Wmf 5000s User manual

WMF 5000S

Service manual

KMT Technical Support

Revision: 03/2015

Rev. 01

Preface 2

Preface

This service manual contains the most important information that is relevant to typical service and maintenance activities.

If significant changes are made, then this document, along with the referenced attachments and related documents, will be updated and provided to registered

users for download in the service center.

Attachments.

WMF Dynamic Milk Setting instructions milk and foam

WMF 5000S setting instructions milk and foam, Easy Milk

WMF 5000S Software description part 1

WMF 5000S Software description part 2

WMF 5000S event and error list

Applicable documents

Customer documents

Planning information

User manual

Technician documents

Piping schematics

Electrical schematics

Wiring schematics

Spare parts lists

Technical circulars

Technical service instructions: These documents are subject to change. Please try to keep these documents up-to-date.

Planned contents which is awaiting implementation/remain unavailable appears in italics in the document.

Further detailed information are distributed in paper form as part of the face-to-face training sessions; however, they are not available for download

unencumbered.

Change history 3

Change history

Rev. 01 1st edition for series launch

Table of Contents 4

Table of Contents

Preface.............................................................................................................................................................................................................................................................. 2

Change history................................................................................................................................................................................................................................................. 3

Table of Contents............................................................................................................................................................................................................................................ 4

1Installation and commissioning........................................................................................................................................................................................................ 6

1.1Customers on-site connection requirements .........................................................................................................................................................................................................................6

1.2Hardware connection and preparatory work .........................................................................................................................................................................................................................7

1.2.1General tasks......................................................................................................................................................................................................................................................................................7

1.2.2Recommended water filter ...........................................................................................................................................................................................................................................................7

1.3Initial start-up with the aid of the technical information ................................................................................................................................................................................................8

1.3.1Goal of the technician information...........................................................................................................................................................................................................................................8

1.3.2Workflow, technician info: ...........................................................................................................................................................................................................................................................8

2Service................................................................................................................................................................................................................................................ 11

2.1Brewer............................................................................................................................................................................................................................................................................................... 11

2.2Distance between angle sensor and brewer spindle (magnet) ...................................................................................................................................................................................... 12

2.3Espresso pump................................................................................................................................................................................................................................................................................14

2.4Pressure reducer setting ............................................................................................................................................................................................................................................................. 15

2.5Grinders ............................................................................................................................................................................................................................................................................................ 16

2.5.1Grinder - grinding degree setting ........................................................................................................................................................................................................................................... 16

2.6Power stage..................................................................................................................................................................................................................................................................................... 17

2.7Front panel ...................................................................................................................................................................................................................................................................................... 17

Table of Contents 5

2.8Power supply .................................................................................................................................................................................................................................................................................. 18

2.9Ventilation system ........................................................................................................................................................................................................................................................................ 19

2.10Power class......................................................................................................................................................................................................................................................................................20

2.11Execution of under-machine cooler /under-counter cooler..........................................................................................................................................................................................21

3Maintenance concept ...................................................................................................................................................................................................................... 22

3.1Overview of maintenance activities ....................................................................................................................................................................................................................................... 22

3.2Installation of maintenance packages required for different brewing times ..........................................................................................................................................................23

4Care kit after 30,000 brewing cycles or 1 x annually.................................................................................................................................................................... 24

4.1Care kit - Easy Milk / Dynamic Milk........................................................................................................................................................................................................................................24

5Service maintenance 1 every 60,000 brewing cycles ................................................................................................................................................................... 25

5.1Service maintenance 1 - Easy Milk / Dynamic Milk ..........................................................................................................................................................................................................25

6Service Maintenance 2 every 2 years............................................................................................................................................................................................ 26

6.1Service maintenance 2 - Easy Milk / Dynamic Milk ..........................................................................................................................................................................................................26

7Service maintenance Choc/Topping after 6,000 mixer cycles..................................................................................................................................................... 27

7.1Maintenance set Choc/Topping................................................................................................................................................................................................................................................27

8Service maintenance Easy milk pump after 240,000 mixer cycles............................................................................................................................................. 27

8.1Maintenance set Easy milk pump............................................................................................................................................................................................................................................27

9Descaling............................................................................................................................................................................................................................................ 28

Special tools and aids ................................................................................................................................................................................................................................... 29

Installation and commissioning 6

1Installation and commissioning

1.1 Customers on-site connection requirements

Necessary preparatory work for electricity, water and drainage connections at the customer‘s premises are to be arranged by the machine owner/operator.

The work must be carried out by authorised installation technicians in compliance with general, country-specific and local regulations.

The WMF Service engineers may only connect the coffee machine to existing prepared connection points.

WMF Service is neither authorised nor responsible for carrying out any work on-site prior to connection.

For details, see the planning information on the website www.wmf-kaffeemaschinen.de

Installation and commissioning 7

1.2 Hardware connection and preparatory work

1.2.1 General tasks

Place the coffee machine horizontally on the counter (breadth and depth); adjust feet where adjustable

Connect the water infeed

Water filter needed? If yes– connect (for details, see the following chapter)

Connect the drain – use angle 33 2165 8000 from horizontal to vertical!

All drains must be sloped.

Connect to the power supply

Switch on the coffee machine

1.2.2 Recommended water filter

A WMF water filter is recommended for carbonate hardness above 5 °dKH.

For the WMF 5000S, the –bestmax XL– water filter is recommended in the standard price list.

After measuring the carbonate hardness with a test kit - which is within the sell-by date - cut to size according to the capacity table

(see the User manual which comes with the filter).

Installation and commissioning 8

1.3 Initial start-up with the aid of the technical information

1.3.1 Goal of the technician information

A guided implementation of mandatory basic settings.

As simple a start-up of the coffee machine as possible with a high-quality beverage quality.

The aim is not to cover all setting options.

If for example the settings stored as defaults are changed in the "Operating options" menu or if the position of beverage cups is changed, filling quantities are to

be changed, this must take place after the intro has concluded.

1.3.2 Workflow, technician info:

Set and where necessary change the language

Adjust time and date where necessary

Installation and commissioning 9

The prompt appears asking whether to carry out start-up or not

When "Yes”: Next step

If “Yes”: Machine is filled then heat and is then ready for use

Enter the technician PIN

(Since some access to service menus is provided as part of the technician intro; it is used to ensure that only

technicians use the start-up intro.)

A pure info text page follows

In this way, the setting steps to be performed are explained in detail.

Installation and commissioning 10

Adjust the machine configuration if necessary

After processing and confirmation, a restart will be required.

The menu items are intended – as they partly build on top of each another- to be processed from top to bottom

(The cooler is only present when it was previously selected in the machine options)

Menu items which were run through and processed are marked with a check.

The OK button appears once all menu items have been processed.

A concluding info text page appears

Service 11

2Service

2.1 Brewer

The technician can install and remove the brewer with a few basic hand maneuvers.

1. Remove grounds container, drip tray

2. Unscrew the safety screw from the unlocking lever

3. Pull the unlock lever at the brewer and remove the brewer by moving it out towards the front

Service 12

2.2 Distance between angle sensor and brewer spindle (magnet)

The "Brewer in place" status is detected by the angle sensor, which receives a signal from the magnet installed at the upper end of the brewer spindle.

The distance between the angle sensor and the magnet on the brewer spindle must be between 0.8 and 2.8 mm.

This distance is checked during commissioning in the factory. If it is too low, then spacers are installed to compensate for component tolerances.

Most machines have one spacer installed.

0.8 mm - 2.8

Service 13

Checking the distance:

Unscrew the angle sensors.

Leave the installed state as it is (with or without spacers).

Check the distance with the inspection gage 33 2695 5000

If the distance is greater than 2.8 mm then remove spacers

If the distance is less than 0.8 mm then install spacers. One set of spacers, consisting of 2 spacers of 0.5 mm and 1 mm thickness, is available for adjusting the

brewer sensor relative to the brewer magnet. It is item number 33 2908 1000.

Technical service instructions:

If the distance is OK, the angle sensor may be defective. In this case, please replace it.

If the brewer motor is replaced, the replacement brewer motor comes with one set of spacers.

Service 14

2.3 Espresso pump

The WMF 5000S has a balanced espresso pump installed.

Unlike standard espresso pumps, this espresso pump regulates to 7.5 bar over the atmospheric pressure - irrespective of the pump input pressure (= line pressure).

Technical service instructions:

In the event that this espresso pump requires readjusting, this can be done without opening the machine.

The set screw for the espresso pump is accessible in its position above the brewer shaft.

Technical service instructions/customer instructions

The espresso pump is NOT self-priming.

Risk of damage to the espresso pump when running empty.

The coffee machine must therefore have an upstream pressure on the line side of 0.2 bar. This means:

Under no circumstances must the coffee machine be operated with a tank which does not have a supply pump between it and the machine.

Service 15

2.4 Pressure reducer setting

The pressure gage can be used to check and adjust the output pressure of the pressure reducer. The auxiliary nipple is screwed in at the descaling connection and

connected to the pressure gage

Check the pressure reducer setting:

-Start the Service routine “Set pressure reducer”

-Remove the descaler coupling and install the auxiliary nipple with the pressure gage.

-Start the service routine and where applicable, set the pressure reducer to 1.8 bar

-End the service routine, remove the test fitting and reinstall the descaler coupling

Test tool comprising:

Pressure gage 3327300000

Auxiliary nipple 3323208000

O-ring 3303985000

Service 16

2.5 Grinders

Right grinder

The grinder right (33 7006 4704) is pre-set to grinding number 1 espresso grinding.

This corresponds to a discharge rate of about 2.2 g/s, and a grain size distribution of about 470 μm

Left and center grinder

The grinder middle and left (33 7006 4703) is pre-set to grinding number 5 Creme grinding.

This corresponds to a discharge rate of 2.6 g/s and a grain size distribution of approx. 640 μm

2.5.1 Grinder - grinding degree setting

1. The setting is made on the grinder when it is completely empty.

2. Grinder with assembled sprocket without shaft bearings and worm shaft; the grinder is not attached to the motor.

3. The disks are turned towards each other until they sit tight to each other and can no longer be rotated around the driveshaft by hand.

4. The shaft bearing with worm shaft is assembled.

5. On the shaft bearing, turn 10 turns (a 360°), this corresponds to grinding number 1– espresso grinding

On the shaft bearing, turn 18 turns (a 360°), this corresponds to grinding number 5 - creme grinding

6. Re-adjust the grinding degree if necessary

Service 17

2.6 Power stage

All inputs and outputs are located on the power stage.

The power stage is protected from surge currents and short circuit by four current sensors and a current detector.

The outputs for controlling the brewer motor are non-locking.

This means that these outputs are normally protected. The outputs could only sustain damage in the case of a direct open-circuit.

All other outputs are short circuit-resistant. The outputs are not damaged even in the event of open circuit

2.7 Front panel

The following components are integrated in the front panel:

-Controller

-Display

-Sensor Glass / Touch

-Micro-SD Card

-Ethernet connection

-USB connection

The micro-SD card stores all data.

-With a software update, the new machine software and operating system software are stored on the Micro-SD card

-A complete data back-up takes place daily, after the cleaning program. Device settings, counter states, maintenance data secured.

When replacing the front panel, the micro-SD card can be used as a backup

Service 18

2.8 Power supply

The same power supply is used on the WMF 5000S as for the WMF 1500S.

The power supply converts an unstabilized input voltage into a stabilized DC voltage.

The power supply can be provided with a 115 V (with a jumper on J5) and a 230 V input voltage and delivers 5 V, 24, and 30 V output voltages

Once the machine is switched on using an On switch, the outgoing invoices are made available by the power supply.

In the event of an error, e.g. a surge current or short circuit, the power supply switches off.

->If the power supply detects more than one error, this can only be reset by disconnecting the machine from the mains for 5 minutes.

J5- Connect the jumper with an input voltage of 115V

Service 19

2.9 Ventilation system

The WMF 5000S requires 2 different fans

Fan, power stage:

A powerful (1.68 W) fan ensures a low ambient temperature of the power stage.

This fan pumps the air into the inside of the machine from the rear cover to the power stage. From here, the air is sent

out again via the discharge.

At the same time, this prevents steam from reaching the power stage via the discharge

Instructions:

The service life of the power stage is reduced by high ambient temperatures. For example, when using a low-power or

a fault fan.

Machine suction

The "quiet fan" (0.74 W) diverts residual moisture from the brewing chamber (coffee grounds) or chocolate area via the

rear cover

Service 20

2.10 Power class

On previous machines there was the "Heater output" setting parameter in the machine data

For the 5000 S this Parameter has been replaced with "Power Class".

The "Power Class" considers both the country-specific heat output versions of the machine, and the current breaker on the mains supply side.

It therefore serves to optimally utilize the machine functionality and to provide appropriate overload protection.

The Power Class determines the following:

Mutual lockout and enabling of components such as the grinder and heater

Lockout and enabling of parallel product dispensing(ensures optimal utilization of steam pressure and thus of dispensing temperatures).

Heating and reheating thresholds based on heat output

Please note:

The Power Class determines the country-specific breakers specific to heat output.

Therefore, the software-adjustable Power Class MUST always match the rating plate indication.

If this is not adhered to, then errors specific to the heating time, for example, or undesired deviations (milk foam / temperatures) in the beverages can occur.