WMF 1200 S User manual

coffee wakes up the world
Service manual
English
Coffee Machine
Series 1200 Edition 06.2012

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WMF 1200 S Service manual edition 06/2012
1 Initial operation
2 Overview machine software
2.1 Menu
2.2 Set cup volumes 6
2.3 Change recipes 6
2.4 Set grinding degree at Espresso grinder (Perfect extraction) 6
2.5 Basic settings 7
2.6 Counters 7
2.7 Information 7
2.8 Care 8
2.9 Overview special features and settings 8
3 Settings via Servicetool
4 Important Information
4.1 Idle current grinder 10
4.2 Grinder setting 10
4.3 Depressurization 10
4.4 Replacing steam boiler 11
4.5 Replacing hot water boiler 11
4.6 Check and set pressure reducer 11
4.7 Descaling, Filter replacement, Filter rinsing 11
5 Error messages and events
5.1 Display messages 12
5.2 Error list 14
6 Milk nozzles
7 Maintenance concepts
7.1 Maintenance sets 17
Table of contents

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
1 Initial operation
During the initial operation the steam boiler respectively
the hot water boiler is filled automatically according to the
procedure described as follows.
Machines with steam boiler and hot water boiler:
The steam boiler is filled from the hot water boiler via the
steam boiler supply valve. The steam boiler supply valve is
opened until the steam boiler electrode is contacted. Then
the machine is heated up.
Machines with only hot water boiler:
As the level of these machines can not be detected, the
hot water boiler is filled for 300 s. The waste water is led
into the drip tray via the release valve. If the first filling
up is interrupted, it will be restarted by switching ON the
machine.
Condition
Machine is reset to customer setup
Perform the display-guided setup.
The following is set:
• language, switch off time, time, date
• filter capacity, replacement mode (customer or
service)
• self-service mode
If necessary update software to latest version
(Servicetool required)
Perform portioner calibration (Servicetool required)
Adjust boiler temperature and beverages according to
customer specifications
Afterwards a test brewing is made
Before regular operation:
rinse the pipes, dispense three cups of hot water
perform the cleaning cycle
After setup, the service technician must note the
following statement in the assembly invoice:
“At the end of operation, had to be turned off at source.
The user manual and accessories were given to the
customer.”
The customer must acknowledge this by his signature.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
2 Overview machine software
2.1 Menu
Enter the submenü:
Briefly touch P , then press +/- button.
select program
browse: -/+
cup volumes
OK: P browse: -/+
change recipes
OK: P change: -/+
set grinding degree
OK: P browse: -/+
cup volumes
select beverage
water volume: 37 ml
OK: P change: -/+
brewing test
test grinding degree
Beverage button
cup volume: 100%
OK: P test: beverage
ground coffee: 86%
OK: P change: -/+
min. pressure max.
foam volume: 14sec
OK: P test: beverage
grinding degree OK
test: P end: C
macch. pause: 20sec
OK: P change: -/+
milk volume: 14sec
OK: P change: -/+
rst coffee
OK: P change: -/+
preinfusion: on
OK: P change: -/+

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
basic settings
OK: P browse: -/+
counters
OK: P browse: -/+
information
OK: P browse: -/+
language: english
OK: P change: -/+
espresso 269
browse: -/+
V0.0x dd.mm.yyyy
browse: -/+
sw. off time: 0min
OK: P change: -/+
etc. all beverages WMF 1200S Basic
browse: -/+
switch on time: off
OK: P change: -/+
reset all counters?
No: C Yes: P
serial no. ######
browse: -/+
foam quality 100%
OK: P change: -/+
prod. date: mm.yyyy
browse: -/+
topping quality xxx
OK: P change: -/+
idle current gr#:##
browse: -/+
ECO-mode: 0
OK: P change: -/+
boiler temp.: 96°C
OK: P change: -/+
ofce functions
OK: P change: -/+
tim e hh:m m:ss
OK: P change: -/+
date dd.mm.yyyy
OK: P change: -/+
date / time: off
OK: P change: -/+
water lter: no
OK: P change: -/+
water hardn.: 20
OK: P change: -/+
audio signal: on
OK: P change: -/+
SB mode: no
OK: P change: -/+
display contrast
OK: P change: -/+
backup: no
OK: P change: -/+
change PIN
OK: P change: -/+

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
2.2 Set cup volumes
cup volumes
OK:P browse: +/-
Adjust: +/- button
Test beverage: beverage button
Save: P button
2.3 Change recipes
change recipes
OK:P browse: +/-
Adjust: +/- button
Test beverage: beverage button
Save: P button
• Water volume
• Ground coffee
• Preinfusion
• Milk volume
• Foam volume
• etc.
2.4 Set grinding degree at Espresso
grinder (Perfect extraction)
set grinding degree
OK:P browse: +/-
The brewing pressure changes with changing
the grinder degree setting.
The setting is correct if the brewing pressure
is indicated between 2/3 and 3/4 on the bar
during the test brewing.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
2.5 Basic settings
basic settings
OK:P browse: +/-
• Language
• Switch off time
• Switch on time
• Milk foam quality (optional)
• Topping quality (optional)
• ECO-mode
• Boiler temperature
• Office functions
• Time
• Date
• Date / time (display)
• Water filter
• Water hardness
• Audio signal
• SB mode (self-service mode)
• Display contrast
• Backup
• Change PIN
2.6 Counters
counters
OK:P browse: +/-
You can display the number of beverages
prepared here. The beverage counter can be
reset.
2.7 Information
information
OK:P browse: +/-
• Software version
• Machine name
• Machine number
• Date of production
• Idle current (grinders)

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
2.8 Care
The following procedures can be made via the care pad:
• Cleaning program
• Milk system rinsing
• Mixer rinsing
• Filter change
• Descaling
• Customer check up
• Brewing unit change
2.9 Overview special features and settings
Free flow milk foam dispensing Milk foam can be added by pressing the C-button.
Warm-up rinse Press care pad long.
Barista function Press the + / - button briefly: beverage can be
preselected „strong“ or „mild“.
S-M-L-Function Press the + / - button long: beverage can be
preselected „big“ or „small“.
Milk foam quality Milk foam quality can be adjusted in the basic
settings.
2nd beverage level 2nd beverage level can be activated via basic
settings / office functions. Beverages on the 2nd
level are activated with double click.
Deactivate milk beverages Milk beverages can be activated / deactivated via
basic settings / office functions.
Weigh grounds Ground coffee can be tested:
Empty grounds container, select beverage,
interrupt it by pressing C button after grinding.
Idle current grinder Idle current for grinders can be detected at the
machine:
Information w select idle current and press P
button for 2 s (therefore the grinder has to be
empty).
Backup The technician saves the data in a data backup. It
can be copied again into the working memory.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
3 Settings via Servicetool
The follwing settings can only be made via Servicetool
• Change button allocation / beverage names
• Enter or reset Service maintenance 1, Service
maintenance 2, Mixer maintenance and Revision
• Adjust machine configuration (e.g. activate grounds
disposal through counter)
• Test components
For more further details see Training manual Servicetool

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
4 Important Information
4.1 Idle current grinder
The idle current has to be detected again having replaced
the grinder, grinder disks or grinder motor.
Important: the grinder has to be completely empty.
Press the unlighted „P-button“ in the machine program
under Information / Idle current for 3 seconds. Thus the
hidden routine for idle current detection is started.
4.2 Grinder setting
Grinding degree setting
The grinder must be removed. The setting-wheel (with
worm gear) is dismantled.
Turn the grinding-disks towards each other until they
join and cannot be turned further by hand on the
driveshaft.
Fit the setting-wheel with the worm gear.
Espresso grinder (right side)
Open the setting-wheel by a total of 10 turns
This setting corresponds to setting no. 1 (espresso)
Cream grinder (left side)
Open the setting-wheel for a total of 18 turns
This setting corresponds to setting no. 5 = cream fineness.
Two turns of the setting-wheel are necessary to adjust
thefineness by one degree.
Machines with only one grinder are set to espresso
fineness.
4.3 Depressurization
Before opening the screw connections in the boiler water
system this routine must be run for safety reasons.
Press the unlighted P-button for 3 s in the machine
program under Information/Manufacturer number. Then
insert PIN number (if there is no PIN, press the topmost
beverage button, this corresponds to „00000“). So the
hidden depressurization routine is started.
Cappuccino valve opens (heating is off) until the
machine gets restarted.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
4.4 Replacing steam boiler
The steam boiler is filled from the hot water boiler via the
supply valve having replaced the steam boiler and switched
ON the machine. The supply valve is opened until the
electrode reports “contact”. Then the machine is heated up.
4.5 Replacing hot water boiler
The hot water boiler is not filled automatically after the
replacement. If the steam boiler electrode got in contact
with water, the steam boiler and hot water boiler would
heat up. Therefore keep the heating unplugged having
replaced the hot water boiler. Then fill up the hot water
boiler via the Servicetool / component test until hot water
runs out of the spout:
• Voltage 24 V OK
• Hot water valve
• Oscillation pump
• machines with constant water supply are equipped with
an additional hot water supply valve
Then unplug the coffee machine mains plug and plug the
hot water boiler mains plug in the CPU.
4.6 Check and set pressure reducer
Press the unlighted P-button for 3 s in the machine
program under Information/Production date. So the hidden
routine for setting the pressure reducer is started.
Remove screw plug on water tank union.
Screw in auxiliary nipple (33.2320.8000) for plug
connector adapter.
Place auxiliary tool on union.
keep the unlighted P-button pressed in the machine
program under Information/Production date. After 3
s the boiler infeed valve opens; Read pressure from
manometer and set to 1.8 bar.
The boiler infeed valve closes again when P-button is
released
Remove setting controller and remove auxiliary nipple.
Replace screw plug.
4.7 Descaling, Filter replacement, Filter
rinsing
Information see User Manual.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
5 Error messages and events
5.1 Display messages
Operation messages
rell water tank
Water tank is empty or not inserted.
h e a tin g u p ...
When temperature in hot water boiler or steam
boiler is too low.
warm rinse
in progress
During automatically (after first heating-up)or
manually warm-up rinse (via rinsing button).
rell beans
left
Idle current at bean hopper left is detected.
rell beans
right
Idle current at bean hopper right is detected.
empty grounds cont.
Grounds container is full
(Default 200 seconds grinding time).
Cleaning messages
replace brewing
unit
Brewing unit not detected after closing the door
or reinserting the grounds container.
empty drip tray
Displayed after switching machine on: machines
without drain connection and after cleaning
with switching off.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
Maintenance and Care messages
Customer check-up
After 15.000 brewings
Service maintenance 1
After 1 year
Service maintenance 2
After 2 years
Revision
After 6 years
Mixer maintenance
After 6.000 beverages
Replace water lter
Replace the water filter (machines with constant
water supply and tank)
Descale machine
Carry out machine descaling.

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
5.2 Error list
Display
Description
F2 Brewer without electricity
F5 Brewer shutoff
F6 Brewer over current
F7 Brewer timeout (no electricity)
F26 Portioner 1 current malfunction
F36 Current malfunction Portioner 2
F87 Boiler sensor damaged
F88 boiler excess temperature
F89 boiler heating time
F125 EEprom missing or defective
F126 Front panel / CPU Communication error
F135 Motor driver error (grinder or brewer motor)
F161 flowmeter malfunction during brewing
F162 flowmeter malfunction during cleaning
F163 flowmeter malfunction during checking
F164 flowmeter malfunction during hot water dosage
F165 flowmeter malfunction during choc dosage
F166 flowmeter malfunction during steam boiler
feeding
F167 flowmeter malfunction during descaling
F186 timeout during steam boiler filling
F187 Steam boiler sensor damage
F188 Excess temperature in steam boiler
F189 Heating-time steam boiler

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
6 Milk nozzles
Milk nozzles for WMF coee machines
These milk nozzles correspond to the provided milk nozzle in maintenance kits
1,00
1,05
1,10
1,15
1,20
1,30
1,40
1,50
1,60
1,65
1,70
1,80
1,90
2,00
2,10
2,20
3,00
3395137000
3395900100
3395097100
3395106100
3370071714
3323178000
3395169000
3320315100
3395213000
3395214000
3320314100
3395215000
3324101000
3313843100
3324102000
3324103000
3320460100
WMF 1200S
x x x x
1. step: determine the adequate milk nozzle (at the milk foamer) rst by means of the
milk storage temperature (rst use one of the nozzle enclosed in the delivery)
2. step: now select the optimal milk nozzle by means of required dispensing temperature of the
milk foam (rst try the nozzles enclosed in the delivery). If the required milk foam temperature can not be achieved, choose another nozzle.
Information: the temperature can be inuenced additionally by setting the foam quality (settable in the submenu).
If no cooler is used /no Plug&Clean
adapter is used, plug on this milk nozzle at
the end of the hose
higher milk storage
temperature
low milk
foam temperature
low milk storage
temperature
high milk
foam temperature
black
yellow
gray
orange
gray-blue
green
white
brown
caramel
honey yello
w
transparent
lightgreen
red
blue
pink
purple
beige

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
7 Maintenance concepts
0
15.000
30.000 45.000 60.000 75.000 90.000
105.000 120.000 135.000 150.000
0 1 2 3 4 5
Brewings
Years
30000/Year
15000/Year
MS1
MS1+MS2+Brewer
MS1
MS1+MS2+Brewer
MS1
MS1+Brewer
MS1+MS2+Brewer
MS1+Brewer
MS1+MS2+Brewer
CK
CK
CK
CK
CK

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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
7.1 Maintenance sets
Customer check-up kit (CK)
every 15.000 brewings
Service maintenance 1 (MS 1)
once a year (contains customer check-up kit)
Service maintenance 2 (MS 2) every 2 years
Brewer
33.2823.6199
Set Choc
33.2828.6100
Overview maintenance sets
WMF milk system
Venturi
WMF Topping
optimized milk
foamer
Topping
2,2 kW
Customer check-up kit 33.2878.3000 33.2878.3000
Service maintenance 1 33.2878.4000 33.2878.4000
Service maintenance 2 33.2878.5000 33.2878.6000