Miele CVA 4075 Manual

Technical Information
CVA4070 / CVA4075 Coffee Systems
TECHNICAL INFORMATION
CVA4070 / CVA4075 Coffee System
©2007 Miele USA
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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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Technical Information
CVA4070 / CVA4075 Coffee Systems
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
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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 ....................................................................................................... 128
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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Technical Information
CVA4070 / CVA4075 Coffee Systems
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
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Technical Information
CVA4070 / CVA4075 Coffee Systems
CVA4070 / CVA4075 - List of Figures (continued)
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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Technical Information
CVA4070 / CVA4075 Coffee Systems
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
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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 may be hot. Pressurized steam may be 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.
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Technical Information
CVA4070 / CVA4075 Coffee Systems
Touch current measurement
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!
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Technical Information
CVA4070 / CVA4075 Coffee Systems
1.0 Construction and Design
1.1 Appliance Overview
1.1.1 Front View
Figure 1-1: CVA4070 - Front Overview
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Technical Information
CVA4070 / CVA4075 Coffee Systems
1.1.2 Interior (Front of Appliance Opened)
Figure 1-2: CVA4070 - Inside Overview
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Technical Information
CVA4070 / CVA4075 Coffee Systems
1.2 Technical Data
▪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 CVA4070, CVA4075
Weight *1 kg 27.5
Ease of operating
Intelligent dialog control with large
standard text
display
X
Languages available 17
Sensor pad controls X
Electronic control with step-by-step user
guide X
Function
Portion sizes 2(espresso and
coffee)
Brew two cups at the same time X
Select amount of coffee per cup g 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 X
Brew a different type of coffee using
ground coffee X
Program individual coffee user profiles max. 10
Set the start and end times X
Automatic rinsing and cleaning program X
Set water hardness X
Table 1-1: Technical Data (Continued on Table 1-2)
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Technical Information
CVA4070 / CVA4075 Coffee Systems
Model CVA4070, CVA4075
Equipment
Water tank Liters 2.5
Removable coffee
bean container g 500
Waste container Portions approx. 25
Capacity
Drip tray with spill
guard grid for
secure transport
1 1.8
Height adjustable coffee spouts,
adjustable to cup height cm 5.5 – 9.5
Hot water jet X
Flowstable magnetic piston pump 2
Aluminum flow-thru heater 2
Brew unit – removable and easy to clean X
Additional socket to connect the coffee
maker and the dish warming drawer X
Indicators
Prompts for coffee bean and fresh
water refill X
Prompts to empty the waste container
and the drip tray X
Indicator for the descale program X
Electrical connection
Voltage VAC 115– 120
Frequency Hz 60
Connected load kW 1.2
Fuses A 12
Breaker cable length ft 9
Safety
Set system lock X
Table 1-2: Technical Data (Cont. from Table 1-1, Cont. on Table 1-3)
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Technical Information
CVA4070 / CVA4075 Coffee Systems
Model CVA4070,CVA4075
Accessories supplied X
Kettle-type socket X
Milk container and
attachment for preparing
cappucino
X
Descaling and cleaning
agents X
Spoon for ground coffee 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.
X
Mobile built-in cabinets MES 45 and
MES 60 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.
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Technical Information
CVA4070 / CVA4075 Coffee Systems
1.2.1 Electrical Information
Model Number Electrical
Requirements Plug Style
CVA4070 120 VAC 15amp NEMA 5-15
Table 1-4: CVA4070 Electrical
1.2.2 Plumbing Information
None – not applicable
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Technical Information
CVA4070 / CVA4075 Coffee Systems
1.3 Layout of Components
1 Reed contact– ground coffee funnel 17 Flow meter
2 Power electronic EPL 18 Steam pump with temperature limiter
3 Light barrier – coffee bean container 19 Coffee/hot water pump with temperature limiter
4 Grinder 20 Solenoid – steam
5 Reed contact– door 21 Interior lamp
6 Light barrier – coffee bean container 22 Temperature sensor– flow-thru heater coffee/hot water
7 Interior lamp 23 Flow-thru heater coffee/hot water
8 Control electronic EPX 24 Temperature limiter– flow-thru heater coffee/hot water
9 Main power switch 25 Flow-thru heater steam
10 Microswitch grinding amount compensation 26 Temperature sensor– flow-thru heater steam
11 Door lamp 27 Temperature limiter– flow-thru heater steam
12 Door lamp 28 Temperature fuse (one for each flow-thru heater)
13 Brew unit drive 29 Interference suppressor
14 Contact spring drip tray(3 springs) 30 Not Used
15 Solenoid – hot water 31 Socket for main power
16 Reed contact– waste container
Figure 1-3: CVA4070 Layout Components
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Technical Information
CVA4070 / CVA4075 Coffee Systems
2.0 Installation
2.1 Product Dimensions
Figure 2-1: CVA4070 - Plumbing
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Technical Information
CVA4070 / CVA4075 Coffee Systems
2.2 Installation Procedure
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).
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Technical Information
CVA4070 / CVA4075 Coffee Systems
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
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Technical Information
CVA4070 / CVA4075 Coffee Systems
3.0 Commission and Operation
3.1 General Operation
3.1.1 Touch Controls
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
options.
"Clear": to go back to the previous screen
"Stop": to cancel coffee preparation
"OK": 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