................................ 4
2.1
Installation ........................................................................... 4
2.2
Scope of delivery ................................................................ 4
3
OPERATION ................................................. 5
3.1
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8
TECHNICAL SPECIFICATIONS ................ 99
8.1
Rating plate ....................................................................... 99
8.2
Power ............................................................................... 100
8.3
Temperatures .................................................................. 100
8.4
Dimensions and weight .................................................. 101
8.5
Filling amounts ............................................................... 101
8.6
Components .................................................................... 102
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1
SAFETY
1.1
Safety instructions
1.2
Danger!
Repair instructions
Caution!
►
Repairs may be carried out by a qualified electrician only!
►
NEVER attempt repairs by randomly replacing components!
►
The user may be put at considerable risk and injured by
improper repairs!
►
ALWAYS proceed systematically and comply with the
technical documentation for the appliance!
►
Components become hot during operation. Before
commencing repairs, leave the appliance to cool down.
►
As a rule, printed-circuit boards are not repaired but are
completely replaced with original spare parts. Exceptions are
documented separately.
►
Electric shock may occur if live components are touched
inside the appliance!
►
Do not touch components in the appliance. Even the modules
can be live!
►
Before commencing repairs, ALWAYS
appliance from the power supply!
►
If tests have to be conducted while the appliance is live,
ALWAYS use a residual-current-operated circuit-breaker!
►
The protective conductor connection must not exceed the
standardised values! This is essential for personal safety and
appliance function!
►
When repairs are complete, perform a test in accordance with
VDE 0701 or the corresponding national regulations!
►
Following each repair, conduct a leak and performance test.
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disconnect
the
Risk of scalding!
Hot water / steam nozzle or auto-cappuccinatore frothing-up
nozzle (optional) become very hot. Take hold of the nozzles
by the plastic parts only, not by the metal parts. Keep body
parts away from the nozzles and do not aim it to yourself or
anyone else.
When steam or hot water is released, the nozzles may initially
sputter!
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2
INSTALLATION
2.1
Installation
2.2
►
The installation location must be level and dry.
All appliances are supplied with the “Welcome pack” starter kit.
►
Protect the appliance from splash water.
►
There must be a minimum filling height of 420 mm.
►
Connect and operate the appliance only in accordance with
the specifications on the rating plate.
The “Welcome pack” starter kit contains the parts required to start up
the appliance:
►
Operate the appliance indoors and at room temperature only.
►
2 Cleaning-tablets
►
Do not place the appliance on a hot surface (e.g. heating
plate) and never use it close to an open flame.
►
Test strip for determining the local water hardness
►
2 Descaler-tablets (for 1 descaling process)
►
Scoop and screw-in aid for water filter (depending on model)
►
Operating instructions in different languages as well as a
quick reference guide
2.2.1
Scope of delivery
Welcome pack
Information on cleaning the appropriate milk-frothing aids (steam
nozzle or auto-cappuccinatore) is also enclosed.
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3
OPERATION
3.1
Switching on the appliance
The appliance conducts a selftest, heats up and rinses.
► Heating
up
temperature
Risk of damage!
WARNING
Do not use coffee beans which have been glazed,
caramelised or treated with other additives containing
sugar. These will damage the grinding unit!
► Pull the mains plug out of the cord store at the rear
of the appliance and connect according to the
specifications on the rating plate.
► Remove the water tank and fill with fresh, cold
water. Observe the “max” mark. Re-attach the
water tank.
► Fill the bean container with fresh coffee beans.
Preferably use espresso beans or bean mixtures
for fully automatic machines.
standby
► Moving the brewing unit to the
upper end position
Pump starts, 50 ml of water are
conveyed through the coffee
outlet.
Note:
When the appliance is used for the first time or if the
appliance has not been used for a prolonged period, the
first cup of coffee still does not have the full aroma and
should therefore not be drunk.
to
The system is rinsed and heated up.
► Brewing unit returns to basic position
The appliance is ready to use when the illuminated rings around the
standby button and the coffee dispensing button are lit green and a
coffee symbol is displayed.
3.1.1
Filling the pipe-system
If the appliance is completely drained and steamed out, the water
line system must be filled when the appliance is switched on for the
first time:
Rinse symbol lights up.
►
Press the coffee
dispensing buton
► Set mains switch at the back of the appliance to I.
► Set function selector to coffee brewing process.
► Press Standby button.
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3.2
Controls
3.2.1
Mains switch
3.2.2
The mains switch on the rear of
the appliance switches the power
supply on or off.
When the mains switch is switched
on, the illuminated ring on the
standby button lights up green.
The appliance is in stand-by mode.
If the appliance is isolated from the
mains with the mains switch, the
next time the appliance is switched
on, a self-test is run and the
brewing module is re-initialised.
Standby button
The Stand-by button switches on and starts the
appliance or switches it from brewing mode to stand-by.
When the standby button has been pressed, the
appliance heats up and is then rinsed. The illuminated
ring around the button flashes during this process.
During the coffee brewing process the standby button is
assigned a Stop function. Press this button to end the
current brewing process at any time.
3.2.2.1
Switching on a cold appliance:
When the standby button has been pressed, the
appliance heats up and is then rinsed. The illuminated
ring around this button flashes. Coffee cannot be
brewed until the illuminated ring stops flashing.
Warning:
3.2.2.2
Do not actuate the mains switch during the brewing
process. When the appliance is switched on again,
malfunctions and damage may occur.
The illuminated ring around the standby button is lit
constantly. Coffee can be brewed.
Do not switch off the appliance with the mains switch
until the appliance has been switched to stand-by
mode with the standby button.
3.2.2.3
►
Switching on a warm appliance:
The appliance is not rinsed if:
it was still warm when switched on
or
►
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there was no coffee from the last brew before
the appliance was switched off.
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3.2.3
Function selector
3.2.4
Coffee dispensing button
►
Risk of scalding!
When steam or hot water is released, the nozzles
may initially sputter!
DANGER
During the brewing process the green illuminated ring
flashes.
►
Rotate the function selector to
draw coffee, hot water or steam:
1. Drawing hot water –
via hot water/ steam pipe.
Press the coffee dispensing button to start the
coffee brewing process.
If the coffee dispensing button is pressed again,
the coffee brewing process ends early.
(The grinding process is ended, the brewing process is
stopped, and the brewing unit is emptied.)
Ready to use mode is indicated by the illuminated ring
which is lit constantly.
2. Drawing coffee –
via brewing unit to the coffee
outlet.
3. Drawing steam –
via hot water/ steam pipe.
Steam can be drawn after the
appliance has heated up to steam
temperature.
After steam has been drawn,
coffee can be brewed again
immediately.
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3.2.5
Filling quantity selector
3.2.6
This rotary knob is used to select the amount of liquid which is
required.
Coffee strength selector
The amount of coffee to be ground can be changed by rotating the
coffee strength selector.
This setting affects the aroma and flavour, the caffeine and acid
content as well as the formation of the crema.
Single cups
Double cups
Amount of coffee powder can be selected between “very mild” 7 g and
“extra strong” 14 g.
Small espresso
approx. 25ml
2 small espresso
approx. 50ml
Espresso
approx. 40ml
2 espresso
approx. 80ml
very mild
approx. 7 g
Small coffee
approx. 80ml
2 small coffees
approx. 160ml
mild
approx. 8 g
Coffee
approx. 125ml
2 coffees
approx. 250ml
normal
approx. 9 g
Large coffee
approx. 160ml
2 large coffees
approx. 300ml
normal plus
approx. 10 g
XXL coffee
approx. 220ml
2 XXL coffees
approx. 360ml
strong
approx. 12 g
extra strong
approx. 14 g
Note:
The permitted filling quantity tolerance is +/– 5 ml.
The filling quantities for 2 large coffees and 2 XXL
coffees are not the same as the double filling quantity for
corresponding single cups. Therefore aromatic coffee can
still be brewed even when there is the maximum amount
of liquid selected.
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The amount of ground coffee powder is monitored in the brewing unit
and corrected by compensation of the grinding unit running time.
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3.2.7
Cleaning button
3.2.8
Descaling button
When the red illuminated ring lights up around the
cleaning button clean, the appliance must be cleaned.
When the red illuminated ring lights up around the
descaling button calc, the appliance must be descaled.
Coffee can still be brewed.
Coffee can still be brewed.
To start the cleaning cycle, press the clean button for
approx. 3 sec.
To start the descaling cycle, press the calc button for
approx. 3 sec.
►
►
Use cleaning tablets Mat.-no. 31 0575!
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Use liquid descaling agent Mat.-no. 31 0451!
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3.2.9
3.2.9.1
Adjusting the grinding unit
Dependent on the roasting degree and on the oil rate of the used
coffee beans the grinder setting must be changed
Service-Sticker
To make sure that the grinding unit will be adjusted correctly a sticker
is added on the right cover of the appliance.
►
Bright roasting, low oil rate - adjust finer
►
Dark roasting, high oil rate - adjust more coarsely
The correct grinding unit adjustment is crucial for the coffee taste, the
strength and the flavour of the coffee.
Note:
A very fine grinding unit setting in combination with a
very high amount of ground coffee can cause
malfunctions especially by using dark roasted coffee
beans with high oil rate.
Risk of damage:
Adjust the grinding unit only while the grinding
unit is running! Otherwise the appliance may be
damaged.
►
Open right cover of the
appliance.
►
Press the coffee dispensing
button to start a brewing
cycle.
►
While the grinding unit is
running, turn the knob to
select the degree of grinding:
The smaller the dots the finer the
ground coffee.
The new setting will not become apparent until the second or third cup
of coffee.
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3.3
Preparation
3.3.2
Using preground coffee
General: Prewarm cups on the cup shelf or fill with hot water and
rinse out.
3.3.1
Using coffee beans
This coffee machine grinds fresh coffee beans for each brewing
process.
Risk of damage!
Do not add whole coffee beans or instant coffee!
Add a maximum two scoops of pre-ground coffee.
WARNING
A second type of coffee can be used. Pre-ground coffee can be filled
into the brewing unit via the coffee duct.
►
Turn function selector to coffee position.
►
Select the desired amount of coffee and numbers of cups with
the rotary knob.
► Open the right cover of the
appliance.
►
Select the preferred coffee strength with rotary knob.
►
Place a cup under the outlet. If required adjust the height of
the outlet.
► Open ground coffee duct flap
(A).
►
Press the coffee dispensing button. The brewing cycle runs
automatically.
Note:
If ADD BEANS is displayed despite a full beans
container, the grinding unit might be empty and must still
be filled up with ground coffee.
Therefore press the coffee dispensing button again to
make sure that there is enough ground coffee filled in
the brewing unit.
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► Add one or two level scoops of
medium-fine ground coffee to
the ground coffee duct.
► Close the ground coffee duct
flap and the right cover of the
appliance.
► Press the coffee dispensing
button.
If coffee is not brewed within 90 seconds, the brewing chamber is
emptied automatically in order to prevent overfilling. The appliance is
rinsed.
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3.4
Changing the standard settings
3.4.1
Setting the water hardness
The appliance has been set at the factory so that coffee can be
brewed without any additional programming.
It is important for the descaling programme that the
water hardness is set correctly. If external water
softeners are used in the domestic water system or if
filtered water is used, select water hardness 1
The following settings can be changed:
►
Water hardness
►
Water filter
Water hardness 4 is preset
► Determine the water hardness with the enclosed test strip or ask
your local water supplier.
Test strip for determining the water hardness, mat. no.: 05 6317
3.4.1.1
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Hardness 1
Descale alarm after 220 litres
Hardness 2
Descale alarm after 100 litres
Hardness 3
Descale alarm after 70 litres
Hardness 4
Descale alarm after 40 litres
Degrees of water hardness
Setting
German
French
1
1–7
1 - 13
2
8 – 15
14 - 27
3
16 – 23
28 – 42
4
24 – 30
43 - 54
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3.4.1.2
Change setting
The appliance must be in stand-by mode. Only the illuminated ring
around the stand-by button is lit.
► Press calc descaling button until the illuminated rings for the
desired water hardness light up.
► Simultaneously press and hold down the calc and clean buttons
for at least 3 sec.
If the illuminated ring around the cafe button flashes, the filter can be
set.
► Press cafe button once.
The selected water hardness is saved.
The display changes to:
Note:
The appliance now switches on automatically.
The number of the illuminated
rings around the control buttons
symbolise the selected water
hardness.
Hardness 1
Hardness 2
As soon as the illuminated rings around the stand-by
and cafe buttons as well as the coffee cup sign in the
display are lit, the appliance is ready for use again.
Hardness 3
Hardness 4
If you do not press the calc descaling button for 90 seconds, the
appliance returns to coffee dispensing mode without saving any
settings.
The previously set water hardness is retained.
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3.4.2
Water filter
3.4.2.1
Inserting the water filter
A water filter available as an accessory (mat. no.: 46 1732) can be
inserted in the water tank.
►
The appliance must be in
stand-by mode.
When approx. 50 l of water have run through (corresponds to approx.
400 brews) or after 2 months at the latest, the effect of the filter is
depleted. The filter must then be replaced. (Risk of bacteria!)
►
Place a vessel with a
capacity of at least 500 ml
under the hot water nozzle.
Insert filter into the water tank, then change the appliance settings
according to instructions enclosed with the filter.
►
Insert the water filter
according to instructions
enclosed with the filter.
Note:
►
Do not insert the filter if the red illuminated ring
around the calc button on the appliance is lit.
The appliance must be descaled first.
►
Before descaling the appliance, take
inserted water filter out of the water tank.
►
If softened water from a domestic softening
system is used, a water filter is not required.
►
If the change filter system message is
displayed, immediately replace or remove used
water filters. If no new water filter is inserted,
adjust the water hardness.
the
To activate the filter and ensure correct function, the
inserted filter must be rinsed. Observe the following
points.
►
Simultaneously hold down the calc and clean buttons for at
least 3 sec.
The display changes to:
►
Keep pressing the calc button until the filter symbol lights up.
►
Acknowledge by pressing the cafe button.
►
Rotate function selector to draw hot water.
The appliance rinses the filter automatically. Water is conveyed into
the collecting vessel (approx. 2 minutes). The water may be a little
cloudy, do not drink it!
►
If the turn on coffee system message is displayed, turn
function selector back to brew coffee.
The appliance is ready for use again.
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3.4.2.2
Changing the water filter
3.4.2.3
►
Switch the appliance
stand-by mode.
►
Place a vessel with a
capacity of at least 500 ml
under the hot water nozzle.
►
Using the screwing aid,
unscrew the water filter in
an anti-clockwise direction.
to
Removing the water filter
► Switch the appliance to stand-by mode.
► Using the screwing aid, unscrew the water filter in an anticlockwise direction.
► Simultaneously hold down the calc and clean buttons for at least 3
sec.
► Press calc descaling button until the illuminated rings for the
desired water hardness light up. (The number of the illuminated
rings around the control buttons symbolise the selected water
hardness).
►
Screw in a new water filter.
►
Simultaneously hold down the calc and clean buttons for at
least 3 sec.
► Acknowledge by pressing the cafe button.
►
Acknowledge by pressing the cafe button.
The appliance is ready for use again.
►
Rotate function selector to draw hot water.
The appliance rinses the filter automatically. Water is conveyed into
the collecting vessel (approx. 2 minutes). The water may be a little
cloudy, do not drink it!
►
If the turn on coffee system message is displayed, turn
function selector back to brew coffee.
The appliance is ready for use again.
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3.5
Cleaning
Risk of electric shock
► Before cleaning the appliance, pull out the mains
plug!
► Never immerse the appliance in water!
DANGER
► Do not use a steam cleaner!
Risk of damage!
► Do not use any scouring agents!
WARNING
3.5.1
Daily cleaning of the appliance
►
Wipe the outside of the appliance with a damp cloth.
►
Remove water tank, rinse out and fill with fresh water.
►
Pull drip tray forwards and remove. Empty drip tray (1) and
dregs drawer (2) and clean with mild detergent solution.
Only dregs drawer (2) can be cleaned in the dishwasher!
►
Thoroughly clean drawer contacts (3) on all sides and dry.
Note!
Coffee or water residue between the drawer contacts
may result in error messages.
►
Extract or wipe out the appliance interior.
If the appliance is cold when switched on, the appliance is rinsed
automatically.
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3.6
Descaling
The lime content in drinking water causes calcification of the thermal
block, the hose system and the valves in the appliance. This affects
the flavour of the coffee and reduces the service life of the appliance.
3.6.1
Descaling alarm
The correct setting of the water hardness is important for the
descaling indicator.
Test strip for determining the water hardness, mat. no.: 05 6317
To ensure optimum quality, descale the appliance regularly.
Hardness 1
220 litres
Hardness 2
100 litres
Hardness 3
70 litres
Hardness 4
40 litres
If water hardness 1 is set, the request to descale the appliance is
indicated after 220 l of water. (1° – 7° dH)
If the illuminated ring around the calc descaling button
lights up red when the appliance is switched on and
the request to descale the appliance is indicated on the
display, the appliance must be descaled immediately.
If water hardness 2 is set, the request to descale the appliance is
indicated after 100 l of water. (8° – 15° dH)
If water hardness 3 is set, the request to descale the appliance is
indicated after 70 l of water. (16° – 23° dH)
If water hardness 4 is set, the request to descale the appliance is
indicated after 40 l of water. (24° – 30° dH)
Descale the appliance according to the following instructions,
otherwise the appliance may be damaged.
► Never descale the appliance with vinegar or
vinegar-based substances.
WARNING
3.6.1.1
Degrees of water hardness
Setting
German
French
► Do not interrupt the descaling programme.
1
1–7
1–13
► Never drink the liquid.
2
8–15
14–27
3
16–23
28–42
4
24–30
43–54
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3.6.2
Descaling programme
Warning!
Never descale with water filter inserted!
The descaling programme starts only if the FILTER
programming is not active.
3.
►
The descaling programme lasts
approx. 35 minutes. While the descaling programme is running, processes and handling modes are
displayed.
Starting the descaling programme
1.
►
►
2.
This display is indicated irrespective
of the actual filling of the trays and
ensures that the descaling cycle is
not interrupted.
4.
5.
►
Place an appropriately large
collecting vessel under the
steam nozzle.
►
Rotate function selector to
draw hot water.
The illuminated ring around the calc
descaling button flashes.
The
appliance
is
descaled
automatically. Descaling solution
(approx. 250 ml) is conveyed in
intervals into the collecting vessel.
►
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Fill water tank with 0.5 l of
ready
mixed
descaling
solution.
If using descaling tablets, add two tablets. Observe the
dissolving time of the tablets (approx. 4–6 minutes)!
To start the descaling
programme, hold down the
calc button for at least 3
seconds.
Pull drip tray out of the
appliance. Empty and reinsert drip tray and dregs
drawer.
Fill water tank up to the
mark (0.5 l) with warm
water and add descaling
agent
or
Take the filter out of the water tank
and set the water hardness.
3.6.2.1
►
Wait for the next display.
(approx. 10 minutes)
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3.6.2.2
Descaling programme
6.
►
Rotate function selector to
coffee brewing process.
9.
The
appliance
is
descaled
automatically. Descaling solution
(approx. 250 ml) is conveyed in
intervals into the drip tray via the
drainage valve.
7.
8.
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In doing so, the water tank is
completely drained.
►
Wait for the next display
(approx. 10 minutes)
►
Pull drip tray out of the
appliance, empty and reinsert.
10.
►
Remove water tank, rinse
out, fill with fresh water and
re-insert.
►
Empty collecting vessel and
place back under the steam
nozzle.
►
Rotate function selector to
draw hot water.
The appliance is rinsed automatically. Water (approx. 150 ml) is
conveyed in intervals into the
collecting vessel.
11.
Wait for the next display. (approx.
4 minutes)
►
Rotate function selector to
coffee brewing process.
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3.6.2.3
Descaling programme
12.
13.
3.6.2.4
The appliance is rinsed automatically. Water (approx. 300 ml) is
conveyed in intervals into the drip
tray via the drainage valve.
►
Wait for the next display.
(approx. 4 minutes)
►
Pull drip tray out of the
appliance and empty.
►
Carefully clean contacts of
the drip tray on all sides
and dry.
Ensure that there is no ground
coffee residue or water droplets
between the tray contacts.
►
14.
The descaling programme does not start:
Re-insert drip
dregs drawer.
The appliance
matically.
is
tray
rinsed
and
The descaling programme starts only
if the FILTER programming is not
active.
►
Take the filter out of the water
tank and set the water
hardness.
WARNING!
Never descale the appliance with the filter inserted!
The descaling programme does not
start if the temperature of the heater is
too high.
Symbol flashes 5 x.
auto-
The descaling process is complete.
The illuminated ring around the
calc descaling button goes out.
The appliance is ready for use
again.
►
Cool down the system by
drawing off approx. 1 cup of
hot water.
When the required temperature has
been reached, the descaling process
can be started.
If the descaling process is terminated prematurely, the descaling
alarm is not cancelled.
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4
COMPONENTS
4.1
Structure
4.1.1
Overview, left side
1
Mains suppression filter
2
Diaphragm controller (pressure controller)
3
Mains transformer
4
Flowmeter
5
Pump
6
Watertank valve support
7
Gear unit
8
Power electronics module
9
Control electronics module
10
Heating element
11
Service plug
Note:
From production date FD8701 on:
►
Implementation of a second thermal fuse on
heater.
►
Drip tray monitoring
microswitch.
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by
an
additional
Seite 21 von 102
4.2
4.2.1
Flowmeter
The composition of the coffee
mixture is a well guarded secret of
the
coffee
roasting
establishments. To ensure that an
excellent coffee can be produced
from this secret, the coffee beans
must be roasted carefully and the
coffee
machine
controlled
precisely – unless the dosage is
constant, the quality of the coffee
cannot be maintained.
The flowmeter (A) is installed on the suction side between the water
tank (B) and pump (C). To ensure a precise measurement result, the
flowmeter must be operated in a horizontal position.
Design and function
Water is pumped in from the water
tank and flows through the
flowmeter.
Water is supplied via the
connection pipe in the lower
section of the housing (D).
Water is discharged via the
connection pipe in the upper
section of the housing (A).
The two halves of the housing are
sealed with a silicone seal (B).
The fan impeller (C) with the two
attached magnets is rotated by the
water flow.
The Hall-IC in the upper section of
the housing (A) generates square
pulses which measure the actually
required amount of water.
When installing the flowmeter, ensure that the
direction of flow is correct. An arrow on the
flowmeter housing indicates the direction of flow.
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4.2.2
Connection diagram
4.3
Heater and NTC-sensor
4.3.1
Heater (Instantaneous water heater)
In the instantaneous water heater the water for coffee production or
hot water/steam purchase is heated up.
The flowmeter itself does not supply an output voltage but simply
switches the signal connection to 0 volt earth (actuated) or leaves it
open (unactuated). Square pulses are generated in the upper
section of the housing via the Hall-IC.
Wrong connection of + voltage, signal and earth destroys the
flowmeter.
Prevent inductive faults via the cable!
Do not lay the cable together with supply cables to
consumers.
Therefore the water is pumped in a stainless-steel pipe (A), which is
cast in together with a heating resistor (B) in an aluminum block.
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4.3.2
Characteristic of NTC-sensor
Temperature
R min
R nom
R max
25 °C
9,78k
10,00K
10,22k
95 °C
0,77k
0,78k
0,80k
140 °C
0,232k
0,234k
0,237k
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4.4
Control module and appliance software
The appliance is controlled by the control module.
The control modules are differentiated by the respective appliance
software and by the housing designs. The software versions within
one CSI are usually compatible. Thanks to continuous improvements,
new software masks are programmed, remove the older versions.
The appliance software on the control module cannot be updated for
the service.
4.4.1
CSI 01
Overview of software mask version
Version
Mask 2
Mask 3
Change
Switch-off time changed from 4 to 3 hours
According to tank sensor coffee quantity from 100ml to 200ml can be drawn
Mask 5
Temperature from value 1(High) to value 2(Maximum)
Position detection new cam disc ceramic valve
CSI 02
Error message Fault 8 repaired (introduction approx. 8312)
Auto OFF function product selector corrected in intermediate position
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4.5
Service door
The service door on the right side of the appliance provides access to
the brewing unit.
4.5.1
Door lock
The service door, behind the brewing unit is installed, is locked with a
bar.
Open the door by rotating the locking knob in a clockwise direction.
To ensure that the door is not opened without authorisation, e.g. with
a coin, the locking knob features an additional crosspiece (A). Open
the service door with a screwdriver PB 169/6 M4.
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4.6
Brewing unit
The brewing unit extracts the aroma, flavour and bitter agents from the
ground coffee and forms the crema.
4.6.1
Operating principle
Ground coffee pours through the filling shaft (A) into the brewing
chamber and is compressed. Hot water is introduced under pressure
via the water supply (B) and forced through the ground coffee. The
coffee which is produced is conveyed to the coffee outlet (C). To
optimise crema formation, the crema valve, which is situated above
the brewing head, opens when the pressure reaches 4.5 bar.
The brewing unit forms the central element in the espresso machine.
At the end of the brewing process the used coffee dregs are emptied
into the dregs drawer via the discharge chute (D).
4.6.1.1
Variable brewing chamber
The brewing unit consists primarily of the brewing chamber (A), into
which the ground coffee (7 g–14 g) is metered, and the springmounted brewing head (B) which moves upwards to seal the brewing
chamber.
.
The ground coffee is compacted and compressed in the brewing
chamber. When hot water is pumped into the brewing chamber, the
rising water pressure pushes up the brewing head, increasing the
volume in the brewing chamber. This improves extraction of the
flavours and formation of the crema.
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4.6.2
4.6.2.1
Sequence of the brewing cycle
Grinding and metering
Coffee beans are ground in the grinding unit (A). The ground coffee is
conveyed into the open brewing chamber via the funnel (B). The
amount of ground coffee generated depends on the running time of
the grinding unit. The brewing unit can process from 7 g to 14 g of
ground coffee.
Alternatively ground coffee can be poured in via the powder slot.
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4.6.2.2
Compression
The grinding unit stops. The gears control the brewing unit to the
upper end position. In doing so, the ground coffee is compressed in
the brewing chamber (C). The pressure applied to the ground coffee
causes the spring-mounted brewing head (D) to move up. The more
powder there is in the brewing chamber, the higher the brewing head
is pushed upwards during compression. The actual amount of powder
is measured by a slide which is connected mechanically to the
brewing head and, if required, corrects the amount during the next
brewing process.
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4.6.2.3
Brewing
The brewing process starts. The pressure pump conveys the water
into the brewing unit. The brewing head (D) is moved up by the water
pressure, thereby increasing the volume in the brewing chamber. The
hot water is mixed with the ground coffee longer and more intensively,
thereby improving extraction of the flavours and formation of the
crema. If the pressure inside the brewing chamber increases above
4.5 bar, the crema valve (E) opens and the coffee can flow to the
coffee outlet (F).
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4.6.2.4
Emptying
When the programmed amount of water is reached, the pump stops.
The pressure in the brewing chamber drops and the coffee dregs are
compressed into a solid cake. The drainage valve opens, pressure
and residual water are released into the drip tray. When the brewing
unit descends, the brewing chamber moves back to the initial position
(G) and the coffee dregs are emptied into the dregs drawer.
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4.6.3
Compensation of the grinding unit running time
The amount of ground coffee which is generated by the grinding unit
depends on the running time of the grinding unit.
To ensure that the required amount of coffee is always ground, both
with different types of coffee, at different grinding settings and possibly
with worn grinding tools, the amount of ground coffee which was
actually conveyed to the brewing module (B) is measured.
The more powder there is in the brewing chamber, the higher the
spring-mounted brewing head is pushed upwards during compression.
A microswitch (µ) closes and opens as it moves past via a slide which
is connected mechanically to the brewing head.
The electronics module measures the number of the voltage changes
(connection A) caused by the switching processes which occur
immediately before the pressure pump switches on and can therefore
detect whether and how much ground coffee has been metered. This
value can be compared with the nominal value for the aroma setting.
Differences are adjusted by changing the running times of the grinding
unit.
4.6.3.1
Switching states
If there is a minimum amount of coffee (<7 g), the brewing head
does not move. The switch is not actuated. = Not enough coffee
beans.
ADD BEANS is displayed
Amount of powder >7 g – <10 g
(I)
Amount of powder 10 g
(II)
Amount of powder >10 g – <14 g
(III)
(IV) Amount of powder >14 g = Too many coffee beans. The
running time of the grinding unit must be reduced.
Special cases:
Too hot and too little Brewing is ended (dry discharge), there
powder before brewing
is no pumping. The brewing module
moves to the grinding position. Auto
cooling starts (several ml of water are
conveyed) and SYSTEM TOO HOT is
displayed
Too little powder during ADD BEANS is displayed and an
1st brewing process
additional time of 1.3 sec. is given.
Compensation is not active during this
and the next brewing process.
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4.6.4
Reinforced brewing unit
New, reinforced brewing units will be used from production date
FD8307.
4.6.4.1
Stripping-off clip
To improve functional safety, a stripping-off clip (B) was fitted to the
brewing unit (A).
Changes to components result in a higher pressure resistance in the
complete brewing unit as well as improved functional safety of the
entire machine.
Externally the new, reinforced brewing units can be identified by the
longer discharge chute on the brewing chamber.
(A)
Short discharge chute
= previous brewing unit
(B)
Long discharge chute
= new, reinforced brewing unit
This stripping-off clip is attached to the discharge chute on the
brewing chamber and moves closely past the brewing head (C) during
each brewing cycle. Coffee dregs which stick to the brewing head are
therefore removed mechanically.
Faults in the brewing cycle and during initialisation of the brewing unit
due to overdosage are therefore avoided.
Note: The control lever is a component of the brewing unit and is not
available separately. All current replacement brewing units feature this
new lever.
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4.6.4.2
Control lever
To improve functional safety, an additional rib (A) was fitted to the
control lever of the brewing unit.
A cleaning tablet which was inserted at the wrong time and did not fall
into the brewing chamber could become jammed near the control
lever of the brewing unit. This resulted in a blockage of the brewing
unit and error messages.
The additionally attached rib (A) prevents cleaning tablets from
sticking in this location and causing damage.
Note:
The control lever is a component of the brewing unit and
is not available separately. All current replacement
brewing units feature this new lever.
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4.7
Gear unit
Note: From production date FD8701 on the drip tray
is monitored by an additional microswitch in the
appliance. If the drip tray is pulled out, the microswitch
opens and interrupts the power supply to the gear motor
via the power module.
The gear unit is the drive for the brewing unit.
The gear motor is actuated at +/– 16 V DC and transfers its power via
gears to a drive shaft which is connected to the brewing unit.
4.7.1
Front housing
Microswitches (S1 and S2) are attached to the front housing of the
gear unit. These microswitches measure the position of the gears and
the brewing unit via a cam (B) connected to the drive shaft.
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4.7.2
Rear housing
On the rear housing section of the gear unit the drainage valve (B) is
attached to the expansion chamber (C). This valve controls the
passage of water from and to the brewing unit. The microswitch (D) is
actuated by the lock on the brewing unit. The drive shaft (E) is the
connection to the brewing unit.
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4.7.3
Cam on the gear unit
The position of the brewing unit is detected with two microswitches S1
and S2. These two switches are able to define three positions.
When the appliance is switched on, the switch status of the
microswitches is checked and transmitted to the control module. The
brewing unit is moved to the basic position (= initialising).
Brewing position
Home position
The brewing unit
is in the grinding
position and can
be filled.
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Once the brewing
process is complete,
the
system
is
drained.
The transmission
turns
clockwise
until switch S2 is
closed by switch
cam
(A)
and
switch S1 is open.
Switch S1 is
activated
by
switch cam (A).
Switch
S2
remains open.
S1 ON
S2 OFF
Drainage position
For this, the motor
turns the cam disc
back by about 8°, so
that the drainage
valve
is
opened
again
and
the
remaining water can
run into the drip tray.
The brewing unit
is in the brew
position.
The
transmission
motor
stops.
Water can be
supplied
and
coffee can be
brewed.
S1 OFF
S2 ON
Switches S1 and S2
are closed.
S1 ON
S2 ON
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4.7.4
Drainage valve
The drainage valve (B) connects the water inlet (A) to the brewing unit
and drains the system at the end of the brewing cycle.
4.7.4.1
Home position
When the gears are in the home position, the drainage valve is open.
The cam (E) of the actuator must then be in the illustrated position.
Warning!
Malfunction
The position of the actuator and therefore the cam (E)
is not specified permanently on the drive shaft.
The actuator may be in the wrong position. The
function sequence may malfunction.
When installing the gears, ensure that actuator is
in the correct position, as indicated under “Home
position”!
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4.7.4.2
Brewing position
4.7.4.3
Drainage position
When the gears move into the brewing position, the drive shaft rotates
with the actuator (D) in an anti-clockwise direction.
Once the brewing process is complete, the water pump switches off.
The brewing unit is moved upwards. The connection to the drainage
valve is closed with the water
The transmission motor turns the input shaft with tripping device (D)
back through about 8° and opens the drainage valve.
coupling in the brewing unit. The switch cam on tripping device (D)
reaches into the drainage valve control line and closes it. Water can
flow from inlet (A) through drainage valve (B) to outlet (C).
The pressure is relieved and the water can drain into the expansion
chamber and then into the drip tray. To prevent underpressure, air can
flow back through valve (B).
Then the transmission turns back in a clockwise direction until it is in
the basic position again.
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4.8
Ceramic valve (2-way valve)
By rotating the function selector on the front of the control panel, the
drawing of hot water (1), coffee (2) or steam (3) can be selected on
the ceramic valve.
4.8.1
Switch matrix
The microswitches S1 and S2 control the heater and pump via the
logic board. The microswitches are actuated by rotating the cam.
Two ceramic wheels which rotate against each other convey the hot
water or the steam to the hose connections for the drainage valve or
the steam pipe.
(A) Heating inlet
(C) To the drainage valve (brewing module)
(D) To the steam pipe (drawing hot water and steam)
4.8.1.1
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Switch positions:
Steam:
S1 open
S2 closed
Coffee:
S1 closed
S2 open
Hot water:
S1 closed
S2 closed
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4.8.2
Water flow
The rotatable ceramic wheel releases the water or steam passage.
The corresponding openings in the lower wheel are connected to each
other via indentations in the upper wheel.
(A) Inlet
(B) Outlet to the steam pipe
(C) Outlet to the drainage valve (brewing module)
Drawing steam
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Drawing coffee
Drawing hot water
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4.9
Hot water / steam nozzle
Risk of burns!
The nozzle gets very hot.
► Do not touch the metal parts!
DANGER
(1) Sleeve with plastic grip
To dispense hot water or to froth
milk, move the sleeve downward
by the plastic grip.
To warm drinks with steam, slide
the sleeve upwards by the plastic
grip.
(2) Tip of nozzle with inlet
Sucks in milk and mixes with air
to make milk froth.
Note:
Every time you froth milk, clean the nozzle immediately
afterwards by dispensing hot water. Dried on milk
residues are difficult to remove.
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4.9.1
Function
The steam flows through steam pipe
(A) and the connected steam nozzle,
thereby
creating
underpressure
inside the steam nozzle.
This underpressure is balanced out
by fresh air flowing in through
opening (B) on the nozzle holder
and (C) on the tip of the nozzle.
If the nozzle is immersed in cold milk
to above side opening (C) and steam
is dispensed, fresh air flows in
through opening (B) on the nozzle
holder. At the same time, milk is
sucked into this air flow through
opening (C), mixed with the flow of
steam and emitted at the tip of the
steam nozzle.
The resulting circulation of sucked
in, mixed and emitted milk, warms
the milk up. The milk froth is created
by the mixing of the milk proteins
with air. The proteins are stable up
to approximately 76 °C.
They are destroyed by higher
temperatures and froth formation is
not possible then.
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4.10
Coffee outlet
The pump pressure conveys the brewed coffee from the brewing
unit to the coffee outlet.
The coffee runs into the coffee outlet (B) via a silicone hose (A). The
brewing system opens here and the coffee flows into the overflow
(C). The pressure escapes, the coffee flow abates and the ethereal
oils and fats dissolved in the coffee can froth up inside the coffee
outlet (D) and form the crema.
The coffee is distributed evenly from the overflow to the left and right
and then flows out through the outlet nozzles (E) into the cup.
Note:
► To ensure that the coffee flows out evenly from
the left and right, it is essential that the machine is
level.
► Soiling and deposits affect the coffee outlet.
Therefore, regularly run the automatic cleaning
cycle using the cleaning tablets (mat. no.
31 0575).
► Permitted quantity difference between the left and
right outlets must not be greater than +/- 15%.
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4.10.1 Coffee outlet with optimised overflow
An improved coffee outlet was introduced from production date
FD8606.
A newly introduced jug (1) in conjunction with changes to the
distributor (2) and to the distributor cover (3) ensure a more even
outlet with lower right – left tolerances.
The coffee outlet is available only as a complete, pre-assembled
spare part with or without chrome-plated outlet sleeves and replaces
the previous coffee outlet.
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4.11
Drip tray
4.11.1 Tray contacts
The tray contacts (A) detect whether
►
the drip tray has been inserted.
►
the drip tray has been filled with water.
If the drip tray has not been inserted, an electric circuit is opened.
TRAYS MISSING is displayed. When the drip tray has been inserted,
a tray contact closes the circuit. The appliance is ready for use again.
When the drip tray is full of water, the tray contacts (A) are inserted
into the water. The electrical resistance between the tray contacts
drops. EMPTY TRAYS is displayed.
If the EMPTY TRAYS display does not go out despite the trays having
been emptied, there may be residual water or moisture between the
contacts (transfer resistance caused by damp ground coffee).
Carefully clean trays in the area of the contacts with a soap solution
and then dry.
Note:
From production date FD8701 on the presence of the
drip tray is monitored by an additional microswitch in the
appliance actuated by a trigger on the drip tray. If the
drip tray is pulled out, the microswitch opens and
interrupts the power supply to the gear motor via the
power module.
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4.11.2 Detection springs
The drip tray features two tray contacts (A). When the drip tray is
pushed all the way into the appliance, the detection springs (B) catch
against the tray contacts from below.
Therefore the following states can be measured
►
Drip tray is missing and
►
Drip tray full of water
The detection springs are attached to a drawer which is accessible
when the rear panel of the appliance is opened.
4.11.2.1 Function:
Drip tray is missing: Detection springs 1 and 2 are not jumpered by
the tray contact I. The circuit is interrupted.
Drip tray inserted: Detection springs 1 and 2 are jumpered by the
tray contact I. The circuit is closed.
Drip tray is full of water: The tray contacts I and II are inserted into
the water. The electrical resistance between the tray contacts drops.
The circuit is closed via the detection springs 2 and 3.
Drip tray is empty: The tray contacts I and II are dry. The electrical
resistance between the tray contacts is infinite. The circuit between
the detection springs 2 and 3 is interrupted.
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4.12
Water filter
The filter cartridge is screwed directly into the water tank. The filter
cartridges can be used for all appliances belonging to this series.
Carbon hardness, contents (e.g. chlorine) which impair taste and
odour, heavy metals and other substances are reduced to protect the
machine. Important minerals and fluoride are retained.
4.12.1 Filtration when drawing water
The water required for the preparation of coffee is filtered directly
before use. The water is drawn in by fins in the lower area of the filter
cartridge, filtered by the granulate and conveyed out through the
centre of the water tank valve. (= Up flow principle)
4.12.2 Filter specifications
The filter capacity at 27° dH is approx. 50 litres (400 brews) or
2 months.
The filter filling consists of approx. 100 ml ion exchange resin and
silvered activated carbon in the ratio 4:1.
Filter diameter:
27–42 mm
175 mm
Filter length:
Filling volume:
Filter effect:
95–100 ml
Carbon
hardness
Chlorine
(Reduction if
following
substances
are in the
water)
up to
up to
up to
Lead
up to
Copper
Aluminium
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up to
Important!
►
Follow the information in the operating instructions
for inserting or replacing the water filter!
►
Do not insert filter if the descaling display lights up!
First descale the appliance!
►
If the appliance is always operated with the water
filter inserted, descale as a precaution once or twice
a year!
Seite 44 von 102
5.1
The perfect espresso
The sequences are monitored by sensors and microswitches. All
functions are controlled and interlinked via the logic module. All units,
such as motors, pump, heater, are supplied with power via the power
module.
A genuine espresso is prepared according to a specific extraction
process in which the water is forced under high pressure through
finely ground coffee in order to release all the flavours.
The excellent quality of the result in the cup depends on the
selection and composition of the raw coffee from different countries
of origin, the degree of roasting, the fineness of the grinding and the
extraction method: Applied pressure, water temperature and
extraction duration.
Service door
Steam pipe
Grinder
A perfect espresso can be identified by its distinctive taste, intensive
flavours and a dense body, refined by a crema of perfect consistency.
Brewing
unit
Extract. pos.
Operating principle
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Pump
Net
filter
Power
Water and coffee beans are kept ready in the storage containers for
the preparation of coffee. When the product has been selected, the
coffee grinder begins to grind the beans. Ground coffee is metered
into the brewing module. The coffee grinder stops after a time
allocated to the quantity. The brewing process begins when the
brewing module moves into the upper end position. When this
position has been reached, the water pump begins conveying water.
Water is drawn out of the tank via the flowmeter. The water flow
causes the fan impeller to rotate in the flowmeter, causing electrical
pulses to be generated. The running time of the pump is specified by
the number of the pulses. The pump conveys the water through the
heater at a pressure of 5–8 bar. Depending on the selected product
(coffee, hot water or steam), the water is heated up to a temperature
between 82 °C and 130 °C before it is fed either to the steam pipe
via the two-way valve or conveyed into the brewing module via the
drainage valve.
2-way
valve
Grinding correction
Reed switch
5.2
Ground coffee slot
Logic
FUNCTIONS
Tray
contact
5
Water tank
Heater
5.3
Warming the cups
The warm exhaust air from the coffee heater is used to warm the
cups. The air rises and flows through openings in the cup rack. There
is no active heating element for warming the cups.
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5.4
Diaphragm regulator with blow-off valve
5.5
Reduction angle with blow-off valve (alternative)
The water is drawn out of the water tank via the hose connection (A).
The water is drawn out of the water tank via the hose connection (A).
The water flows through the flow meter (B) and rotates the fan
impeller inside. This causes electronic impulses to be generated which
determine the amount of water actually conveyed.
The water flows through the flow meter (B) and rotates the fan
impeller inside. This causes electronic impulses to be generated which
determine the amount of water actually conveyed.
The pump (C) generates a pressure of 5–8 bar.
The pump (C) generates a pressure of 5–8 bar.
The diaphragm regulator (D) minimises pressure peaks and keeps the
pressure at a constantly high level. Vibrations in the entire fluid system
are reduced.
As soon as the pump starts, a counter pressure builds up via the
reduction angle (D). The pump starts more quietly and the pressure is
kept at a constantly high level. Vibrations in the entire fluid system are
reduced.
A fabric hose (E) feeds the water to the heater.
Too high pressure in the system is discharged by the blow-off valve
(F). It opens at approx. 9 bar. Discharged water (G) is then conveyed
into the drip tray via hoses.
Note: From production date FD8307 on a reinforced brewing unit has
been implemented so the blow-off valve is no longer necessary.
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A fabric hose (E) feeds the water to the heater.
Too high pressure in the system is discharged by the blow-off valve
(F). It opens at approx. 9 bar. Discharged water (G) is then conveyed
into the drip tray via hoses.
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5.6
Temperature
5.6.1
Temperature pattern
For Basic-variants TK60x /TCA60x the temperature
level cannot be adjusted.
Temperature setting is fixed by the factory.
The temperature graph indicates the temperature pattern on the
heater during operation.
!
After coffee has been drawn,
the appliance may be briefly
disabled from reheating.
As soon as steam has been
drawn, coffee can be brewed
again without waiting for the
appliance to cool down.
Coffee cannot be drawn after
steam has been drawn if there
is too little ground coffee in the
brewing unit. The brewing
process is terminated, there is
no pumping. The brewing unit
moves to the grinding position.
Automatic cooling starts (several
ml of water are conveyed).
I
II
III
IV
V
VI
VII
VIII
IX
Heating up
Brewing mode
Draw coffee (approx. 91 °C) / draw hot water (approx. 95 °C)
Reheating
Brewing mode
Heating up to draw steam (approx. 140 °C)
Steam ready
Drawing steam
Cooling after drawing steam
58300000111212_ARA_en_f.doc – 20.07.09
A
B
C
D
E
F
Switch on, press Standby button
Press the coffee dispensing button or draw hot water
Stop drawing coffee / hot water
Turn function selector to steam, heating up process begins
Draw steam
Turn function selector to cafe, cooling down process begins
Seite 47 von 102
5.7
Overview of the symbols
5.7.1
Rinsing
5.7.2
Filling the system
Symbol is lit:
Symbol is lit:
When the appliance is switched
on and off, the hose system is
rinsed with water.
The water line system in the
appliance is empty.
OR
an empty water line system is
being filled.
Remark:
flashes
A rinsing process does not start
unless
►
►
coffee was drawn as the
last product,
the temperature on the
thermal block is below
130 °C.
Remark:
lit
flashes
System
water.
must
be
refilled
with
Remedial action:
Press the coffee dispensing
button. System is filled (minimum
amount)
Note:
If the message does not go out,
check the water flow. If water runs
into the tray, the flow meter is
defective. If water does not flow,
check the diaphragm regulator.
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5.7.3
Appliance is being cleaned
lit
5.7.4
Appliance is being descaled
Symbol is lit:
Symbol is lit:
The appliance is being cleaned.
The appliance is being descaled.
lit
flashes
flashes
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5.7.5
5.7.6
System too hot
Filling with ground coffee – cover closed
Both symbols flash:
Coffee scoop flashes,
The appliance is currently too hot
for brewing ground coffee with too
little ground coffee.
Coffee cup is lit:
The ground coffee duct flap was
opened, the ground coffee slot
can be filled with ground coffee.
Remedial action:
flashes
Leave the appliance to cool down
or cool it manually by drawing hot
water.
Remark:
lit
Before coffee can be brewed, the
ground coffee duct flap must be
closed.
lit
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5.7.7
5.7.8
Preground coffee
Drawing coffee with pre-ground coffee
Both symbols flash:
Both symbols are lit:
Ground coffee was filled, the cover
is closed again.
Pre-ground coffee is being
drawn
Remark:
lit
lit
Start coffee production by pressing
the coffee dispensing button. The
grinding unit does not start in this
function.
Remark:
lit
flashes
If the coffee dispensing button
is pressed again, the brewing
of pre-ground coffee can be
interrupted at any time.
Note:
If the cup is not actuated within
90 sec., the system is automatically
drained to prevent overfilling. The
system is drained and rinsed.
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5.7.9
Filling with beans
5.7.10 Coffee brewing in standby
Both symbols flash:
Symbol is lit:
The bean container is empty.
Indicates that the appliance is in
normal operating mode.
Coffee or hot water can be drawn.
Remedial action:
lit
lit
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Fill the bean container and restart
coffee production by pressing the
coffee dispensing button.
lit
lit
Seite 52 von 102
5.7.11 Drawing coffee
5.7.12 Appliance is heating up
Symbol is lit:
Symbol flashes:
Coffee is being drawn.
Appliance is heating up.
Remark:
lit
flashes
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If the coffee dispensing button is
pressed again, the drawing of
coffee can be interrupted at any
time.
Remark:
flashes
Approx. 70 seconds
Seite 53 von 102
5.7.14 Appliance heats up to steam temperature
5.7.13 Drawing steam
Symbol is lit:
Symbol flashes:
Steam is being drawn.
Heater heats
temperature
temperature.
up from
to
coffee
steam
Remark:
lit
lit
flashes
flashes
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Duration approx. 15 seconds
Seite 54 von 102
5.7.15 Filling with water
5.7.16 Empty the trays
Symbol is lit:
Symbol is lit:
Too little water in the tank
Drip tray or coffee dregs tray is full
Water tank not or incorrectly
inserted.
OR
the switch contacts on the drip
tray are dirty.
Remedial action:
lit
Fill water tank with fresh water.
Insert water tank
Note: The water level is monitored
by a software counter (impulses
from flow meter) and float / magnetic switch. A residual water level
between 80 ml and 180 ml in the
tank is possible. The amount of
residual water in the tank depends
on the product which was last
brewed (espresso, coffee...).
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Remedial action:
lit
Remove drip tray or coffee dregs
tray, empty and re-insert.
Carefully clean the switch contacts.
Ensure that there is no coffee or
water residue on the switch
contacts.
Seite 55 von 102
5.7.17 No trays
5.7.18 Turn on coffee
Symbol flashes:
Symbol is lit:
Drip tray not or incorrectly
inserted. (The appliance cannot
detect the coffee dregs tray).
For reasons of function the
function selector must be set to
the coffee position.
Remedial action:
lit
Insert trays correctly
Note: Heater OFF
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Remedial action:
lit
Rotate function selector to the
coffee position.
Seite 56 von 102
5.7.19 Turn on water
lit
5.7.20 Door not closed / No brewing unit
“Turn on water” flashes 5 times,
coffee cup is lit:
Symbol is lit:
The appliance is heated by
drawing steam and should be
cooled down by drawing hot
water.
OR
Remark:
Remedial action:
Required before starting the
cleaning or descaling programme.
Remedial action:
lit
58300000111212_ARA_en_f.doc – 20.07.09
Service door is not closed
Brewing unit is not or incorrectly installed.
lit
►
Close service door.
►
Re-install
and
brewing unit.
lock
Set function selector to draw hot
water.
Seite 57 von 102
5.7.21 Changing the filter
5.7.22 Error 1
Both symbols are lit:
Upper symbol is lit,
When approx. 50 l of water have
run through (corresponds to
approx. 400 brews) or after
2 months at the latest, the effect of
the filter is depleted.
lower row flashes:
Error 1
NTC temperature sensor is outside the measurement range.
Remedial action:
lit
Changing the water filter
OR
lit
continue operation without filter.
Change settings on the appliance
accordingly.
Note:
Descaling
and
cleaning
programmes are disabled while
this display is lit.
58300000111212_ARA_en_f.doc – 20.07.09
flashes
Appliance too cold (< 5 °C) or NTC
defective (short-circuit).
The message is indicated when
the appliance has been switched
on and initialised.
If the ambient temperature is too
low, the message goes out when
the appliance has warmed up to
room temperature.
Seite 58 von 102
5.7.23 Error 5
flashes
5.7.24 Error 8
Upper symbol is lit,
Upper symbol is lit,
lower row flashes:
lower row flashes:
Appliance is heating up.
Brewing unit
properly.
Error 5
Error 8
Heater or thermal fuse defective
(interrupted).
Initialisation of the brewing unit
has failed.
If this defect occurs while the
appliance is operating in a warm
state, the message “Unit is heating”
is displayed. The message is indicated as long as the appliance
remains switched on.
When the appliance has been
switched off and after the cooling
phase, the message is indicated as
in the cold state.
flashes
cannot
move
The brewing unit cannot be moved into the
upper end position.
This may be due to several causes, e.g.:
►
Incorrect operation – the brewing
unit was filled with too much preground coffee or with whole coffee
beans via the ground coffee slot.
►
Incorrect operation – cleaning tablet
was inserted too early and blocked
the brewing unit.
►
Wrong coffee settings – too much,
too finely ground coffee.
►
Wrong grinding unit setting – grinding too coarse, amount too large.
If the message does not go out when the appliance is switched off
and on again, disconnect the appliance from the mains and clean
the upper filter of the brewing unit.
If required, re-adjust the grinding unit setting.
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Seite 59 von 102
6
REPAIR
6.1
Replacing the brewing unit
6.1.1
Removing the brewing unit
The brewing unit is permanently installed in the appliance.
The service door on the right-hand side of the appliance provides
access to the brewing unit by customers. During a service the brewing
unit can be released and taken out of the appliance.
6.1.1.1
To ensure that the door is not opened without authorisation, e.g. with
a coin, the locking knob features an additional crosspiece (A). Open
the service door with a screwdriver PB 169/6 M4 (commercially
available).
Opening the service door
The service door, behind the brewing unit is permanently installed, is
locked with a bar.
Open the door by rotating the locking knob in a clockwise direction.
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6.1.1.2
Releasing the brewing unit
When the service door has been opened, the brewing unit is
accessible. The brewing unit is secured in the appliance with three
locks.
Removing the brewing unit
(A) Remove 3 rubber caps with a flat screwdriver
(B) Loosen 3 locks by rotating them with a flat screwdriver
(C) Pull out brewing unit of the appliance
Symbols on the brewing unit indicate whether the lock is open or
closed.
Lock closed
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Lock open
Seite 61 von 102
6.1.2
6.1.2.1
Replacing the brewing unit
Inserting the brewing unit
The brewing unit can only be inserted in the basic position.
►
The brewing chamber is located completely underneath the
filling funnel.
Inserting the brewing unit
(A) Insert brewing unit into the appliance
(B) Fix two locks by rotating them clockwise with a flat screwdriver
(C) Fix lock by rotating it counter clockwise with a flat screwdriver
(D) Insert three rubber caps into the notches
Symbols on the brewing unit indicate whether the lock is open or
closed.
Lock closed
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Lock open
Seite 62 von 102
6.1.3
Greasing the brewing unit
During a service, the O-ring for the coffee outlet (A), the lip seal
surrounding the brewing head (B), the O-ring for the water inlet (C)
and the coupling for the input shaft (D) must be thinly greased with
food-safe special lubricating grease PARALIQ® GTE 703 Mat.-no.:
31 0574.
Note:
After replacing the O-ring for the coffee outlet (A) or for
the water inlet (C) they must be thinly greased with foodsafe special lubricating grease PARALIQ® GTE 703
Mat.-no.: 31 0574.
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Seite 63 von 102
6.2
General disassembly
Risk of electric shock!
Pull out mains plug before disassembly.
Appliance must not be live!
DANGER!
Tools:
►
Torx-Screwdriver T10
6.2.1
Procedure:
1.
Remove the water tank (A) from the appliance.
5.
Remove back panel (E) to rear.
2.
Remove the aroma protection cover (B) from the bean container.
6.
Remove upper section of housing to rear and up.
3.
Open and remove the ground coffee flap (C). To do this, open
the flap and pull it up.
7.
Remove housing side sections (G) by pulling them up.
4.
Loosen 8 Torx T10 screws (D) on back panel (E) of appliance.
Note!
When removing the back
panel take care of the supply
cable to the mains switch!
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Seite 64 von 102
6.3
Replacing the thermal fuse
The thermal fuse (STB) is a safety element which is
used to prevent damage caused by the heater
overheating. To ensure correct function, it is essential to
install the thermal fuse properly.
► Whenever the appliance is repaired, check as
a precaution that the thermal fuse is in perfect
condition and is correctly installed!
6.3.1
6.3.3
1
2
3
Installation location
Screw with circlip
Installation bracket
Heater
Checking an installed thermal fuse:
The following points must be checked:
►
►
►
►
Position and attachment of the Teflon hose (must be firmly
anchored)
Position of the thermal fuse (centred under installation
bracket)
Quality of the cable connections
Bend correct
Installation bracket is firmly attached
6.3.2
Component
►
The thermal fuse is supplied as a pre-assembled component.
(Wire colour and type may deviate in reality).
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6.3.4
Installing / replacing the thermal fuse:
► After removing the defective thermal fuse,
comply with the following new steps to ensure
correct installation:
1.
2.
3.
4.
5.
►
►
►
6.
Check installation position for heater (no dirt or projecting
edges permitted).
Check installation bracket (no dirt or sharp edges permitted).
Check whether it is the correct type of thermal fuse (according
to wiring / circuit diagram).
Position Teflon hose over the thermal fuse, ensuring that none
of the electrically conductive parts remains uncovered (same
as the illustrated example of the thermal fuse, slight kinking is
used to fix the hose).
Before installation, bend connections of the new thermal fuse
according to the thermal fuse to be replaced. This must be
done with a suitable pair of flat nose pliers. In doing so,
comply with the following points:
Bend must be at least 5 mm from the housing of the thermal
fuse.
Teflon hose and thermal fuse must not be damaged.
Connections may be bent 1 x only.
Position thermal fuse on the mounting surface of the heater,
ensuring that the installation bracket is in the centre of the
thermal fuse housing (attention: note original position).
7.
8.
9.
10.
Insert installation bracket into the designated guide. (Ensure
that the bracket is inserted according to the picture)
Attach installation bracket with the corresponding screw and
circlip.
Following installation, check that the installation bracket on the
side of the thermal fuse is not situated on the heater
(according to following picture).
Connect thermal fuse wires to the correct terminals in the
appliance.
Important!
Installation bracket must not be situated on the
heater
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6.4
Removing the coffee outlet
6.4.1
Opening the coffee outlet
►
To open the coffee outlet, insert a flat-tipped screwdriver into
the catch on the underside of the outlet slide (1.), loosen the
catch (2.) and remove the front housing section of the outlet
slide. (3.)
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6.4.2
Loosening the coffee distributor
►
First remove the silicone hose (A). Remove the coffee
distributor (B) after detaching the catches (C).
Seite 67 von 102
6.4.3
Loosening the metal bands
The steplessly height-adjustable coffee outlet is braked by metal
bands on which magnets press.
6.4.4
Removing the metal bands
►
Using a flat-tipped screwdriver, press the metal band (A)
downwards.
►
Remove the metal bands (A) and the braking magnets (B).
For subsequent removal:
►
Press the outlet slide all the way down (1.)
►
Insert a flat-tipped screwdriver into the side openings in the
metal bands (A) and prise the metal bands out of the guide
pins by rotating the screwdriver (2.)
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6.4.5
Loosening the screw fittings
When the metal bands have been removed, the screw fittings are
accessible.
(A)
Attachment of the outlet slide
(2x Torx T10)
(B)
Fastening screws for the front panel
(3x Torx T10)
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Seite 69 von 102
6.5
Remedial actions for “Error 8” - message
6.5.2.2
6.5.1
Causes of “Error 8” message
To improve functional safety, a stripping-off clip (B) was fitted to the
brewing unit (A).
The brewing unit initialisation has failed. The brewing unit cannot be
moved into the upper end position.
This may be due to several causes, e.g.:
►
Incorrect operation (ground coffee filled with too much preground coffee or whole coffee beans)
►
Incorrect operation (cleaning tablets added at the wrong time)
►
Wrong coffee settings (too much, too finely ground coffee)
►
Wrong grinding unit setting (grinding unit not adjusted accurately enough)
►
From production date FD8701 on: Microswitch for drip tray
monitoring is not actuated (wrong or defective drip tray
inserted). Power supply for gear motor is interrupted. Brewing
unit cannot be moved.
6.5.2
Remedial actions
6.5.2.1
Stripping-off clip
This stripping-off clip is attached to the discharge chute on the
brewing chamber and moves closely past the upper brewing filter (C)
during each brewing cycle. Coffee dregs which stick to the brewing
filter are therefore removed mechanically.
Faults in the brewing cycle and during initialisation of the brewing unit
due to overdosage are therefore avoided.
Note: The stripping-off clip is a component of the brewing unit and is
not available separately. All current replacement brewing units feature
this stripping-off clip.
Cleaning the upper brewing filter
If the fault message does not go out when the appliance is switched
off and on again, disconnect the appliance from the power supply and
clean the upper brewing filter (C) in the brewing unit.
It is not necessary to remove the brewing unit for this process.
►
Pull out and remove the drip tray.
►
Insert a damp cloth into the drip tray duct from the front on the
right, pull upwards and clean the brewing filter by hands.
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Seite 70 von 102
6.5.2.3
Fin on the control lever of the brewing unit
It is possible that a cleaning tablet which is dropped in too early may
stick in the area of the control lever for the brewing unit. This results in
a blockage of the brewing unit and in the Error 8 message. In the
worst case this may also cause the lever to jump out.
6.5.2.4
“Cleaning process” sticker
Information sticker to avoid damage caused by adding the cleaning
tablet at the wrong time is stuck to the inside of the right appliance
flap.
Therefore a fin (A) is also attached the control lever.
The information stickers are available as a spare part for service.
The control lever is a component of the brewing unit and is not
available separately. All current replacement brewing units feature this
new lever.
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Seite 71 von 102
6.5.2.5
Replacement ground coffee duct
To optimise filling of the brewing unit, the ground coffee duct and the
grinding unit funnel have been reworked.
To ensure that the ground coffee falls into the middle of the brewing
chamber, the stop edge (c) was moved towards the centre by 2 mm.
The corners (a) and the side panels (b) have been optimised in such
a way the ground coffee is stopped smoothly. This is important in
order to meter an exact amount of ground coffee.
6.5.2.6
Plug insulation on gearbox microswitch
During installation and maintenance there is a risk that the plug-in
contacts of the microswitches may be bent while work is being carried
out on the gearbox. A short-circuit may occur. This results in malfunctions and the Error 8 fault message (initialisation fault).
By moving the stop edge on the grinding unit funnel, the opening for
the cleaning tablet is reduced. This is compensated for by the rounding of the filling edge (d) on the ground coffee duct.
Replacement ground coffee duct
This can be avoided by using an insulating nozzle (mat. no. 42 8267)
for each microswitch.
In the event of a service the modified components – ground coffee
duct and grinding unit funnel – should both be replaced.
Module consisting of a ground coffee duct and grinding unit funnel is
available under mat. no. 49 6369.
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Seite 72 von 102
7
FAULT DIAGNOSTICS
7.1
Malfunctions
7.1.1
Drawing coffee
Complaint
Cause?
Remedial action
Coffee temperature too low
►
►
Prewarm cup or rinse out with hot water.
Heat milk.
Brewing system not prewarmed (1st coffee ►
brewing process after appliance switched on),
low amount of liquid (e.g. espresso)
Prewarm brewing system; to do this open
and close ground coffee duct flap and start a
coffee brewing process.
►
Rotate function selector briefly to draw
steam in order to increase the temperature.
(Measure coffee temperature ►
5–10 mm under coffee outlet!)
Coffee temperature too high
Coffee has too little aroma
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Cold cup or cold milk in the cup
►
Appliance calcified
►
Descale.
►
Heater has heated up to steam temperature
►
Cool down heater by drawing hot water
►
Replace NTC temperature sensor
►
Tighten NTC temperature sensor
►
NTC temperature sensor defective
►
NTC temperature sensor not screwed on
correctly
►
Logic module defective
►
Replace logic module
►
Grinding unit setting not optimum
►
Adjust grinding unit setting. (Change degree
of grinding only while the grinding unit is
running)
►
Unsuitable coffee or beans no longer fresh
►
Change coffee or use fresh beans.
Seite 73 von 102
7.1.2
Drawing coffee
Complaint
Cause?
Remedial action
Coffee has no “crema”
►
Unsuitable coffee or beans no longer fresh
►
(Layer of froth)
►
Grinding unit setting not adjusted optimally to ►
coffee beans
►
Brewing system dirty
Change coffee or use fresh beans
Adjust grinding unit setting. (Change degree
of grinding only while the grinding unit is
running)
►
Run descaling and cleaning programmes
Coffee levels differ
►
– when simultaneously filling
►
two cups (> +/– 15%)
Appliance not level
►
Place appliance on a level base
Outlet distributor dirty or defective
►
Replace outlet distributor
– when drawing several cups ►
in succession
Hose system or drainage valve leaking
►
During a brewing process check hose system
and drainage valve for leaks
Drainage valve leaking due to coffee dregs
►
Run descaling programme
►
Replace drainage valve
►
►
Incorrect pulsing from flow meter
►
Check hose system between flow meter and
pump. If hose length = 6 cm replace hose
with kit mat. no. 49 3828 (hose = 22 cm)
Coffee is only dripping out
►
Degree of grinding setting too fine
►
Set a coarser degree of grinding.
– tastes too bitter
►
Coffee ground too finely
►
Use coarser ground coffee or reduce dosage.
►
Brewing filter blocked or silted up
►
Clean brewing filter or run cleaning programme.
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7.1.3
Grinding unit
Complaint
Cause?
Coffee beans are not ground
►
Grinding unit has not been adequately filled with ►
coffee
Press coffee dispensing button again to start
another brewing process
►
Coffee beans are too oily and stick to the wall of
the bean container
►
Empty and clean bean container. Use beans
with lower fat content
►
Coffee beans do not fall into the grinding unit
►
Bean container is empty
►
Fill bean container
►
Coffee beans do not fall into the grinding unit, are ►
too oily and stick to the wall of the bean container
Empty and clean bean container. Use beans
with lower fat content
Noise of grinding unit is loud ►
Foreign object in grinding unit (e.g. grit, may also ►
occur with select coffees)
Replace grinding unit
Noise of grinding unit
is quieter and higher
Grinding unit is not
functioning
Grinding unit starts as soon
as appliance is switched on
58300000111212_ARA_en_f.doc – 20.07.09
Remedial action
►
Ground coffee has been selected
►
Press coffee dispensing button again to start
another brewing process
►
Power module not actuated by the logic module
►
Check actuation; to do this, press the coffee
dispensing button to start a brewing
process. If required, replace the logic
module
►
Grinding unit not actuated by the power module
►
Check actuation; to do this, press the coffee
dispensing button to start a brewing
process. If required, replace the power
module
►
Grinding unit motor defective
►
Replace grinding unit
►
Optocoupler on power module defective
►
Replace the power module
Seite 75 von 102
7.1.4
Drawing hot water and steam / frothing
Complaint
Cause?
No hot water or steam ►
function, too little steam
Remedial action
Frother dirty or calcified
►
Dismantle frother, clean carefully or descale
►
Steam/hot water pipe dirty, blocked or calcified
►
Clean or descale steam/hot water pipe
►
Ceramic valve (function selector) blocked, calci- ►
fied
Too little froth when frothing ►
milk
Frother dirty or calcified
►
Dismantle frother, clean carefully or descale
►
Frother assembled incorrectly
►
Assemble correctly and ensure all parts are
fitted securely without gaps
►
Milk is not at refrigerator temperature
►
Use only cold milk which is at refrigerator
temperature
►
Milk has excessively high fat content
►
Use only long-life milk with a fat content of
1.5%
►
Heater calcified (temperature drop)
►
Descale the appliance
– poor froth consistency
– froth collapses
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Replace ceramic valve and descale
Seite 76 von 102
7.1.5
Cleaning and descaling programme
Complaint
Cause?
Remedial action
Cleaning programme does ►
not start
System too hot (message on display)
►
Cool down system by drawing hot water
Cleaning programme stops ►
after addition of cleaning
tablet
►
Ground coffee flap is not closed
►
Close ground coffee duct flap and press
coffee dispensing button
No ground coffee duct flap or no magnet on ►
ground coffee duct flap
Replace ground coffee duct flap with magnet
►
Reed switch for detecting the ground coffee duct ►
flap defective
Replace reed switch
Error message “Fault 8” is ►
indicated
Cleaning tablet added at wrong time. Cleaning ►
tablet is blocking brewing unit
Remove and clean brewing unit, remove
cleaning tablet
►
►
Descaling programme does ►
not start
►
From production date FD8701 on: Microswitch ►
for drip tray monitoring is not actuated
Wrong or defective drip tray inserted. Power
supply for gear motor is interrupted. Brewing
unit cannot be moved. Replace drip tray.
System too hot (message on display)
►
Cool down system by drawing hot water
Water filter inserted and active
►
Remove
water
programming
►
Adjust water hardness
►
Observe 0,5 l mark on water tank
Descaling programme runs ►
for too long
►
Too much liquid in water tank
Descaling display does not ►
go out after descaling
Descaling was ended prematurely
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If damaged, replace brewing unit
Request to empty trays is indicated. Descaling ►
programme interrupted
►
filter
and
change
Empty trays, clean contacts and dry
Restart descaling and run from start to end
Seite 77 von 102
7.1.6
Leaks
Complaint
Cause?
Water tank leaking
►
Water tank, valve and sealing ring dirty or calci- ►
fied
►
Water tank defective
►
Replace water tank
►
Cracks in water tank coupling
►
Replace water tank coupling
►
Residual water does not run into the drip tray (for ►
appliances with fluid connection bracket)
►
Grease film on ceramic discs not homogeneous
►
Actuate ceramic valve several times
Ceramic valve leaking
►
Replace ceramic valve and, following installation, actuate 2 – 3 times
►
Replace drip tray (new material)
Water tank coupling leaking
Ceramic valve leaking
Water running out during brew- ►
ing process
Remedial action
Drip tray leaking
►
Crack in drip tray
Hose system leaking
►
Calcification increases pressure in the hose above ►
35 bar
Fabric hoses burst
►
Hose has preliminary damage
Drainage valve leaking
►
Drainage valve leaking due to coffee dregs
Water running out during brewing process
Brewing unit leaking
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Replace hose, descale
Run cleaning and descaling programme
►
Replace drainage valve
►
Replace drainage valve
Seal damaged
►
Seals on water coupling and on coffee outlet of the ►
brewing unit leaking
Lip seal or brewing head defective
Install spare-part set for water tank overflow
(mat. no.: 42 5993)
►
►
Water running out during brewing process
►
Clean and descale water tank
►
Replace and lubricate seals
Replace brewing unit
Seite 78 von 102
7.2
System and error messages
7.2.1
Error messages
7.2.1.1
7.2.1.2
Error 1
Error 5
Upper symbol is lit
Upper symbol is lit
Lower row flashes
Lower row flashes
Fault 1
Error 5
NTC temperature sensor is outside the measurement
range.
Heater or thermal link is defective (interrupted).
Appliance too cold (< 5 °C) or NTC defective (short-cut).
If this defect occurs while the appliance is operating in a
warm state, the message “Unit is heating” is displayed.
The message is indicated when the appliance has been
switched on and initialised.
The message is indicated as long as the appliance
remains switched on.
If the ambient temperature is too low, the message
goes out when the appliance has warmed up to room
temperature.
When the appliance has been switched off and after the
cooling phase, the message is indicated as in the cold
state.
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7.2.1.3
Error 8
Upper symbol is lit
Lower row flashes
Error 8
Initialisation of the brewing unit has failed.
The brewing unit cannot be moved into the upper end
position.
This may be due to several causes, e.g.:
►
Incorrect operation – the brewing unit was filled
with too much preground coffee or with whole
coffee beans via the ground coffee slot.
►
Incorrect operation – cleaning tablet was inserted
too early and blocked the brewing unit.
►
Wrong coffee settings – too much, too finely
ground coffee.
►
Wrong grinding unit setting – grinding too coarse,
amount too large.
If the message does not go out when the appliance is switched off
and on again, disconnect the appliance from the power supply and
clean the upper filter in the brewing unit with a damp cloth (kitchen
roll). To do this, remove the drip tray and access the appliance from
the front.
If required, re-adjust the grinding unit setting.
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7.2.2
7.2.2.1
System messages
Add water
Symbol is lit
ADD WATER
Water tank is empty
(1) The water level in the tank is monitored by a float
with magnet (A) / magnetic switch and software counter
(pulses from flow meter) in the appliance.
(2) When the water tank has been filled, the float rises
and actuates the magnetic switch.
►
The appliance is ready to use.
(3) If the water level drops to a level between 80 ml and 180 ml,
ADD WATER is displayed. The amount of residual water in the tank
depends on the product which was last brewed (espresso, coffee...).
Brewing is not terminated due to lack of water.
(4) Silting or calcification in the water tank may cause the float to
stick to the tank wall. Despite the filled tank, the ADD WATER
display does not go out.
The incorporation of additional guide fins (B) for the float reduces
the risk of the float sticking.
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7.2.2.2
Add beans
Both symbols flash
ADD BEANS
No coffee beans in the bean container (a)
►
Fill up bean container with fresh coffee beans
and press the coffee dispensing button to start
a brewing process.
ADD BEANS is not displayed until a brewing process
ends, as the actual filling of the brewing chamber is
measured during the brewing process.
ADD BEANS is displayed, even though the bean container has been
filled:
►
Grinding unit is not filled with ground coffee, e.g. when
switching on the appliance for the first time or following
service – press the coffee dispensing button to start another
coffee brewing process.
►
Beans cannot flow into the grinding unit – empty and clean
bean container. Use beans with lower fat content. Beans
with a high fat content may stick to the surface of the bean
container.
►
Grinding process takes too long, not enough coffee is ground
– set coarser degree of grinding (b).
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7.2.2.3
Close the door
7.2.2.4
Empty trays
Symbol is lit
Symbol is lit
CLOSE THE DOOR
EMPTY TRAYS
Service door not closed or brewing unit not locked
Dregs drawer or drip tray are full or tray contacts are
dirty
►
Close service door
►
Install and lock brewing unit
Door contact switch is not in the correct
position in the appliance. This may be the
case if e.g. transportation disengages the
switch holder. In these cases remedial
action may be performed if the switch holder
snaps back into its original position and is
also secured with a retaining ring. To improve transportation safety, this retaining
ring has since been used in series
production as well.
When the drip tray is full of water, the tray contacts are
inserted into the water. The electrical resistance
between the contacts drops. EMPTY TRAYS is displayed.
►
Pull trays, empty and re-insert.
If the EMPTY TRAYS display does not go out despite the trays
having been emptied, there may be residual water or coffee
between the tray contacts (transfer resistance caused by damp
ground coffee). Carefully clean trays in the area of the contacts.
EMPTY TRAYS is displayed after a number of coffee brews, e.g.:
8 x Strong
10 x Normal
14 x Mild
8 x Ground coffee
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7.2.2.5
Trays missing
Symbol flashes
TRAYS MISSING
Drip tray not or incorrectly inserted
►
Insert drip tray all the way
If the TRAYS MISSING display goes out even though the drip tray
has not been inserted, check that the tray contacts are positioned
correctly.
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7.3
Incoming goods inspection
4. Fill water tank
The incoming goods inspection allows machine faults to be
localised quickly and suitable repair measures to be initiated:
►
►
Follow the sequence in the table.
5. Coffee preparation without coffee
►
Repair any faults and repeat the repair routine to the end.
►
Open and close ground coffee lid, are messages indicated?
►
Press the coffee dispensing button. Is water running out of the
coffee outlet?
1. Check machine for visual damage
►
Housing part broken, damaged or deformed?
►
Power cord or mains plug damaged?
►
Has the customer opened the appliance?
Water tank leaking?
6. Coffee preparation without beans
►
Check clockwise rotation of the grinding unit.
►
Brewing stops, is “Add beans” message indicated?
2. Check the mechanical elements
►
Drip tray with dregs drawer clean, inserted.
►
Does function selector move easily?
►
Ground coffee lid in place, closed?
3. Switching on the appliance
►
Switch on the appliance with the mains switch.
►
Is illuminated ring on the “On/Off” button lit?
►
Switch on with standby button, appliance initialised? Conduct
drawer test with original tray.
►
Insert test drawer, appliance rinses independently. Are
illuminated rings on the standby and coffee dispensing
buttons lit?
►
How long does the machine require to heat up, rinse?
(Standard time approx. 70 sec.)
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7. Check tank sensor
►
Remove water tank, is “Add water” message indicated?
8. Hot water preparation
►
Rotate function selector to draw hot water.
►
Is the pump functioning?
►
Is hot water running out of the steam pipe?
9. Steam generation
►
Rotate function selector to draw steam. Approx. 30 seconds
until clock timing regular?
►
Is steam flowing out of the steam pipe?
10. PC service diagnosis
►
Conduct input diagnosis.
Seite 85 von 102
7.4
Service diagnosis
7.4.1
Hardware requirements
7.4.2
To operate the system without errors, the following minimum
requirements must be satisfied:
Service diagnosis kit (Mat.-no. 34 0995)
A service diagnosis kit is required to support diagnosis of the
appliances by PC. This kit includes the following components:
Hardware requirements:
PC 486 or higher
VGA
MS DOS 6.0 or higher
Windows 95 / 98 / NT / 2000
At least 5MB disc space
on HD
3.5” disk drive
At least 2 serial interfaces
USB interface
Parallel interface
Printer
(A)
(B)
(C)
(D)
(E)
(F)
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Scanner (is switched between PC and test object)
Connecting cable between scanner and test object
CD with diagnostic software
Connecting cable between PC and scanner
Start installation disk
Power supply unit for scanner (In: 230 V/50 Hz,
Out: 9 VAC/300 mA 2.7 VA)
Seite 86 von 102
7.4.3
Installing the software
Insert Start disk in drive “A”
Insert software CD in drive
Menu Start, Run, disk drive SETUP.EXE
Follow installation instructions
7.4.5
USB service diagnosis kit
The scope of delivery is changed with the introduction of the new USB
service diagnostic kit (Mat.-no. 34 0995).
The power supply unit is no longer required because the scanner is
supplied via the USB connection on the PC.
Start the programme
7.4.4
Connecting the test object
Data can be exchanged between the appliance to be tested and the
connected PC via the scanner.
Installation of the software, surface of the animation and diagnostic
sequence remain unchanged up to the present version.
The scanner is connected to the PC and test object with the
connecting cables included in the diagnostic kit. The scanner is
supplied with a 9 VAC operating voltage via the power supply unit.
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7.4.6
Diagnostic plug
The diagnostic plug on the appliance will be accessible when the left
appliance flap is opened and the cover (A) is removed. The
transparent protective cap over the diagnostic plug must be removed
before the scanner is connected.
To ensure that the connecting cable is connected securely to the
scanner and the diagnostic plug (B) on the appliance, the diagnostic
plug can be pulled up slightly out of the appliance.
7.4.7
Input diagnostic
► Data is read out. (Production, statistical, service, customer data)
► The difference on the counter since the last service is deleted.
► The latest, current factory settings are transferred from the PC to
the machine.
► The internal appliance faults are analysed (service fault bits)
► Then either a static diagnostic or a dynamic diagnostic is run,
similar to the final inspection during production, however without
external power and temperature measurements and without
evaporation.
► This depends on the settings which are entered in the individual
test configuration of the input diagnosis.
► Finally a report is prepared which can either be saved or printed
out.
► Apart from the information mentioned under line 1, the report also
includes service suggestions depending on the number of brewing
processes, as well as max. 3 service stamps if the last ones were
implemented on the corresponding appliance.
When the diagnostic sequence has run, disconnect the cable, press
the diagnostic plug back into the guide in the appliance, re-attach the
transparent protective cap and close off access to the diagnostic plug
by re-attaching the cover (A).
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7.4.8
Service fault bits
Analyse internal
appliance fault.
Service fault bit
7.4.10 Definition of “minor” / “major” service
0 Check encoder cable
1 Coffee heating sensor – short-circuit
2 Coffee heating sensor – interruption
Descale appliance
3 Steam heating sensor – short-circuit
Take out and clean brewing unit
4 Steam heating sensor – interruption
Check flow meter
5 Heating up not possible
Check pressure hose
6 Water sensor above tolerance
Check grinding performance / result
7 Position cannot be started
Initialisation failed
8 Flow meter time-out / System blockage
Example:
7.4.9
7.4.10.1 Minor service
00001000
= Heating up not possible
Check flow meter
Brews since last intervention
< 1500
Fault rectified
Brews since last intervention
> 1500 < 3500
Minor service
Brews since last intervention
> 3500
Major service
Total brews / total rinses
and
Brews since last intervention
<2
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Descale appliance
Replace brewing unit
Measured variables for service suggestions
> 2500
7.4.10.2 Major service
Check pressure hose
Check outlet
Check grinding performance / result
Major service
Seite 89 von 102
7.4.11 Individual test
7.4.14 Service stamp
The following options can be selected:
The service stamp is input via the following form:
Upgrading factory settings
(the latest parameters are transferred from the PC to the appliance)
7.4.14.1 Group definition
Statistics
(Only data is read out of the appliance without any change to the
current appliance status)
Specific fault groups are allocated to the working points. When a
working point has been selected, its fault group is activated for
selection in "Input fault code".
Configuration of the input diagnostic (short / long)
(a “short / static” or “long / dynamic” input diagnostic can be selected.
Recommendation = dynamic diagnostic)
A690 = Instantaneous water heater replaced,
Resetting the grinding time
Reset to “initial start up”
F 4 00 = Coffee water heater blocked
(normal = 10 sec./initial start up = 13 sec.)
7.4.14.2 Service stamp structure
or keep the current grinding unit running time.
7.4.12 Statistics
The statistical data can be displayed via the individual test.
7.4.13 Output diagnostic
Customer data from the input diagnostic is saved back in the machine.
(Production, statistical, service, customer data)
Dynamic diagnostic similar to final inspection during production and
input diagnostic, however without external power and temperature
measurement, however with evaporation of the heating cartridge.
4
Fault group
This concept of the service stamp enables each service centre to
evaluate what work was carried out during the last service and which
faults were rectified. In all 3 service entries are saved in the appliance.
The first stamp is never overwritten. In the case of stamps 2 and 3 the
older stamp is overwritten. Therefore it is always obvious when the 2
previous services were carried out.
The definitions as work/fault codes, major faults, employee number
and number of services are included only in the last service entry
in the appliance.
The service date, number of the service centre and invoice item are
saved for all three entries.
Input service entry via input mask (see service stamp)
Identical to the input diagnostic, a report is also prepared here with the
same processing options.
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7.4.14.3 Contents
7.4.15 Service data
Number of services
Major fault code
Fault code 1
Work code 1
Work code 2
Work code 3
Customer
Employee number
1 – 255
001 – 999
001 – 999
001 – 999
001 – 999
001 – 999
1 – 15
1 – 999
Special software is required to analyse the data from the service
systems.
Service date stamp 1
01.01.1990 –
31.12.2117
1 – 4095
1 – 255
2026 Æ Animation system
Number of the animation system stamp 1
Invoice item stamp 1
Service date stamp 2
Number of the animation system stamp 2
Invoice item stamp 2
Service date stamp 3
Number of the animation system stamp 3
Invoice item stamp 3
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01.01.1990 –
31.12.2117
1 – 4095
1 – 255
This software is executed at each start of the service system. It
combines all repaired appliances in one text file. This file can be
imported for further processing into Excel or Access. The update
solution (FTP tool) can send these files by e-mail to the required
address. (See Internet update)
The file name of such a statistics file is composed as follows:
Animation system, year, month, day Æ 202620020909.TXT
2002 Æ year
09
Æ month
09
Æ day
TXT
Æ file name extension
The field separator for data import is a comma “,” with the file located
in the QS folder.
01.01.1990 –
31.12.2117
1 – 4095
1 – 255
Seite 91 von 102
7.5
Troubleshooting
Danger!
Troubleshooting:
If tests have to be conducted while the
appliance is live, ALWAYS use a residualcurrent-operated circuit-breaker!
1. Check power supply (220–240 VAC)
If there is no electrical meter available, temporarily insert and operate
another electrical device on the same socket.
►
No power supply → Have electrical installation checked.
►
Power supply available → see Point 2
7.5.1
Tools
►
Torx screwdriver T10
►
Electric multimeter
►
Circuit diagram
To do this, open the appliance. Using the Torx T10 screwdriver,
unscrew all rear panel screws and remove the rear panel.
7.5.2
Appliance does not switch on
Check voltage at the mains input (terminal on noise filter).
2. Check voltage at mains input (220–240 VAC)
Fault description:
►
No power supply → defective power cord
The display (display or symbol) on the appliance does not come on
►
Power supply available → see Point 3
Possible faults:
3. Check voltage at mains switch input (220–240 VAC)
1. No power supply
Measure voltage on the neutral conductor of the feed-in (terminal on
noise filter) and on the main switch input.
2. No voltage at the mains input of the appliance
3. No voltage at the mains switch
4. No voltage at the power module input
►
No power supply → defective mains filter
►
Power supply available → see Point 4
5. No voltage at the power module output to transformer
4. Check voltage at mains switch output (220–240 VAC)
6. No voltage at the power module input from transformer
Set mains switch to “On”.
7. No voltage at the power module output to logic module
Measure voltage on the neutral conductor of the feed-in (terminal on
noise filter) and on the main switch output.
8. No voltage at the logic module input
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►
No voltage → defective main switch
►
Power supply available → see Point 5
Seite 92 von 102
Appliance does not switch on
5. Check voltage at power module output to transformer (220–240
VAC)
Check voltage on plug CP2B on power module.
►
No voltage → defective power module (if voltage between F1
and F2 = 220–240 VAC)
►
Power supply available → see Point 6
6. Check voltage at power module input from transformer
The secondary voltages (15 VDC / 9 VDC) of the transformer are
measured on the flat plug CP4 (2 x red = 15 VDC / 2 x white = 9 VDC)
►
No voltage → defective transformer
►
No 15 VDC voltage → defective transformer
►
No 9 VDC voltage → defective transformer
►
Voltage available → see Point 7
7. Check voltage at power module output to logic (5 VDC)
The output voltage is measured from the power module to the logic
module (control electronics) on plug CP9, terminals 1 = GND (brown)
and 2 = + 5V (red).
►
No voltage → defective power module
►
Voltage available → see Point 8
8. Check voltage on logic module input
Measure voltage input on plug CM9 of the logic module on terminals 1
= GND (brown) and 2 = + 5 V (red).
►
No voltage → defective ribbon cable
►
Voltage available → defective logic module
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7.5.3
Grinding unit is not functioning
Fault description:
2. Check voltage on power module grinding unit output
Grinding unit is not running
The voltage for the grinding unit is measured on plug CP5 on
terminals 3 = GND (black) and 2 = 230 VDC (transparent). The
grinding unit must be actuated by a coffee brewing process.
Possible faults:
1. No control signal voltage from logic module
2. No voltage at power module grinding unit output
3. No voltage on the grinding unit
►
No voltage → defective power module
►
Voltage available → see Point 3
3. Check voltage on grinding unit
Troubleshooting:
1. Check control signal voltage from logic module
First check whether the logic module is relaying the signal required for
actuation of the grinding unit to the power module. To do this, open
the appliance. Using the Torx T10 screwdriver, unscrew all rear panel
screws and remove the rear panel. Remove upper appliance cover to
the rear. Remove both side panels upwards.
The operating voltage for the grinding unit is measured on the
connecting plugs of the grinding unit. (Black = GND, transparent =
230 VDC). The grinding unit must be actuated by a coffee brewing
process.
►
No voltage → defective wiring, interrupted VHF-filters,
actuated temperature limiter
►
Voltage available → defective grinding unit
The control signal voltage can be measured on plug CM9 on terminals
1 = GND (brown) and 5 = 5 VDC (green). The grinding unit must be
actuated by a coffee brewing process.
►
No signal voltage → Logic module or connecting cable
defective
►
Voltage available → see Point 2
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7.5.4
Pump is not functioning
Fault description:
3. Check voltage on thermostat input
Pump is not actuated / is not pumping
3. No voltage at thermostat input
Before the voltage can be checked on the pump itself, the thermostat
must be tested for function. The pump must not be overheated! The
voltage is measured at the thermostat input – on the right (grey cable
from power module) and at the thermostat output – on the left (grey
cable at pump connection. In both cases the phase connection (black)
of the pump is used as the anti-pole. The pump must be actuated by
a coffee brewing process.
4. No voltage on the pump
►
No voltage at the thermostat input → defective wiring
►
No voltage at the thermostat output → defective thermostat
►
Voltage available at thermostat output → see Point 4
Possible faults:
1. No control signal voltage from logic module
2. No voltage at power module pump output
Troubleshooting:
1. Check control signal voltage from logic module
To do this, open the appliance. Using the Torx T10 screwdriver,
unscrew all rear panel screws and remove the rear panel. Remove
upper appliance cover to the rear. Remove both side panels upwards.
The control signal voltage is measured on plug CM9 on terminals 1 =
GND (brown) and 8 = 5 VDC (grey). The pump must be actuated by a
coffee brewing process.
►
No signal voltage → Logic module or connecting cable
defective
►
Voltage available → see Point 2
4. Check voltage on the pump
The pump operating voltage is checked at the terminals of the pump.
►
No voltage → defective thermostat
►
Voltage available → defective pump
2. Check voltage on power module pump output
The voltage for the pump is measured on plug CP5 on terminal 1 =
phase and the neutral conductor, terminal 4. The pump must be
actuated by a coffee brewing process.
►
No voltage → defective power module
►
Voltage available → see Point 3
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7.5.5
Heater is not functioning
Fault description:
3. Check voltage on thermal release input
Does not heat up
The operating voltage of the heater (= 230VAC) is measured at the
thermal release input (brown = under the insulation sleeve) and on the
blue terminal on the heating element.
Possible faults:
1. No control signal voltage from logic module
2. No voltage at power module heater output
3. No voltage at thermal release input
4. No voltage at heater connection
Troubleshooting:
1. Check control signal voltage from logic module
To do this, open the appliance. Using the Torx T10 screwdriver,
unscrew all rear panel screws and remove the rear panel. Remove
upper appliance cover to the rear. Remove both side panels upwards.
►
No voltage → defective wiring
►
Voltage available → see Point 4
4. Check voltage on heater connection
The operating voltage of the heater (= 230 VAC) is checked on the
terminals of the heating element (brown = neutral conductor; blue =
phase).
►
No voltage → interrupted thermal fuses
►
Voltage available → defective heating element
The control signal voltage is measured on plug CM9 on terminals 1 =
GND and 4 = 5 VDC. The heater must be actuated by drawing hot
water. The heater is actuated in pulses.
►
No control voltage → Logic module or connecting cable
defective
►
Voltage available → see Point 2
2. Check voltage on power module heater output
The voltage for the heater is measured on plug CP5 on terminal 5 =
neutral conductor (blue) and terminal 1 = phase (brown). The heater
must be actuated by drawing hot water. The heater is actuated in
pulses.
►
No voltage → defective power module
►
Voltage available → see Point 3
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7.5.6
Brewing unit is not functioning
Fault description:
2. Check voltage on power module brewing unit output
Brewing unit no longer moves
To check the voltage at the power module brewing unit output (= 12
VDC), open the appliance. Using the Torx T10 screwdriver, unscrew
all rear panel screws and remove the rear panel. Remove upper
appliance cover to the rear. Remove both side panels upwards.
Possible faults:
1. No control signal voltage from logic module
2. No voltage at power module brewing unit output
3. No voltage at brewing unit drive input
The voltage for the drive of the brewing module is measured on plug
CP2A on terminals 1-green and 2-red.
For operation on right = brewing unit runs up;
green = GND / red = 16 VDC
Troubleshooting:
For operation on left = brewing unit runs down;
green = 16 VDC / red = GND
1. Check control signal voltage from logic module
To do this, open the appliance. Using the Torx T10 screwdriver,
unscrew all rear panel screws and remove the rear panel. Remove
upper appliance cover to the rear. Remove both side panels upwards.
Check two control signals for the brewing unit. Signal on right =
brewing unit runs up; signal on left = brewing unit runs down. The
control signal voltage on the right is measured on plug CM9 terminal 1
= GND (brown) and terminal 6 = 5 VDC (blue); the control signal
voltage on the left is measured on CM9 terminal 1 = GND (brown) and
terminal 7 = 5 VDC (violet). The brewing unit must be actuated by a
coffee brewing process.
The brewing unit must be actuated by a coffee brewing process.
►
No voltage → defective power module
From production date FD8701 on: Check microswitch for drip tray
detection and its trigger on the drip tray. Gear motor is only actuated if
the microswitch is closed.
►
Voltage available → see Point 3
3. Check voltage on brewing unit drive input
►
No control voltage on right → Logic module or connecting
cable defective
The operating voltage of the brewing unit drive is checked on the
terminals of the motor. To conduct this measurement, detach the drive
from the appliance.
►
No control voltage on left → Logic module or connecting cable
defective
The operating voltage can be measured on the terminals of the motor.
►
Voltage available → see Point 2
58300000111212_ARA_en_f.doc – 20.07.09
►
No voltage → defective wiring
►
Voltage available → defective brewing unit drive
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7.6
Measuring the coffee temperature
Test voltage: 230 V +/- 3 V
Procedure:
1.
Switch on the machine with the main switch, press the standby
button.
2.
Wait until the illuminated ring around the standby button stops
flashing (heating-up and rinsing phase has ended).
3.
Set filling quantity: coffee (approx. 125 ml)
Select coffee strength: Normal (approx. 9 g)
4.
Place a measuring cup (A) under the coffee outlet.
5.
Start coffee brewing process by pressing the coffee dispensing
button.
6.
Wait until there are 20 ml of coffee in the measuring cup.
Then measure the coffee temperature approx. 5 – 10 mm
under the coffee outlet (B) in the middle of flow.
1st coffee: The coffee temperature should be approx. 82 °C +/–5 C.
7.
Empty the measuring cup (A) and place it under the coffee
outlet again.
8.
Start coffee brewing process by pressing the coffee dispensing
button.
9.
Wait until there are 20 ml of coffee in the measuring cup.
Then measure the coffee temperature approx. 5 – 10 mm
under the coffee outlet (B) in the middle of flow.
2nd coffee: The coffee temperature should be approx. 82 °C +/–3 °C.
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8
TECHNICAL SPECIFICATIONS
8.1
Rating plate
The rating plate is situated on the control panel holder behind the drip
tray panel.
A
Voltage
B
VIB (sales identification designation)
C
Customer service index
Newly launched appliances are given the customer service
index “01”. The customer service index is increased to “02”,
“03”, etc. if customer service makes changes to the appliance.
D
Frequency
E
Production date according to BSH key.
For example: FD8410
84 = year minus 20 (=2004)
10 = month (October)
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F
Serial number (optional)
G
Power
H
Type (works designation)
I
Field for approbation number
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8.2
Power
8.3
8.2.1
Mains voltage
Fahrenheit
EU
UC
8.2.2
230 – 240 V / 50 Hz
120 V / 60 Hz
Connected load
Celsius
1300 W
8.2.3
Power input
Heater
Pump
8.2.4
1250 W
65 W
Power data (230 V / 50 Hz model)
20.5 Wh
1 coffee (normal strength)
17.0 Wh
1 espresso (normal strength)
9.3 Wh
Standby mode (24 hours)
3.0 Wh
Pump pressure
During coffee preparation
Static
max. permitted
8.2.6
max. 16 bar
19 bar
22 bar
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102
Coffee outlet
nd
2
coffee NORMAL (in the flow)
8.3.2
69 sec
82 °C +/– 5 °
82 °C +/– 3 °
Hot water
Hot water production without interruption
> 82 °C
Hot water production after 1st heating-up process
> 85 °C
8.3.3
Steam
Steam production 200 ml, 1 min. (pump clocks)
> 80 °C
Milk
Setpoint temperature UHT milk 1.5% (measure in
Tetrapack)
Switch-on time
Switch on with rinsing
8.3.1
8.3.4
Flow rate
120 – 240 ml/min at 12 bar, 230 – 240 V / 50 Hz
8.2.7
Formula
established 0°F as the stabilized temperature when
equal amounts of ice, water, and salt are mixed. He
then defined 96°F as the temperature "when the
thermometer is held in the mouth or under the armpit of
a living man in good health."
0°C and 100°C are arbitrarily placed at the melting and
boiling points of water and standard to the metric
system
C = (F-32)*0.5555
F = 1,8*C + 32
1st coffee NORMAL (in the flow)
Switch on (with rinsing)
8.2.5
Temperatures
10 °C +/– 5 °
Warm 100 ml milk in stainless steel jug <1 min.
55 – 70 °C
Froth up 100 ml milk with steam pipe < 1 min.
55 – 70 °C
CAPPUCCINATORE milk temperature
55 – 70 °C
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8.4
Dimensions and weight
8.4.1
Appliance dimensions
8.4.2
Height
345 mm
Width
273 mm
Depth
480 mm
Approx. 1.2 m
8.4.3
Weight of machine
7.5 kg
Height between
coffee outlet and drip plate
Cable length
75 mm – 115 mm
8.5
Filling amounts
8.5.1
Capacity
Water tank
Bean container
Drip tray
8.5.2
1
2
3
4
5
6
7
8
9
10
11
12
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102
1.8 l
Approx. 250 g
750 ml (signal limit)
Cup filling amounts
220 ml
160 ml
125 ml
80 ml
40 ml
20 ml
40 ml
80 ml
160 ml
250 ml
300 ml
360 ml
XXL COFFEE
LARGE COFFEE
COFFEE
SMALL COFFEE
ESPRESSO
SMALL ESPRESSO
2 SMALL ESPRESSOS
2 ESPRESSOS
2 SMALL COFFEES
2 COFFEES
2 LARGE COFFEES
2 XXL COFFEES
Seite 101 von
8.6
Components
Operating voltage
5,0 V DC
Supply voltage
11,5 V DC
Operating voltage
5,0 V DC
Supply voltage
16,0 V DC
Speed – motor
3000 r.p.m. (no load)
Transmission ratio
451 : 1 (6,6 r.p.m.)
Power
4,0 Nm (from spindle)
Primarily - power supply
230 V AC / 50Hz
Secondary voltage 1
9,0 V AC
Secondary voltage 2
15,0 V AC
Supply voltage
230 V AC / 50Hz
Power
1250 W
Supply voltage
230 V AC /50 Hz
Power
65 W / 15 – 17 bar (static)
Pump thermostat
Switching off limit
115 °C
Pressure valve
Opening pressure
10 bar
Supply voltage
230 V DC
Speed – motor
19.250 r.p.m. (no load)
Speed ratio - Gearbox
36 : 1 (~ 490 r.p.m.)
Display
Logic p.c.b. (Control unit)
Drive – brewing unit
Transformer
Heater
Pump
Grinding unit
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102
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