WMF Presto User manual

coffee wakes up the world
Service Manual
English
Coffee Machine
Series 1400 Edition 11.2011

2
WMF presto Service manual edition 11/2011
1 Customer setup
1.1 Setup program 4
2 Software service info
2.1 Software service info overview 5
2.2 Notes for service info 5
2.2.1 Where is specific maintenance information displayed?. . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.2 Where is cleaning info displayed? .........................................5
3 Software machine data
3.1 Machine data overview 6
3.2 Submenu counter 6
3.3 Submenu Service date 6
3.4 Temperature submenu 7
3.5 Submenu cleaning 8
3.6 Submenu error list 8
3.7 Submenu portioner 8
3.8 Submenu milk 8
3.9 Submenu access control 8
Maintenance messages in Key Operator mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Customer check-up ......................................................9
3.10 Submenu standards factoryservice/customer 9
Factoryservice/customer menu 1
Factoryservice/customer menu 2
Factoryservice/customer menu 3
Factoryservice/customer menu 4
Factoryservice/customer menu 5
Factoryservice/customer menu 6
3.11 Additional setting options via laptop (KonfigTool) 12
Page software update
Page cleaning
Page maintenance dates
Page PIN
Page grounds container
4 Software components test
4.1 Component tests overview 14
4.2 Submenu brewer motor 14
4.3 Submenu portioner 14
4.4 Valves 15
4.5 Submenu SBHWB group (steam boiler and hot water boiler) 15
4.6 Submenu control elements 15
4.7 Current supply 15
4.8 Backup battery 16
4.9 Display illumination 16
4.10 Grounds container 16
4.11 Fan16
4.12 Power status 16
4.13 Submenu choc dispenser / topping 16
Table of contents

3
WMF presto Service manual edition 11/2011
5 Software service routines
5.1 Service routines overview 17
5.2 First Run up 17
5.3 Idling current grinder 18
5.4 Filling the boiler 18
5.5 Filling the steam boiler 18
5.6 Exchanging control battery at F 157 19
5.7 Check pressure reducer 19
5.8 Depressurization 19
5.9 Descaling 19
5.10 Filter replacement 19
6. Beverage data
6.1 Beverage data overview 20
Overview of beverage data main menu
e.g. cappuccino ........................................................20
Overview of beverage data main menu
e.g. hot water ..........................................................20
6.2 Additional laptop setting options (KonfigTool) 20
7 Error messages and events
7.1 Display messages 21
7.2 Error list 22
7.3 Reasons for reset 26
7.4 Standby causes 26
8 Mechanical settings
8.1 Grinder setting (coarse - fine) 27
8.2 Setting pressure reducer 28
9 Milk nozzles
10 Maintenance concepts 15.000 brewings
10.1 Customer check-up 30
Customer check-up routine
10.2 Service-maintenance 31
10.2.1 Maintenance sets for service-maintenance 2/30.000 (Service level 2) ...........31
10.2.2 Service/maintenance routine 2/30.000
(Service level 2) .............................................................34
10.3 Safe&are (Revision) 34
Table of contents

4
WMF presto Service manual edition 11/2011
WMF presto Service Manual
1 Customer setup
After setup, the service technician must note the
following statement in the assembly invoice:
“At the end of operation, machine has to be turned off at
source. The user manual and accessories were given to the
customer.”
The customer must acknowledge this with his signature.
1.1 Setup program
Condition:
Machine is reset to customer setup and connected to the
power supply.
Run display-guided setup.
The following settings are made:
• Language
• Descaling filter yes/no
• Descaling filter range
• Descaling filter replacement mode
(customer or service)
• Portioner calibration
Update software to current status
(only possible with laptop program “KonfigTool”)
Set beverages according to customer specifications
(Customer setting  recipes/buttons or by „KonfigTool“
 beverage configuration)
Enter service point
(only possible with “KonfigTool”).
Save data  Defaults  CustomerService
Backup machine data on laptop
Additional settings for recipes
after the service PIN is entered

5
WMF presto Service manual edition 11/2011
WMF presto Service Manual
2 Software service info
2.1 Software service info overview
2.2 Notes for service info
2.2.1 Where is specific maintenance
information displayed?
• Setup start date info service
• Date of next maintenance info service
• Next descaling care info descaling
• Next filter change care info filter
• Additional maintenance counters under machine data
Service date
2.2.2 Where is cleaning info displayed?
• Time elapsed since last cleaning care info cleaning
(how long since last cleaning)
• Last 100 cleaning operations with date and time care
report
Service info

6
WMF presto Service manual edition 11/2011
WMF presto Service Manual
3 Software machine data
3.1 Machine data overview
3.2 Submenu counter
3.3 Submenu Service date
With click on „OK“, the actual date will be entered as the last visit.
With click on „OK“ the error list and FIFO will be erased.
On these three displays all possible service actions are listed. They can be looked at and
can be reset if carried out.
Brewings since last customer check-up /Brewings to Customer check-up
Date of next Customer check-up (MM.JJJJ).
The customer check-up can be reset only here.
Machine data

7
WMF presto Service manual edition 11/2011
WMF presto Service Manual
Service Maintenance and Revision:
Along the lines of customer check-up, the service dates,
service maintenance and revision are composed. Revision is
only requested after some time (every 6 years).
Softener exchange:
After confirming with „Yes“ the water filter will be rinsed.
Rinse filter:
Mixer:
Every 6000 servings, the mixer reports a service message.
The counter of the mixer can be looked at and reset.
3.4 Temperature submenu
Setting range 80 to 100°C, default 96° C
Setting range 110 to 130° C, default 127° C
Changing the steam boiler temperature leads to great
changes in the dosage of milk and milk foam. Changes are
not recommended.

8
WMF presto Service manual edition 11/2011
WMF presto Service Manual
3.5 Submenu cleaning
Number of cleanings performed and to be performed
Number of mixer rinsings performed
Number of milk system cleanings performed
Time until request for cleaning/forced cleaning
Hardware for foamer rinsing available?
Delay in foamer rinsing after last beverage dispensing
Switch warning signal before foamer rinsing on/off
3.6 Submenu error list
Delete individual errors: tap on the line
Delete complete error memory: tap C
3.7 Submenu portioner
Example right grinder
Idling current (determined via service routine)
Maximum dosage amount in 1/10 seconds
Only the maximum dosage amount can be set for the
powder portioner (default 150). A detection of the idling
current is not possible.
3.8 Submenu milk
in future available
empty message via sensor
cooler next to or below
3.9 Submenu access control
The settings correspond to the default of the previous
standard setting. However, they can now be changed /
assigned independently of each other.
Malfunction and events list see
chapter Error list

9
WMF presto Service manual edition 11/2011
WMF presto Service Manual
if „no“ is activated: no access to component test, service routines and
counter.
if „yes“ is activated: customer check-up can be performed.
if „yes“ is activated: water filter can be exchanged and rinsed.
If activated („yes“), the key operator is able to
• do the descaling (turbo descaling)
• carry out and reset the customer check-up
• exchange and rinse the scale filter
• access the component test
• access the service routines
• access the counters
Maintenance messages in Key Operator mode
Customer check-up
Maintenance after 1 year or 15,000 brewings
Tasks to be performed analogy to customer check-up
3.10 Submenu standards factoryservice/
customer
After tapping “self-detect” is first run automatically. All
components operating on 24 V or 30 V are automatically
addressed. The components are automatically identified.
During self-detect the grounds container must be in
place, the adjustable screen closed or the 24/30 V circuits
of the components are interrupted.
Factoryservice/customer menu 1
Configuration of grinders
Configuration of powder portioner
Heating capacity
Configuration of grinders is registered automatically (see
chapter portioner).
Configuration of powder portioner is registered
automatically (see chapter portioner).
Heating capacity can be changed as required.
Reset with C on display see
machine data  service date
 Customer check-up
or Menu Care  Customer
check-up
See chapter engineering, portioner
in the training manual

10
WMF presto Service manual edition 11/2011
WMF presto Service Manual
Factoryservice/customer menu 2
Steam boiler existent
Steam dispensing valve existent
Fresh milk valve (cappuccino valve) existent
Steam boiler is registered automatically by its intake valve
(See chapter boiler water system).
Steam dispensing valve is automatically detected
(See chapter boiler water system).
Milk is automatically detected
(See chapter boiler water system).
Factoryservice/customer menu 3
Self-Service mode activated?
Water tank / water infeed
Drain drip tray existent? (changes cleaning and descaling )
Self-Service mode
Default at „No“ Default at „Yes“
2nd level (Yes/No) depending on configuration No
On/Off button (direct/through PIN) directly directly
Warm rinse pad (active/inactive) active inactive
Barista pad (active/inactive) active inactive
Cancel Beverage (Yes/No) active inactive
Menu pad (immediately/delayed) immediately delayed
Error message (normal/symbol) normal symbol
Water tank/ Water infeed is automatically detected by
nonexistent intake valve. The external tank can be selected.
By detecting the intake valve the display shows constant
water. Option Aquaflex / technical insert (mobile station)
can be selected.
Drain of drip tray must be correctly adjusted manually.
See chapter Boiler water systems
in the training manual
Part 2 Engineering
See chapter Boiler water systems
See chapter drip tray
in the training manual
Part 2 Engineering

11
WMF presto Service manual edition 11/2011
WMF presto Service Manual
Factoryservice/customer menu 4
Beverages configured on 2 levels
Manual insert for coffee and cleaning or cleaning only
Accounting via accessory device via MDB or serial connection
It only makes sense to adjust the 2. level if milk is
available.
Tablet insert (“Handrein”) must be set manually for more
than 2 portioners, for up to two portioners manual insert
coffee (HandKaff).
Accounting must be set manually
(MDB or serial connection).
Factoryservice/customer menu 5
Operating mode grounds container: external = grounds disposal
through counter
Preselect-button for decaf brewing instead of steam button
Daylight saving time selected?
Grounds disposal through counter must be correctly set
manually. (default = internal)
Decaf must be set manually.
Summertime automatic change to daylight saving time can
be activated.
Factoryservice/customer menu 6
Option Plug&Clean existant?
Accept
Option Plug&Clean can be activated
Safety queries follow acceptance.
See user manual and additional
user manual for accounting.
See user manual

12
WMF presto Service manual edition 11/2011
WMF presto Service Manual
Safety queries upon acceptance of the variations:
The counters should only be reset in exceptional cases.
If a portioner was added or set to “decaf” the factory
default settings for the beverages should be used.
Maintenance after 6,000 portionings mixer
Parts to be replaced:
• the mixer unit
• the mixer valve
Replace battery control at F 157
The battery of the control unit must be replaced when
the error message F 157 is reported
Procedure for battery replacement analogy to service-
maintenance, error message report F 157.
3.11 Additional setting options via laptop
(KonfigTool)
Page software update
• Select company logo
• Load selectable languages from the display into the
machine (aside from German and English a maximum of
five additional languages)
• Load predefined machine
Page cleaning
• Deactivate forced cleaning
• Set last descaling date
• Deactivate display of descaling message
If these settings are changed customers must principally
be made aware of the risks of clogging and malfunctions
due to descaling and lack of cleaning in writing.
Reset with C on display see
machine data Service date
Mixer
Resetting of error list is automatic
when battery is replaced.
The notices to the customer
regarding warranty in chapter
safety in the user manual apply
regardless of the settings for
cleaning and descaling.

13
WMF presto Service manual edition 11/2011
WMF presto Service Manual
Page maintenance dates
• Contact data of service technician with phone number
Page PIN
• Block menu items
• Set accounting of unit numbers to “not deletable”
Page grounds container
• Set capacity

14
WMF presto Service manual edition 11/2011
WMF presto Service Manual
4 Software components test
4.1 Component tests overview
Depending on the machine configuration the following
tests are available in the software:
4.2 Submenu brewer motor
Run brewer to end switch
Run brewer up
Run brewer down
End switch: 0001 end switch contacted
Current (mA): Display value during procedure
4.3 Submenu portioner
Test right grinder
Test left grinder
Current (mA): Value during portioning procedure is
displayed
During the test the grounds container must be in
position and the adjustable screen closed as the brewer
receives the coffee powder during the test and dumps it
afterwards.
Components

15
WMF presto Service manual edition 11/2011
WMF presto Service Manual
4.4 Valves
During the test additional data is displayed, e.g. the
maximum current consumption of the valve(s) or the
number of flowmeter pulses.
When testing the brewer valve the brewer must be in
functioning condition as it receives the brewing water
during the test and discharges it afterwards.
4.5 Submenu SBHWB group (steam boiler
and hot water boiler)
Additional data during tests:
Heating units: display of condition and current
temperature.
Level/feeding:
- - button: The level in the steam boiler is lowered via the
steam valve.
+ - button: The level in the steam boiler is raised by the
supply valve.
Liquid level: the current capacitative value of the sound
is displayed. The trigger value at which the steam boiler is
detected as “full” is 180 digits.
Normally the “full” value is at 212 digits.
4.6 Submenu control elements
Beverage button LEDs are subsequently addressed
Test beverage buttons by pushing them
Test touch fields on the display by touching them
4.7 Current supply
Switch the 24/30 V circuits on and off from the mains.

16
WMF presto Service manual edition 11/2011
WMF presto Service Manual
4.8 Backup battery
During the test the battery is short-circuited. This
procedure shortens battery life.
4.9 Display illumination
The display illumination can be switched off for testing.
4.10 Grounds container
Display if the micro switches switch the 24V circuits of the
grounds container and the adjustable screen.
4.11 Fan
Test of function and current consumption
4.12 Power status
Report “power failure” to the control unit
4.13 Submenu choc dispenser / topping
Test choc valve
Test the portioner, the choc valve is also addressed
Test mixer motor

17
WMF presto Service manual edition 11/2011
WMF presto Service Manual
5 Software service routines
5.1 Service routines overview
5.2 First Run up
The software is restarted, with a “reset event” entered
into the laptop ring memory (see chapter “service”, reset
events).
The cleaning obligation is reset as if a cleaning cycle had
just been done.
A cleaning cycle can be interrupted.
A descaling cycle can be interrupted.
Attention: If a cleaning or descaling cycle has been
interrupted adequate measures must be taken to ensure
that no residues of cleaning or descaling agents remain
in the machine. In this case cleaning or descaling must be
repeated.
The reset of the customer settings program is treated in
the same way by the software, however does not reset the
cleaning and descaling obligations.
Service routines
See chapter software, First Run up
in the training manual
part 4 software

18
WMF presto Service manual edition 11/2011
WMF presto Service Manual
5.3 Idling current grinder
For a correct “empty” report the grinder idling current
must be entered into the system as base following the
entering of the factory values or motor replacement. This is
done via a service routine.
Notices for technicians
The idling current must by all means be determined with
the grinder completely empty.
5.4 Filling the boiler
At the first setup of a machine delivered by the factory
the first filling is done automatically as part of the setup
routine.
The boiler is filled for 300 seconds. It makes no difference
if it has already been filled or not. Excess water is
discharged into the drip tray via the expansion tube.
In normal operation an empty boiler does not
automatically fill itself when the steam boiler electrode
is touched. In machines without steam boiler filling is
always run for 300 seconds during first putting into
operation.
5.5 Filling the steam boiler
At the first setup of a machine delivered by the factory
the first filling is done automatically as part of the setup
routine.
The steam boiler is filled via the supply valve until the
electrode reports “contact”. The air escapes via the
steam dispensing or cappuccino valve (according to
specifications) as filling an empty boiler up to the electrode
is impossible against the air cushion.
Without de-aerating via this routine (e.g. following
replacement) a boiler cannot be filled against an air
cushion inside.
See chapter software, grinder
idling current
part 4 software
See chapter engineering, portioner,
grinder with motor
in the training manual
Part 2 Engineering

19
WMF presto Service manual edition 11/2011
WMF presto Service Manual
5.6 Exchanging control battery at F 157
At error message 157 the control battery must be
replaced.
The notices on the display are to be followed:
All data is stored in the service memory.
Disconnect machine from mains
Exchange battery
As soon as the machine is reconnected to the mains all
data is automatically loaded into the service memory.
5.7 Check pressure reducer
(only machines with constant water supply)
Procedure see training manual chapter 2/3.3 Setting
pressure reducer
5.8 Depressurization
Temperature and pressure are reduced under control, also
in cases of overpressure, e.g. following a malfunction of
the heating switch and overheating of the boilers.
Before opening the screw connections in the boiler water
system this routine must be run for safety reasons.
5.9 Descaling
Constant water supply: see User Manual Care
External tank / technical group: see Info letter 2011-33
5.10 Filter replacement
The same function as in the customer care menu.
See trainin manual chapter 2/3.3
Setting pressure reducer

20
WMF presto Service manual edition 11/2011
WMF presto Service Manual
6. Beverage data
6.1 Beverage data overview
Overview of beverage data main menu
e.g. cappuccino
Shift key: active = beverage on the 2. level is set.
General: Set recipe, portioner, amounts of powder and
water.
Brewing: Set pre-treatment, dry pressing pause, multiple
pressing and water amount for warm rinse.
Milk: set dosage time 1 (e.g. milk) and 2 (e.g. foam) and
beverage-specific foam quality.
Overview of beverage data main menu
e.g. hot water
General: Set recipe and dosage variation
Water: Set dosage amount
6.2 Additional laptop setting options
(KonfigTool)
Page customer\general item pretreatment:
• User-defined pretreatment setting possible
(Pressing, pre-infusion, wet pressing, warm rinse)
Page customer\general item variety text:
• Random variety text
Page general:
• Multiple brewing (e.g. for a pot of coffee)
Beverage data