WMF 1200 S Manuale utente

coffee wakes up the world

Service manual

English

Coffee Machine

Series 1200 Edition 06.2012

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

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.

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: -/+

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: -/+

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.

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)

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.

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

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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