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TECHNICAL INFORMATION

CM6 Countertop Coffee Systems

Summary of Contents for CM6 Series

Page 1: ...TECHNICAL INFORMATION CM6 Countertop Coffee Systems 2018 Miele USA ...

Page 2: ...Brew Unit Drive Compressing Position Brew Position 18 2 3 6 Brew Unit Drive Drain Position 19 2 4 Machine Response after Power Supply Failure 20 2 5 Drip Tray Sensing 20 2 5 1 Fill Level 20 2 5 2 Presence 20 3 Fault Repair 21 3 1 F1 Short Circuit in Heater NTC R30 14 21 3 2 F2 Open Circuit in Heater NTC R30 14 22 3 3 F10 No Water Flow 22 3 4 F17 Insufficient Water Flow 23 3 5 F28 Too Much Ground C...

Page 3: ...moval 48 4 12 Grinder Thermostat F3 3 Removal 51 4 13 EPL Power Electronic 1N1 1 2N1 1 Removal 51 4 14 Chute Present Switch S87 5 Removal 52 4 15 Pump M7 with Thermostat F3 2 Removal 52 4 16 Flow Meter B3 4 Removal 53 4 17 Water Tank Sensor B3 18 Removal 53 4 18 Drip Tray Present Switch S87 1 Removal 53 4 19 Ceramic Valve M29 Removal 54 4 20 Heater R1 Fuse 1F8 2F8 NTC R30 14 Removal 55 4 21 Removi...

Page 4: ...ay Control Electronic Cover Retainers 46 Figure 001 31 Display Control Electronic Wiring Harness 46 Figure 001 32 Grinder Cover and Power Electronic Screws 47 Figure 001 33 Grinder Cover Screw 47 Figure 001 34 Door Contact Switch 48 Figure 001 35 Beans Container Screws 49 Figure 001 36 Ground Coffee Chute Screws 49 Figure 001 37 Grinder Screws and Ground Coffee Chute Base Screw 50 Figure 001 38 Gr...

Page 5: ...3 Quantities until Obligatory Descaling 9 Table C 4 Technical Data 9 Table 001 1 Switch Cam Settings 17 Table 001 2 Drink Settings Customer Programming 33 Table 001 3 Machine Settings Customer Programming 36 Table 001 4 Service Programming 38 Table 001 5 Service Mode 41 Table 001 6 Brew Unit Position Switches 41 ...

Page 6: ...pliance Also empty the beans container lay the appliance on its right side and transfer any remaining beans to an appropriate container 2 Risk of Burning or Scalding Some components may be very hot such as heaters Also some components may contain pressurized steam Use caution when working on these parts To protect from burns 1 Allow the appliance to cool down for approximately one hour before star...

Page 7: ...he operating manual Fill the water tank with fresh cold tap water See the operating manual B Modification History When Who What 3 7 2018 Jessica Naples Tech service bulletin added 6 21 2017 Jessica Naples Model numbers updated 9 28 2016 Jessica Naples Minor changes throughout 6 25 2014 Jessica Naples Conversion for Website 5 14 2014 Sabine Hötte Version 4 1 15 2014 Sabine Hötte Version 3 12 4 2013...

Page 8: ...odifications Model CM 61x0 CM 63x0 Construction Countertop with bean system Design Display with DirectSensor Dimensions Height 14 1 Width 9 9 Depth 16 8 Features Individual language selection Yes Yes Time of day display No No Date display No No CupSensor No No Infinitely variable height adjustable serving spout 8 14 cm 8 14 cm Cup warmer No Yes BrilliantLight No Yes Signal tones No Yes ...

Page 9: ...the dispenser not in the cup Water hardness settings Water flow settings Quantities approx until display shows No until descaling 50 Steam minutes Coffee liters Soft Normal or half no effect 90 80 Medium 60 60 Hard 30 40 Very hard Normal 20 20 Half 10 10 Table C 3 Quantities until Obligatory Descaling Grinder M25 Voltage 120V Grinder thermostat 3F3 trips at 194 F 90 C Brew unit drive M26 Voltage 0...

Page 10: ...pout present switch S87 6 4 Grinder thermostat F3 3 90 C 13 Water tank sensor B3 18 5 Brew unit present switch S87 2 14 EPB display control electronic N1 2 6 Brew unit drive M26 with 15 Heater NTC R30 14 2 position switches S60 1 S60 2 and 16 Heater R1 grind amount step contact switch S51 4 17 Ceramic valve M29 with 7 Flow meter B3 4 position switch S60 3 and 8 On off switch S2 step contact switch...

Page 11: ...hermostat F3 3 90 C 14 EPB display control electronic N1 2 5 Brew unit present switch S87 2 15 Cup warmer R39 6 Brew unit drive M26 with 16 Heater NTC R30 14 2 position switches S60 1 S60 2 and 17 Heater R1 grind amount step contact switch S51 4 18 Ceramic valve M29 with 7 Flow meter B3 4 position switch S60 3 and 8 On off switch S2 step contact switch S51 1 9 Door contact switch S24 19 2 heater f...

Page 12: ...ical Interface Figure 001 1 Optical Interface Location The appliance has an optical interface for diagnostics and program updates It can be located with the Find optical interface function 2 2 Water Paths 2 2 1 Overview Figure 001 2 Water Path Overview 1 Pump M7 ...

Page 13: ... Steam hot milk Pos 6 Reference closed Pos 7 Coffee decompression rest Pos 8 Rinse air 7 Hot water spout 8 Grinder M25 9 Brew unit 10 Coffee milk spout 11 Milk container 12 Drip tray 2 2 2 Coffee Figure 001 3 Water Path for Coffee 1 Pump M7 2 Flow meter B3 4 3 Water tank 4 Drain valve 5 Heater R1 6 Ceramic valve M29 in pos 7 Coffee decompression rest 8 Grinder M25 9 Brew unit 10 Coffee milk spout ...

Page 14: ... M7 2 Flow meter B3 4 3 Water tank 5 Heater R1 6 Ceramic valve M29 in pos 3 Hot water steam air 7 Hot water spout 12 Drip tray 2 2 4 Hot Milk Figure 001 5 Hot Milk 1 Pump M7 2 Flow meter B3 4 3 Water tank 5 Heater R1 6 Ceramic valve M29 in pos 5 Steam hot milk 10 Coffee milk spout 11 Milk container 12 Drip tray ...

Page 15: ...p M7 2 Flow meter B3 4 3 Water tank 5 Heater R1 6 Ceramic valve M29 in pos 4 Steam air open milk froth 10 Coffee milk spout 11 Milk container 12 Drip tray 2 2 6 Rinse Figure 001 7 Rinse 1 Pump M7 2 Flow meter B3 4 3 Water tank 5 Heater R1 6 Ceramic valve M29 in pos 8 Rinse air ...

Page 16: ...the brew unit present monitoring microswitch is activated Figure 001 8 Pos 2 2 3 3 Electronic Grind Amount Compensation The grind amount compensation evens out variations in grinder settings and coffee types The grind amount can be set in the customer programming mode for the various coffee types and corresponds to a specific grind time see Table 001 2 During the brewing process the actuator on th...

Page 17: ...volume areas can be measured for the grind amount see Figure 001 10 They represent the selectable volume areas on the machine see Figure 001 11 Figure 001 10 Measurable Volume Areas Figure 001 11 Selectable Volume Areas If the measure quantity varies from the set quantity then the grinding time will be increased or decreased by approximately 0 2 seconds as appropriate during the next grinding cycl...

Page 18: ...tched Figure 001 12 The pawl is in the home position Figure 001 13 Figure 001 12 Home Position Rear View Figure 001 13 Home Position Front View 2 3 5 Brew Unit Drive Compressing Position Brew Position The drive moves until the second cam of the double cam element switches the bottom microswitch and the top microswitch is no longer switched Figure 001 14 The pawl presses down on the spring Figure 0...

Page 19: ...in Position After the coffee is brewed the drive moves back until the first cam of the double cam element activates the bottom microswitch and the top microswitch is switched Figure 001 16 The tension of the spring is released the drain valve is opened and the residual water runs into the drip tray before the coffee puck is dropped ...

Page 20: ...tomer remain unchanged 2 5 Drip Tray Sensing 2 5 1 Fill Level The amount of water flowing into the drip tray is registered by the flow meter When a certain amount is reached the Empty drip tray message will be displayed The value for the water amount is saved when the appliance is switched off emptying the drip tray after shutoff will not change this value See also Section 001 3 18 2 5 2 Presence ...

Page 21: ...cuit in Heater NTC R30 14 Symptom Electronic registering an NTC temperature 200 C or resistance approx 430Ω Cause NTC short circuited Remedy 1 Check the NTC wiring 2 Replace defective plugs and or wiring 3 Test the NTC in service mode see Section 001 4 4 Note NTC resistance values should be 100kΩ at 25 C 77 F 5 5kΩ at 100 C 212 F and 1kΩ at 160 C 320 F 4 Check the NTC resistance at different tempe...

Page 22: ... not provide a remedy Cause NTC open circuited Remedy 1 Check the NTC wiring 2 Test the NTC in service mode see Section 001 4 4 Note NTC resistance values should be 100kΩ at 25 C 77 F 5 5kΩ at 100 C 212 F and 1kΩ at 160 C 320 F 3 Check the NTC resistance at different temperatures and compare to the values given above 4 Replace NTC wiring if necessary 5 Replace the NTC if necessary see Section 001 ...

Page 23: ...ts should never be used when assembling and installing water system parts 2 Replace wiring or hoses as necessary Cause Water tank valve jammed or clogged Remedy 1 Check the water tank valve 2 Replace the water tank if necessary Cause Flow meter jammed or defective Remedy Replace the flow meter see Section 001 4 16 Cause Water pump defective Remedy Replace the water pump see Section 001 4 15 3 4 F1...

Page 24: ...Replace wiring or hoses if necessary Cause Water tank valve jammed or clogged Remedy 1 Check the water tank valve 2 Replace the water tank if necessary Cause Flow meter jammed or defective Remedy Replace the flow meter see Section 001 4 16 Cause Water pump defective Remedy Replace the water pump see Section 001 4 15 3 5 F28 Too Much Ground Coffee in Brew Unit Symptom When preparing beverages using...

Page 25: ...onic s computer was reset due to a power failure Remedy Switch the appliance off and back on 3 8 F41 EEPROM Faulty Data Fault Symptom Checksum at switch on or when switching on out of standby mode triggers a fault Cause Fault while saving data power failure during data storage EEPROM defective Remedy Install a new power electronic See Section 001 4 13 3 9 F42 Line Frequency Not Registered Symptom ...

Page 26: ...position switch S60 1 S60 2 defective or its wires short circuited Remedy 1 Check switch wiring 2 Replace wiring if necessary 3 Check the brew unit position switches in service mode see Section 001 4 4 4 Brew unit position switch electrically defective Replace the switch 5 Brew unit position switch mechanically defective drive cam worn away Replace the drive cam 6 If the drive cam is not accessibl...

Page 27: ... coarse Remedy 1 Remove the coffee grounds 2 Reduce the grind amount see Section 001 4 1 3 Adjust the grind level to a finer setting 3 13 F77 Ceramic Valve M29 Initialization Fault Symptom Ceramic valve step contact switch S51 1 not activated During initialization the reference contact is detected multiple times or not at all OR when approaching or passing over the reference position the reference...

Page 28: ...ce both fuses and the NTC since the NTC may also be damaged see Section 001 4 20 Cause Heater R1 defective Remedy 1 Check plugs and wires 2 Replace defective plugs and wires as necessary 3 Test the heater in service mode see Section 001 4 4 4 Replace the heater if necessary see Section 001 4 20 3 15 F82 Heater R1 Too Hot Symptom Heater temperature higher than 170 C for 120 s Cause Heater NTC R30 1...

Page 29: ...e was switched off The amount of water flowing into the drip tray is registered by the flow meter When a certain amount is reached the Empty drip tray message will be displayed The value for the water amount is saved when the appliance is switched off emptying the drip tray after shutoff will not change this value See also Section 001 2 5 Remedy Not a fault Cause Water that would otherwise run int...

Page 30: ...e milk pipework has not been cleaned sufficiently by the customer Remedy Advise the customer about the correct cleaning of the pipework in accordance with the operating instructions Cause Milk too warm Remedy Milk temperature should be lower than 13 C 55 F 3 22 No or Very Little Coffee Flowing from Spout Symptom If the pump is operated in service mode it operates normally and pumps water Cause Pum...

Page 31: ...ontact see Section 001 3 24 3 24 Coffee Grounds Next to the Brew Unit Symptom After approximately 5 coffee servings there is a large amount of coffee grounds next to the brew unit Cause The holder for the ground quantity step contact switch Figure 001 21 Item 1 has broken off The switch remains in the correct position but it moves during the brewing process See Section 001 2 3 3 Figure 001 21 Grin...

Page 32: ... the full pressure pump into the water tank receptacle 4 Activate the water pump in service mode see Section 001 4 4 and use it to push water through the system 4 Service 4 1 Drink Settings Customer Programming Initial requirements 1 Switch the appliance on 2 Let the appliance heat up Accessing Press the touchpad Acknowledgement indicator Parameters is displayed Options Note If a selection is not ...

Page 33: ...ilk milk froth or hot water Espresso coffee cappuccino Latte Macchiato long coffee Caffé Latte Level 1 4 6 s Level 3 Level 2 5 2 s Level 3 5 8 s Level 4 6 5 s Level 5 7 1 s Level 6 7 7 s Level 7 8 3 s Brew temperature N A for hot milk hot water or milk froth Espresso coffee cappuccino Latte Macchiato long coffee Caffé Latte Minimum Medium Low Medium High Maximum Pre brewing N A for hot water hot m...

Page 34: ... remains as selected even if standard settings are reset 1 Press the or touchpad until the desired function is marked 2 Press the OK touchpad 3 Press the or touchpad until the desired setting is marked 4 Factory settings are in bold Function Setting Language bahasa malaysia cestina dansk deutsch Deutschland Luxemburg Österreich Schweiz english Australia United Kingdom Hong Kong India Ireland Canad...

Page 35: ...mer is activated the appliance will switch on at the set time Switch off after the appliance will switch off after the set time has elapsed 00 30 h min Switch off at if the timer is activated the appliance will switch off at the set time Activate Switch on at Mark the desired setting and accept it The timer is activated Switch off at Accept Eco mode On Steam heater activated only occasionally Off ...

Page 36: ...evel 1 to 7 quieter to louder Level 4 Keypad tone Level 1 to 7 quieter to louder Level4 Cup heating CM 63x0 only On Off Showroom program On The demonstration mode has been activated The appliance can be operated but heating will not take place Off The demonstration mode is deactivated Heating will take place Factory default Do not reset All modifications made by the customer will not be reset to s...

Page 37: ...s the appliance will automatically go back one menu level 1 Press the or touchpad until the desired function is marked 2 Press the OK touchpad 3 Press the or touchpad until the desired setting is marked Function Options Description Reset Cancel Reset is not carried out Carry out a reset All modified settings will be reset to standard settings The language remains unchanged The showroom program rem...

Page 38: ... has been completed Back Press the touchpad Save and quit 1 Press OK The function is carried out or the setting is saved 2 Press the touchpad The appliance is switched off Quit without saving Press the touchpad The function is not carried out or the setting not saved The appliance is switched off 4 4 Service Mode Initial requirements Switch the appliance off Accessing Note Accessing must occur wit...

Page 39: ...lockwise Position 1 Not used Position 2 Ventilation hot water Position 3 Hot water steam air Position 4 Steam air open milk froth Position 5 Steam hot milk Position 6 Reference closed Position 7 Coffee decompression pause Position 8 Rinse air Brew unit M26 2 Initialize Brew unit moves through all of its positions and then back to the home position Continuously upward The brew unit is advanced to t...

Page 40: ...t locked S51 4 grind amount step contact switch 0 Activated 1 Not activated S87 5 chute present switch 0 Chute closed 1 Chute open S51 1 ceramic valve step contact switch 0 Activated 1 Not activated S60 3 ceramic valve position switch 0 Activated 1 Not activated S87 6 spout present switch 0 Not inserted 1 Inserted Total operating hours Total operating hours are displayed Operation Display The disp...

Page 41: ... 5 Only operate the heater briefly so that it does not get too hot and trip the fuse Switch state Brew unit position S60 1 top switch S60 2 bottom switch 0 Activated 1 Not activated Home see Section 001 2 3 4 1 Not activated 0 Activated Compressing see Section 001 2 3 5 0 Activated 0 Activated Drainage see Section 001 2 3 6 Table 001 6 Brew Unit Position Switches Back Press the touchpad Save and q...

Page 42: ...re 001 22 Top Cover Screw Water Tank Side Figure 001 23 Top Cover Screws Brew Unit Side 7 Using a lid opener press in on the six retainers Figure 001 24 Item 1 8 Lift up on the back of the top cover pull the cover back and take it off ...

Page 43: ...plug 4 6 Side Casing Removal 1 Remove the top cover see Section 001 4 5 2 Remove the 2 T10 screws securing the front of the casing Figure 001 25 Item 1 Figure 001 25 Front Casing Screws 3 Using an appropriate tool release and remove the screw cover at the rear underside of the appliance Figure 001 26 ...

Page 44: ...at Rear of Appliance 5 Press on the side panels and slide them back to release the locking tabs 6 Disconnect the hose from the water tank side panel 4 7 Cup Warmer R39 Removal CM 63x0 Only 1 Remove the top cover see Section 001 4 5 2 Remove the 4 T20 screws securing the cup warmer to the underside of the top cover Figure 001 28 Item 1 ...

Page 45: ...side of the front panel Figure 001 29 Item 1 Figure 001 29 Front Panel Screws 3 Lift the front panel up and disconnect the wiring harness from the display control electronic 4 Take off the front panel 4 9 EPB Display Control Electronic N1 2 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the front panel see Section 001 4 8 3 Release and remove the display control electronic cover Figur...

Page 46: ...ic wiring harness Figure 001 31 Item 1 Figure 001 31 Display Control Electronic Wiring Harness 4 10 Door Contact Switch S24 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Remove the foam insulation from around the grinder cover 4 Remove 3 T10 screws Figure 001 32 Items 1 and 2 ...

Page 47: ...rmation 47 CM6 Figure 001 32 Grinder Cover and Power Electronic Screws 5 Move the power electronic to one side 6 Remove the T10 screw behind the power electronic Figure 001 33 Item 1 Figure 001 33 Grinder Cover Screw ...

Page 48: ...itch 4 11 Grinder M25 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Remove the foam insulation from around the grinder cover 4 Remove 3 T10 screws Figure 001 32 Items 1 and 2 5 Move the power electronic to one side 6 Remove the T10 screw behind the power electronic Figure 001 33 Item 1 7 Pull the grinder cover forward Figure 001 34 Items A and B ...

Page 49: ...he chute present switch from the ground coffee chute shown at the top left in Figure 001 36 12 Remove the T10 screws securing the ground coffee chute Figure 001 36 Item 1 number of screws may vary by model Figure 001 36 Ground Coffee Chute Screws 13 Take off the ground coffee chute 14 Remove the 4 T10 screws Figure 001 37 Items 1 and 2 ...

Page 50: ... Coffee Chute Base Screw 15 Take out the grinder 16 Take out the ground coffee chute base 17 Take off the grinder insulation 18 Remove the thermostat from the grinder see Figure 001 38 Item 1 Figure 001 38 Grinder Thermostat 19 Disconnect the two wires from the grinder ...

Page 51: ...1N1 1 2N1 1 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Remove the T10 screw securing the power electronic assembly Figure 001 40 Item 1 4 Take out the power electronic assembly Note To avoid connection errors disconnect wiring harnesses from the old power electronic and connect them to the new power electronic one at a time 5 Disconnect wiring...

Page 52: ...see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Take out the chute present switch Figure 001 41 Item 1 and disconnect it from the power electronic Figure 001 41 Chute Present Switch 4 15 Pump M7 with Thermostat F3 2 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 ...

Page 53: ...16 Flow Meter B3 4 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Disconnect the wiring harness and the hose from the flow meter 4 Pull the flow meter up and off of its base Warning When re installing In order to avoid possible water system faults e g clogging or blocking of valves grease oil or other slip lubricants should never be used when asse...

Page 54: ... Ceramic Valve M29 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Disconnect the ceramic valve from the power electronic 4 Release any wires from the clips at the base of the valve assembly 5 Remove the T10 screw securing the base of the valve assembly arrow Figure 001 44 slide the valve assembly out 6 Disconnect the five water lines from the valv...

Page 55: ...er of the heater assembly See Figure 001 45 Item 1 5 Take out the heater assembly 6 Disconnect the two water lines spring clips from the heater assembly 7 Disconnect the two electrical connections needlenose pliers from the heater assembly 8 Remove the T20 screw securing the fuses and the green yellow ground wire to the heater housing See Figure 001 45 Item 2 9 Release the green yellow ground wire...

Page 56: ...bricants should never be used when assembling and installing water system parts 4 21 Removing the Brew Unit Drive M26 and Brew Unit Switches 1 Remove the top cover see Section 001 4 5 2 Remove the side casing see Section 001 4 6 3 Take out the brew unit if it wasn t previously removed 4 From the brew unit side remove the five T10 screws securing the brew unit drive See Figure 001 46 Item 1 1 2 ...

Page 57: ...securing the pump flow meter mounting bracket Figure 001 47 Item 1 Slide the mounting bracket forward to release it Figure 001 47 Pump Flow Meter Mounting Bracket Screw 6 Remove the T10 screw securing the water tank sensor drip tray present switch mounting bracket assembly Figure 001 48 Item 1 and release this assembly ...

Page 58: ...Technical Information 58 CM6 Figure 001 48 Water Tank Sensor Drip Tray Present Switch Mounting Bracket Screw 7 Release the brew unit drive cover Figure 001 49 Figure 001 49 Brew Unit Drive Cover ...

Page 59: ...s from the brew unit drive 4 22 Brew Unit Present Switch S87 2 Removal See Section 001 4 21 4 23 Grind Amount Step Contact Switch S51 4 Removal See Section 001 4 21 4 24 Dispenser Assembly Spout Present Switch S87 6 Removal 1 Remove the top cover see Section 001 4 5 2 Remove the front panel see Section 001 4 8 3 Remove the two T10 screws securing the top of the dispenser assembly to the inside of ...

Page 60: ... and release the spout present switch Figure 001 52 Item 2 from the dispenser assembly 8 Remove the two T10 screws securing the dispenser assembly to the dispenser housing Figure 001 52 Item 3 and separate the assembly from the housing Figure 001 52 Dispenser Assembly Hoses and Screws Spout Present Switch 2 1 3 ...

Page 61: ...move the two T10 screws securing the front trim piece listed as front facing in ETD see circles Figure 001 53 Take off this trim piece Figure 001 53 Front Trim Piece Screws 4 Pull the chrome sleeve off of the hot water spout Figure 001 54 Item 1 5 Disconnect the hose from the spout spring clip Figure 001 54 Item 2 6 Remove the T10 screw securing the hot water spout mounting bracket Figure 001 54 I...

Page 62: ...Technical Information 62 CM6 Figure 001 54 Hot Water Spout Removal 2 1 3 ...

Page 63: ... from week starting Jan 09 2017 If the fault has already occurred you must update the software using the MDU and replace the entire flow thru heater assembly as illustrated below Parts required Quantity Mat no Designation 1 10746470 Continuous flow heater sub assembly 1 4kW 120V As damage to constituent parts cannot be ruled out the complete flow through heater sub assembly should be replaced Part...

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Miele CM6 Series, Technical Information

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