WMF Series 8400 bistro User manual

User Manual
04.04.001
Model Series 8400 33 2413 0900 01.2010
Espresso machine North America English
coffee wakes up the world

2User manual WMF bistro!
Introduction and General Information
Safety Warnings
The lightning flash with arrowhead symbol, within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of fire or electric shock to
persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the appliance.
Do not use the machine if it is not working properly or if it is damaged.
Never alter built-in safety devices.
Ensure that there is always a receptacle under the outlet when dispensing
hot beverages and hot steam to avoid scalding.
Do not touch hot machine components.
Never reach into the coffee grinders.
Never reach into the chocolate hopper.
Switch off the machine before cleaning the front panel to avoid a hot
beverage being accidentally dispensed.
The milk system must be thoroughly cleaned at least once a day to ensure
proper hygiene.
Milk hose should be changed at regular intervals.•
Never reach under the spouts while cleaning the machine.•
Ensure that mixer hose is replaced securely because hot liquid may•
escape.
Never reach under the spouts while cleaning.
Do not reach into the bean hopper or the brewing unit opening when
the espresso machine is switched on to avoid bruising or crushing when
handling moving parts.
Avoid risk of electrocution: when replacing the fuse, disconnect main
power and only use fuse F4A.
Do not remove cover.
No user-serviceable parts inside.
Repair should be done by authorized service personnel only.

3
User manual WMF bistro!
Introduction and General Information
Safety Warning Signs
For a detailed description of the warnings, see the “Safety”
chapter 9.1.
NOTICE CAUTION
Hazard to the machine.
Read and understand user
manual before using this
machine.
Hazard to the user.
See chapter 9.1: Safety.
CAUTION CAUTION
Burn hazard.
Hot surface.
See chapter 9.1: Safety.
Burn hazard.
Hot steam. Hot liquids.
See chapter 9.1: Safety.
CAUTION CAUTION
Hot steam.
See chapter 9.1: Safety.
Bruising or crushing
hazard.
See chapter 9.1: Safety.
WARNING
Failure to follow safety
warnings can lead to
serious injury.
See chapter 9.1: Safety.
Warning
Risk of fire or electric shock.
Do not open.
WARNING, to reduce the risk of fire or electric shock,
do not remove cover (or back),
no user-serviceable parts inside,
repair should be done by authorized service personnel only.
(33 1453 5000)

4User manual WMF bistro!
Introduction and General Information
Congratulations on the purchase of your
WMF espresso machine
The WMF bistro! espresso machine is a fully automatic
single cup machine for espresso, café crème, cappuccino,
milk coffee, latte macchiato, foamed milk and hot water.
With its optionally available Choc hopper, the bistro! can
also make hot chocolate with milk or milk foam.
Each beverage is freshly brewed at the press of a button
which guarantees a high quality beverage.
Operator control of the machine is possible via a graphic
touch-pad display. Up to eight beverage buttons are
available on the operating panel. The beverage buttons
can be allocated on two levels and have a lettering space.
Additional function keys may be allocated, depending on
the machine configuration.
Keep these instructions near the espresso machine so that
you and your operating staff have the right information
handy and can take the correct action in the event of any
technical problems that may arise.
CAUTION
Read and
understand user
manual before
using this machine.
Ensure staff have access to
the user manual.
Important.
See page 2 and 3:
Safety warnings.
See chapter 9.1: Safety.
NOTICE
Observe the manual.
Observe the chapter 9.5:
Warranty
In the event of failure to comply
with maintenance information
(wchapter 7: Maintenance),
no liability is accepted for any
resultant damage.
Similarly all guarantee/warranty
obligations cease to apply in
such cases.

5
User manual WMF bistro!
Table of Contents
Safety Warnings ...................................................2
Safety Warning Signs ...............................................3
Chapter 1 Introduction 8
1.1 Parts of the espresso machine 8
Signs and symbols used in the user manual ............................10
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 2 Operation 12
2.1 Switch on espresso machine 12
2.2 Dispense beverages 12
2.3 Multiple preselection 12
2.4 Shift button (optional) 13
Special button (optional) ........................................... 13
2.5 Dispense hot water 13
2.6 Dispense milk or milk foam 13
2.7 Connect up the milk 14
2.7.1 Standard ..........................................................14
2.7.2 WMF Cooler, WMF Cup&Cool (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.8 Dispense Steam (optional) 15
Warm beverages ..................................................15
Foam milk .......................................................15
2.7 Steam Milk (optional)/Dual Milk (optional) 16
2.10 Height adjustment of the combi spout 17
2.11 Bean hopper/product hopper 17
2.12 Manual insert 17
2.13 Coffee grounds container 18
2.14 Grounds disposal through the counter (optional) 18
2.15 Drip tray 19
2.16 Switch off the espresso machine 19
Chapter 3 Software 20
3.1 An overview 20
3.2 Ready to operate display 22
3.2.1 Ready to operate display..............................................22
Standard display for normal operation ................................22
Standard display for SB mode (self-service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.2 Warm rinse pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.3 Barista pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.2.4 Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service .........................................................23
Customer care ...................................................23
Brew time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Journal .........................................................23
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.5 To main menu ......................................................24

6User manual WMF bistro!
Table of Contents
3.3 Main menu 24
3.3.1 Milk and foam .....................................................24
Milk foam quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Latte macchiato pause interval ......................................25
3.3.2 Timer program .....................................................25
Timer state ......................................................25
Set timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Copy day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Timer overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Delete timer .....................................................28
Timer information ................................................28
3.3.3 Customer care .....................................................29
Cleaning program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Milk system .....................................................29
Choc system (mixer rinsing) (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Filter change (optional) ............................................30
Customer check-up (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Recipe and beverage buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Selecting the beverage button when setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Adjust values
Start a brewing test with the current values
Save setting
Cup volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Change recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Set decaf (optional)
Sequence of ingredients additions ...................................34
Button allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Testing .........................................................35
Weigh grounds
Quality check
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Time/date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Language .......................................................35
Display contrast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Scale filter ......................................................35
Capacity ........................................................36
Warm-up rinsing .................................................36
SB operation (self-service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Foamer rinsing ...................................................36
Rinsing interval ..................................................36
Operating options ................................................37
Illumination (optional) .............................................37
3.3.5 Enter PIN .........................................................38
3.3.6 PIN rights access control ............................................38
Cleaning level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Setting level ....................................................38
Accounting level ..................................................39
Delete PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3.7 Accounting numbers of beverages .....................................40
3.3.8 Waiter accounting system (optional) ...................................40

7
User manual WMF bistro!
Table of Contents
Chapter 4 Other settings 41
4.1 Set pinch valve 41
4.2 Labelling of beverage buttons 41
Chapter 5 Care 42
5.1 Cleaning program 44
5.2 Milk system cleaning 44
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Plug&Clean ......................................................45
5.3 Choc system rinsing 45
5.4 General cleaning 45
5.5 Choc mixer cleaning (optional) 46
5.6 Steam Milk outlet cleaning (Standard and Steam Milk) 47
5.7 Foils for bean hopper cleaning 47
5.8 Cleaning the Choc product hopper (optional) 48
Chapter 6 HACCP schedule 49
Chapter 7 Maintenance 51
7.1 Customer Check-up 51
7.2 Maintenance 51
7.3 Mixer 51
7.4 WMF Service 51
Chapter 8 Messages and instructions 52
8.1 Messages for operation 52
8.2 Error messages/malfunctions 53
8.3 Error without error display 56
Chapter 9 Safety 57
9.1 Hazards to the operator 57
9.2 Hazards to the espresso machine 58
9.3 Directives 59
9.4 Duties of the owner/operator 59
9.5 Warranty claims 60
No warranty is provided: ..........................................61
Appendix A: Cleaning instruction 62
Appendix B: Technical data 63
Technical data for espresso machine 63
Conditions for usage and installation 64
Appendix C: Accessories and spare parts 66
Index 70

8User manual WMF bistro!
Display for self-service operation
1
2
7
5
11
4
11
13
14
5
10
15
17
3
6
9
12
2
20
22
21
23
4
18
19
8
7
8
16
Introduction and General Information
Chapter 1 Introduction
1.1 Parts of the espresso machine

9
User manual WMF bistro!
Introduction and General Information
1Bean hopper(s) (optional 1 or 2, espresso on the left)
2Choc container (optional)
3Manual insert/Tablet insert
4Touch-screen display
5Beverage buttons *
6Steam button* or special preselection buttons (optional)
7Pinch valve (when dispensing milk and milk foam through the combi spout)
8Plug&Clean (optional)
9Steam dispensing (optional), Steam Milk outlet (optional)
10 Height-adjustable combi spout with integral milk foamer
11 ON/OFF button
12 Decaf button **
13 Shift button **
14 Hot water button *
15 Hot water spout
16 Coffee grounds container
17 Removable drip tray with drip plate (drip grid)
18 Warm rinse pad
19 Barista pad
20 Timer and clock display
21 Info pad
22 Messages/error messages
23 Menu pad (opens main menu)
* Standard allocation
** Alternative button allocation

10 User manual WMF bistro!
Introduction and General Information
Signs and symbols used in the user manual
For a detailed description of the warnings, see
the “Safety” chapter.
Tip
Instruction Cross reference
Start position
Main menu
Very important.
Must be strictly
observed.
If the menu symbol is shown in this user manual the
description starts at the start position.
Call up the main menu
Touch thepad
The main menu is displayed.
There are other display options wMain menu.
Main menu