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CVA4070 / CVA4075 Coffee Systems

Technical Information

TECHNICAL INFORMATION

CVA4070 / CVA4075 Coffee System

@ 2006 Miele USA

1

Technical Information

CVA4070 / CVA4075 Coffee Systems

CVA4070 / CVA4075 - Table of Contents

A Warning and Safety Instructions ...........................................................8

1.0 Construction and Design.......................................................................10

1.1 Appliance Overview ............................................................................................. 10

1.1.1

Front View .............................................................................................. 10

1.1.2 Interior (Front of Appliance Opened)...................................................... 11

1.2 Technical Data..................................................................................................... 12

1.2.1

Electrical Information .............................................................................. 15

1.2.2

Plumbing Information.............................................................................. 15

1.3 Layout of Components......................................................................................... 16

2.0 Installation ..............................................................................................17

2.1 Product Dimensions............................................................................................. 17

2.2 Installation Procedure .......................................................................................... 18

3.0 Commission and Operation ..................................................................20

3.1 General Operation ............................................................................................... 20

3.1.1

Touch controls ........................................................................................ 20

3.1.2

Display.................................................................................................... 20

3.1.3

Before the first use ................................................................................. 20

3.1.4 Turning on .............................................................................................. 21

3.1.5

Turning Off.............................................................................................. 21

3.3.1

Setting the time of day............................................................................ 23

3.3.2

Clock display size ................................................................................... 23

3.3.3

12 or 24 hour clock ................................................................................. 23

3.3.4

Clock display on/off ................................................................................ 24

3.4 Filling the water tank............................................................................................ 24

3.5 Filling the beans container................................................................................... 25

3.6 Filling ground coffee ............................................................................................ 26

3.7 Adjusting the dispenser height............................................................................. 26

3.8 Adjust the grinder setting ..................................................................................... 27

3.9 Steam system ...................................................................................................... 28

3.10 Froth dispenser/Intake hose ................................................................................ 28

3.11 Cleaning in the dishwasher ................................................................................. 28

4.0 Function ..................................................................................................29

4.1 Optical interface................................................................................................... 29

4.2 Control electronic EPX......................................................................................... 29

4.3 Brew unit controls ................................................................................................ 30

4.3.1 Position of the microswitches ................................................................. 30

4.3.2 Brew unit present control........................................................................ 31

4.3.3 Electronic grinding amount compensation.............................................. 31

4.3.4 Brew unit drive, home position ............................................................... 33

4.3.5 Brew unit drive, compressing position (brew position) ........................... 35

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CVA4070 / CVA4075 Coffee Systems

Technical Information

CVA4070 / CVA 4075 - Table of Contents (continued)

4.3.6 Brew unit drive, drain position ................................................................ 36

4.4 Water paths ......................................................................................................... 37

4.4.1 General view........................................................................................... 37

4.4.2 Water path – Making coffee.................................................................... 38

4.4.3 Water path – Hot water........................................................................... 39

4.4.4 Water path – Steam................................................................................ 40

4.5 Appliance status after a power disruption................................................ 40

5.0 Service .............................................................................................................. 41

5.1 Appliance – Remove from cabinet ...................................................................... 41

5.2 Door lamps – Remove ........................................................................................ 42

5.3

Door – Remove ................................................................................................... 44

5.4 Hot water dispenser – Remove........................................................................... 46

5.5 Cappuccinatore – Remove.................................................................................. 48

5.6 Brew unit drive – Remove ................................................................................... 50

5.7 Microswitch grinding amount compensation – Remove ...................................... 54

5.8 Grinder – Remove............................................................................................... 56

5.9 Hot water solenoid – Remove ............................................................................. 61

5.10 Steam solenoid – Remove .................................................................................. 64

5.11 Flow-thru heater coffee/hot water – Remove ...................................................... 67

5.12 Flow-thru heater steam – Remove...................................................................... 70

5.13 Coffee/hot water pump – Remove ...................................................................... 73

5.14 Steam pump – Remove ...................................................................................... 77

5.15 Flow meter – Remove ......................................................................................... 81

5.15 Power electronic EPL – Remove ........................................................................ 85

6.0 Fault Diagnosis ......................................................................................89

6.1 Programming mode ............................................................................................. 89

6.1.1

Reset ...................................................................................................... 97

6.1.2 Language – Set ...................................................................................... 98

6.1.3

Time – Set .............................................................................................. 99

6.1.4 Timer – Set / activate............................................................................ 100

4.1.5 Grinding amount – Set.......................................................................... 101

6.1.6

Pre-brewing – Set................................................................................. 102

6.1.7 Temperatures for coffee and hot water – Set ....................................... 103

6.1.8 Automatic rinse – On / off ..................................................................... 105

6.1.9 Steam system – On / off ....................................................................... 106

6.1.10 Door and interior lighting – Set ............................................................. 107

6.1.11 Coffee count – Indicate......................................................................... 108

6.1.12 System lock – Set................................................................................. 109

6.1.13

Water hardness – Set........................................................................... 110

6.1.14 User profile – Set.................................................................................. 111

6.1.15 Display – Set ........................................................................................ 113

6.1.16 Signal tones – Set ................................................................................ 114

6.1.17 Factory setting – Restore ..................................................................... 115

6.1.18 Restart .................................................................................................. 116

3

Technical Information

CVA4070 / CVA4075 Coffee Systems

CVA4070 / CVA 4075 - Table of Contents (continued)

6.1.19 Appliance variant – Set......................................................................... 117

6.1.20 Descale lock – Reset............................................................................ 118

6.1.21 Cleaning lock – Reset........................................................................... 119

6.2 Service mode overview...................................................................................... 120

6.3 Fault Codes – Read, save and delete ............................................................... 125

6.3.1

Fault Code Accessing........................................................................... 125

6.3.2

Fault Code Summary............................................................................ 126

6.3.3

F1 ......................................................................................................... 127

6.3.4 F2 ......................................................................................................... 127

6.3.5 F3 ......................................................................................................... 127

6.3.6 F4 ......................................................................................................... 127

6.3.7 F10 ....................................................................................................... 127

6.3.8 F17 – Insufficient water supply ............................................................. 128

6.3.9 F41 ....................................................................................................... 129

6.3.10 F42 ....................................................................................................... 129

6.3.11 F47 ....................................................................................................... 129

6.3.12 F73 – Faulty Brew unit.......................................................................... 129

6.3.13 F80 Cause ............................................................................................ 130

6.3.14 F81 ....................................................................................................... 130

6.3.15 F82 ....................................................................................................... 131

6.3.16 F83 ....................................................................................................... 131

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CVA4070 / CVA4075 Coffee Systems

Technical Information

CVA4070 / CVA4075 - List of Figures

Figure 1-1: CVA4070 Front Overview ........................................................................... 10

Figure 1-2: CVA4070 Inside Overview.......................................................................... 11

Figure 1-3: CVA4070 Layout Components ................................................................... 16

Figure 2-1: CVA4070 Plumbing .................................................................................... 17

Figure 2-2: CVA4070 Adjusting Feet ............................................................................ 18

Figure 2-3: CVA4070 Mounting Locations .................................................................... 19

Figure 2-4: CVA4070 Adjusting Door Hinges................................................................ 19

Figure 3-1: CVA4070 Pull Door Open........................................................................... 24

Figure 3-2: CVA4070 Pull Water Tank Out. .................................................................. 25

Figure 3-3: CVA4070 Beans Container......................................................................... 25

Figure 3-7: CVA4070 Dispenser Height........................................................................ 27

Figure 3-8: CVA4070 Grinder Adjustment .................................................................... 27

Figure 3-9: CVA4070 Frother Spout Removal .............................................................. 28

Figure 4-1: CVA4070 Control Panal.............................................................................. 29

Figure 4-2: CVA4070 Brew Unit.................................................................................... 30

Figure 4-3: CVA4070 Brew Unit Switch ........................................................................ 31

Figure 4-4: CVA4070 Brew Unit Volume....................................................................... 32

Figure 4-5: CVA4070 Ground Coffee Volume............................................................... 33

Figure 4-6: CVA4070 Rear View................................................................................... 33

Figure 4-7: CVA4070 Front View. ................................................................................. 34

Figure 4-8: CVA4070 Rear View................................................................................... 35

Figure 4-9: CVA4070 Front View .................................................................................. 35

Figure 4-10: CVA4070 Rear View................................................................................... 36

Figure 4-11: CVA4070 Front View .................................................................................. 36

Figure 4-12: CVA4070 General Water Path View........................................................... 37

Figure 4-13: CVA4070 Coffee Water Path View ............................................................. 38

Figure 4-14: CVA4070 Hot Water Path View .................................................................. 39

Figure 4-15: CVA4070 Steam Water Path View ............................................................. 40

Figure 5-1: CVA4070 Service View............................................................................... 41

Figure 5-2: CVA4070 Door Lamp Screw Removal ....................................................... 42

Figure 5-3: CVA4070 Door Lamp Removal .................................................................. 43

Figure 5-4: CVA4070 Door Screw Removal ................................................................. 44

Figure 5-5: CVA4070 Door Retaining Screw Removal ................................................. 45

Figure 5-6: CVA4070 Hot Water Removal .................................................................... 46

Figure 5-7: CVA4070 Hot Water Retaining Screw Removal......................................... 47

Figure 5-8: CVA4070 Cappuccinatore Screw Removal ................................................ 48

Figure 5-9: CVA4070 Cappuccinatore Retaining Screw Removal................................ 49

Figure 5-10: CVA4070 Brew Drive Screw Removal........................................................ 50

Figure 5-11: CVA4070 Brew Unit Drive Removal ........................................................... 51

Figure 5-12: CVA4070 Brew Unit Removal..................................................................... 52

Figure 5-13: CVA4070 Brew Unit Retaining Screw Removal ......................................... 53

5

Technical Information

CVA4070 / CVA4075 Coffee Systems

CVA4070 / CVA4075 - List of Figures (contined)

Figure 5-14: CVA4070 Service Door Retaining Screw Removal .................................... 54

Figure 5-15: CVA4070 Microswitch Removal ................................................................. 55

Figure 5-16: CVA4070 Grinder Screw Removal ............................................................. 56

Figure 5-17: CVA4070 Grinder Unit Removal................................................................. 57

Figure 5-18: CVA4070 Bean Container Screw Removal ................................................ 58

Figure 5-19: CVA4070 Bean Container Removal ........................................................... 59

Figure 5-20: CVA4070 Grinder Retaining Screws Removal ........................................... 60

Figure 5-20: CVA4070 Grinder Retaining Screws Removal ........................................... 61

Figure 5-21: CVA4070 Solenoid Removal ...................................................................... 62

Figure 5-22: CVA4070 Solenoid Removal ...................................................................... 63

Figure 5-23: CVA4070 Solenoid Screw Removal ........................................................... 64

Figure 5-24: CVA4070 Solenoid Removal ...................................................................... 65

Figure 5-25: CVA4070 Solenoid Removal ...................................................................... 66

Figure 5-26: CVA4070 Rear Screw Removal ................................................................. 67

Figure 5-27: CVA4070 Flow-thru Heater......................................................................... 68

Figure 5-28: CVA4070 Flow-thru Heater Screw Removal .............................................. 68

Figure 5-29: CVA4070 Flow-thru Heater Temperature ................................................... 69

Figure 5-30: CVA4070 Rear Service Door Retaining Screw Removal ........................... 70

Figure 5-31: CVA4070 Flow-thru Heater Steam ............................................................. 71

Figure 5-32: CVA4070 Flow-thru Heater Steam ............................................................. 71

Figure 5-33: CVA4070 Temperature............................................................................... 72

Figure 5-34: CVA4070 Rear Service Door Screw Removal............................................ 73

Figure 5-35: CVA4070 With Service Door Open............................................................. 74

Figure 5-36: CVA4070 Coffee/Hot Water Pump ............................................................. 75

Figure 5-37: CVA4070 Coffee/Hot Water Pump Removal .............................................. 76

Figure 5-38: CVA4070 Service Door Steam Pump Removal.......................................... 77

Figure 5-39: CVA4070 Steam Pump Removal ............................................................... 78

Figure 5-40: CVA4070 Coffee/Hot Water Pump Removal .............................................. 79

Figure 5-41: CVA4070 Pump Retaining Screws Removal.............................................. 80

Figure 5-42: CVA4070 Flow Meter Screws Removal...................................................... 81

Figure 5-43: CVA4070 Flow Meter Removal .................................................................. 82

Figure 5-44: CVA4070 Flow Meter Removal .................................................................. 83

Figure 5-45: CVA4070 Flow Meter Safety Ring Removal............................................... 84

Figure 5-46: CVA4070 Power Electronic Retaining Screws Removal ............................ 85

Figure 5-47: CVA4070 Connecting Plugs and Pin Allocations........................................ 86

Figure 6-1: CVA4070 Faulty Brew Unit ....................................................................... 129

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CVA4070 / CVA4075 Coffee Systems

Technical Information

CVA4070 / CVA 4080 - List of Tables

Table 1-1: Technical Data (Continued on Table 1-2) .................................................... 12

Table 1-2: Technical Data (Cont. from Table 1-1, Cont. on Table 1-3)......................... 13

Table 1-3: Technical Data (Continued from Table 1-2)................................................. 14

Table 1-4: CVA4070 Electrical ...................................................................................... 15

Table 4-1: CVA4070 Ground Coffee Setting................................................................. 32

Table 5-1: CVA4070 Connecting Plugs and Pin Allocations (Cont. on Table 5-2)........ 86

Table 5-2: CVA4070 Connecting Plugs and Pin Allocations (Cont. from Table 5-1)

(Cont. on Table 5-3) ................................................................................... 87

Table 5-3: CVA4070 Connecting Plugs and Pin Allocations (Cont. from Table 5-2) .... 88

Table 6-1: CVA4070 Program Mode (Cont. on Table 6-2)............................................ 90

Table 6-2: CVA4070 Program Mode (Cont. from Table 6-1; Cont. on Table 6-3)......... 91

Table 6-3: CVA4070 Program Mode (Cont. from Table 6-2; Cont. on Table 6-4)......... 92

Table 6-4: CVA4070 Program Mode (Cont. from Table 6-3; Cont. on Table 6-5)......... 93

Table 6-5: CVA4070 Program Mode (Cont. from Table 6-4; Cont. on Table 6-6)......... 94

Table 6-6: CVA4070 Program Mode (Cont. from Table 6-5; Cont. on Table 6-7)......... 95

Table 6-7: CVA4070 Program Mode (Cont. from Table 6-6) ........................................ 96

Table 6-7: CVA4070 Water Hardness Settings........................................................... 110

Table 6-8: CVA4070 Service Mode (Continued on Table 6-9).................................... 120

Table 6-9: CVA4070 Service Mode (Cont. from Table 6-8; Cont. on Table 6-10) ...... 121

Table 6-10: CVA4070 Service Mode (Cont. from Table 6-9; Cont. on Table 6-11) ...... 122

Table 6-11: CVA4070 Service Mode (Cont. from Table 6-10; Cont. on Table 6-12) .... 123

Table 6-12: CVA4070 Service Mode (Continued from Table 6-11) .............................. 124

Table 6-13: CVA4070 Fault Code Summary................................................................. 126

7

Technical Information

CVA4070 / CVA4075 Coffee Systems

A Warning and Safety Instructions

General

All repairs should be performed by a trained technician in strict accordance with national, state and local codes. Any repairs or maintenance performed by unqualified personnel could be dangerous.

When servicing, modifying, testing or maintaining appliances, all applicable laws, regulations and accident prevention guidelines must be observed.

Before any service work is started, the machine must be safely disconnected from its power source.

Even with the machine switched off, voltage may exist on some components.

After work has been completed, as a matter of standard practice, a visual as well as an operational check should be performed.

A touch current measurement has to be performed on all components that are not connected to ground.

Note

Prior to starting service or repair work, remove all containers and the drip tray with the spill guard grid from the appliance.

Risk of burning or scalding

Components maybe hot.

Pressurized steam maybe present.

To protect from burns

1. switch the appliance off about1hour before starting service or repair work, so the flow-thru heaters can cool down, or

2. in the service mode, pump water through the flow-thru heaters for about1 minute, so they can cool down.

8

CVA4070 / CVA4075 Coffee Systems

Touch current measurement

Technical Information

Note

Touch current measurement should be carried out on all accessible conductive parts that are not connected to ground.

Warning!

Touch current measurement may only be performed after the ground connection of the unit being tested has been checked and found to be satisfactory!

A defective appliance, as well as accessible conductive parts that are not connected to ground, may carry dangerous voltages!

9

Technical Information

CVA4070 / CVA4075 Coffee Systems

1.0 Construction and Design

1.1 Appliance

1.1.1

Figure 1-1: CVA4070 - Front Overview

10

CVA4070 / CVA4075 Coffee Systems

1.1.2 Interior (Front of Appliance Opened)

Figure 1-2: CVA4070 - Inside Overview

Technical Information

11

Technical Information

CVA4070 / CVA4075 Coffee Systems

1.2 Technical

▪ The CVA4070 is designed to be built into cabinets and must be fully installed before any operation.

▪ This appliance can be installed above another appliance but, there must be a solid, closed shelf between the base of the coffee machine and the top of the appliance below

▪ Exercise caution while operating the appliance; coffee, hot water and steam can cause burns.

Model CVA4075

Weight *1

Ease of operating

Intelligent dialog control with large standard text display

Languages available

Sensor pad controls

Electronic control with step-by-step user guide kg 27.5

X

17

X

X

Function

Portion sizes

Brew two cups at the same time

Select amount of coffee per cup g

2(espresso and coffee)

X

7– 14

Program the necessary amount of water per cup

X

Select Cappuccino via touchpad and user guide

X

Prepare milk froth separately X

Heat water

Brew a different type of coffee using ground coffee

Program individual coffee user profiles

Set the start and end times

Automatic rinsing and cleaning program

Set water hardness

Table 1-1: Technical Data (Continued on Table 1-2)

X

X max. 10

X

X

X

12

CVA4070 / CVA4075 Coffee Systems

Technical Information

Model

Equipment

Water tank

Removable coffee bean container

Capacity

Waste container

Drip tray with spill guard grid for secure transport

Height adjustable coffee spouts, adjustable to cup height

Hot water jet

Flowstable magnetic piston pump

Aluminum flow-thru heater

Brew unit – removable and easy to clean

Additional socket to connect the coffee maker and the dish warming drawer

Liters 2.5 g 500

Portions cm approx. 25

1 1.8

5.5 – 9.5

X

2

2

X

X

Indicators

Prompts for coffee bean and fresh water refill

Prompts to empty the waste container and the drip tray

Indicator for the descale program

X

X

X

CVA4075

Electrical connection

Voltage VAC

Frequency Hz

Connected load kW

Fuses A

Breaker cable length ft

115– 120

60

1.2

12

9

Safety

Set system lock X

Table 1-2: Technical Data (Cont. from Table 1-1, Cont. on Table 1-3)

13

Technical Information

Model

Accessories supplied

Kettle-type socket

Milk container and attachment for preparing cappucino

Descaling and cleaning agents

Spoon for ground coffee

CVA4070 / CVA4075 Coffee Systems

CVA4070,CVA4075

X

X

X

X

X

Optional accessories available

Combination strip HKL 60:

Combination strip for use in any combination of oven (60 cm), compact oven, or steam oven and coffee maker.

Mobile built-in cabinets MES 45 and

MES 60

X

X

Miscellaneous

Consumption in standby mode W <1

Table 1-3: Technical Data (Continued from Table 1-2)

*1 Make sure that the cabinet or the wall are stable enough to support the appliance.

14

1.2.2

CVA4070 / CVA4075 Coffee Systems

1.2.1

Model Number

Electrical

Requirements

CVA4070

Table 1-4: CVA4070 Electrical

120 VAC 15amp

Information

None – not applicable

Technical Information

Plug Style

NEMA 5-15

15

Technical Information

1.3 Layout of Components

CVA4070 / CVA4075 Coffee Systems

1 Reed contact– ground coffee funnel

2 Power electronic EPL

3 Light barrier – coffee bean container

4 Grinder

5 Reed contact– door

6 Light barrier – coffee bean container

7 Interior lamp

17 Flow meter

18 Steam pump with temperature limiter

19 Coffee/hot water pump with temperature limiter

20 Solenoid – steam

21 Interior lamp

22 Temperature sensor– flow-thru heater coffee/hot water

23 Flow-thru heater coffee/hot water

8 Control electronic EPX

9 Main power switch

12 Door lamp

13 Brew unit drive

10 Microswitch grinding amount compensation

11 Door lamp

14 Contact spring drip tray(3 springs)

15 Solenoid – hot water

24 Temperature limiter– flow-thru heater coffee/hot water

25 Flow-thru heater steam

26 Temperature sensor– flow-thru heater steam

27 Temperature limiter– flow-thru heater steam

28 Temperature fuse (one for each flow-thru heater)

29 Interference suppressor

30 Not Used

31 Socket for main power

16 Reed contact– waste container

Figure 1-3: CVA4070 Layout Components

16

CVA4070 / CVA4075 Coffee Systems

2.0 Installation

2.1 Product

Figure 2-1: CVA4070 - Plumbing

Technical Information

17

Technical Information

CVA4070 / CVA4075 Coffee Systems

2.2 Installation

Note:

Make sure power is not supplied to the appliance while installation or maintenance work is preformed. Disconnect the power supply to the work area by unplugging the unit, tripping the circuit breaker. The coffee system must be installed into cabinetry before being used.

Figure 2-2: CVA4070 - Adjusting Feet

1. Unscrew the height adjustable feet (fig. 2-1) on the underside of the machine about 1/16" (2 mm).

2. Push the appliance all the way back into the cabinet and center it.

Note:

If necessary level the unit with the four height adjustable feet.

Note:

The feet can be turned out up 3/8" (10mm).

18

CVA4070 / CVA4075 Coffee Systems

Technical Information

If your cabinet has 3/4" (19 mm) side walls, drill four holes for the mounting.

3. Center the unit and Make centers of mounting holes.

4. Take the unit of the niche and drill four holes at the screws markings

(1/16" [2 mm], diameter 3/16" [4.5 mm]).

5. Plug the appliance into the electrical outlet.

6. Open the door and partially tighten the screws.

1 Carefully turn the lower screws to center the machine

2 To secure the appliance in the cabinet, tighten the upper screws by hand.

Do Not Use an electric screwdriver.

Figure 2-3: CVA4070 - Mounting Locations

2.2.2 Adjusting the Door Hinges

The door hinges can be adjusted if the door cannot be opened easily .

1 To adjust the door sideways turn screw

2 To adjust the door to the front or back turn screw

Figure 2-4: CVA4070 Adjusting Door Hinges

19

Technical Information

CVA4070 / CVA4075 Coffee Systems

3.0 Commission and Operation

3.1 General

3.1.1

Select a touch control with your fingertip to use the machine

3.1.2 Display

To select a menu, select the touch control next to the respective menu point.

If more features can be selected under one menu point, the menu has three dots (e.g, "settings...")

"more" / "back": if there are more menus which are not immediately shown, select "more" or "back" to see further

"Clear":

"Stop":

"OK":

options. to go back to the previous screen to cancel coffee preparation to save the settings.

3.1.3 Before the First Use

Note:

The appliance must be correctly installed and connected before the first use.

Note:

Clean the appliance and remove protective foils before the first use

20

CVA4070 / CVA4075 Coffee Systems

3.1.4

Technical Information

Turning On

1. Select "On/Off" to turn the coffee system on.

• The display shows the clock. See "Settings - Clock - Setting the time of day" to set the time.

• During the very first use, you will be prompted to select a language.

2. Select the desired language touch control and then "OK".

• The symbol indicates the "Language" setting. If you accidentally select an unfamiliar language, simply look for the symbol. Touch the control next to the flag symbol and select your language of choice.

3. Customize the coffee system to your desired settings.

Note:

Prepare two cups of coffee and dispose of them , this will clean any coffee residues from the brew unit left from the quality control tests at the factory.

3.1.5

1. Select "On/Off".

• The display shows the time of day. After 60 seconds the display turns off (depending on the setting). See: Settings - Clock".

Note:

If the rinse automatic feature is turned on the same machine will begin rinsing if a coffee was prepared that day.

21

Technical Information

CVA4070 / CVA4075 Coffee Systems

3.2 Language

To show the displays in the desired language, select the language before the first use.

1. Select "Settings" from the main menu during the pre-heating phase or

2. in the main menu.

3. Select "Language"

4. Select the desired language. To see more language options, select

"more". Language options: English, German, Espanol, Francais,

Italiano, Polski and Portugues.

5. Select "OK" to save the selection. All displays are shown in the

selected language.

6. To go back to the main menu, select "Clear".

22

CVA4070 / CVA4075 Coffee Systems

1. Select "Settings".

2. Select "Clock".

3.3.1

Technical Information

Setting the Time of Day

1. Select "Enter Time".

2. Select "+" or "-" with the right touch controls to select the hours.

3. Set the minutes by selecting "Minutes".

4. Select "+" or "-" with the right touch controls to select the minutes.

5. Select "OK".

3.3.2

3.3.3

Clock Display Size

The size of the clock display can be adjusted. The options are "normal" or

"large".

1. Select the "Size" touch control.

• The selected size is highlighted in the display.

2. Select the "Size" touch control until the desired size is highlighted.

3. Select "ok" to save the selection.

12 or 24 Hour Clock

The clock display can be set to the 12 or 24 hour clock.

1. Select the respective touch control. The selected display is

highlighted.

2. Select "OK" to save the selection.

23

Technical Information

3.3.4

CVA4070 / CVA4075 Coffee Systems

Clock Display On/Off

The clock can be displayed or turned off.

• If the display is turned on, the time of day is displayed when the machine is turned off.

• If the option is set off, the display turns off after 60 seconds.

1. Select "Clock display". The selected display is highlighted.

2. Select "OK" to save the selection.

3.4 Filling the Water Tank

The beans and the water quality is important for a good espresso or coffee. The water tank must be washed and filled with fresh cold drinking water before each day of use. The unit displays a reminder when turned on.

Note:

Never add hot water or any other liquids except cold water to the water tank.

Note:

Do not use mineral water. Mineral water leads to heavy calcium built-up in the machine that can damage the unit.

1. Open the appliance door by holding the grip next to the hot water spout and pulling the door towards you.

24

3

CVA4070 / CVA4075 Coffee Systems

.5

Technical Information

2 . Pull the water tank out.

3. Fill the container with fres h, cold tap water to the "Max." mark.

4. Close the lid and push the water tank into the unit until it clicks in to place.

Note:

The wa ter tank must be positioned correctly or the valve will leak. If the water tank has not clicked into place, pull the tank out, check and clean the niche.

Filling the Beans Container

Note:

Only fil l espresso or coffee beans in the beans container. Anything else including ground coffee - will damage the grinding unit. Caramelized or otherwise pre-treated beans or sugar containing beverages must not be filled into the appliance. It will damage the coffee system.

1. Pull the bean container out.

Figure 3-3: CVA4070 Beans Container

2 . Push the lid back and fill the container with roasted coffee beans.

25

Technical Information

CVA4070 / CVA4075 Coffee Systems

3. Push the lid back into place and put the beans container back into the appliance.

4. Close the do or.

3.6 Filling Ground Coffee

A funnel for ground coffee is pr ovided in case you would like to prepare a different coffee type, e.g. decaffeinated coffee.

3 .7

Figure 3-4 : CVA4070 Ground Coffee Funnel Lid

1. Pull the container for the ground coffee out of the applian ce and lift the funnel lid.

2. Place one spoo nful of ground coffee into the funnel,(using the supplied spoon) and close the lid.

3. Push the container into the applian ce and close the door.

See "Making Coffee - Espresso and coffee made from ground coffee".

The lines must be rinsed daily before the first use. This will happen automatically if "Rinse automatic" is set to "On" (see "Settings - Rins e

Automatic") and the machine is cold. After heating, hot water runs out o f the two spouts into the drip tray.

Adjusting the Dispenser Height

To prevent the coffee or espresso from cooling prematurely and to achieve a better crema the coffee dispensense can be adjusted to minimize the distance to the cup.

26

CVA4070 / CVA4075 Coffee Systems

3.8

F igure 3-7: CVA4070 Dispenser Height

1. Pull the coffee dispenser slowly up or down.

Adjust the Grinder Setting

Technical Information

Figure 3-8: CVA4070 Grinder Adjustment

1. Push the slide control to the left for a finer grind or to the right for a coarser grind.

• You should be able to feel the notches when moving the slide control.

• If the slide control will not move:

1. Close the machine and dispen se a cup of coffee.

2. Then try to move the slide control again

27

Technical Information

3.9

3.10

3 .11

CVA4070 / CVA4075 Coffee Systems

Steam System

The appliance has two heating systems. That allow for independent preparation of froth/cappuccino or espresso/coffee. The second heat ing system can be turned off to save energy during the heating phase e.g. if froth is not prepared very often.

When the steam system is turned off and froth or cappuccino is selected, the unit must heat up first to produce steam. As long as the coffee system was not completely turned off, the steam system is on.

The steam system is turned on by default.

F roth Dispenser/Intake Hose

Clean the froth dispenser after each use, otherwise they may become blocked with dried milk and hard to clean.

Rinsing does not replace cleaning in the dishw asher.

1. Select "Care".

2. Select "Rinse s ystem".

3. Set a glass with water u nder the intake hose and select "OK".

The intake hose takes in the water and rinses it.

Cleaning in the Dishwasher

To clean the froth dispenser in the dishw asher, take the parts from the machine. Regular cleaning in the dishwasher is important, so that the froth dispenser does not clog over time, when milk is not removed durin g rinsing. To avoid dispenser clogging. Regular cleaning is recommended.

All dispenser parts are D/W safe.

1 Turn the cover above the spout to the left

2 Pull the froth dispenser out of the machine ,

holding it by the spout and the intake hose.

Figure 3-9: CVA4070 Frother Spout Rem oval

28

CVA4070 / CVA4075 Coffee Systems

F unction 4 .0

4 .1 Optical Interface

1 Optical interface

F igure 4-1: CVA 4070 Control Panal

Technical Information

The appliance is equipped with an optical interface for diagnostic support and program updates (Figure 4-1, item 1). It can be located with the function “Find optical interface” of the Miele Diagnostic Support.

4 .2 Control Electronic EPX

The control electronic is located i n the door (Figure 1-2, Item 8).

It is connected to the power elect ronic via a communication cable and controls the messages in the display.

29

Technical Information

Brew Unit Controls 4 .3

4 .3.1 Position of the Microswitches

CVA4070 / CVA4075 Coffee Systems

1 Microswitch grinding amount compensation

2 Microswitch brew unit present

3 Microswitch top position control (home position)

4 Microswitch bottom position control (compres sing and drain position)

Fig ure 4-2: CVA4070 Brew Unit

The brew unit is controlled by 4 microswitches (Figure 4-2).

After the brew unit is activated, if one of the two microswitch controls

(Figure 4--2, Item 3 & Item 4) is not switched within approx. 10 s, then fault code F73 is registered.

30

CVA4070 / CVA4075 Coffee Systems

4 .3.2 Brew Unit Present Control

Technical Information

If the brew unit is seated, the mi croswitch brew unit present switches

(Figure 4-2, Item 2) will be activated.

4 .3.3 Electronic Grinding Amount Compensation

The grinding amount compensation balances out dif ferent grinder settings and coffee types.

The grinding amou nt can be programmed for the various coffee types

(coffee, espresso, cappuccino) in the customer programming mode. The available range is Step 0 to 17. This corresponds to a grinding time of 5 .5 to 9.5 s (± 1.6 s grinding amount compensation). To prevent an overfill of the brew unit, the grinding time is limited to a maximum of 10 seconds.

1 Brew unit switching cam

2 Grinding amount compensation microswitch

Fig ure 4-3: CVA4070 Brew Unit Switc h

31

Technical Information

CVA4070 / CVA4075 Coffee Systems

During the brewing process, the cams of the brew unit move past the microswitch. (Figure 4-3, Item 2). The farther the cams move, the more ground coffee is in the brew unit. Five positions can be registered:

Table 4-1: CVA4070 Ground Coffee Setting

1, 2, 3 Areas of measurable volume 1, 2 and 3

Figure 4-4: CVA4070 Brew Unit Volume

32

4 .3.4

CVA4070 / CVA4075 Coffee Systems

Technical Information

1, 2, 3 Volume areas 1, 2 and 3

igu re 4-5: CVA4070 Ground Coffee Volume

The ground coffee amount can be measured in three volume areas

(Figure 4-4), which correspond to the volume areas at the appliance

(Figure 4-5).

If the ground c offee amount deviates from the set amount, then in the next grinding step the grinding time is extended by approx. 0.2 s, or shortened by approx. 0.2 s, as needed. Since the maximum time for compensation is ± 1.6 s, this step can be repeated up to 8 times.

Brew Unit Drive, Home Position

Figure 4-6: CVA4070 Rear View.

33

Technical Information

Figure 4-7: CVA4070 Front View.

CVA4070 / CVA4075 Coffee Systems

Pawl

If the brew unit is in the home position, the left cam of the double cam element activates the top microswitch; the bottom microswitch is not switched (Figure 4-6). The pawl is in the home position (Figure 4-7).

34

CVA4070 / CVA4075 Coffee Systems

Technical Information

4 .3.5 Brew Unit Drive, Compressing Position (Brew Position)

Figure 4-8: CVA4070 Rear View

Pawl

Figure 4-9: CVA4070 Front View

The drive moves until the secon d cam of the double cam element switches the bottom microswitch, and the top microswitch is no longer switched (Figure 4-8). The pawl presses down on the spring (Figur e 4-9) and closes the drain valve. The ground coffee is slightly compressed an d brewed.

35

Technical Information

Brew Un it Drive, Drain Position 4.3.6

CVA4070 / CVA4075 Coffee Systems

Figure 4-10: CVA4070 Rear View

Figure 4-11: CVA4070 Front View

After the coffee is brewed, the dr ive moves back until the first cam of the double cam element activates the bottom microswitch and the top microswitch is switched (Figure 4-10) .

The tension of the spring is released, the drain valve is opened, and the residual water runs int o the drip tray before the coffee puck is dropped.

36

CVA4070 / CVA4075 Coffee Systems

4 .4

4.4.1

Water Paths

General View

Technical Information

1 Waste container

2 Cappuccinatore

3 Water tank reed s witch

10 Flow-thru heater coffee/hot water

11 Pressure relief valve

12 Hot water solenoid

4 Water tank

5 Pressure relief valve

13 Drain valve

14 Brew unit

6 p

7 Flow-thru heater steam solen

16 Hot water dis oid penser

Flow 17

9 Coffee/hot water pump dispenser

18 Drip tray

Fig ure 4-12: CVA4070 General Water Path View

37

Technical Information

Water Path – Making Coffee 4 .4.2

CVA4070 / CVA4075 Coffee Systems

1 Waste container 11 Pressure relief valve

3 Water tank reed switch

4

13 Drain valve

14

Flow 17

9 Coffee/hot water pump dispenser

18 Drip tray

10 Flow-thru heater coffee/hot water

F igure 4-13: CVA4070 Coffe e ater P ath View

When “coffee”, or “espresso” is selected, the coffee/hot water pumps draws water from the water tank, via the flow meter. Then the pump coffee/hot water pumps the water through the flow-thru heater coffee/h ot water. If there is excess pressure, the pressure relief valve opens. Th e hot water is pushed through the brew chamber of the brew unit, which is filled with coffee, and the coffee runs through the dispenser below the brew unit into the cup. The coffee puck drops into the waste container, and the residual water runs into the drip tray, via the drain valve.

38

CVA4070 / CVA4075 Coffee Systems

4 .4.3 Water Path – Hot Water

3 Water tank reed switch

4 Water tank

8 Flow meter

9 Coffee/hot water pump eat coffee/h ot wat er

11 Pressure relief valve

12 Hot water solenoid

16 Hot water dispenser

18 Drip tray

Fig ure 4-14: CVA4070 Hot Wa ter Path View

Technical Information

When “hot water” is selected, the coffee/hot water pump draws water from the water tank, via the flow meter. The water is then pumped through the flow-thru heater coffee/hot water. If there is excess pressu re, the pressure relief valve opens. The hot water solenoid opens the h ot water path, and the hot water runs through the hot water dispenser into the cup.

39

Technical Information

Water Path – Steam 4 .4.4

2 Cappuccinatore

3 Water tank reed switch

4 Water tank

5 Pressure relief va lve

CVA4070 / CVA4075 Coffee Systems

6 Steam pump

7 Flow-thru heater steam

15 Steam solenoi d

18 Drip tray

Figure 4-15: CVA407 0 Steam Wate r Path View

When “cappuccino” or “milk froth” is selected, the steam pump draws water from the water tank. The water is then pumped through the flowthru heater steam. If there is excess pressure, the pressure relief valve opens. The steam solenoid opens the path for the steam, and the steam issues from the cappuccinatore.

4 .5 Appliance Status After a Power Disruption

After a power disruption, the appliance remains switched off (standby).

The fault memory as well as all settings made by th e customer remain intact.

40

CVA4070 / CVA4075 Coffee Systems

5.0

5.1

Service

Appliance – Remove from Cabinet

1. Open the door of the unit.

2. Empty containers and the drip tray.

1. Appliance retaining screws

Fig ure 5-1: CVA4070 Serv ice View

3. Remove the screws (Figure 5-1, Item 1).

4. Pull the appliance out of the cabinet.

5. Disconnect the unit from power.

41

Technical Information

Technical Information

5 .2 Door Lamps – Remove

1. Open the door of the unit.

1 Retaining screws of cover

CVA4070 / CVA4075 Coffee Systems

Figure 5-2: CVA4070 D oor Lamp Screw Removal

2. Remove the screws (Figure 5-2, Item 1).

3. Remove the cover.

42

CVA4070 / CVA4075 Coffee Systems

Figure 5-3: CVA4070 Door Lamp Removal

3. Unclip the lamps and remove them (Figure 5-3).

Technical Information

43

Technical Information

5.3 Door – Remove

1. Open the door of the unit.

1 Retaining screws right panel

CVA4070 / CVA4075 Coffee Systems

Figu re 5-4: CVA4070 Door S crew Removal

2. Remove the screws on the right panel (Figure 5-4, Item1).

3. Remove the right panel.

44

CVA4070 / CVA4075 Coffee Systems

Technical Information

Figure 5-5: CVA4070 Door Retaining Screw Removal

4. Unplug the connecting plug at the power elec tronic.

5 . Remove the door retaining screws:

• Disconnect the plug to the power electronic (Figu re 5-5, Item 1).

• Release the teflon hoses from th

(Figure 5-5, Item 2). eir connector and pull out

No te

The teflon hoses are colored differently, to prevent crossing the lines during reassembling.

• Remove the screws of the door hinges (Figure 5-5, Item 2).

• Remove the door.

Wa in

To prevent malfunctions in the water system (for example clogging of the valves), ne ver use grease, oil or other lubricants when assembling the water supplying components.

45

Technical Information

5 .4 Hot Water Dispenser – Remove

1. Open the door of the unit.

CVA4070 / CVA4075 Coffee Systems

1 Retaining screws of cover

Fig ure 5-6: CVA4070 Ho t Water Removal

2. Remove the screws of the cover (Figure 5-6, Item1).

3. Remove the cover.

46

CVA4070 / CVA4075 Coffee Systems

1 Retaining screws of bracket

Figure 5-7: CVA4070 Hot Water Retaining Screw Removal

Technical Information

4. Release the teflon hose from its connection and pull it out

(Figure 5-7) .

5. Remove the screws of the bracket (Figure 5-7, Item1).

6. Remove the b racket (Figure 5-7).

7. Pull the hot water dispenser downward and remove it.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), ne ver use grease, oil or other lubricants when assembling the water supplying components.

47

Technical Information

5 .5 Cappuccinatore – Remove

1. Open the door of the unit.

1 Retaining screws of cover

CVA4070 / CVA4075 Coffee Systems

Figure 5-8: CVA4070 Cappuccinatore Screw Removal

2 . Remove the screws of the cover (Figure 5-8).

3. Remove the cover.

48

CVA4070 / CVA4075 Coffee Systems

Technical Information

1 Retaining screws of bracket

Figure 5-9: CVA4070 Cap puccinatore Retaining Screw Removal

4 . Release the teflon hose from its connection and pull it out

(020 Fig. 6).

5. Remove the screws of the bracket (Figure 5-9, Item1).

6. Remove the b racket.

7. Pull the Cappuccinatore downward and remove it.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), ne ver use grease, oil or other lubricants when assembling the water supplying components.

49

Technical Information

5 .6

CVA4070 / CVA4075 Coffee Systems

Brew Unit Drive – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the retaining screw s of the appliance lid.

3. Take the lid off.

1 Service door retaining screws

Fig ure 5-10: CVA4070 Brew Drive Screw Removal

4. Remove the retaining screws of the service door (Figure 10, Item 1).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

50

CVA4070 / CVA4075 Coffee Systems

1 Microswitch grinding amount compensation

2 Brew unit drive

Fig ure 5-11: CV A4070 Brew Unit Drive Removal

Technical Information

7. Disconnect the plug of the brew unit drive (Figure 5-11, Item 2).

8. Disconnect the plug (ST4) from the power electronic.

9. Open the door of the unit.

10. Take the containers out of the appliance.

51

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-12: CVA4070 Brew Unit Removal

1 1. Release the brew unit and take it out of the appliance (Figure 5-12).

52

CVA4070 / CVA4075 Coffee Systems

Technical Information

1 Brew unit drive retaining screws

Fig ure 5-13: CVA4070 Brew Un it Retaining Screw Removal

12. Remove the brew unit drive retaining screws (Figure 5-13, Item 1).

13. Take the brew unit drive out toward the rear.

Note

When installing the brew unit drive, make sure that the pawl is set in the home position, refer to Figure 6-1.

53

Technical Information

5 .7

CVA4070 / CVA4075 Coffee Systems

Microswitch Grinding Amount Compensation – Remove

1. Appliance – Remove from cabinet”, (figure 5-1).

2. Remove the retaining screws of the appliance cover.

3. Remove the cover.

1 Service door retaining screws

Fig ure 5-14: CVA4070 Serv ice Door Retaining Screw Removal

4. Remove the service door screws (Figure 5-14, Item 1).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

54

CVA4070 / CVA4075 Coffee Systems

1 Microswitch grinding amount compensation

2 Brew unit drive

Figure 5-15: CVA4070 Microswitch Removal

Technical Information

7. Disconnect the plug from the microswitch (Figure 5-15, Item 1).

8. Unclip the microswitch and take it out.

55

Technical Information

5 .8

CVA4070 / CVA4075 Coffee Systems

Grinder – Remove

1. Appliance – Remove from cabinet ( Figure 5.1).

2. Remove the retain ing screws of the appliance lid.

3. Remove the lid.

1 Service door retaining screws

Fig ure 5-16: CVA4070 Grinder S crew Removal

4. Remove the service door retaining screws (Figure 5-16).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

56

CVA4070 / CVA4075 Coffee Systems

Figure 5-17: CVA4070 Grinder Unit Removal

7 . Take the bean container out.

57

Technical Information

Technical Information

1 Retaining screws of the bean container base

CVA4070 / CVA4075 Coffee Systems

Fig ure 5-18: CVA4070 Bean Containe r Screw Removal

8. Remove the retaining screws of the base (Figure 5-18, Item1).

58

CVA4070 / CVA4075 Coffee Systems

Figure 5-19: CVA4070 Bean Container Removal

Technical Information

9. Pull the handle off the adjustment lever (Figure 5-19).

10. Take the base out.

59

Technical Information

1 Grinder retaining screws

CVA4070 / CVA4075 Coffee Systems

F igure 5-20: CVA407 0 Grinder Retaining Screws Removal

11. Slide the adjustment lever aside (Figure 5-20).

12. Remove the grinder retaining screws (Figure 5-20, Item1).

13. Take the grinder out.

14. Pull the connecting plug off the grinder.

60

CVA4070 / CVA4075 Coffee Systems

5 .9 Hot water Solenoid – Remove

1 Retaining screws of support plate

Technical Information

Figure 5-20: CVA4070 Grinder Retaining Screws Removal

1. Remove the screws of the support plate (Figure 5-2 0, Item 1).

2. Open the support plate.

61

Technical Information

1 Steam solenoid

2 Hot water solenoid

CVA4070 / CVA4075 Coffee Systems

F igure 5-21: CVA 4070 Solenoid Removal

62

CVA4070 / CVA4075 Coffee Systems

Figure 5-22: CVA4070 Solenoid Removal

Technical Information

3. Pull out the safety springs at the connection of the hot water solenoid

(Figure 5-22).

4. Take the solenoid out.

5. Pull the connec ting plug off the solenoid.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), ne ver use grease, oil or other lubricants when assembling the water supplying components.

63

Technical Information

Steam Solenoid – Remove 5 .10

1 Retaining screws of support plate

CVA4070 / CVA4075 Coffee Systems

Figure 5-23: CVA4070 Soleno id Screw Removal

1. Remove the screws of the support plate (Figure 5-23, Item1).

2. Open the support plate.

64

CVA4070 / CVA4075 Coffee Systems

1 Steam solenoid

2 Hot water solenoid

Figure 5-24: CVA4070 Solenoid Removal

65

Technical Information

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-25: CVA4070 Solenoid Removal

3. Pull out the safety springs at the connection of the steam solenoid

(Figure 5-25).

4. Remove the solenoid.

5. Pull the connec ting plug off the solenoid.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), ne ver use grease, oil or other lubricants when assembling the water supplying components.

66

CVA4070 / CVA4075 Coffee Systems

5 .11 Flow-thru Heater Coffee/Hot Water – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the cover retaining screws.

3. Remove the cover.

Technical Information

1 Service door retaining screws

Figure 5-26: CVA4070 Rear Screw Removal

4. Remove the service door screws (Figure 5-26, Item1).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

67

Technical Information

1 Flow-thru heater steam

2 Flow-thru heater coffee/hot water

Figure 5-27: CVA4070 Flow-thru Heater

CVA4070 / CVA4075 Coffee Systems

7. Remove the rear wall retaining scr ews at the bottom.

8. Take off the lower rear wall.

1 Retaining screws flow-thru heater

Figure 5-28: CVA4070 Flow-thru Heater Screw Removal

68

CVA4070 / CVA4075 Coffee Systems

Technical Information

9. Pull out the spring clips at the water connection (Figure 5-28).

10. Remove the mounting platform, shelf screws of the flow-thru heater

(Figure 5-28, Item. 1).

11. Remove the flow-thru heater.

1 Temperature limiter

2 Temperature fuse

3 Temperature sensor

F igu re 5-29: CVA4070 Flow-thru Heater Temperature

12. Remove the temperature sensor, temperature limiter and temperature fuse from the flow-thru heater (Figure 5-29, Items 1 – 3).

13. Pull the connectors off the flow-thru heater.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), never use grease, oil or othe r lubricants when assembling the water supp lying components.

69

Technical Information

5 .12

CVA4070 / CVA4075 Coffee Systems

Flow-thru Heater Steam – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the retaining screws of the a ppliance cover.

3. Remove the cover.

1 Service door retaining screws

Figure 5-30: CVA4070 Rear Service Door Retaining Screw Removal

4. Remove the service door retaining screws (Figure 30, Item1).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

Note:

Both steam and hot water have center screw anchoring it to platform.

70

CVA4070 / CVA4075 Coffee Systems

1 Flow-thru heater steam

2 Flow-thru heater coffee/hot water

Figure 5-3 1: CVA40 70 Flow-thru Heater Steam

1 Retaining screws flow-thru heater

F igure 5-32 : CVA4070 Flow-thru Heater Steam

71

Technical Information

Technical Information

CVA4070 / CVA4075 Coffee Systems

7. Pull out the spring clips at the connection ( Figure 32).

8. Remove the flow-thru heater mounting screws (Figure 32, Item 1).

9. S/B Remove center screw.

10. Remove the flow-thru heater.

1 Temperature limiter

2 Temperature sensor

3 Temperature fuse

F igure 5-33: CVA 4070 Temperature

10. Remove the temperature limiter, temperature sensor and temperature fuse (Figure 5-33, Items 1 – 3).

11. Pull the connectors off the flow-thru heater.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), never use grease, oil or other lubricants when assembling the water supplying components.

72

CVA4070 / CVA4075 Coffee Systems

5 .13 Coffee/Hot Water Pump – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the cover retaining screws.

3. Remove the cover.

Technical Information

1 Service door retaining screws

Figure 5-34: CVA4070 Rear Service Door Screw Removal

4. Remove the service door retaining screws (Figure 534, Item 1).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service door.

73

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-35: CVA4070 With Service Door Open

7. Remove the rear wall retaining screws at the bottom.

8 . Remove the lower wall.

74

CVA4070 / CVA4075 Coffee Systems

1 Coffee/hot water pump

2 Steam pump

F igure 5-36: CVA40 70 Coffee/Hot Water Pump

75

Technical Information

Technical Information

1 Safety valve

2 Pump retaining screws

3 Temperature limiter

CVA4070 / CVA4075 Coffee Systems

Figure 5-37: CVA4070 Coffee/Hot Water Pump Removal

9. Release the te flon hose from the safety valve and disconnect it

(Figure 5-37, Item 1).

10. Pull the connectors off the pump.

11. Remove the pump retaining screws (Figure 5-37, Item 2).

12. Remove the pump.

13. Pull the silicone hose off the pump (Figure 5-37).

14.

Unclip the temperature limiter and remove it (Figure 5-37, Item 3).

15. Unscrew the safety valve (Figure 5 -37, Item1).

16. Take the retaining brackets off the pump.

Warning!

To prevent malfunctions in the water system (for example clogging of the valves), never use grease, oil or other lubricants when assembling the water supplying components.

76

CVA4070 / CVA4075 Coffee Systems

5 .14 Steam Pump – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the cover retaining screws.

3. Remove the cover.

Technical Information

1 Service door retaining screws.

Figure 5-38: CVA4070 Service Door Steam Pump Removal

4. Remove the service d oor retaining screws (Figure 5-38, Item 1).

5. Take the cable connecting the control and the power electronic out of its guide.

6 . Open the service door.

77

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-39: CVA4070 Steam Pump Removal

7. Remove the rear wall retaining screws at the bottom.

8. Remove the lower wall.

78

CVA4070 / CVA4075 Coffee Systems

1 Coffee/hot water pump

2 Steam pump

Figure 5-40: CVA4070 Coffee/Hot Water Pump Removal

Technical Information

79

Technical Information

1 Pump retaining screws

2 Temperature limiter

CVA4070 / CVA4075 Coffee Systems

Figure 5-41: CVA4070 Pump Retaining Screws Removal

9. Pull the connecto rs off the pump.

10. Remove the pump bracket retaining screws (Figure 5-41, Item 1).

11. Remove the pump.

1 2. Remove the retaining clip from the 90 ° connector and disconnect the teflon hose (Figure 5-41).

13. Pull the silicone hose off the pump (Figure 5-41).

14. Unclip the temperature limiter and remove it (Figure 5-41, Item 2).

15. Take the retaining brackets off the pump.

Warning!

To prevent malfunctions in the water system (for example clogging of t he valves), never use grease, oil or other lubrica nts when assembling the water supplying components.

80

CVA4070 / CVA4075 Coffee Systems

5 .15 Flow Meter – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the cover retaining screws.

3. Remove the cover.

Technical Information

1 Service door retaining screws.

Figure 5-42: CVA4070 Flow Meter Screws Removal

4. Remove the service door retaining screws (Figure 5-42).

5. Take the cable connecting the control and the power electronic out of its guide.

6. Open the service do or.

81

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-43: CVA4070 Flow Meter Removal

7. Remove the rear wall retaining screws at the bottom.

8. Remove the lower wall.

82

CVA4070 / CVA4075 Coffee Systems

1 Flow meter

Figure 5-44: CVA4070 Flow Meter Removal

83

Technical Information

Technical Information

1 Flow meter

2 Safety ring

CVA4070 / CVA4075 Coffee Systems

Figure 5-45: CVA4070 Flow Meter Safety Ring Removal

9. Pull the silicone hoses off the flow meter (Figure 5-45).

10. Pull the connector off the flow meter.

11. Pull the flow meter upward out of the safety ring and remove it

(Figure 5-45, Item 2).

Warning!

To prevent malfunctions in the water system (for exa mple clogging of the valves), never use grease, oil or other lubricants when assembling the water supplying components.

84

CVA4070 / CVA4075 Coffee Systems

5 .15 Pow er Electronic EPL – Remove

1. Appliance – Remove from cabinet”, (Figure 5-1).

2. Remove the rear wall retaining screws at the top.

3. Remove the top rear wall.

Technical Information

1 Power electronic retaining screws

Figure 5-46: CVA4070 Power Electronic Retaining Screws Removal

4. Remove the screws of the power electronic (Figure 5-46, Item 1).

5. Remove the power electronic.

6. Pull the connectors off the power electronic.

85

Technical Information

CVA4070 / CVA4075 Coffee Systems

Figure 5-47: CVA4070 Connecting Plugs and Pin Allocations.

Plug # Pins Usage / Component

ST1

1

2 vacant (solenoid for hard plumbing)

3

1

Steam solenoid

ST2

2

3

Hot water solenoid

4

1

ST3 Reed contact ground coffee funnel

2

Table 5-1: CVA4070 Connecting Plugs and Pin Allocations (Cont. on Table 5-2)

86

CVA4070 / CVA4075 Coffee Systems

Technical Information

Plug # Pins

3

U sage / Component

Reed contact waste container

4

5

Transmitter for electronic light barrier bean container

6

7

Receiver for electronic light barrier bean container

8

1 Microswitch brew unit 1 compensation

ST4

2 Microswitch brew unit 2 clockwise turn

3 Microswitch brew u nit 3 counter-clockwi se turn

ST5

3

4

5

6

4 Microswitch brew unit 4 present

5 Microswitch brew unit XXXXMasse

1

2

Reed contact water tank fill

Reed contact water tank in units with hard plumbing

Reed contact door closed

ST6

ST7

3

4

5

6

1

2

1

2

7

8

9

10

11

Brew unit motor

Connection to control electronic

Table 5-2: CVA4070 Connecting Plugs and Pin Allocations (Cont. from

Table 5-1) (Cont. on Table 5-3)

87

Technical Information

CVA4070 / CVA4075 Coffee Systems

ST8

ST9

ST10

ST11

ST12

ST13

5

6

7

8

9

1

1

2

3

4

1

2

3

4

LED interior lamp

Temperature sensor NTC coffee/hot water

Temperature sensor NTC steam

Flow meter

10

11

1

2

2

3

1 Connector to main power supply

2 Connection to Plug 12

1 Flow-thru heater steam

2 vacant

3 Flow-thru heater coffee/hot water

4 vacant

5 Connection to plug 11

6 Interference suppressor

7 Pump coffee/hot water

8 Steam pump

9 vacant

Grinder motor

Connec tor to warming drawer

Table 5-3: 40 Connecting Plugs and P

Table 52) in Allocations (Cont. from

88

CVA4070 / CVA4075 Coffee Systems

Technical Information

6.0 Fault

6.1 Programming Mode

Initial requirements

1 . Switch the applian ce off.

Accessing

Note

Access has to be completed within 10 seconds.

2. Touch pad Clear and hold it.

3. Touch pad On/Off once.

4 . Release pad Clear.

5. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appe ars.

Ackno wledgement indicator

The display shows the positions of the programm ing mode

Programming.

Options

1. Touch the pad next to the desired position (refer Table).

2. Touch the pad next to the desired setting (refer Table).

B ack (without saving) : Touch pad Clear.

Save and quit

1. Save and back: Touch pad next to OK.

2 . To end: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

89

Technical Information

CVA4070 / CVA4075 Coffee Systems

Position Setting Function

Factory

Setting

Reset yes cestina dansk deutsch english espanol francais italiano magyar

Settings Language nederlands

All settings made by the customer (except language) are deleted. All own user profiles are deleted. The fault code memory remains.

The language remains, even when the program is reset to factory setting. If the language setting is wrong, use the bilder\t464 0s02.tif icon as a guide to the language menu. norsk polski português suomi svenska türkce greek russian on The Time display stays switched on

Display on for 6 0 When the unit is switched off, seconds the time display dims after 60 seconds.

Settings Time

Time

Format

12 h

24 h

The time is shown in the 12 hour format.

The time is shown in the 24 hour format.

Setting e.g. 8:34 Use the pads +/– to set the current time.

Table 6-1: CVA4070 Program Mode (Cont. on Table 6-2)

90

-

-

On

24 h

-

CVA4070 / CVA4075 Coffee Systems

Technical Information

Po sition Setting

Facto ry

Setting

Start at e. g. 7:30 U se the pads +/– to set the desired ti me.

Settings Timer

Switch off after e. g. 9:00

Switch on at e. g. 7:30 The unit is switched on at the specified time.

Active

Es

Switch off at e. g. 9:00 The unit is switched off at the specified time. presso

Step 1 –

17

Grinding Time

3.9 s – 10 s

Settings

Grinding

Amount

Set

C

Switch off after e. g. 0:15 offee

Step 1 –

17

Cap puccino

Step 1 –

17

-

-

-

Step 9

Step 9

Step 9

Settings Pre-Brewing Normal Pre-brew s Without

Minimum

Low

= 205 ° F (96 °C) (in the flow-thru he ater)

= 208 °F (98 °C) (in the flow-thru heater)

Settings Temperature Espresso

Medium = 212 °F (100 °C) (in the flow-thru heater)

High = 215 °F (102 °C) (in the flow-thru hea ter)

Maximum = 219 °F (104 °C the flow-thru hea

) (in ter)

Table 6-2: o a

Medium

91

Technical Information

CVA4070 / CVA4075 Coffee Systems

Settings Temperature Coffee

Factory

Setting

Minimum = 205 °F (96 °C) (in the flow-thru heater)

Low = 208 °F (98 °C) (in the flow-thru heater)

Medium = 212 °F (100 °C) (in the flow-thru heater)

High = 215 °F (102 °C) (in the flow-thru heater)

Maximum = 219 °F (104 °C) (in the flo w-thru hea ter)

Medium

Minimum = 205 °F (96 °C) (in the flow-thru heater)

Low = 208 °F (98 °C) (in the flow-thru heater)

Settings Temperature Ca ppuccin o

Medium = 212 °F (100 °C) (in the flow-thru heater)

Medium

High = 215 °F (102 °C) (in the flow-thru heater)

Maximum = 219 °F (104 °C) (in the flow-thru heater)

Minimum = 205 °F (96 °C) (in the flow-thru heater)

Low = 208 °F (98 °C) (in the flow-thru heater)

Settings Temperature Hot Water

Medium = 212 °F (100 °C) (in the flow-thru heater)

High = 215 °F (102 °C) (in the flow-thru heater)

Medium

Maximum = 219 °F (104 °C) (in the flow-thru heater)

On The appliance rinses when it’s switched on, and after a beverage is dispensed, shortly before it switches off.

On

Off Automatic rinse is switched off.

Table 6-3: CVA4070 Program Mode (Cont. from Table 6-2; Cont. on Table 6-4)

92

CVA4070 / CVA4075 Coffee Systems

Technical Information

Settings L

Position Setting ighting

System

Automatic

Dim

Top

Bottom

On

Off

On

Off s tep 1 –

17 step 1 –

17 e. g.

11

Accept s

Do Not

Accept

Soft 1

Medium 2

Settings W ater

Hard 3

Very Hard

4

Fa ctory

Setting

The steam system is switched on.

The steam system is switched off.

The lamps of the door and the interior are switched on.

On

The lamps of the door and the interior are switched off.

On

The l amps of the appliance interior can be dimmed.

Step 17

The lamps of the appliance door can be dimmed.

The number of coffees, espressos and capuccinos dispensed is indicated.

Step 17

-

System lock is switched on. The appliance can be safeguarded agai accidental switchnst on.

Do Not

Accept

System lock is switched off. refer to 021 Tab le 4

Very Hard

4

Table 6-4: CVA4070 Program Mode (Cont. from T able 6-3; Cont. on Ta ble 6-5)

93

Technical Information

CVA4070 / CVA4075 Coffee Systems

Position

Settings User Profile

Select

Create

C hange name

Delete

Settings

-

Function

Setting

Standard The main menu contains a standard user profile: The settings for the grinding amount, temperature, prebrewing and portion size correspond to the factory setting.

Up to 7 own user profiles

The selected user profile is indicated in the main menu.

Grind ing amount temperature, pre-

, brewing and port ion size can be modified in the menu item

Settings for each user profile. e. g. name

-

Create a new user profile. Up to 7 user profiles are possible .

Change the name o f a user profile.

Standard

-

-

- never

Delete a user profile.

The display of the user profile in the main menu never changes over to

Standard.

Ch ange-ov er

At switchon

After beverage is dispensed

The display of the user profile in the main menu changes over to Standard as the machine is switched on.

The display of the user profile in the main menu changes over to Standard after each beverag e service.

Table 6-5: CVA4070 Program Mode (Cont. from Table 6-4; Cont. on Table 6-6)

94

CVA4070 / CVA4075 Coffee Systems

Technical Information

Customer

Service

Position Settings

Settings Display

Settings

Settings

Contrast

Brightness

Step 1 –

16

Step 1 –

16

Factory

Function

Setting

Low to High Step 8

Dim to Bright Step 14

Signal

Tones

Volume

Touch Pad

Tones

Step 1 - Low to High

18

On

Off

N o

Touch pad s emit a tone when they are touched.

Touch pads do not emit a tone when they are touched.

Back , without resto ring the fac setting. tory

Factory

Settings

All settings Yes

No

All settings made by the customer

(except language) a re reset to factory setting.

Back, without deleting the user profiles

User profiles

Yes Back, with out deleting the user profiles.

A restart is like a break from the power supply. The fault memory, as

Restart - ll settings and user profiles created by the customer will remain.

Step 18

On

-

-

-

Table 6-6: CVA4070 Program Mode (C ont.

from T able 6-5; Cont.

on Table 6-7)

95

Technical Information

CVA4070 / CVA4075 Coffee Systems

Position Settings

Customer

Service

Appliance

Variant

Hard plumbing Not

Available

Release Descale

Release Cleaning

Available

No

Yes

No

Y es

Setting

The appliance is hooked-up to plumbing.

The appliance cannot b e hookedup to plumbing.

Back, without lifting the descale lock.

Release the descale lock. *1

Back, without lifting the cleaning lock.

Not

Available

-

-

Rele ase the cleaning lock. *2

Table 6-7: CVA4070 Pro gram Mode (Cont. from T able 6-6)

*1 Attention! After service work is completed, descale the ap pliance.

*2 Attention! After service work is completed, clean the appliance .

96

CVA4070 / CVA4075 Coffee Systems

6 .1.1

Technical Information

Reset

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowled gement indicator

The display shows the positions of the programming mode

Programming .

O ptions

1. Touch th e pad next to Reset.

No : Back, without Reset.

Yes: All settings made by the customer (except deleted. All own user profiles are de memory remains. language) are leted. The fault code

Save and quit

1. Touch the On/Off pad.

97

Technical Information

6.1.2 Language – S et

Initial requirements

Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows t he positions of the programming mode

Programming .

Options

1. Touch pad next to Language.

2. Touch th e pad next to the desired language.

3. Back (without saving): Touch pad Clear.

Available languages: cestina, dansk, deu tsch, english, espanol, francais, italiano, magyar, nederlands, nor sk, polski, português, suomi, svenska, türkce, greek, russian.

Note

The language remains even if the factory setting is restored.

If th e language is not set correctly , use the bilder\t4640s02.tif icon as a guide to get to the setting for language.

Save and quit

1. Save and ba ck: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

98

CVA4070 / CVA4075 Coffee Systems

6.1.3

Technical Information

Time – Set

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledge ment indicator

The display sh ows the positions of the programming mode Programming.

Options

1. Touch pad next to Time.

2. Touch pad next to the desired se tting.

3. Back (wi thout saving): Touch pad Clear.

Indica tion: on : The panel shows the time of day. on for 60 seconds: When the appliance is switched off, the display dims

after 60 sec onds.

Factory setting:

on.

Tim e format:

12 hour: The time is shown in the 12 hour format.

24 hour: The time is shown in t he 24 hour format.

Factory setting : 24 hours.

Set: Ente r the current time using the pads + or –.

Save and quit

1. Save and back: Touch pad next to OK .

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

99

Technical Information

6.1.4 Timer – Set / Activate

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch pad next to Clock Timer.

2. Touch pad next to the desired activation.

3. Ba ck (without saving) : Touch pad Clear.

To Set switch on at: If the timer is activate d, the appliance will be switched on at the specified time. Enter the des ired time via the touch pads + or –. switch off after: The appliance will be switched off after the specified time has elapsed. Enter the desired time via the touch pads + or – .

Fac tory setting: 2:00 hours. switch off at: If the timer is act ivated, the appliance will be switched off at the specified time. Enter the desired time via the touch pads + or –.

To Activate on: Switches the feature on at a given time. off: Switches the feature off at a given time.

Save and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

100

CVA4070 / CVA4075 Coffee Systems

4.1.5

Technical Information

Grinding Amount – Set

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 t imes and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicato r

The display shows the positi ons of the programming mode

Programming.

Options

1. Touch pad next to Grinding amount.

2. Touch pad next to the desired type of coffee.

3. Ba ck (without saving): Touch pad Clear.

Espresso: Set the desired grinding amount using the touch pads less or more.

Range: Step 1 – 17 repre se nting a grinding time of 3.9 s – 10 s.

Factory setting: Step 9.

Coffee: Set the desired grindi ng amount using the touch pads less or

more.

Range: Step 1 – 17 represe nting a grinding time of 3.9 s – 10 s.

Factory setting: Step 9.

Cappuccino: Set the desired grinding amount using the touch pads less or more.

Range: Step 1 – 17 representing a grin ding time of 3.9 s – 10 s.

Factory setting: Step 9.

S ave and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

101

Technical Information

6.1.6 Pre -brewing – Set

Init ial requirements

Switch the applian ce off.

Acc essing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off o nce.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until t he programming mode appears.

Acknowledgement in dicator

T he display shows the p ositions of the programming mode

Programming.

Options

1. Touch pa d next to Pre-brewing.

2. Tou ch pa d next to the desired setting.

3. Back (without saving): Touch pad Clear.

Long: 3.0 s pre-brewing.

Normal: 1.5 s pre-brewing .

Without: no pre-brewing.

Factory setting : without.

Save and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

102

CVA4070 / CVA4075 Coffee Systems

6.1.7 Tem peratures for Coffee a nd Hot Water – Set

Technical Information

Initial requirements

1. Switch the a ppliance off.

Accessing

Note

Complete the access w ithin 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

1. The display shows the positions of the programming mode

Programming.

Options

1. Touch pad next to Temperature.

2. Touch pad next to the desired setting.

3. Ba ck (without saving): Touch pad Clear.

Espresso: minimum: Represents 96 °C (in the flow-thru heater). low: Represents 98 °C (in th medium: Represent s 100 e flow-thru heater).

°C (in the flow-thru heater). high: Represents 102 °C (in the flow-thru heater). maximum: Represents 104 °C (in the flow-thru heater).

Factory setting: medium.

Coffee: minimum: Represents 96 °C (in the flow-thru heater). low: Represents 98 °C (in the flow-thru heater). mediu m: Represents 100 °C (in the flow-thru heater). high: Represents 102 °C (in the flo w-thru heater). maximum: Represents 104 °C (in the f low-thru heater).

Factory setting: medium.

Cappuccino: minimum: Represents 96 °C (in the flow-thru heater). low: Represents 98 °C (in the flow-thru heater). medium: Represents 100 °C (in the flow-thru heater). high: Represents 102 °C (in the flow-thru heater). maximum: Represents 104 °C (in the flow-thru heater).

Factory setting: medium.

103

Technical Information

CVA4070 / CVA4075 Coffee Systems

Hot water: minimum: Represents 96 °C (in the flow-thru heater). low: Represents 98 °C (in the flow-thru heater). medium: Represents 100 °C (in the flow-thru heater). high: Represents 102 °C (i n the flow-thru heater). maximum: Represents 104 °C (in the flow-thru heater).

Factory settin g: medium.

Sav e and quit

1.

2.

Save and back: Touch pad next to OK.

End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

104

6

CVA4070 / CVA4075 Coffee Systems

.1.8

Technical Information

Automatic Rinse – On / Off

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming .

Options

1. Touch p ad next to Rinse automatic.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear. on: The appliance rinses when it is switched on, and after dispensing a beverage shortly befor e it switches off. off: Automatic rinse is switched off.

Factory setting: on.

Save and quit

1. Save and ba ck: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

105

Technical Information

6.1.9 Steam System – On / Off

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

2. Touch pad Clear and hold.

3. Touch pad On/Off once.

4. Release pad Clear.

5. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to Steam system.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear. on: The steam system is sw itched on. off:

The steam syste m is switched off.

Factory setting:

on.

Save and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

106

6

CVA4070 / CVA4075 Coffee Systems

.1.10

Technical Information

Door and Interior Lighting – Set

Initial requirem ents

Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to Lighting.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear.

Automatic on: Door and interior lighting are switched on. off: Door and interior light

Factory setting:

on.

ing are switched off.

Dim top: The interior lighting can be set using the touch pads darker or brighter.

Range: Step 1 – 17.

Factory settin g: Step 17. bottom: The door lighting can be set using the touch pads darker or brighter.

Range: Step 1 – 17.

Factory setting: Step 17.

S ave and quit

1. Save and b ack : Touch pad next to OK.

2. End: Touch pad On/Off.

Qu it (without saving)

1. Touch pad On/Off.

107

Technical Information

6.1.11 Co ffee Count – Indica te

Init ial requirements

1. Switch the appliance off.

Acc essing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear an d hold.

2. Touch pad On/Off o nce.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to coffee total.

2. Th e display shows the total number of coffee, espresso and

Save and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

108

6

CVA4070 / CVA4075 Coffee Systems

.1.12

Technical Information

System Lock – Set

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to System lock.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear. accept: The system lock is switched on. The appliance can be safeguarded against ac cidental operation. do not accept: The syst em lock is switched off.

Fac tory setting:

do not accept.

Save and quit

1. Save and ba c k: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

109

Technical Information

6.1.13 Water Hardne ss – Set

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to Water hardness.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear.

Value (approx.) until message "50 servings until descale"

Water Hardness Settings

Soft

Medium

Hard gr/gal

0 - 4

5 - 9

10 - 18

Very Hard > 18

Table 6-7: CVA4070 Water Hardness Setting s

Save

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Q uit (without saving)

1. Touch pad On/Off.

Flow coffee/hot water

(pulses)

150.000

144.000

108.000

72.000

Discharge steam (min )

120

90

60

30

110

CVA4070 / CVA4075 Coffee Systems

6.1.14

Technical Information

User Profile – Set

Initial requirements

Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off o nce.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to User profile.

2. To uch pad next to the desired setting or activation.

3. Back (without saving): Touch pad Clear. select: The main menu shows the selected user profile. In the menu item

“settings”, the grinding am ount, temperature, pre-brewing and portion size can be se t for the respective user profile.

Factory setting:

Standard. The settings for the grinding amount, temperature, prebrewing and portion size are as in the factory setting. create: Create a new user profile (e. g. name). A maximum of 7 user profiles a re possible. change n ame: Change the name of a user profile. delete: Delete a user profile.

Change-over: never: The main menu indicates the user profile and never changes o ver to standard. at switch-on: As the appliance is switched on, the main menu cha nges to a standard user profile.

111

Technical Information

CVA4070 / CVA4075 Coffee Systems after dispensing: After each time a beverage is dispensed, the main menu changes to a standard user profile.

Factory setting: never.

Save and quit

Save a nd back: Touc h pad next to OK.

End: Touch pad On/Off.

Quit (without saving)

Touch pad On/Off.

112

6

CVA4070 / CVA4075 Coffee Systems

.1.15

Technical Information

Display – Set

Initial requirements

Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch p ad next to Display.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear.

Contrast: Set the contrast using the touch pads lower or higher.

Range: Step 1 – 16.

Factory setting: Step 8

Brightness:

Set the brightness using the touch pads darker or bri

Ran ge: Step 1 – 16.

Factory setting: Step 14. ghter.

Save and quit

1. Save and ba ck: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

113

Technical Information

6.1.16 Signal Tones – Set

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1 . Touch p ad next to Signal tones.

2. To uch pad next to the desired setting.

3. Back (without saving): Touch pad Clear.

Volume: Set the volume higher or lower using the touch pads.

Range: Step 1 – 18.

Factory setting: Step 18.

Touch pad tones on: Touch pads emit a tone when pressed. o ff: Touch pads do not emit a tone when pressed.

Factory setting: on.

S ave and quit

Save and back: Touch pad next to OK.

End: Touch pad On/Off.

Quit (without saving)

T ouch pad On/Off.

114

CVA4070 / CVA4075 Coffee Systems

6.1.17

Technical Information

Factory Setting – Restore

Initial requirements

S witch the appliance off.

Accessing

Note

Complete the acce ss w ithin 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch pad next to Factory setting.

2. To uch pad next to the desired action.

3. Back: Touch pad Clear.

All Settings no:

Back, without restoring the f yes: All settings made by the actory setting. customer (except the language) are reset to the factory setting.

Use r profiles no: Back, without deleting the user profiles. yes: All user profiles are delete d.

Save and quit

Touch pad On/Off.

115

Technical Information

6 .1.18 Restart

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. To uch pad next to Customer service.

2. Touch pad next to Restart.

The appliance restarts. A restart is like a disconnection from main power.

The fault code, as well as all set tings made by the customer and user profiles created remain.

Save and quit

1. Touch pad On/Off.

116

CVA4070 / CVA4075 Coffee Systems

6.1.19

Technical Information

Appliance Variant – Set

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

1. Touch pad next to Customer service.

2. To uch pad next to Appliance variant.

3. Touch pad next to the desired setting.

4. Back (without saving): Touch pad Cl ear.

Hard plumbing available: The appliance is h ooked up to plumbing. not available: The appli ance is not hooked up to plumbing.

Factory setting: not available.

Dish warming drawer available:

A dish warming draw er is connected. not available:

No dish warming drawer.

Factory setting: not available.

Save and quit

1. Save and back: Touch pad next to OK.

2. End: Touch pad On/Off.

Quit (without saving)

1. Touch pad On/Off.

117

Technical Information

6.1.20 Descale Lock – Reset

Initial requirements

Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access w ithin 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicator

The display shows the positions of the programming mode

Programming.

Options

Touch pad next to Reset descale. no: Back, without releasing the descale lo ck. yes: The descale lock is lifted.

Save and quit

Tou ch pad On/Off.

Warning!

After service work is completed, descale the appliance.

118

CVA4070 / CVA4075 Coffee Systems

6.1.21

Technical Information

Cleaning L ock – Reset

Initial requirements

1. Switch the appliance off.

Accessing

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 5 times and at the 5th time, hold it until the programming mode appears.

Acknowledgement indicato r

The display shows the positio ns of the programming mode Programming.

Options

1. Touch pad next to Reset cleaning. no: Back, without lifting the cleaning lock.

yes: The cleaning lock is lifted.

Save and quit

Touch pad On/Off.

Warning!

After service work is completed , clean the appliance.

119

Technical Information

6.2 Service M ode Overview

Initial requirements

1. Switch the appliance off.

Accessing

CVA4070 / CVA4075 Coffee Systems

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 3 times and at the 3rd time, hold it until the service mode appears.

Acknowledgement indicator

The display shows the positions of the Service mode.

Options

1. Touch the pad next to the desired position (refer).

2. Touch th e pad next to the desired activation (refer).

3. Ba ck: Touch pad Clear.

Save and quit

1. Touch pad On/Off.

Position Display / Activation Description / Results

ID NUMBER

FAULT MEMORY

EPX

EPL e. g. ID01087 V21 e. g. ID33849 V10

The ID number of the control electronic is displayed

The ID n electron umber of the power ic is displayed registered faults, All faults that have occurred so refer to 021 Table 2 far are i ndicated. To show the fault desc next to the ription, touch the pad

fault.

Delete All saved faults are deleted.

COMPONENT STEAM

TEST VALVE

Open

Close

The solenoid for steam is opened.

The solenoid for steam is closed.

Table 6-8: CVA4070 Service Mode (Continued on Table 6-9)

120

CVA4070 / CVA4075 Coffee Systems

Technical Information

COMPONENT

TEST

HOT WATER

VALVE

COMPONENT

TEST

COMPONENT

TEST

Position

STEAM

PUMP

SYSTEM

DRAIN

PUMP

Display /

Activation

Open

Close initialize

On

Off

On

Off

COMPONENT

TEST

BRE W UNIT

COMPONENT

TEST

GRINDER move clock

counterwise for give period of time n move counterclockwi se for given period of time home position(1) drain position (1) compressing position ( 1)

On

Off

COMPONENT

TEST

WATER

PUMP

On

Off

Description / Results

The solenoid for hot water is opened.

The solenoid for hot water is closed.

The micr its home o switches are tested, and the brew unit is return ed to

position. To prevent mechanical damage, as a final step, alwa ys activate intializing. move clo of time ckwise for given period

The brew unit moves into the resp ective direction.

The brew unit moves into the respective direction.

The grinder is running.

The grin der is switched off.

T he pump coffee/hot water runs.

The pump coffee/hot s witched off. water is

The steam pump runs.

The steam pump is switched off.

The coffee/hot water and the steam pumps operate until both, the coffee/hot water and steam system.

The coffee/hot water an d the steam pumps are switched o ff.

Table 6-9: CVA 4070 Serv ice M ode (Cont. from Tabl e 6-8; Cont. on Table 6-10)

121

Technical Information

COMPONENT

TEST

FLOW–

THRU

HEATER

STEAM

On

Off

CVA4070 / CVA4075 Coffee Systems

Position

On

COMPONENT

TEST

FLOW–THU

HEATER

WATER

Off

Display /

Activation

Description / Results

The flow-thru heater coffee/ho wate r heats. The temperature t indication on the heater goes increases.

The flow-thru heater coffee/hot water is s witched off.

The flow-thru heater steam heats. The temperature indication on the heater increases.

The flow-thru heater steam is switched off.

The dish warming drawer is being heated.

The dish warming drawe switched off. r is

COMPONENT

TEST

DISH

WARMING

DRAWER

N/A US models

COMPONENT

TEST

WATER

SUPPLY

VALVE 1

COMPONENT

TEST

WATER

SUPPLY

VALVE 2

COMPONENT

TEST

WATER

SUPPLY

VALVE 1+2

SENSOR

TEST

DRIP TRAY

On

Off

On

Off

On

Off

On

Off empty full no function no function no function

The drip tray is not full.

The drip tray is full.

SENSOR

TEST

BEAN

CONTAI NER empty full

SENSOR

TEST

BREW

UNIT 1 clos ed open

The bean container is not empty.

The bean container is empty or not inserted.

The microswitch grinding amount compensation is activated.

The microswitch grinding amount compensation is not activated.

Table 6-10: CVA4070 Service Mode (Cont. from Table 6-9; Cont. on Table 6-11)

122

CVA4070 / CVA4075 Coffee Systems

Technical Information

Display /

Position Description / Results

SEN SOR

TEST

SE

TE

NSOR

ST

SENSOR

TEST

SENSOR

TEST

SENSOR

TEST

SENSOR

TEST

SENSOR

TEST

B

2

REW UNIT

BREW U NIT

3

BREW UNIT

4

GROUND

COFFEE

FUNNEL

WASTE

CONTAINER close d o pen

DO OR

CONTACT closed open

WATER

TA NK closed open closed open closed open closed open closed open

The microswitch top positio control i s activated. n

The microswitch top position control is not activated.

The microswitch bottom po control is activated. sition

The microswitch bottom po control is not activated. sition

The brew u nit is locked.

The brew unit is released

The ground coffee funnel is closed.

The ground coffee funnel is open.

The waste container is present.

The waste container is missing

The door is closed.

The door is open

The water tank is seated and filled.

The water tank is not seated or empty

SENSOR

TEST

HARD

PL UMBING closed open no function

SENSOR

TEST

NTC FLOW

THRU

HEATER /

WATER e. g. 48 °C

Indicates the temperature at the flow-thru heater coffee/hot water.

SENSOR

TEST

NTC

FLOW–

THRU

HEATE R

STEAM e. g. 7 4 °C

I fl ndicates the temperature at the ow-thru heater steam.

T able 6-11: CVA 4070 Ser vice Mode (C ont. from Tab le 6-10; Cont. on Table 6-12)

123

Technical Information

CVA4070 / CVA4075 Coffee Systems

Posi

OPERATING H tion

OURS

Display /

Activ ation

FLOW–THRU

HEATER W ATER

FLOW–THRU

HEATER STEAM

ESPRESSOS

DISPENSED

DOUBLE

ESPRESSOS

DISPENSED

COFFEES

DISPENSED

Descrip

Operating hours of the flow-thru heater coffee/hot water.

Operati h ng hours of the flow-thru eater steam.

Number of espressos dispensed. tion / Results

Number of double espressos dispensed

Number of coffees dispensed.

DOUBLE COFFEES

DISPENSED

Number of double coffees dispensed.

CAPPUCCINOS

DISPENSED

Number of cappucinos dispensed.

HOT WATER

DISPENSED

MILK FROTH

DISPENSED

NUMBER OF

DESCALES

Num ber of hot water serving s dispensed.

Number of milk froth servings dispensed.

Shows the number of descales that have been carried out.

NUMBER OF

CLEANIN GS

Number of cleanings that been carried out. have

Table 6-12: CVA4070 Service Mode (Continue d from Table 6-11 )

*1 The positions only become visible once the brew uni t has bee n initialized.

124

CVA4070 / CVA4075 Coffee Systems

6.3

6.3.1

F ault Codes – Read, Save and Delete

F ault Code Accessing

Initial requirements

Switch the appliance off.

Accessing

Technical Information

Note

Complete the access within 10 seconds.

1. Touch pad Clear and hold.

2. Touch pad On/Off once.

3. Release pad Clear.

4. Touch pad Clear 3 times and at the 3rd time, hold it until the service mode appears.

Acknowledgement indicator

The display shows the positions of the Service mode.

Options

1. Touch pad next to Faul t memory.

2. To show the fault description, touch the pad next to the fault.

3. Save the fault and back: Touch pad next to OK. Touch pad Clear.

4. Delete the fault and ba ck: Touch pad next to delete.

Faulty codes Refer to Tables:

Save a nd quit

1. Touch pad On/Off.

125

Technical Information

6.3.2 Fault Code Summary

Fault Code

F1

CVA4070 / CVA4075 Coffee Systems

Fault Description

Shortcirc uit temperature sensor NTC coffee/hot water

F2

F3

F4

F10

F17

F41

F42

F43

F73

F80

F81

F82

F83

Open circuit temperature sensor NTC coffee/hot water

Shortcircuit temperature sensor NTC steam

Open circuit temperature sensor NTC steam

No water supply

Insufficient water supply

EEPROM faulty /wrong data

Frequency not registering

No communic ation between con trol electronic and power electronic

Brew unit fault

Flow-thru heater coffee/hot water not heating

Flow-thru heater steam not heating

Flow-thru heater coffee/hot water too h ot

Flow-thru heater steam too hot

Table 6-13: CVA4070 Fault Code Summary

126

CVA4070 / CVA4075 Coffee Systems

6.3.3 F1

Technical Information

Short circuit in the temperature sensor NTC coffee/hot water

• Check the connecting cables.

• Replace the connecting cables if necessary.

• T empe ratu re sensor Flow-thru heater coffee/hot water– Check,

0214.46.

• Check the t empe rature sensor.

6 .3.4 F2

O pen circuit temperature sensor NTC cof fee/hot water

• Check the connecting cables.

• Replace the connecting cables if necessary.

• Temperature sensor Flow-thru heater coffee/hot water– Check,

0214.46.

• Replace the temperature sensor if necessary.

6 .3.5 F3

Short circuit temperature sensor NTC steam

• Check the connecting cables.

• Replace the connecting cables if necessary.

• Temperature sensor Flow-thru heater steam.

• Replace the temperature sensor if necessary.

6.3.6 F4

Open circuit temperature sensor NTC steam

• C heck the connecting cables.

• Replace the connecting cables if necessary.

• Temperature sensor Flow-thru heater steam

• Replace the temperature senso r if necessary.

6.3.7 F10

Hoses broken, clogged, kinked.

• Check the hoses.

• R eplace the hoses if necessary.

127

Technical Information

Water tank valve jammed, clogged.

CVA4070 / CVA4075 Coffee Systems

• Check the water tank valve.

• Replace the water tank if necessary.

Flow meter defective.

• Flow meter – Remove

• Install a new flow meter.

Pump coffee/hot water defective.

• Coffee/hot water pump – Remove

• Ins tall a new pump coffee/hot water.

6.3.8 F1 – Insufficient W ater Supply

The water tank is not seated correctly .

• Push the water tank in correctly.

Hoses broken, clogged, kinked.

• Check the hoses.

• Replace the hoses as necess ary.

Water tank valve jammed, clogged.

• Check the water tank valve.

• Replace the water tank as necessary.

Flow meter defective.

• Flow meter – Remove,

• Install a new flow meter.

Pump coffee/hot water defective.

• Coffee/hot water pump – Remove

• Install a new pump coffee/hot water.

128

6.3.9

6

6

6

CVA4070 / CVA4075 Coffee Systems

.3.10

.3.11

.3.12

F41

Faulty EEPROM/Wrong data

• Control electronic EPX – Remove

• Install a new control electronic.

F42

Main power frequency not r egistered

• Verify correct source voltage & frequency.

Technical Information

F47

Faulty interface of control electronic and power electronic.

• Check the cable between control electronic and power electronic.

• Replace the connecting cable if necessary.

F73 – Faulty Brew Unit

When the brew unit is activated, if one of the two microswitches does not switch within approx.10seconds. F73 is registered.

1 Microswitch position controltop (home position)

2 Microswitch position control bottom (compress and drain position)

Figure 6-1: CVA4070 Faulty Brew Unit

Brew unit blocked.

• Disconnect the appliance from the main power supply.

• Remove any foreign matter.

• Clean the affected components

129

Technical Information

CVA4070 / CVA4075 Coffee Systems

Defective microswitch or no continuity in connectors.

• Check the connecting cables.

• Replace the connecting cables as necessary.

• Position control microswitch– Check

• Replace the microswitch if necessary.

Brew unit drive defective.

Note

W hen installing the brew unit, make sure that the pawl is set t o the home position, refer to Figure 6-1. Brew unit drive, home position.

• Install a new brew unit drive.

6.3.13 F80 Cause

Flow-thru heater coffee/hot water (2R1) does not heat.

• Flow-thru heater coffee/hot water – Check

• If necessary, Flow-thru heater coffee/hot water – Remove

• Install a new flow-thru heater coffee/hot water.

Temperature fuse has tripped.

• Replace the temperature fuse.

6.3.14 F81

Flow-thru heater steam does not heat.

• Flow-thru heater steam – Check

• If necessary, Flow-thru heater steam – Remove

• Install a new flow-thru heater steam.

Note

To be able to continue using the appliance for the prepa ration of coffee and hot water until service is performed, the customer can switch the steam system off, refer to Steam system – On/ off.

130

CVA4070 / CVA4075 Coffee Systems

Technical Information

• Replace the temperature fuse.

6.3.15 F82

The temperature is higher than 266°F(130 °C).

• If the temperature fuse has tripped it has to here placed.

6.3.16 F83

The temperature is higher than 356°F(180 °C).

• If the temperature fuse has tripped, it has to here placed.

Date: September 8,2006 LG.

131

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