Miele CVA 615 Technical Information Download Page 38

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Technical Information

CVA615 Coffee System

4.15

Brew Unit Drives

Refer to figure 4-17.

When the brew unit is placed in the appliance, it locks into position.
The locking mechanism switch lug (Item 3) activates the brew unit
present switch (Item 4). The drive shaft, (Item 6) engages with the
drive shaft socket,

Figure 4-17:

Components of the Brew Unit Drive Assembly, Water

Connection and Present Switch.

1 Brew unit drive shaft socket
2 Socket
3 Locking mechanism switch lug
4 Switch – Brew unit present switch
5 Nozzle – Coffee heater
6 Drive shaft

Summary of Contents for CVA 615

Page 1: ... 2004 Miele TECHNICAL INFORMATION CVA615 Coffee System ...

Page 2: ......

Page 3: ... 3 1 5 Adjusting the Coffee Grinder 12 3 1 6 Filling the Coffee Bean Container 13 3 1 7 Filling the Water Tank 14 4 0 DESCRIPTION of FUNCTION 4 1 Door Switch 15 4 2 Overflow reed Switch 15 4 3 Brew Unit Cleaning and Care 16 4 4 Removing the Brew Unit from the Appliance 16 4 5 Connection of Brew Unit to Drive Mechanism 17 4 6 Brewing Procedure 17 4 7 Ground Container 20 4 8 Waste Unit Present Switc...

Page 4: ...al 45 5 7 Drip Tray Removal 46 5 8 Overflow Switch Actuator Float Removal 47 5 9 Overflow Switch Removal 48 5 10 Rear Door Panel Removal 49 5 11 Fascia Panel Cover Removal 50 5 12 Selector Switch Removal 51 5 13 Display Module Electronic Removal 52 5 14 Coffee Dispensing Nozzle Removal 53 5 15 Coffee Dispensing Nozzle Installation 54 5 16 Steam Valve and Steam Valve Switch Removal 55 5 17 Hot Wate...

Page 5: ...7 5 35 Lower Section of Tank Valve Removal 78 5 36 Beans Container Removal 80 5 37 Beans Container Guide Removal 81 5 38 Grinder Disassembly 82 5 39 Grinder Assembly Basic Setting 85 5 40 Grinder Unit Removal 86 5 41 Dispensing Solenoid Removal 88 5 42 Dispenser Switch Removal 88 5 43 Waterpath Flowmeter Testing 89 5 44 Water Path Leakage Test 91 5 45 Water Path Connections Opening 92 5 46 Water P...

Page 6: ...ter Button 11 3 8 Grinder Controls 12 3 9 Adding coffee beans 13 4 1 Door Switch 15 4 2 Brew Unit in home position 16 4 3 Brew Unit connections 17 4 4 Brew Unit Filters 18 4 5 Brew Unit Components 18 4 6 Brew Unit with compressed coffee 19 4 7 Waste Unit Present Switch 20 4 8 Waste Unit and magnet 21 4 9 Water Tank and valve 22 4 10 Water Level Switch 23 4 11 Water Level Switch Float 23 4 12 Grind...

Page 7: ...50 5 12 Selector Switch 51 5 13 Rear of Front Door without cover 52 5 14 Coffee Dispensing Nozzle Components 53 5 15 Steam Valve and Switch and Components 55 5 16 Hot Water Valve Components 56 5 17 Brew Unit Connection Socket 60 5 18 Brew Unit Connection Socket Photo 60 5 19 Brew Unit Removal for Cleaning 61 5 20 Brew Unit Installation 62 5 21 Cleaning tablet being placed into Brew Unit 63 5 22 Br...

Page 8: ...38 Removal of the lip seal 77 5 39 Removing the lip seal 2 77 5 40 Water Tank Lip Seal 78 5 41 Underside view of CVA615 79 5 42 Removing the Beans Container 80 5 43 Beans Container Guide 81 5 44 Grinder Adjustment Level 82 5 45 Grinder Adjustment Components 83 5 46 Grinder 84 5 47 Grinder Removal 86 5 48 Grinder Coupling 87 5 49 Test Jumper Position 90 5 50 Service Mode Display 90 5 51 Water Path ...

Page 9: ...Technical Information 1 CVA615 Coffee System 1 0 Construction and Design 1 1 Appliance Overview 1 1 1 Front View Figure 1 1 Front Overview CVA615 1 1 2 Controls Figure 1 2 CVA615 Controls ...

Page 10: ...Technical Information 2 CVA615 Coffee System 1 1 3 Interior Front of Appliance Opened Figure 1 3 Interior view of CVA615 with door opened ...

Page 11: ...ystem 1 2 Technical Data Product Dimensions Figure 1 4 CVA615 product dimensions Electrical Information The appliance comes equipped with a 6 ft 1 8 m power cord with a NEMA 5 15P molded plug for connection to a 120 V 15 A 60 Hz power supply ...

Page 12: ...Technical Information 4 CVA615 Coffee System ...

Page 13: ...Technical Information 5 CVA615 Coffee System 1 3 Layout of Components Figure 1 5 CVA615 Overhead view of components ...

Page 14: ...Technical Information 6 CVA615 Coffee System ...

Page 15: ...Technical Information 7 CVA615 Coffee System 2 0 Installation Refer to the Installation section of the Operating Manual Figure 2 1 Operating Manual ...

Page 16: ...Technical Information 8 CVA615 Coffee System ...

Page 17: ...lace a cup under both coffee dispensing ports Figure 3 1 Cup under the dispensing ports 2 Press the desired size coffee button once This will start the preparation cycle Figure 3 2 Pressing the Coffee Button The following message will appear in the message window depending on the button pressed Figure 3 3 Displayed message ...

Page 18: ... preparation immediately Figure 3 4 Canceling the preparation process 3 1 3 Steam Control Caution The steam from the appliance is extremely hot use caution to prevent burns Turn the steam ON by turning the Steam Selector counter clockwise Turn the steam OFF by turning the Steam Selector clockwise Figure 3 5 Steam Selector ...

Page 19: ...e hot water dispenser 2 Press the hot water button Hot water will be dispensed 3 Press the hot water button again to stop the flow of hot water Figure 3 7 Hot Water Button Note If programmed with the hot water feature activated The flow of hot water will stop automatically once a predetermined amount of hot water has passed through the system ...

Page 20: ...the espresso only trickles into the cup the beans may have been ground too fine and the coffee will be bitter The grinder should be adjusted to a coarser setting If the crema is evenly colored but pale the ground coffee is too coarse If the crema is very dark brown on one side graduating almost to white on the other the ground coffee is too fine Note You should be able to feel notches when moving ...

Page 21: ...op 5 Close the lid and push the container back into place 6 Shut the appliance door Figure 3 9 Adding coffee beans Important Only put whole espresso or coffee beans in the container Anything else including ground coffee hot cocoa instant coffee or treated coffee beans flavorings caramel or sugar will damage the grinder Note Do not remove the coffee bean container from the appliance unless it is co...

Page 22: ...the unit is first turned on 1 Open the front of the machine 2 Lift the water tank up and out of the appliance 3 Open the lid and fill the container with cold drinking water to within about 1 2 cm of the top Important Never add hot water or any other liquid except cold water to the water tank 4 Close the lid and place the tank in the machine pushing it straight back 5 Close the front of the applian...

Page 23: ...loat with magnet is located in the drip tray Should a leak develop water flows into the drip tray The float with magnet then rises and activates the overflow reed switch which in turn causes the electronic control to switch the unit off Note When the Service Mode is accessed the top line of the display shows the switches that are activated An A will be displayed if the Overflow Switch is actuated ...

Page 24: ...Unit may become clogged To ensure correct operation of the Brew Unit it is essential to clean it regularly and apply silicone grease to the moving parts Refer to section 4 Maintenance for further information and procedures 4 4 Brew Unit Removal from the Appliance The brew unit must be in the home position see figure 4 2 before it can be removed from the appliance Fig 4 2 Brew unit in home position...

Page 25: ...Nozzle Item 5 supplies the Brew Unit with hot water under pressure When the Brew Unit is in the brewing position the socket Item 2 allows hot water to pass through the coffee 4 6 Brewing Procedure 1 The grinder fills the dispenser housing until full as determined by the dispenser switch 2 The grinder is then switched off 3 The dispenser flap opens twice two clicks via the dispenser solenoid assemb...

Page 26: ...tween the Top Filter Item 2 and Bottom Filter Item 5 6 Water then flows through the Water Nozzle Socket Item 4 The pump forces the hot water through the Brew Unit and the compressed grounds Pos 3 Coffee exits the top of Brew Unit via the Outlet Item 1 Figure 4 5 Brew unit components 1 Funnel 2 Percolator chamber 3 Bottom filter 1 Outlet 2 Top Filter 3 Compressed coffee 4 Water Nozzle Socket 5 Bott...

Page 27: ...rive begin to move back toward the starting home position the coffee chamber moves upward and releases the used compressed coffee grounds puck Pos 1 8 The drive continues and returns the brew unit to its starting home position Figure 4 6 Brew Unit showing compressed coffee puck ...

Page 28: ...essed puck falls into the waste container The electronic monitors the number of the compressed pucks After a specific amount is reached the message Empty waste unit is displayed 4 8 Waste Unit Present Switch A reed switch is mounted to the bottom of the housing as shown in the figure 4 7 Figure 4 7 Waste Unit Present Switch ...

Page 29: ...agnet for Present Switch Actuation When the appliance is placed into the Service Mode the top line of the display shows the switches that have been activated A 5 is displayed when the Waste Unit is installed and the switch is actuated For further information refer to section 6 Service Mode Note On newer Waste Units an additional magnet has been installed that assist in keeping the waste unit attac...

Page 30: ...ng of the coffee hot water and steam When the Water Tank is installed the sealing ring is pressed upwards allowing water to flow out Figure 4 9 Water Tank 1 Valve Assembly When the tank is removed from the unit the spring closes the sealing ring to ensure water cannot flow from the tank when it is out of the appliance for filling etc ...

Page 31: ...itch The Water Level Switch is located within the housing as shown in figure 4 10 Item 1 Figure 4 10 Water Level Switch The actuating magnet for the Water Level Switch is located in the Water Tank as shown below Figure 4 11 Item 1 Figure 4 11 Water Level Switch Float ...

Page 32: ...gh the water pump is registered via the flowmeter and recorded by the electronic unit as up to 27 ounces of water is still available After the 27 ounces is calculated as being used the display shows Fill water tank To prevent the water pump from running dry about 3 7 ounces of water remains in the tank If the appliance is placed into the service mode the top line of the display shows the switches ...

Page 33: ... fitted to the adjustment ring The smaller the gap the finer the coffee grind Warning To avoid damage to the grinder the grinder should only be adjusted in small steps Figure 4 12 Grinder Assembly 1 Seal 2 Bracket 3 Lock Ring 4 Ring 5 Ball 3 2mm 6 Spring 7 Cover 8 Motor Bracket 9 Vibration Dampener 3 10 Reinforcement Ring 11 Felt Ring 12 Cover 13 Worm Gear 14 Cone 15 Mounting 16 Ball 3 5mm 17 Carr...

Page 34: ... motor and the grinder Figure 4 13 Components of the Grinder Overload Protection Refer to figure 4 13 The Grinder Motor Item 1 drives the mounting Item 3 via the carriers Item 2 The rotary force is then transferred via the balls Item 5 to the grinder cone Item 6 1 Grinder motor 2 Carrier 3 Mounting 4 Spring 5 Ball 6 Grinding cone 7 Washer 8 Intake worm gear ...

Page 35: ...essed into the mounting as shown below in figure C The drive force is interrupted and the worm gear continues to operate via the mounting A Normal operation B Overload protection activated C Force transfer interrupted Figure 4 14 Ball Positions into the grinder cone under different operating conditions ...

Page 36: ...flap 10 Wiper 4 13 Ground Coffee Dispensing Figure 4 15 Coffee Dispensing Components By adjusting the dispenser lever figure 4 15 Item 1 the position of the switch slide in the dispenser container is modified This changes the volume of the dispenser container and hence the quantity of ground coffee that it can hold before it is full Each slider setting alters the coffee quantity by approx 0 5 gram...

Page 37: ...rops from the dispenser container into the brew unit If the dispenser container is not filled because there are no coffee beans in the bean holder the dispenser switch is not activated The display then shows Fill coffee beans 4 14 Dispenser Switch The service mode can be used to check whether the dispenser switch is activated With the appliance in the service mode the top line of the display shows...

Page 38: ...ng mechanism switch lug Item 3 activates the brew unit present switch Item 4 The drive shaft Item 6 engages with the drive shaft socket Figure 4 17 Components of the Brew Unit Drive Assembly Water Connection and Present Switch 1 Brew unit drive shaft socket 2 Socket 3 Locking mechanism switch lug 4 Switch Brew unit present switch 5 Nozzle Coffee heater 6 Drive shaft ...

Page 39: ...The drive shaft cog gear 5 has two switch actuators for the brew position switch 6 and the home position switch 7 Both switches are monitored by the electronic to determine the position of the brew unit 1 Drive Motor 2 Brew Unit Present Switch 3 Worm Gear 4 Step Down Gear 5 Drive Shaft Cog Gear 6 Brew Position Switch 7 Home Start Position Switch Figure 4 18 Brew Unit Drive Assembly ...

Page 40: ... the pump should a high temperature develop 4 17 Flow Meter All water taken from the water container flows through the flow meter The flow meter passes signals to the electronic unit proportional to the quantity of water passing through it The electronic unit then establishes the quantity of water that has flowed and stores the figure Approx 300 pulses from the flow meter indicate a flow of 3 ounc...

Page 41: ...w Through Heater has a Positive Thermal Coefficient PTC Temperature Sensor that provides a signal to the electronic unit for temperature control In addition a Thermostat is connected in series with the heater element Should the temperature become too high the Thermostat interrupts the power to the heater element Figure 4 19 Hot Water Coffee Heater 1 Heater Element 2 Water Valve 3 Temperature Senso...

Page 42: ...20 Item 3 In the event the temperature became too high due to a fault this fuse blows and cuts the power being supplied to the heater element Should this fuse blow the cause must be located and resolved before the fuse is replaced Figure 4 20 Steam Heater 1 Heater Element 2 Thermal Fuse 3 Thermostat 4 Temperature Sensor PTC ...

Page 43: ... Water tank 2 Sealing ring 3 Water filter 4 Flow meter 5 Pump 6 Valve Safety 7 Drain hose Excess pressure 8 Coffee Hot Water Heater Coffee 9 Water Valve to brew unit 10 Valve Steam solenoid valve 11 Valve Hot water solenoid valve 12 Steam Heater 13 Valve Steam in door 14 Frothing nozzle ...

Page 44: ...gh the Coffee Flow Through Heater The water is then passed through the Water Valve into the Brew Unit 4 20 3 Water Path Hot water The Pump moves water under pressure through the Flowmeter and through the Coffee Flow Through Heater The water is then passed via the Hot Water Valve to the Hot Water Outlet 4 20 4 Water Path Steam The pump moves water under pressure via the Flowmeter and through the Co...

Page 45: ...ter is supplied to the Brew Unit This connection must be air water tight to prevent air from entering the water path and or leakage from the occurring Figure 4 22 Water Valve disassembled The two o rings that form the seal to the brew unit can be accessed from the front inside area of the appliance once the brew unit removed To access the upper seal the heater must be removed from the appliance Th...

Page 46: ...Technical Information 38 CVA615 Coffee System 4 22 Electronic Assemblies 4 22 1 Power Electronic Figure 4 23 Power Electronic Board ...

Page 47: ...Technical Information 39 CVA615 Coffee System 4 22 2 CPU Electronic Figure 4 24 CPU Control Electronic ...

Page 48: ...Technical Information 40 CVA615 Coffee System ...

Page 49: ...aintenance Danger To avoid the risk of electrical shock the appliance should be disconnected from the power source before any service procedures are performed 5 1 Lid Removal 1 Remove the Lid Screws as shown in Figure 5 1 2 Remove the Lid Figure 5 1 Lid with screws ...

Page 50: ...emove the Filter 4 Disconnect the Mains Filter electrical connections Figure 5 2 Interference Suppression Filter Z1 Mounting Location 5 3 Rear Panel Removal 1 Remove the lid 5 1 2 Remove the Mains Filter 5 2 3 Remove the fixing screws from the rear panel 4 Disconnect the ground connection from the rear panel 5 Remove the Rear Panel upwards Figure 5 3 Rear Panel Removal ...

Page 51: ...em 5 4 Adjustment Slide Switch Frame Removal 1 Open the door 2 Pull off the slide switch knobs 3 Press the retaining lugs inwards with a small screwdriver Figure 5 4 4 Remove the frame Figure 5 4 Removing the Adjustment Slide Switch Frame Bezel ...

Page 52: ...Removal Refer to figure 5 5 1 Remove the Lid 5 1 2 Open the door 3 Disconnect the Door Switch Connections 4 Press the switch retaining lugs inwards with a small screwdriver 5 Remove the Door Switch to the front Figure 5 5 Door Switch shown with appliance door in open position ...

Page 53: ... Check if water is present in the Drip Tray with a finger through the opening under the water container 6 If water is present remove it using a suitable device 7 Remove the Brew Unit 8 Remove the Coffee Beans from their container 9 Remove the Base Plate Fixing Screws 10 Tilt the appliance onto its rear 11 Remove the Base Plate and disconnect the ground wire Figure 5 6 Base Plate Removal ...

Page 54: ...hnical Information 46 CVA615 Coffee System 5 7 Drip Tray Removal 1 Remove the Lid Mains and Rear Panel 5 1 to 5 3 2 Remove the Base Plate 5 6 3 Remove the Drip Tray Figure 5 7 Figure 5 7 Drip Tray removal ...

Page 55: ... Actuator Float Removal 1 Remove the Lid Mains and Rear Panel 5 1 to 5 3 2 Remove the Base Plate 5 6 Note Ensure the float in re installed in the same direction as when it was removed 3 Remove the Float Figure 5 8 1 Overflow Switch Float 2 Magnet inside of the float ...

Page 56: ... 5 9 Overflow Switch B8 3 Removal 1 Remove the Lid Mains and Rear Panel 5 1 to 5 3 2 Remove the Overflow Switch Fixing Screw 1 3 Remove the Overflow Switch 4 Disconnect the Overflow Switch connections from the Electronic Figure 5 9 Overflow Switch ...

Page 57: ...on 49 CVA615 Coffee System 5 10 Rear Door Panel Removal Refer to figure 5 10 1 Open the door 2 Remove the Upper Rear Panel Fixing Screws 1 3 Remove the Lower Rear Panel Fixing Screws 2 Figure 5 10 Rear Door Panel Removal ...

Page 58: ... 5 11 Fascia Panel Cover Removal 1 Open the door 2 Remove the Rear Door Panel 5 10 3 Remove the Cover Fixing Screws 3 4 Remove the cover Figure 5 11 Fascia Panel Cover Assembly 1 Fascia 2 Cable guide 3 Fixing screws 4 Cover 5 Magnet 6 Cable guide ...

Page 59: ...e the Rear Door Panel and Fascia Panel Cover 5 10 5 11 3 Unplug the electrical connection from the Selector Switch 4 Remove the Switch Knob 9 5 Remove the Selector Switch with its housing from the Fascia 6 Remove the Selector Switch Fixing Screws 7 Remove the Selector Switch from its Housing Figure 5 12 Selector Switch ...

Page 60: ...sconnect the Connections from the Electronic 7 5 Remove the Electronic Unit Fixing Screws 6 6 Remove the Electronic Unit 7 Remove the Display Module Fixing Screws 3 Figure 5 13 Rear View of Front Door with Rear Panel Removed 1 Pushbuttons 2 Display module 3 Display module fixing screws 4 Display module and electronic unit connection 5 Control and power modules connection 6 Electronic unit fixing s...

Page 61: ... 3 Remove the fixing screws from the white panel under and behind the nozzle 4 Remove the white panel Note The two screws for the moveable coffee dispensing nozzle are on the rear of the dispenser unit 5 Remove the 2 screws from the Coffee Dispensing Nozzle by hand 6 Pull out the hose 6 from the outlet 7 7 Pull out the moveable coffee dispensing nozzle 9 to its end stop 8 Unclip the outlet and rem...

Page 62: ...to the connection hose 6 2 Position the moveable coffee dispensing nozzle 9 in the cover 10 3 Clip the outlet 7 in the cover 10 Note The two screws for the coffee dispensing nozzle should be tightened by hand only as they can easily be over tightened 4 Fit the Coffee Dispensing Nozzle in the frame 5 Install the white panel and screws ...

Page 63: ...Knob 8 4 Remove the holder fixing screws 3 5 Remove the holder 6 Remove the Steam Valve Switch screws 10 7 Remove the Steam Valve Switch 8 Disconnect the electrical connections Figure 5 15 Components of Steam Valve and Steam Valve Switch 1 Switch Steam generator S79 2 Underlay 3 Screws Holder 4 Screws Valve housing 5 Holder 6 Valve housing Steam 7 Valve insert Steam 8 Switch knob 9 Switch feeler 1...

Page 64: ...tor 6 6 Pull out the Hot Water Nozzle 3 from the connector Figure 5 16 Hot Water Valve Components 5 18 Hot Water Valve Y12 Removal Refer to figure 5 16 1 Open the door 2 Remove the Rear Door Panel and Fascia Panel Cover 5 10 5 11 3 Disconnect the electrical connection 7 4 Loosen the Hot Water Valve Nuts 5 Pull out the Hot Water Valve from the connector 6 1 Sleeve 2 Nut 3 Hot water nozzle 4 Fixing ...

Page 65: ...et the Medium Coffee temperature to medium standard setting 4 Turn off the appliance 5 Press and hold the Small Coffee Button Large Coffee Button and the Hot Water Button Turn the Selector Switch to the On with light position The following is displayed LANGUAGE RINSING 6 Press the Medium Coffee Button 12 times The following is displayed DIAGNOSIS LANGUAGE 7 Press the Small Coffee Button 1 time 8 P...

Page 66: ...or Medium Coffee will change the displayed value by 1 i e 347 348 349 350 12 Press the Small Coffee Button 1 time to store the value 13 Turn the selector switch to the Off position 14 Turn the selector switch to the On or On with Light position 15 Prepare 4 coffees medium size one after the other 16 When the fourth coffee is being dispensed hold the sensor probe directly in the flow of coffee The ...

Page 67: ...ll cannot be easily removed perform the following Refer to figures 5 17 and 5 18 on the next page 1 Open front door Remove the Waste Container 2 Locate the Philips screw Figure 5 17 Item 2 3 Remove the Philips screw 4 Use a small flat tip screwdriver to left up on the locking tab Figure 5 18 5 Grasp the brew unit handle and pull the brew unit out till the connection socket on the brew unit Figure ...

Page 68: ...Technical Information 60 CVA615 Coffee System Figure 5 17 Brew Unit 1 Connection Socket 2 Retaining Screw Figure 5 18 Brew Unit Connection Socket Retaining Screw and Locking Tab ...

Page 69: ...brew unit 5 23 Brew Unit Cleaning Procedure Note Clean the Brew Unit by hand only it SHOULD NOT be cleaned in a dishwasher Lubricate the Brew Unit with silicon every 500 cups 1 Remove the Waste Container Note The Brew Unit can only be removed after the Waste Container has been removed from the appliance 2 Grasp the brew unit by the handle and press with the thumb on PRESS Figure 5 19 Item 1 Figure...

Page 70: ...t with a sponge 3 The filters can be removed for thorough cleaning 4 Fit a 5mm allen wrench to the connection point in the brew unit Turn counterclockwise while supporting the chrome filter from below Remove the filter by lifting it from the brew unit 5 Access the second filter by placing a long shaft Philips Screwdriver through the center of the funnel and remove the screw in the center of the fi...

Page 71: ...purchased from Miele 1 Remove the Waste Container 2 Remove the Brew Unit and put the detergent tablet in the brew unit funnel Figure 5 21 Cleaning tablet being placed into the brew unit funnel 3 Return the brew unit and waste unit to the appliance and close the door 4 Set a 25 oz container under the coffee dispensers 5 Press the rinse pre warm button The unit must be pre heated and ready to use ot...

Page 72: ...water will flow out the coffee dispensers After a pause more water will flow out This process will run 4 times dispensing 2 cups 17 oz of hot water The whole process lasts about 5 minutes At the end of the cleaning cycle the display will read SELECT PRODUCT READY FOR USE The Brew Unit is now clean and ready to use ...

Page 73: ...ion with the funnel slightly lifted and the socket in vertical position 2 Refer to figure 5 22 lubricate the following A Joints B Axel C Tracks D Gasket Figure 5 22 Brew Unit lubrication points 3 Refer to figure 5 23 lubricate the following E Bolt Assembly F Joints Figure 5 23 Brew Unit lubrication points 4 Return the brew unit into the appliance ...

Page 74: ...figure 5 24 1 Press on the latch A and press the funnel down B 2 Push the connection piece to the far left position C 3 Press PRESS once Figure 5 24 Moving the Brew Unit to home position 4 The Home position Figure 5 25 after resetting the Brew Unit The Brew Unit can now be reinstalled into the appliance Figure 5 25 Brew Unit in reset position ...

Page 75: ...move the output 4 Remove the spring and Creamer Valve 5 29 Brew Unit Handle Removal 1 Remove the Brew Unit from the appliance 2 Press the handle retaining lugs inwards Figure 5 26 3 Remove the handle Figure 5 26 Brew Unit highlighting the output assembly covering the Creamer Valve and retaining lugs for securing the handle to the Brew Unit body ...

Page 76: ...Locking Lug Figure 27 Item 1 so that the funnel is no longer raised 3 Lever the funnel upwards out of its holder Figure 5 28 Note When installing the Funnel ensure the spring Figure 5 28 Item 1 is seated correctly Figure 5 27 Rear of Brew Unit highlighting the funnel lock Figure 5 28 Front of Brew Unit showing spring location and holder ...

Page 77: ...move the Brew Unit from the appliance 2 Remove the funnel 5 32 3 Remove the bottom filter screw and filter Figure 5 29 Items 1 and 2 Figure 5 29 Releasing the ram from the bottom of the brew unit 4 Unclip the lever from the ram 5 Pull the ram outward to remove from the Brew Unit ...

Page 78: ...r Figure 5 30 ram and bottom filter by hand with warm water without detergent then dry 7 Apply silicone grease to the ram lubrication points Figure 5 30 Brewing unit chamber inside the brew unit assembly Figure 5 31 Ram assembly 1 Filter Screw 2 Filter 3 Lubrication points ...

Page 79: ...t locations during re assembly 7 Disconnect L1 and N from the Door Switch to the Interference Suppressor 8 Disconnect the ground wires from the Cord Socket Terminal Block 9 Disconnect the following connections from the Power Electronic JP2 JP12 JP4 10 Disconnect the following connections from the CPU Electronic JP34 JP35 JP25 JP39 JP41 Ribbon Cable 11 Disconnect the ground connection from the Disp...

Page 80: ...er Screws Separate the Heater from its mounting position 17 Refer to Figure 5 32 Remove the two Cosmetic Fixing screws Remove the Cosmetic Fixing from inside the appliance Figure 5 32 Front Plate Assembly with Retaining Screw Locations 18 Refer to Figures 5 33 and 5 34 19 Remove the two screws and nuts that secure the Grinder Plate Assembly to the top of the Front Plate Assembly ...

Page 81: ...Technical Information 73 CVA615 Coffee System Figure 5 33 Grinder Retaining Screws Figure 5 34 Grinder Retaining Nuts ...

Page 82: ...two Upper Front Plate Assembly Retaining Screws as shown in Figure 5 35 24 Remove all remaining screws from the Front Plate Assembly Lift upward on the Front Plate Assembly to access the screws near the bottom of the plate Use Figure 5 32 to locate all screws Figure 5 35 Upper Front Plate Assembly Retaining Screws 25 Move the Drive Assembly Cover toward the rear wall of the appliance 26 Move the D...

Page 83: ...sed to temporarily keep the Front Plate Assembly in an elevated position Figure 5 36 Using a suitable item to keep the Front Plate Assembly elevated to access the screws at the bottom 27 Position the Drive Assembly so access to the rear cover is possible 28 Remove the 5 screws that secure the cover 29 Lift the cover from the Drive Unit 30 Refer to 4 15 for information on the Drive Assembly ...

Page 84: ...Coffee System 5 33 Water Tank Float Removal 1 Open the door 2 Remove the Water Tank 3 Remove the cap from the Water Tank Figure 5 37 4 Remove the Water Tank Float Figure 5 37 Removing the cap to access the float in the water container ...

Page 85: ...5 Coffee System 5 34 Water Tank Lip Seal Removal 1 Open the door 2 Remove the Water Tank Figure 5 38 Removing the lip seal 3 Lever off the Lip Seal Cap Figure 5 38 4 Remove the Lip Seal Figure 5 39 Figure 5 39 Removing the lip seal ...

Page 86: ... Coffee System 5 35 Lower Section of Tank Valve Removal 1 Open the door 2 Remove the Water Tank 3 Remove the Lip Seal 5 38 4 Remove the lower part of the Valve Fixing Screws Figure 5 40 Item 1 Figure 5 40 Water tank lip seal removal ...

Page 87: ...15 Coffee System 5 Remove the Bottom Plate and Drip Tray 5 6 5 7 6 Disconnect the lower part of the valve connections 7 Remove the lower part of the valve Fig 5 41 Underside view of the CVA615 with Base Plate and Drip Tray removed ...

Page 88: ...6 Beans Container Removal 1 Open the door 2 Remove the Beans Container End Stop Screw Figure 5 42 3 Hold a suitable container under the beans container opening to collect loose beans remove the beans container Figure 5 42 Removing the beans container ...

Page 89: ...Remove the Waste Container Brew Unit and Water Tank 4 Remove the Top Lid 5 1 5 Remove the guide retaining screws Figure 5 43 Item 2 6 Remove the guide and carrier Figure 5 43 Item 1 Note During installing first fit the carrier Figure 43 Item 1 in position and then fit the guide on the carrier Fig 5 43 Beans Container Guide 1 carrier 2 retaining screws ...

Page 90: ...ontainer 5 39 3 Remove the Waste Container Brew Unit and Water Tank 4 Remove the Top Lid 5 1 5 Remove the Beans Container Guide 5 40 6 Set the grinding grade adjustment lever to the mid setting Figure 5 44 1 Grinder Adjustment Lever 2 Lever Fixing Screws 7 Pull off the handle Figure 5 44 Item 1 8 Remove the Adjustment Lever Fixing Screws Figure 44 Item 2 and the Adjustment Lever ...

Page 91: ... Item 2 Figure 5 45 Grinder 1 Adjustment Ring 2 Carrier 3 Bracket 10 Remove the bracket Figure 5 45 Item 3 11 Remove coffee residues e g with a vacuum cleaner Note The Grinding Cone Fixing Screw has a left hand thread 12 Remove the grinding cone fixing screw Figure 5 46 Item 1 by turning it clockwise 13 Remove the intake worm gear Figure 5 46 Item 2 14 Remove the washer Figure 46 Item 3 ...

Page 92: ... Carriers 11 Felt ring 12 Grinder motor Note When the Grinding Cone Figure 46 Item 6 is removed the balls Figure 41 Item 8 may stick to it and then fall off Refer to figure 5 46 below 15 Remove the Grinding Cone Item 6 16 Remove the balls Item 8 17 Remove the mounting Item 7 18 Remove the springs Item 9 19 Remove the carriers Item10 20 Remove the felt ring Item 11 Figure 5 46 Grinder ...

Page 93: ...he Grinding Cone Screw 1 counter clockwise Ensure the intake worm gear coupling has engaged properly Note Before setting the grinder remove all coffee from the grinder 10 Fit the bracket 3 11 The blue marking on the carrier 2 has the same position as the blue marking on the adjustment ring item 1 both point toward the front of the appliance 12 Turn the Adjustment Ring Clockwise as far as possible ...

Page 94: ...t and Water Tank 4 Remove the Top Lid 5 1 5 Remove the Beans Container Guide 5 40 6 Remove the Adjustment Slide Switch Frame 5 4 7 Remove the Adjustment Lever Fixing Screws and Lever 8 Remove the cover fixing screws Figure 5 47 4 9 Remove the cover Note Mark the polarity of the plug Figure 48 Item 1 connected to the electronic unit Figure 5 47 Grinder Removal ...

Page 95: ...der upwards from the dampers Figure 5 48 2 1 Motor holder 2 Damper 3 Mounting plate Figure 5 48 Grinder coupling Note When installing the grinder the dampers should be firmly seated in the mounting plate and motor holder Ensure the grinder coupling is completely secured so grinder noise is kept to a minimum ...

Page 96: ... Press the retainers outward 6 Slide the Dispensing Solenoid upward out of the guide 7 Disconnect the electrical connections 5 42 Dispenser Switch Removal 1 Remove the Top Lid 5 1 2 Remove the Rear Panel 5 3 3 Remove the Beans Container 5 39 4 Remove the Beans Container Guide 5 40 5 Remove the Dispensing Solenoid 5 43 6 Press the retainers outwards Remove the switch 7 Disconnect the electrical con...

Page 97: ...g position refer to section 6 for further information on service mode access 3 Press and hold all three coffee buttons the display shows the following 5678 34 Does a pulsing flickering 8 appear in the top line of the display NO YES Normal Operation Proceed to step 6 Does water flow from the Hot Water Spout NO YES a Unplug JP25 from the CPU Electronic b Place a jumper between pins 2 3 figure 5 49 c...

Page 98: ...ttons Observe the number displayed in the bottom right of the display see figure 5 50 5678 34 Figure 5 50 Display while in Service Mode Is the displayed value 30 or higher NO YES Normal Operation Ensure Sufficient water is present The water path is clear Water lines are not crimped Heaters flowmeter etc freely pass water Water valves fully open Water line connections are tight do not leak ...

Page 99: ...6 for further information on service mode access 3 Press and hold all three coffee buttons check for signs of leakage dripping squirting etc 4 Release the three coffee buttons to end the test If the steps 1 5 does not disclose any leaks continue as follows 5 Fill the Water reservoir completely 6 Place the appliance into the Service Mode 7 Quickly turn the selector knob to the Operation position 8 ...

Page 100: ...ng Item 1 2 Pull out the hose from the connector 3 Remove the sealing rings Item 2 1 Retaining spring 2 Sealing rings 3 Pressed on ring Figure 5 51 Water path connection 5 46 Water Path Connections Closing 1 Check the sealing rings for damage and replace as necessary 2 Fit the sealing rings on the hose 3 Insert the hose in the connector 4 Fit the retaining spring behind the pressed on ring 5 As a ...

Page 101: ... Language German Dutch Portuguese Spanish English Italian or French Rinsing on off Water hardness hardness levels 1 to 4 Temperature long coffee minimum low medium high maximum Temperature coffee minimum low medium high maximum Temperature short espresso coffee minimum low medium high maximum Pre brewing on off Pre grinding off on Program hot water off on Total coffee number of coffee servings Des...

Page 102: ...ollowing page turn the selector knob to the desired position 3 Release the SMALL COFFEE and HOT WATER buttons 4 Press the applicable button to activate the function listed Acknowledgement Indicator The following is an example indicates the appliance is in the Service Mode 567 2 128 The display indicates the switches currently actuated 1 Brewing position switch brew unit drives 2 Home position swit...

Page 103: ...ton Test 1 displayed Med Coffee Button Test 2 displayed Small Coffee Button Test 3 displayed Hot Water Button Test 5 displayed LIGHT Rinse Button Test 4 displayed Large Coffee Drive motor ON till Brew Position Switch is contacted Med Coffee Drive motor ON reverse direction till Home Switch is contacted Small Coffee Grinder ON Hot Water not used ON W LIGHT Rinse Dispenser Solenoid ON Large Coffee H...

Page 104: ...COFFEE BEANS The bean container is empty OR The grinder may be jammed Add coffee beans to the beans container Clean the conical grinder top of grinder BREW UNIT MISSING Brew unit is not installed OR Not installed correctly Reinstall the brew unit Check brew unit present switch DESCALING Perform the Descale Procedure WASTE UNIT MISSING Waste unit is not installed Re install the waste unit Check mag...

Page 105: ...lower pan and locate repair source of leak Check level switch for proper operation FILL WATER TANK The water tank level switch is not actuated water tank float is below the switch level Refill the water tank Check that float and switch operate EMPTY WATERTANK Check that flowmeter is plugged into the correct position of the electronic WARMING UP Appliance is warming up as warming up the in the disp...

Page 106: ...he appliance i e shutting the door and turning on the power Perform the manual removal procedure Inspect the brew unit and or drives to locate fault Brew Unit Cannot be Installed The part marked PRESS was pressed during installation of the Brew Unit Do not press the part marked PRESS when installing the Brew Unit this only applies during Brew Unit removal The Brew Unit is not in the starting home ...

Page 107: ...and grinding cone The ground coffee prevents the gap between the grinding ring and grinding cone from being reduced Perform the following 1 Set the adjustment lever to the finest setting possible 2 Prepare a coffee 4 Set the adjustment lever to a finer setting Warning To avoid damage to the grinder the grinding grade should only be adjusted in small steps ...

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Page 109: ...Technical Information 101 CVA615 Coffee System 6 5 Wiring Diagram ...

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Miele CVA 615, Technical Information

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