TECHNICAL INFORMATION CVA610 Coffee System © 2004 Miele
CVA610 Coffee System - Table of Contents 1.0 CONSTRUCTION & DESIGN 1.1 Appliance Overview 1 1.2 Technical Data 3 1.3 Layout of Components 5 2.0 INSTALLATION Installation Procedures 7 3.0 COMMISSION and OPERATION 3.1 General Operation 9 3.1.1 Preparing Coffee 9 3.1.2 Canceling the Preparation 10 3.1.3 Steam Control 10 3.1.4 Hot Water Dispensing 11 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 (Continued) 4.18 Water Path 36 4.18.1 Water Intake 37 4.18.2 Water Path - Coffee 37 4.18.3 Water Path – Hot Water 37 4.18.4 Water Path - Steam 37 4.18.5 Steam Valve and Steam Valve Switch 37 4.19 Heater Outlet Valve (Nipple) 38 4.20 Electronic Assembly 39 5.0 SERVICE and MAINTENANCE 5.1 Lid – Removal 41 5.2 Mains Filter – Removal 41 5.3 Rear Panel – Removal 42 5.4 Adjustment Slide Switch Frame - Removal 43 5.5 Door Contact Switch - Removal 44 5.
.0 SERVICE and MAINTENANCE (Continued) 5.26 Brew Unit – Filter Cleaning 62 5.27 Brew Unit – Degreasing via the Rinse Cycle 63 5.28 Brew Unit – Lubrication 65 5.29 Brew Unit – Manual Reset to “Home Position” (Brew Unit Not Installed) 66 5.30 Brew Unit Creamer Valve – Removal 67 5.31 Brew Unit Handle – Removal 67 5.32 Brew Unit Funnel – Removal 68 5.33 Brew Unit Ram – Service 69 5.34 Water Tank Level Indicator Float – Removal 71 5.35 Water Tank Sealing Ring – Removal 72 5.
.0 FAULT DIAGNOSIS 6.1 Programming Mode 89 6.2 Service Mode 90 6.3 Displayed Messages 92 6.4 Uneven Filling 94 6.5 Brew Unit – Can’t be removed from appliance 94 6.6 Brew Unit – Can’t be installed 94 6.
CVA610 Coffee System – List of Figures 1-1 Appliance Overview (Exterior) 1 1-2 Appliance Overview (Interior) 2 1-3 Product Dimensions 3 1-4 Overview of Components 5 2-1 Installation Information 7 3-1 Coffee cup placed under both dispensers 9 3-2 Pressing the Coffee Button 9 3-3 Displayed Message During Dispensing 9 3-4 Canceling the preparation 10 3-5 Steam Control 10 3-6 Cup placed under hot water dispenser 11 3-7 Hot Water Button 11 3-8 Grinder Adjustment Control 12 3-9 Filling t
CVA610 Coffee System – List of Figures (Continued) 4-24 Electronic Board (Layout) 39 5-1 Lid and Securing Screws 41 5-2 Mains Filter Mounting 41 5-3 Rear Panel – Removal 42 5-4 Removing the Slide Switch Frame 43 5-5 Door Switch 44 5-6 Base Plate Removal 45 5-7 Drip Tray 46 5-8 Overflow Switch Float 47 5-9 Overflow Switch 48 5-10 Fluorescent Lamp Access and Removal 49 5-11 Starter Removal 49 5-12 Rear Door Panel – Removal 50 5-13 Fascia Panel Cover Assembly 51 5-14 Selector Switch
CVA610 Coffee System – List of Figures (Continued) 5-38 Underside view of the CVA610 74 5-39 Removing the Bean Container 75 5-40 Removing the Beans Container Guide 76 5-41 Accessing the Grinder 77 5-42 Upper section of the Grinder 78 5-43 Grinder 79 5-44 Grinder Removal 81 5-45 Grinder Coupling 82 5-46 Brew Unit Present Switch 83 5-47 Water System Connection 86 CVA610 Coffee System – List of Tables 5-1 Programming Mode 89 5-2 Service Mode Navigation 91 5-3 Displayed Messages (part 1
CVA610 Coffee System Technical Information 1.0 Construction and Design 1.
CVA610 Coffee System Technical Information Figure 1-2: Appliance Overview (Interior) 2
CVA610 Coffee System Technical Information 1.2 Technical Data Figure 1-3: CVA610 Product Dimensions Electrical Information The CVA610 Coffee System is equipped with a power cord and a molded NEMA 6-15P plug for connection to a 240 (208) V, 15 A, 60 Hz NEMA 6-15R (receptacle).
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CVA610 Coffee System Technical Information 1.
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CVA610 Coffee System Technical Information 2.0 Installation Figure 2-1: Installation Information Note For further information, refer to the installation section of the Operating Manual -OR- the Miele installation Manual.
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CVA610 Coffee System Technical Information 3. Commission and Operation 3.1 General Operation 3.1.1 Preparing Coffee 1. Place a cup under both coffee dispensers. Figure 3-1: Coffee cup placed under both dispensers. 2. Press the desired coffee button once. Figure 3-2: Pressing the coffee button The coffee will be prepared.
CVA610 Coffee System Technical Information 3.1.2 Canceling the Preparation Press one of the coffee buttons to stop preparation immediately. Figure 3-4: Canceling the preparation 3.1.3 Steam Control ● Turn the steam ON by turning the steam selector counterclockwise. ● Turn the steam OFF by turning the steam selector clockwise.
CVA610 Coffee System Technical Information 3.1.4 Hot Water Dispensing 1. Place a cup under the hot water dispenser. Figure 3-6: Cup placed under hot water dispenser 2. Press the hot water button. Hot water will be dispensed. 3. Press the hot water button again to stop the hot water flow. Figure 3-7: Hot water button Service Tip The hot water dispensing stops automatically if… a specific volume (cup size) is programmed and the "Programmed Hot Water" feature is activated.
CVA610 Coffee System Technical Information 3.1.5 Adjusting the Coffee Grinder Controls: to the left for finer grinding to the right for coarser grinding. Figure 3-8 Grinder Adjustment Controls If the coffee flows too quickly, the beans have been ground too coarsely. Adjust the grinder to a finer setting. If the coffee trickles, the beans have been ground too finer. Adjust the grinder to a coarser setting. Note You should be able to feel the notches when moving the slide control.
CVA610 Coffee System Technical Information 3.1.6 Filling the Coffee Bean Container 1. Carefully pull the container outward until the lid is visible. 2. Lift the lid (as shown in figure 3-9. 3. Fill the container with coffee beans to about 1" from the top. 4. Close the lid and push the container back into place. 5. Shut the appliance door. Figure 3-9 Filling the Coffee Bean Container Important Only put pure espresso or coffee bean in the container.
CVA610 Coffee System Technical Information 3.1.7 Filling the Water Tank The Water Tank must be cleaned and filled with fresh water before each day of use. A reminder will appear in the message window when 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 liquids to the water tank. 4.
CVA610 Coffee System Technical Information 4.0 Description of Function 4.1 Door Switch (S24) The Door Switch interrupts the main power circuit when the door is opened. Figure 4-1: Door Contact Switch (S24) 4.2 Overflow Switch (B8/3) The Overflow Switch is mounted to the bottom of the casing. The associated float (with internal magnet) is located within the drip tray. Should a leak develop, water flows into the drip tray. The float rises and the Overflow Switch becomes actuated.
CVA610 Coffee System Technical Information 4.3 Brew Unit – Home Position Refer to figure 4-2. The brew unit must be in the “home position” before it can be removed from the appliance. Fig.
CVA610 Coffee System Technical Information 4.4 Brew Unit – Drive and Water Connections Refer to figure 4-3. When the Brew Unit is installed, 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 (item 1) to provide drive to the Brew Unit.
CVA610 Coffee System Technical Information 4.5 Brewing Procedure 1. The output of the Grinder provides ground coffee to the Dispenser Housing; until it filled (as determined by the dispenser switch). 2. The Grinder is then powered by off by the Electronic. 3. The Dispenser Flap opens twice (two clicks can be heard) via the Dispenser Solenoid. 4. The ground coffee falls into the Brew Unit (via the funnel).
CVA610 Coffee System Technical Information Refer to figure 4-5 5. The Brew Unit Drives move the Brew Unit into the “Brewing Position” (as determined by the Brew Position Switch). The grounds are compressed between the top filter (item 2) and bottom filter (item 5). 6. The Water Pump is energized to pump the water through the Hot Water / Coffee Nozzle and into the Brew Unit via the Water Connection Socket (item 4).
CVA610 Coffee System Technical Information Refer to figure 4-6… 7. The drives are energized (in reverse) and move the Brew Unit toward the “home position” position. As this action occurs the coffee chamber moves upward and releases the used compressed coffee grounds. (item1). 8. The drives continue, returning the Brew Unit to the “home position” (as determined by the Home Position Switch. Figure 4-6: Brew Unit, showing compressed coffee “puck”.
CVA610 Coffee System Technical Information 4.6 Waste Unit After coffee has been prepared, the compressed coffee grounds “puck” falls into the Waste Unit. The electronic monitors the number of the compressed “pucks”, until a specific value is reached. The electronic then displays the “Empty Waste Unit” message to the user. 4.7 Waste Unit Present Switch The Waste Unit Present Switch is mounted to the bottom of the CVA610 housing (behind the area of the Waste Unit) – as shown in the figure 4-7.
CVA610 Coffee System Technical Information The actuating magnet (Figure 4-8, item 1) for the Waste Unit Present Switch is located at the bottom edge of the Waste Unit. Figure 4-8: Waste Unit. (1) Magnet for Waste Unit Present Switch. Note On newer manufactured Waste Units, an additional magnet is present to keep the waste unit attached to the metal frame inside the appliance. The magnet for the Waste Unit Present Switch remains in the same location.
CVA610 Coffee System Technical Information 4.8 Water Tank Refer to the figure 4-9. The Water Tank holds the water for the coffee, hot water and steam. When the water tank is fitted in position, the sealing ring presses upward so water cannot leak. Figure 4-9: Water Tank (1) Valve Assembly. When the Water Tank is removed from the appliance; a spring forces the sealing ring into a position so water cannot flow from the tank.
CVA610 Coffee System Technical Information 4.9 Water Level Switch The Water Level Switch is located within the housing, in the area behind the Water Tank Cavity (as shown in figure 4-10). Figure 4-10: Water Level Switch The Actuating Magnet for the Water Level Switch is located within the float. The float is then installed into the Water Tank (as shown in figure 11, item 1).
CVA610 Coffee System Technical Information 4.10 Grinder Assembly Refer to figure 4-12. The grinding grade depends on the gap between the Grinding Cone (Item 1) and the Grinding Ring (Item 2). The gap is set via the Adjustment Lever, (Item 5) on the Adjustment Ring (Item 3). The smaller the gap, the finer the grind of coffee will be.
CVA610 Coffee System Technical Information 4.11 Grinder - Overload Protection Should the grinder become blocked by a foreign object (i.e. stone / pebble), the slip coupling interrupts the drive between the motor and the grinder. Refer to figure 4-13… The Grinder Motor (item 1) drives the Mounting (item 3) via the Carriers (item 2). This rotary force transfers through the Balls, (item 5) to the Grinder Cone (Item 6).
CVA610 Coffee System Technical Information Should the grinder cone become blocked, the Balls get pressed into the Mounting (as shown below in figure 4-14, Item C) resulting in the drive force being interrupted. A Normal operation B Overload protection activated C Force transfer interrupted Figure 4-14: Grinder cone ball positions under various operating conditions.
CVA610 Coffee System Technical Information 4.12 Ground Coffee - Dispensing Refer to figure 4-15. By adjusting the Dispenser Lever (item 1), the position of the Dispensing Switch (item 2) is modified. The change results in change to the volume of the dispenser container; hence the quantity of ground coffee changes. Each position along the setting alters the coffee quantity by about 0.5 grams. The grinder fills the dispenser container with ground coffee.
CVA610 Coffee System Technical Information Figure 4-16: Dispensing Lever The dispensing solenoid is activated twice by the electronic. During the initial activation the ground coffee drops into the brew unit. The second activation is to ensure no loose grounds block the channel, as the wiper passes and loosens any ground coffee residues. If the dispenser container is not filled (i.e. no coffee beans) the Dispenser Switch is not activated and the “Fill Coffee Beans” message is displayed.
CVA610 Coffee System Technical Information 4.13 Brew Unit Drives Refer to figure 4-17… The Brew Unit locks into position against the Drives Mounting Plate. The locking mechanism Switch Lug (Item 3) activates the Brew Unit Present Switch (Item 4).
CVA610 Coffee System Technical Information Refer to figure 5-18. The Drive Motor (Item 4) powers the Worm Gear (Item 3). The drive action is transferred to the Step-down Gear and then the Drive Gear. The center of the Drive Gear contains the Drive Shaft that connects to the Brew Unit Drive Shaft Socket. The drive gear The drive shaft cog wheel has two switch actuators, (Items 2 & 5) for the limit switches for the brew position and home position.
CVA610 Coffee System Technical Information 4.14 Water Pump The pump is self-priming and can develop a pressure of up to approx. 16 bar. For espresso preparation a pressure of approx. 8 bar is required so that the water can be forced through the compressed ground coffee. A further increase in pressure does not improve beverage quality. The pump is fitted with a safety valve which opens at 16 bar system pressure.
CVA610 Coffee System Technical Information 4.15 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 100 ml water.
CVA610 Coffee System Technical Information 4.17 Heaters Refer to the figure 4-20… The Coffee / Hot Water consist of a large heater element (Item 1) and a smaller heater element (item 7). The Steam Heater has consist of one heater element (figure 4-21, Item 3). Each Heater uses a temperature sensor (Item 5) that provides signals to the Electronic to monitor the temperature ; and control the cycling (switching) of the Heater Element(s).
CVA610 Coffee System Technical Information The heating circuit also contains a Temperature Activated Safety Fuse. Should the temperature exceed a specific threshold due to an operating fault, the fuse blows and interrupts power to the element(s). Should this fuse be blown, the cause must be located and resolved before replacing the fuse.
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CVA610 Coffee System Technical Information 4.18.1 Water Intake The Water Pump is responsible for taking in water from the Water Tank. The bottom of the pump contains a safety valve. The valve is designed to open should the system pressure exceed 16 bar (232 psi). A hose is connected to the valve to route the water away from the components. 4.18.
CVA610 Coffee System Technical Information 4.19 Heater Outlet Valve (Nipple) The Heater Outlet Valve is normally closed. However, during the brewing process the Brew Unit is driven into the “Brew Position and mechanically opens valve. This allows the hot water (under pressure) to flow through the brew unit. The Heater Outlet Valve uses several o-rings to ensure the connection between the Outlet Valve and the Brew Unit remain air and water tight.
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CVA610 Coffee System Technical Information 5.0 Service and Maintenance 5.1 Lid - Removal 1. Remove the lid screws, as shown in Figure 5-1 2. Remove the lid. Figure 5-1: Lid and securing screws 5.2 Mains Filter (Z1) - Removal 1. 2. 3. 4. Perform: Lid removal (5.1). Remove the mains filter nut (Figure 2 - Item 1). Remove the Filter.
CVA610 Coffee System Technical Information 5.3 Rear Panel - Removal 1. 2. 3. 4. 5. Remove the lid (5.1). Remove the Mains Filter (5.2). Remove the fixing screws from the rear panel. Disconnect the earth lead from the rear panel. Remove the rear panel upwards.
CVA610 Coffee System Technical Information 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).
CVA610 Coffee System Technical Information 5.5 Door Contact Switch (S24) - Removal Refer to figure 5-5 below… 1. 2. 3. 4. 5. Remove the lid (5.1) Open the door. Disconnect the door switch connections. Press the switch retaining lugs inwards with a small screwdriver. Remove the door switch to the front.
CVA610 Coffee System Technical Information 5.6 Base Plate - Removal 1. 2. 3. 4. 5. Remove the Lid, Mains and Rear Panel (5.1 to 5.3) Open the door. Remove the grounds container. Remove the water tank. 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 via a suitable device / tool. 7. Remove the percolator unit. 8. Remove the coffee beans from their container. 9. Remove the base plate fixing screws. 10.
CVA610 Coffee System Technical Information 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.
CVA610 Coffee System Technical Information 5.8 Overflow Switch Actuator Float - Removal 1. Remove the Lid, Mains and Rear Panel (5.1 to 5.3) 2. Remove the Base Plate (5.6) Note The orientation of the float before removal – ensure it is re-installed in the same direction. 3. Remove the Float.
CVA610 Coffee System Technical Information 5.9 Overflow Switch (B8/3) - Removal 1. 2. 3. 4. Remove the Lid, Mains and Rear Panel (5.1 to 5.3) Remove the overflow switch fixing screw (Figure 9 – Item 1). Remove the overflow switch. Disconnect the overflow switch connections from the electronic.
CVA610 Coffee System Technical Information 5.10 Fluorescent Lamp - Removal Refer to the figure 5-10 below… 1. Open the door. 2. Unclip the cover and remove it. 3. Turn the lamp tube 90° in the direction to remove the lamp. Figure 5-10: Fluorescent Lamp Access and Removal. 5.11 Lamp Starter - Removal Refer to the figure 5-11 below… 1. Open the door. 2. Unclip the neon tube cover and remove it. 3. Turn the starter in the direction of the arrow. 4. Remove the starter.
CVA610 Coffee System Technical Information 5.12 Rear Door Panel - Removal Refer to figure 5-12. 1. Open the door. 2. Remove the upper rear panel fixing screws (Item 1). 3. Remove the lower rear panel fixing screws (Item 2). Figure 5-12: Rear Door Panel – Removal.
CVA610 Coffee System Technical Information 5.13 Fascia Panel Cover – Removal 1. Open the door. 2. Remove the Rear Door Panel (5.12). 3. Remove the cover fixing screws (Figure 12 – Item 3). 4. Remove the cover.
CVA610 Coffee System Technical Information 5.14 Selector Switch - Removal Refer to figure 5-14. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.12 & 5.13). 3. Disconnect the connections from the selector switch, 4. Remove the switch knob (Item 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.
CVA610 Coffee System Technical Information 5.15 Display Module Electronic - Removal Refer to figure 5-15. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.12 & 5.13). 3. Pull off the pushbutton knobs (Item 1). 4. Disconnect the connections from the electronic (Item 7). 5. Remove the electronic unit fixing screws (Item 6). 6. Remove the electronic unit. 7. Remove the display module fixing screws (Item 3).
CVA610 Coffee System Technical Information 5.16 Coffee Dispensing Nozzle - Removal Refer to Figure 5-16. 1. Open the door. 2. Remove the grille and drip tray from the door. 3. Remove the fixing screws from the white panel under and behind the nozzle. 4. Remove the white panel. Note The two fixing 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 (Item 6), from the outlet, (Item 7).
CVA610 Coffee System Technical Information 5.17 Coffee Dispensing Nozzle - Fitting Refer to figure 5-16. 1. Slide the outlet (Item 7), onto the connection hose (Item 6). 2. Position the moveable coffee dispensing nozzle, (Item 9), in the cover (Item 10). 3. Clip the outlet (Item 7), in the cover (Item 10). Note The two fixing 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.
CVA610 Coffee System Technical Information 5.18 Steam Valve and Steam Valve Switch (S79) – Removal Refer to Figure 5-17. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.12 & 5.13). 3. Pull off the switch knob (Item 8). 4. Remove the holder fixing screws (Item 3). 5. Remove the holder. 6. Remove the steam generator switch screws (Item 10). 7. Remove the steam generator switch. 8. Disconnect the steam generator switch connections.
CVA610 Coffee System Technical Information 5.19 Hot Water Nozzle – Removal Refer to figure 5-18. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.12 & 5.13). 3. Loosen the nut (Item 2). 4. Remove the holder (Item 5). 5. Unscrew the sleeve, (Item 1) from the connector (Fig. 6). 6. Pull out the hot water nozzle (Item 3), from the connector.
CVA610 Coffee System Technical Information 5.20 Hot Water Valve (Y12) – Removal Refer to figure 5-18. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.12 & 5.13). 3. Disconnect the connections from the hot water valve (Item 7). 4. Loosen the hot water valve nuts. 5. Pull out the hot water valve from the connector (Item 6). 5.21 Coffee Temperature - Check 1. Set the grinding grade to medium. 2. Set the coffee quantity to medium. 3.
CVA610 Coffee System Technical Information 5.23 Brew Unit — Removal ( NOT in start/home position) Warning This procedure will remove the brew unit from the appliance without damages. However.., after the brew unit is removed; the drives must be carefully inspected (and repaired if necessary) then placed into the start (home) position via the service mode. Before performing this procedure close the front door, turn the power on to initiate a drive reset during the start-up sequence. Once “Ready...
CVA610 Coffee System Technical Information Figure 5-19: Brew Unit (1) Connection Socket (2) Retaining Screw Figure 5-20: Brew Unit Connection Socket Retaining Screw and Retaining Tab.
CVA610 Coffee System Technical Information 5.24 Brew Unit - Installation Slide the brew unit into position in the appliance until the locking mechanism engages with the drive mounting plate. Note Do not press the part marked PRESS during the installation of the brew unit. 5.25 Brew Unit – Cleaning Procedure Note - Clean the brew unit by hand only. The moving parts and the rubber gaskets SHOULD NOT be cleaned in a dishwasher.
CVA610 Coffee System Technical Information 3. Pull the brew unit out (Figure 21 – Item 2). 4. Clean the brew unit thoroughly under running warm water without detergent. 5. Rub away coffee residues from the steel filters with a sponge. 6. Dry the funnel to prevent ground coffee from sticking. 7. After cleaning press "PRESS". Figure 5-22: Brew unit installation 8. Push the brew unit in the track straight into the appliance without pressing "PRESS" until it clicks in place. 5.
CVA610 Coffee System Technical Information 5.27 Brew Unit - Degreasing via the Rinse Cycle Note The natural oil found in coffee can cause the brew unit to clog. The message "Rinsing cycle" will flash in the message window after 500 cups to remind you to clean the unit using “cleaning tablets” These specialty-cleaning tablets can be purchased from Miele via the Technical Support Center at 1-800-999-1360. 1. Remove the waste unit. 2.
CVA610 Coffee System Technical Information 8. Press ENTER. The display will read: A small amount of 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: The brew unit is now clean and ready to use.
CVA610 Coffee System Technical Information 5.28 Brew Unit – Lubrication 1. Remove the Brew Unit. Note Check that the brew unit is in the basic position with the funnel slightly lifted and the socket in vertical position. Ensure the correct lubricant (Miele P/N 5132001) is used for this procedure. Lubricant is available through the Miele Technical Support Center at: 1-800-999-1360. 2.
CVA610 Coffee System Technical Information 5.29 Brew Unit – Manual Reset to “Home Position” (Brew Unit not installed in appliance) Refer to figure 5-26 3. Press on the latch A; and press the funnel down B. 4. Push the connection piece to the far left position C. 5. Press "PRESS" once. Figure 5-26: Moving the brew unit to home position. 6. The “home” position (Figure 27) after resetting the Brew Unit. The Brew Unit can now be reinstalled into the appliance. Figure 5-27: Brew unit in reset position.
CVA610 Coffee System Technical Information 5.30 Brew Unit Creamer Valve - Removal 1. 2. 3. 4. 5.31 Remove the Brew Unit Remove the output fixing screws. Remove the output. Remove the spring with Creamer Valve. Brew Unit Handle - Removal 1. Remove the Brew Unit from the appliance. 2. Press the handle retaining lugs inwards (Figure 5-28). 3. Remove the handle. Figure 5-28: Brew Unit Highlighting the Output Assembly (Covers the Creamer Valve) and the Retaining Lugs Securing the Handle to the Assembly.
CVA610 Coffee System Technical Information 5.32 Brew Unit Funnel - Removal 1. Remove the Brew Unit from the appliance. 2. Press the funnel locking lug (Figure 29, Item 1), so that the funnel is no longer raised. 3. Lever the funnel upwards out of its holder (Figure 5-30). Note When refitting the Funnel, ensure the spring (Figure 5-30, Item 1) is seated correctly.
CVA610 Coffee System Technical Information 5.33 Brew Unit Ram - Service 1. Remove the Brew Unit from the appliance. 2. Remove the funnel (5.32). 3. Remove the bottom filter screw and filter (Figure 5-31, Items 1 &2). Figure 5-31: 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.
CVA610 Coffee System Technical Information 6. Clean the brewing chamber (Figure 32), ram and bottom filter by hand with warm water without detergent, then dry. 7. Apply silicone grease to the ram lubrication points (Figure 5-33, Item 3). Figure 5-32: Brewing unit chamber inside the brew unit assembly. Figure 5-33: Ram assembly.
CVA610 Coffee System Technical Information 5.34 Water Tank Level Indicator Float - Removal 1. 2. 3. 4. Open the door. Remove the Water Tank. Lever off the cap from the Water Tank level indicator. Remove the Water Tank level indicator.
CVA610 Coffee System Technical Information 5.35 Water Tank Valve Sealing Ring - Removal 1. Open the door. 2. Remove the Water Tank. Figure 5-35: Levering off the Lip Seal Cap. 3. Lever off the Lip Seal Cap (Figure 35). 4. Remove the Lip Seal (Figure 16, Item 1).
CVA610 Coffee System Technical Information 5.36 Lower Section of Tank Valve - Removal 1. 2. 3. 4. Open the door. Remove the Water Tank. Lip seal removal. Remove the lower part of the valve fixing screws (Figure 37 – Item 1). Figure 5-37: Water Tank Lip Seal - Removal.
CVA610 Coffee System Technical Information 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. Figure 5-38: Underside view of the CVA610 with Base Plate and Drip Tray removed.
CVA610 Coffee System Technical Information 5.37 Bean Container - Removal 1. Open the door. 2. Remove the Beans Container end stop screw (Figure 39). 3. Hold a suitable vessel under the container to collect the beans that will fall from the opening in the Beans Container. Figure 5-39: Removing the Bean Container.
CVA610 Coffee System Technical Information 5.38 Bean Container Guide - Removal 1. 2. 3. 4. 5. 6. Open the door. Perform the Beans Container. (5.37) Remove the Waste Container, Brew Unit and Water Tank. Remove the Top Lid (5.1). Remove the screws (Figure 5-40 - Item 2). Remove the guide and carrier, (Figure 5-40 – Item 1). Note When refitting, first fit the carrier (Figure 5-40 – Item 1), in position and then fit the guide on the carrier.
CVA610 Coffee System Technical Information 5.39 Grinder Unit - Disassembly Note The grinder ring (Figure 5-41, Item 5), and grinder cone (Figure 41 – Item 6), should always be replaced together. 1. 2. 3. 4. 5. 6. Open the door. Remove the Beans Container. (5.37). Remove the Waste Container, Brew Unit and Water Tank. Remove the Top Lid (5.1). Remove the Beans Container Guide removal (5.38). Set the Grinding Adjustment Lever to the mid setting. Figure 5-41: Accessing the grinder 7.
CVA610 Coffee System Technical Information 10. Turn the adjustment ring (Figure 5-42, Item 1), counterclockwise until the blue marking aligns with the blue marking on the carrier (Figure 5-42, Item 2). Figure 5-42: Upper Section of Grinder (1) Adjustment Ring, (2) Carrier & (3) Bracket. 11. Remove the bracket (Figure 5-42, Item 3) 12. Remove coffee residues, e.g. with a vacuum cleaner. Note The grinding cone fixing screw has a left-hand thread. 13.
CVA610 Coffee System Technical Information Note When the grinding cone (Figure 5-43, Item 6), is removed the balls, (Figure 5-43, Item 8), may stick to it and then fall off. Refer to figure 5-43. 16. Remove the grinding cone (Item 6). 17. Remove the balls (Item 8). 18. Remove the mounting (Item 7). 19. Remove the springs (Item 9). 20. Remove the carriers (Item10). 21. Remove the felt ring (Item 11).
CVA610 Coffee System Technical Information 5.40 Grinder Unit - Assembly & Basic Setting Refer to Figure 5-43 on the previous page… Note The grinder ring (Item 6), and grinder cone, (Item 5), should only be exchanged together. 1. 2. 3. 4. 5. 6. Fit the felt ring (Item 11). Fit the carriers (Item 10). Fit the mounting (Item 7). Fit the springs (Item 9). Fit the balls (Item 8). Fit the grinding cone (item 6); ensure the balls are seated in the grinding cone. 7. Fit the washer (Item 3). 8.
CVA610 Coffee System Technical Information 5.41 Grinder Unit - Removal 1. Open the door. 2. Perform the Beans container removal (5.37). 3. Remove the Waste Container, Brew Unit and Water Tank. 4. Remove the Top Lid (5.1) 5. Remove the Beans Container Guide (5.38). 6. Adjustment slide switch frame removal (5.4). 7. Remove the adjustment lever fixing screws. 8. Remove the adjustment lever. 9. Remove the cover fixing screws (Figure 5-44, Item 4). 10. Remove the cover.
CVA610 Coffee System Technical Information 11. Remove the plug from the Electronic. 12. Lift the grinder upwards from the dampers (Figure 5-45, Item 2). 1 Motor holder 2 Damper 3 Mounting plate Figure 5-45: Grinder coupling Note When refitting the grinder, the dampers should be seated in the mounting plate and motor holder to ensure the grinder coupling is set to an optimal position and grinder noise is kept to a minimum.
CVA610 Coffee System Technical Information 5.42 Brew Unit Present Switch - removal 1. 2. 3. 4. Remove the Top Lid. Remove the Rear Panel. Disconnect the switch (Figure 5-46, Item 2). Press the retainers outward to remove the switch. Figure 5-46: Brew unit present switch location and removal. 5.43 Dispensing Solenoid - Removal 1. 2. 3. 4. 5. Remove the Top Lid (5.1). Remove the Rear Panel (5.3). Remove the Beans Container (5.37). Remove the Beans Container Guide (5.38).
CVA610 Coffee System Technical Information 5.45 Brew Unit Drives – Home Positioning 1. 2. 3. 4. 5. 5.46 Remove the Brew Unit from the appliance. Re-install the Waste Unit. Close the door. Turn the selector switch to one of the operating settings. Allow the drives to reset into the home position.
CVA610 Coffee System Technical Information 5.47 Water Path Leakage Test Should water be present in bottom of the appliance (i.e. Watersystem Fault); or a leak is suspected the following procedure can be used to locate the source of the leak. Caution The Heaters are hot during this test, and hot water under pressure could leak from the system. 1. 2. 3. 4.
CVA610 Coffee System Technical Information If the steps 1-5 do not disclose any leaks - continue as follows. 6. Fill the Water Tank 7. Place the appliance into the Service Mode 8. Quickly turn the selector knob to the “Operation” position 9. Press and hold all three coffee buttons for 30 seconds 10. Quickly turn the selector knob to the “Programming” position 11. Press and hold all three coffee buttons - check for signs of leakage (dripping, squirting etc...) 12.
CVA610 Coffee System Technical Information 5.49 Water Connections - Fitting 1. 2. 3. 4. 5. Check the Sealing Rings for damage - replace as necessary. Fit the Sealing Rings on the hose. Insert the Hose into the Connector. Fit the Retaining Spring behind the Pressed-On Ring. Ensure the Hose cannot be pulled from its Connector. Note The Pressed-On Rings cannot be replaced as a separate component. Should replacement be necessary the hose (as an assembly) must be replaced.
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CVA610 Coffee System Technical Information 6. Fault Diagnosis 6.1 Programming Mode The Programming Mode is available for access by the customer. The Programming Mode allows various options and / or features to configured.
CVA610 Coffee System Technical Information 6.2 Service Mode The Service Mode is used to check the status of various input switches and operate components in the appliance. The Service Mode is designed for accessed by qualified service personnel only. Initial requirements • Switch off the appliance • Ensure the front door is closed Access 1. Press and hold the SMALL COFFEE button and the HOT WATER button. 2.
CVA610 Coffee System Technical Information Service Mode - Navigation Displays Water Temperature for Water Heater and Steam Heater in Celsius.
CVA610 Coffee System Technical Information 6.3 Displayed Messages Displayed Message Information The brew unit is dirty. The brew unit is blocked. The brew unit is Jammed. BREW UNIT BLOCKED • Clean / inspect brew unit / check drives Air is present with the water system – EXPEL AIR • Perform “Expel Air” procedure. The beans container is empty OR The grinder may be jammed. • FILL COFFEE BEANS • Add coffee beans to the beans container.
CVA610 Coffee System Technical Information Displayed Message Information The appliance is in the energy saving STANDBY… • Press ENTER The level switch has been actuated by water being present in the base of the appliance WATER SYSTEM FAULT • Clear unit of water from lower pan and locate / repair source of leak.
CVA610 Coffee System Technical Information 6.4 Uneven Filling - When two cups of coffee/espresso are being prepared at the same time 1. Ensure the appliance is level – correct as necessary. 2. Clean the coffee nozzle. 6.5 Brew Unit – Can’t be removed from appliance The brew unit is not in the starting (home) position. Reset the brew unit to the starting (home) position via the service mode. The brew unit is jammed and cannot be removed by resetting the appliance (i.e.
CVA610 Coffee System Technical Information 6.7 Grinding Setting – Can’t be set to a finer position (adjustment lever blocked) Check for ground coffee between the grinding ring and grinding cone. The ground coffee may have clogged the gap between the ring and cone. 1. Set the adjustment lever to the finest setting possible. 2. Prepare a coffee. 3. Set the adjustment lever to a finer setting.
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