WMF Presto User manual

coffee wakes up the world
Service manual
English
03.02.001
Coffee Machine
Series 1400 Edition 08.2007

2WMF presto Service manual edition 08/2007
1 Customer setup
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 Whereiscleaninginfodisplayed?.........................................5
3 Software machine data
3.1 Machine data overview 6
3.2 submenu counter 6
3.2.1 Maintenancecountersoverview...........................................6
Machine maintenance counters (always valid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mixermaintenancecounter ...............................................7
Grinder maintenance counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Choc portioner maintenance counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Topping portioner maintenance counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Last maintenance date submenu 8
3.4 Temperature submenu 8
3.5 submenu cleaning 9
3.6 submenu error list 9
3.7 submenu portioner 9
3.8 submenu standards factoryservice/customer 10
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
3.9 submenu Key Operator 12
Key Operator mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance messages in Key Operator mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Customercheck-up.....................................................13
Summaryofmaintenancemessages:.......................................14
3.10 Additional setting options via laptop (KonfigTool) 15
Page software update
Page cleaning
Page maintenance dates
Page PIN
Page grounds container
4 Software components test
4.1 Component tests overview 16
4.2 submenu brewer motor 16
4.3 submenu portioner 16
4.4 Valves 17
4.5 submenu SBHWB group (steam boiler and hot water boiler) 17
4.6 submenu control elements 17
4.7 Current supply 17
4.8 Backup battery 18
Table of contents

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4.9 Display illumination 18
4.10 Grounds container 18
4.11 Fan18
4.12 Power status 18
4.13 submenu choc dispenser / topping 18
5 Software service routines
5.1 Service routines overview 19
5.2 First Run up 19
5.3 Idling current grinder 20
5.4 Filling the boiler 20
5.5 Filling the steam boiler 20
5.6 Exchanging control battery at F 157 21
5.7 Depressurization 21
5.8 Descaling 21
5.9 Filter replacement 21
5.10 Filter rinse 21
6. Beverage data
6.1 Beverage data overview 22
Overview of beverage data main menue.g. cappuccino. . . . . . . . . . . . . . . . . . . . . . . . . 22
Overview of beverage data main menue.g. hot water . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2 Additional laptop setting options (KonfigTool) 22
7 Error messages and events
7.1 Display messages 23
7.2 Error list 24
7.3 Reasons for reset 28
7.4 Standby causes 28
8 Mechanical settings
8.1 Grinder setting (coarse - fine) 29
8.2 Setting pressure reducer 30
9 Maintenance schedules
9.1 Customer check-up 31
Customer check-up routine
9.2 Service-maintenance 31
9.2.1 Maintenance sets (Service level 2)for service-maintenance 2/30.000 . . . . . . . . . . . 31
9.2.2 Service/maintenance routine 2/30.000 (Service level 2) . . . . . . . . . . . . . . . . . . . . . . . 33
Machine with fresh milk, withoutchoc/topping, water tank model
Additional work for machines with choc/topping
Additional work for worn grinding-disks
9.3 Revision 34
9.3.1 Maintenance sets for revision 6/90.000(Service level 3). . . . . . . . . . . . . . . . . . . . . . . 34
9.3.2 Revisionroutine ......................................................37
9.3.3 Coffee machine revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table of contents

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1 Customer setup
Condition
Machine is reset to customer setup
Display-guided setup according to brief instructions.
Check correct setting of water hardness or descaling
filter and range of descaling filter.
If necessary update software to latest version (laptop
program KonfigTool required)
Adjust boiler temperature and beverages according to
customer specifications
(Customer Settings recipes/buttons, service program
beverage data or KonfigTool beverage data)
Enter service point (KonfigTool required)
Store data in service memory (service program
machine data standards customerService)
Backup machine data in laptop memory
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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Reset automatic customer setup.
See general information
in the training manual
Part 5 Service
Reset automatic customer setup.
See general information
in the training manual
Part 5 Service

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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 service
Date of next maintenance service
Next descaling care info descaling
Next filter change care Info filter
Additional maintenance counters under machine data
counters brewer
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 infoService info

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3 Software machine data
3.1 Machine data overview
3.2 submenu counter
3.2.1 Maintenance counters overview
Up to software version 3.1.1:
The limits of the counters cannot be set.
From software version 3.2.1:
The limit for customer check-up can be set to 15,000
brewings by KonfigTool.
Machine maintenance counters (always valid)
Counters relevant to the maintenance information in the
brewer menu.
Customer check-up (10,000 brewings)
Maintenance service (30,000 brewings)
Revision (90,000 brewings)
Machine dataMachine data
Reset by tapping on the
respective line
Reset by tapping on the
respective line

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Mixer maintenance counter
Counter relevant to the mixer maintenance information in
mixer menu (maintenance message only in Key Operator
mode).
Mixer maintenance (18,000 cycles)
1 choc cycle counts 3
1 topping cycle counts 1
Grinder maintenance counter
Counter relevant to grinder maintenance in portioner
menu (maintenance message only displayed in Key
Operator mode).
Control display for grinder disk
For the maintenance report
Choc portioner maintenance counter
Counter relevant to choc portioner maintenance in
portioner menu (maintenance message is only displayed in
Key Operator mode).
Choc maintenance (36,000 dosages)
Topping portioner maintenance counter
Counter relevant to topping portioner maintenance in
portioner menu (maintenance message is only displayed in
Key Operator mode).
Topping portioner maintenance
(108,000 dosages).
With twin topping, the portioner and the motor should be
replaced as soon as the first counter for choc or topping
reaches the limit.
Switching off service
messages via KonfigTool
page service dates (from
version 03.02.01)
Switching off service
messages via KonfigTool
page service dates (from
version 03.02.01)
Topping contains no sugar. Thus
the portioner contains four times
more dosages than choc.
Topping contains no sugar. Thus
the portioner contains four times
more dosages than choc.

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3.3 Last maintenance date submenu
The service date does not lead to a maintenance message.
Enter maintenance date
Set interval for customer check-up
After entering service date the following requests are
displayed:
3.4 Temperature submenu
Setting range 85- 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.
See chapter Error list See chapter Error list

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3.5 submenu cleaning
Number of cleanings performed and to be performed
Number of mixer rinsings performed
Number of milksystem 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.
Malfunction and events list see
chapter Error list
Malfunction and events list see
chapter Error list

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3.8 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
Steam boiler existent
Configuration of grinders is registered automatically (see
chapter portioner).
Configuration of powder portioner is registered
automatically (see chapter portioner).
Steam boiler is registered automatically by its intake valve
(See chapter boiler water system).
Factoryservice/customer menu 2
Steam dispensing valve existent
Fresh milk valve (cappuccino valve) existent
Aquaflex
Steam dispensing valve is automatically detected
(See chapter boiler water system)
Milk is automatically detected
(See chapter boiler water system)
Aquaflex The machine can be operated as fresh water or
water tank version by the customer. This option can only
be set if water tank was detected as “no”.
See chapter engineering, portioner
in the training manual
See chapter engineering,
boiler/steam boiler
in the training manual
Part 2 Engineering
See chapter engineering, portioner
in the training manual
See chapter engineering,
boiler/steam boiler
in the training manual
Part 2 Engineering
See chapter Boiler water systems
in the training manual
Part 2 Engineering
See chapter Boiler water systems
in the training manual
Part 2 Engineering

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Factoryservice/customer menu 3
Must be set to “no” (not applicable for version >03.02.01)
Water tank existent?
Drip drain existent? (changes cleaning and descaling )
Table water may not be set, only existent in software
versions 3.1.1 and 3.2.1 (was not further pursued and
developed)
Water tank is automatically detected by nonexistent
intake valve (no = water tank machine)
(See chapter boiler water system)
Drain of drip tray must be correctly adjusted manually.
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
(from 03.02.01)
Accept
Grounds disposal through counter must be correctly set
manually. (default = internal)
Decaf must be set manually.
Safety queries follow acceptance.
See chapter Boiler water systems
See chapter dripping-pan
in the training manual
Part 2 Engineering
See chapter Boiler water systems
See chapter dripping-pan
in the training manual
Part 2 Engineering
See user manual and additional
user manual for accounting.
See user manual and additional
user manual for accounting.
See user manual See user manual

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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.
3.9 submenu Key Operator
Key Operator mode
If the Key Operator mode has been activated in machine
data by the factory or the authorized maintenance
point the machine automatically reports the individual
components to be prophylactically exchanged due to wear.
The Key Operator also has access to maintenance routines,
component tests and the counters in the machine data.
This access is protected by a customer check-up PIN.
If Key Operator is activated only the cleaning cycles are
available to the customer.
Customer check-up, filter change and filter rinsing are
available in the “service routines” menu.
Key Operator: YES
Only cleaning procedures are
available in the care menu
Key Operator: YES
Only cleaning procedures are
available in the care menu
Additional Customer service PIN
with Key Operator = YES
Additional Customer service PIN
with Key Operator = YES

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Maintenance messages in Key Operator mode
Customer check-up
Maintenance after 10,000 / 15,000 brewings
Tasks to be performed analogy to customer check-up
Service-maintenance
Maintenance after 30,000 brewings
The following components are to be replaced:
Brewing unit
Brewing valve
Release valve
Hot water valve
Safety valves
Optional:
Cappuccino valve
Revision
Maintenance after 90,000 brewings
Depending on qualification this maintenance is performed
by the WMF service or by the central unit.
Maintenance after 90,000 grindings
Parts to be replaced:
the respective grinder
the grinder drive
•
•
•
•
•
•
•
•
Reset with C on display counter see
machine data
 counter  brewer  gasket
or
Menu Care  Customer check-up
Reset with C on display counter see
machine data
 counter  brewer  gasket
or
Menu Care  Customer check-up
Reset with C on display counter
Counters see machine data
 counter  brewer  brewer
Reset with C on display counter
Counters see machine data
 counter  brewer  brewer
Reset with C on display
Counter see machine data
 counter  drive
Reset with C on display
Counter see machine data
 counter  drive
Reset with C on display Counter
see machine data
 counter  portioner
Reset with C on display Counter
see machine data
 counter  portioner

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Maintenance after 6,000 portionings choc
Maintenance after 18,000 portionings topping
Parts to be replaced:
the mixer unit
the mixer valve
In choc the counter counts 3 units per operation so that
the wear limit of both versions is at the counter reading
of 18,000.
Maintenance after 36,000 portionings choc
Maintenance after 108,000 portionings topping
Parts to be replaced:
Powder portioner
Portioner drive
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.
Maintenance operations in Key Operator mode
The replacement of components is described in the
chapters service-maintenance and revision.
Summary of maintenance messages:
•
•
•
•
Reset with C on display counter see
machine data CounterMixer
Reset with C on display counter see
machine data CounterMixer
Reset with C on display
counter see machine data
 counter  portioner
Reset with C on display
counter see machine data
 counter  portioner
Resetting of error list is automatic
when battery is replaced.
Resetting of error list is automatic
when battery is replaced.

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3.10 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
(from version 03.03.01)
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.
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
•
•
•
•
•
•
•
•
•
•
The notices to the customer
regarding warranty in chapter
safety in the user manual apply
regardless of the settings for
cleaning and descaling.
The notices to the customer
regarding warranty in chapter
safety in the user manual apply
regardless of the settings for
cleaning and descaling.

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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
Test powder portioner for choc or topping-
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.
ComponentsComponents

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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.

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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 24 V 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

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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 routinesService routines
See chapter software, First Run up
in the training manual
part 4 software
See chapter software, First Run up
in the training manual
part 4 software

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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
See chapter software, grinder
idling current
part 4 software
See chapter engineering, portioner,
grinder with motor
in the training manual
Part 2 Engineering