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Miele CVA615 Technical Information

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TECHNICAL INFORMATION
CVA615 Coffee System
© 2004 Miele

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  Summary of Contents for Miele CVA615

  • Page 1 TECHNICAL INFORMATION CVA615 Coffee System © 2004 Miele...
  • Page 3: Table Of Contents

    CVA615 Coffee System - Table of Contents 1.0 CONSTRUCTION & DESIGN 1.1 Appliance Overview 1.1.1 Front View 1.1.2 Controls 1.1.3 Interior (Front of Appliance Open) 1.2 Technical Data 1.3 Layout of Components 2.0 INSTALLATION Installation Procedures 3.0 COMMISSION and OPERATION 3.1 General Operation...
  • Page 4 4.0 DESCRIPTION of FUNCTION (Continued) 4.17 Flow Meter 4.18 Heaters 4.19 Flow Through Heaters 4.20 Water Path 4.20.1 Water Intake 4.20.2 Water Path – Coffee 4.20.3 Water Path – Hot Water 4.20.4 Water Path – Steam 4.21 Water Valve 4.22 Electronic Assemblies 4.22.1 Power Electronic 4.22.2 CPU Electronic 5.0 SERVICE and MAINTENANCE...
  • Page 5 5.0 SERVICE and MAINTENANCE (Continued) 5.26 Brew Unit – Lubrication 5.27 Brew Unit – Manual Reset to Home (out of appliance) 5.28 Brew Unit Creamer Valve – Removal 5.29 Brew Unit Handle – Removal 5.30 Brew Unit Funnel – Removal 5.31 Brew Unit Ram –...
  • Page 6 CVA615 Coffee System – List of Figures 1-1 Front Overview 1-2 Controls Overview 1-3 Interior View / Door Open 1-4 Product Dimensions 1- 5 Layout of Components 2-1 Operating Instruction Manual (Cover) 3-1 Cup placed under dispenser ports 3-2 Pressing the Coffee Button...
  • Page 7 CVA615 Coffee System – List of Figures (Continued) 4-19 Hot Water / Coffee Heater 4-20 Steam Heater 4-21 Water Path 4-22 Water Valve 4-23 Power Electronic 4-24 CPU Electronic 5-1 Lid and screws 5-2 Interference Suppression Filter 5-3 Rear Panel...
  • Page 8 CVA615 Coffee System – List of Figures (Continued) 5.30 Brew Unit chamber 5.31 Ram Assembly and lubrication points 5.32 Front Plate Assembly with Drive Assembly Screw Positions 5.33 Grinder Retaining Screws 5.34 Grinder Retaining Nuts 5-35 Upper Front Plate Assembly...
  • Page 9: Construction & Design

    CVA615 Coffee System Technical Information Construction and Design Appliance Overview 1.1.1 Front View Figure 1-1: Front Overview CVA615 1.1.2 Controls Figure 1-2: CVA615 Controls...
  • Page 10: Interior (Front Of Appliance Open)

    CVA615 Coffee System Technical Information 1.1.3 Interior (Front of Appliance Opened) Figure 1-3: Interior view of CVA615 with door opened...
  • Page 11: Technical Data

    Technical Information 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...
  • Page 12 CVA615 Coffee System Technical Information...
  • Page 13: Layout Of Components

    CVA615 Coffee System Technical Information Layout of Components Figure 1-5: CVA615 Overhead view of components...
  • Page 14 CVA615 Coffee System Technical Information...
  • Page 15: Installation

    CVA615 Coffee System Technical Information Installation Refer to the Installation section of the Operating Manual. Figure 2-1: Operating Manual...
  • Page 16 CVA615 Coffee System Technical Information...
  • Page 17: Commission And Operation

    CVA615 Coffee System Technical Information Commission and Operation General Operation 3.1.1 Preparing Coffee 1. Place 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.
  • Page 18: Canceling The Preparation

    CVA615 Coffee System Technical Information 3.1.2 Canceling the Preparation Press any one of the coffee buttons to stop 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.
  • Page 19: Hot Water

    CVA615 Coffee System Technical Information 3.1.4 Hot Water 1. Place a cup under the hot water dispenser. Figure 3-6: Placement of cup under the 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.
  • Page 20: Adjusting The Coffee Grinder

    CVA615 Coffee System Technical Information 3.1.5 Adjusting the Coffee Grinder Controls Slide to the left for finer grinding Slide to the right for coarser grinding. Figure 3-8: Grinder Controls If the espresso flows too quickly into the cup, the beans may have been ground too coarsely.
  • Page 21: Filling The Coffee Bean Container

    CVA615 Coffee System Technical Information 3.1.6 Filling the Coffee Beans Container 1. Open the appliance door. 2. Carefully slide the container out so that the lid is visible. 3. Lift the lid. 4. Fill the container with coffee beans to about 1" from the top.
  • Page 22: Filling The Water Tank

    CVA615 Coffee System Technical Information 3.1.7 Filling the Water Tank The water tank must be washed and filled with fresh drinking water each day. A reminder will appear in the message window when the unit is first turned on. 1. Open the front of the machine.
  • Page 23: Description Of Function

    CVA615 Coffee System Technical Information Description of Function Door Switch The door switch, removes power to the appliance when the door is opened. See figure 4-1. Figure 4-1: Door Contact Switch (S24) Overflow (reed) Switch The overflow switch is in the lower section of the appliance case.
  • Page 24: Brew Unit - Cleaning And Care

    CVA615 Coffee System Technical Information Brew Unit - Cleaning and Care The Brew Unit is a mechanically operated component that is subjected to high forces. After a long period of use, the Brew 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.
  • Page 25: Connection Of Brew Unit To Drive Mechanism

    CVA615 Coffee System Technical Information Connection of Brew Unit to Drive Mechanism 1 Drive Shaft Socket 2 Water Connection Socket 3 Locking Mechanism Switch Lug 4 Brew Unit Switch 5 Water Nozzle 6 Drive Shaft Figure 4-3: Brew Unit connections Operation Refer to the figure 4-3.
  • Page 26: Brew Unit Filters

    CVA615 Coffee System Technical Information 1 Funnel 2 Percolator chamber 3 Bottom filter Figure 4-4: Brew Unit Filters Refer to figure 4-5. 5. The drive tilts the percolator chamber and raises it to the brewing position. The ground coffee is compressed between the Top Filter (Item 2) and Bottom Filter (Item 5).
  • Page 27 CVA615 Coffee System Technical Information Refer to figure 4-6. 7. As the drive 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.
  • Page 28: Ground Container

    CVA615 Coffee System Technical Information Grounds Container After coffee has been prepared, the coffee grounds compressed 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.
  • Page 29 CVA615 Coffee System Technical Information The actuating magnet (Figure 4-8, Item 1) for the Waste Unit switch is fitted in the bottom edge of the container. The electronic monitors whether the waste unit is installed. Figure 4-8: Waste Unit. (1) Magnet for Present Switch Actuation.
  • Page 30: Water Tank

    CVA615 Coffee System Technical Information Water Tank Refer to figure 4-9. The Water Tank holds the water required for the brewing of the coffee, hot water and steam. When the Water Tank is installed, the sealing ring is pressed upwards allowing water to flow out.
  • Page 31: Water Level Switch

    CVA615 Coffee System Technical Information 4.10 Water Level Switch 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).
  • Page 32 CVA615 Coffee System Technical Information When the water tank is installed, and contains at least 30-33 ounces of water; the Water Level Switch is activated and its contacts close. If the water quantity drops below the minimum quantity, the water level switch is no longer activated and the contacts open.
  • Page 33: Grinder Assembly

    CVA615 Coffee System Technical Information 4.11 Grinder Assembly Refer to figure 4-12. The grinding grade depends on the gap between the Grinding Cone and the Grinding Ring. The gap is set via an adjustment Lever fitted to the adjustment ring.
  • Page 34: Grinder Overload Protection

    CVA615 Coffee System Technical Information 4.12 Grinder - Overload Protection If the grinder becomes blocked, a slip coupling interrupts the drive between the motor and the grinder. 1 Grinder motor 2 Carrier 3 Mounting 4 Spring 5 Ball 6 Grinding cone...
  • Page 35 CVA615 Coffee System Technical Information Should the Grinder Cone become blocked the balls are pressed 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...
  • Page 36: Ground Coffee Dispensing

    CVA615 Coffee System Technical Information 4.13 Ground Coffee Dispensing 1. Dispenser lever 2. Switch - Dispensing (1S13) 3. Catch - Switch - Dispensing 4. Catch - Coil - Dispensing 5. Coil - Dispensing (1L1) 6. Spring 7. Actuator 8. Bolt 9.
  • Page 37: Dispenser Switch

    CVA615 Coffee System Technical Information The grinder fills the dispenser container with ground coffee. When the dispenser container is full, the dispensing switch is actuated and the grinder motor is switched off. Figure 4-16: Dispensing Lever To fill the brew unit - the dispensing solenoid is energized twice and the dispenser flap opens twice.
  • Page 38: Brew Unit Drives

    CVA615 Coffee System Technical Information 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...
  • Page 39: Brew Unit Drives

    CVA615 Coffee System Technical Information Refer to figure 4-18. The drive motor (1) is powered by the electronic and turns both the worm gear (3) and the single-stage step-down gear (4). The drive shaft cog gear (5) has two switch actuators for the brew position switch (6) and the home position switch (7).
  • Page 40: Water Pump

    CVA615 Coffee System Technical Information 4.16 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.
  • Page 41: Flow Through Heaters

    CVA615 Coffee System Technical Information 4.19 Flow Through Heaters The Coffee Flow Through Heater (figure 4-19) has a large heater element; and a small heater element. The Steam Flow Heater has only one heater element (refer to figure 4-20) Each Flow Through Heater has a Positive Thermal Coefficient (PTC) Temperature Sensor that provides a signal to the electronic unit for temperature control.
  • Page 42: Steam Heater

    CVA615 Coffee System Technical Information As a final measure each heating circuit uses a temperature safety fuse (Figure 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.
  • Page 43: Water Path

    CVA615 Coffee System Technical Information 4.20 Water Path Water tank Sealing ring Water filter Flow meter Pump Valve - Safety Drain hose - Excess pressure Coffee / Hot Water Heater - Coffee Water Valve (to brew unit) Valve - Steam (solenoid valve)
  • Page 44: Water Intake

    CVA615 Coffee System Technical Information 4.20.1 Water Intake The Pump takes in water from the water tank. (The Pump is fitted with a safety valve which opens at approx. 16 bar (232 psi) system pressure. If the pressure is too high and the safety valve opens, water is drained off via a hose to the drip tray).
  • Page 45: Water Valve

    CVA615 Coffee System Technical Information 4.21 Water Valve The Water Valve is attached to the output of the Coffee / Hot Water Flow Through Heater. The valve is in a normally closed position. When the Brew Unit is driven into the brew position the valve mechanically opens and water is supplied to the Brew Unit.
  • Page 46: Electronic Assemblies

    CVA615 Coffee System Technical Information 4.22 Electronic Assemblies 4.22.1 Power Electronic Figure 4-23: Power Electronic Board...
  • Page 47: Cpu Electronic

    CVA615 Coffee System Technical Information 4.22.2 CPU Electronic Figure 4-24: CPU (Control) Electronic...
  • Page 48 CVA615 Coffee System Technical Information...
  • Page 49: Service And Maintenance

    CVA615 Coffee System Technical Information Service and Maintenance Danger To avoid the risk of electrical shock, the appliance should be disconnected from the power source, before any service procedures are performed. Lid - Removal 1. Remove the Lid Screws, as shown in Figure 5-1.
  • Page 50: Interference Suppression Filter - Removal

    CVA615 Coffee System Technical Information Interference Suppression Filter (Z1) - Removal 1. Perform: Lid removal (5.1). 2. Remove the Mains Filter Nut (Figure 5-2 - Item 1). 3. Remove the Filter. 4. Disconnect the Mains Filter electrical connections Figure 5-2: Interference Suppression Filter (Z1) Mounting Location...
  • Page 51: Adjustment Slide Switch Frame - Removal

    CVA615 Coffee System Technical Information Adjustment Slide Switch Frame - Removal 1. Open the door. 2. Pull off the slide switch knobs. Press the retaining lugs inwards with a small screwdriver (Figure 5-4). Remove the frame. Figure 5-4: Removing the Adjustment Slide Switch Frame (Bezel).
  • Page 52: Door Contact Switch - Removal

    CVA615 Coffee System Technical Information Door Contact Switch (S24) - 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.
  • Page 53: Base Plate - Removal

    CVA615 Coffee System Technical Information Base Plate - Removal Remove the Lid, Mains and Rear Panel (5.1 to 5.3) 2. Open the door. 3. Remove the Waste Container. 4. Remove the Water Tank. 5. Check if water is present in the Drip Tray with a finger through the opening under the water container.
  • Page 54: Drip Tray - Removal

    CVA615 Coffee System Technical Information Drip Tray - Removal 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: Overflow Switch Actuator Float - Removal

    CVA615 Coffee System Technical Information Overflow Switch Actuator Float - Removal 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.
  • Page 56: Overflow Switch - Removal

    CVA615 Coffee System Technical Information Overflow Switch (B8/3) - Removal 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.
  • Page 57: Rear Door Panel - Removal

    CVA615 Coffee System Technical Information 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: Fascia Panel Cover - Removal

    CVA615 Coffee System Technical Information 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 1 - Fascia 2 - Cable guide...
  • Page 59: Selector Switch - Removal

    CVA615 Coffee System Technical Information 5.12 Selector Switch - Removal Refer to figure 5-14. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.10 & 5.11). 3. Unplug the electrical connection from the Selector Switch, 4.
  • Page 60: Display Module Electronic - Removal

    CVA615 Coffee System Technical Information 5.13 Display Module Electronic - Removal Refer to figure 5-15. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.10 & 5.11). 3. Pull off the Pushbutton Knobs (1). 4. Disconnect the Connections from the Electronic (7).
  • Page 61: Coffee Dispensing Nozzle - Removal

    CVA615 Coffee System Technical Information 5.14 Coffee Dispensing Nozzle - Removal Refer to Figure 5-14. 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.
  • Page 62: Coffee Dispensing Nozzle - Installation

    CVA615 Coffee System Technical Information 5.15 Coffee Dispensing Nozzle - Installation Refer to figure 5-14. 1. Slide the outlet (7), onto 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).
  • Page 63: Steam Valve And Steam Valve Switch - Removal

    CVA615 Coffee System Technical Information 5.16 Steam Valve and Steam Valve Switch (S79) – Removal Refer to Figure 5-15. 1. Open the door. 2. Remove the Rear Door Panel and Fascia Panel Cover (5.10 & 5.11). 3. Pull off the Switch Knob (8).
  • Page 64: Hot Water Nozzle - Removal

    CVA615 Coffee System Technical Information 5.17 Hot Water Nozzle – 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. Loosen the nut (2). 4. Remove the holder (5).
  • Page 65: Checking Temperature At Coffee Dispenser

    CVA615 Coffee System Technical Information 5.19 Checking Temperature at Coffee Dispenser Warning To avoid adverse operating conditions: Do Not deviate from the procedure. Do Not change any other settings or values during this procedure. 1. Set the grinding grade to medium.
  • Page 66: Brew Unit - Removal (In Start/Home Position)

    CVA615 Coffee System Technical Information 9. Observe the numeric value in the lower right corner of the display. If a value of “350” is displayed; proceed to step 14. If the value is not 350; proceed to step 10. 10. Press the Small Coffee Button 1 time. A blinking box will appear at the end of numeric value.
  • Page 67: Brew Unit - Removal ( Not In Start/Home Position)

    CVA615 Coffee System Technical Information 5.21 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.
  • Page 68: Brew Unit Connections

    CVA615 Coffee System Technical Information 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 - Installation

    CVA615 Coffee System Technical Information 5.22 Brew Unit - Installation 1. Remove the Waste Container. 2. 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.
  • Page 70: Brew Unit - Filter Cleaning

    CVA615 Coffee System Technical Information 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".
  • Page 71: Brew Unit - Degreasing Via The Rinse Cycle

    "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. 1. Remove the Waste Container. 2. Remove the Brew Unit and put the detergent tablet in the brew unit funnel.
  • Page 72 CVA615 Coffee System Technical Information 8. Press ENTER. The display will read: RINSING CYCLE 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.
  • Page 73: Brew Unit - Lubrication

    CVA615 Coffee System Technical Information 5.26 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. 2. Refer to figure 5-22; lubricate the following:...
  • Page 74: Brew Unit - Manual Reset To Home (Out Of Appliance)

    CVA615 Coffee System Technical Information 5.27 Brew Unit – Manual Reset to “Home Position” with brew unit not installed in appliance) Refer to 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.
  • Page 75: Brew Unit Creamer Valve - Removal

    CVA615 Coffee System Technical Information 5.28 Brew Unit Creamer Valve - Removal 1. Remove the Brew Unit 2. Remove the output fixing screws. 3. Remove the output. 4. Remove the spring and Creamer Valve. 5.29 Brew Unit Handle - Removal 1.
  • Page 76: Brew Unit Funnel - Removal

    CVA615 Coffee System Technical Information 5.30 Brew Unit Funnel - Removal 1. Remove the Brew Unit from the appliance. 2. Press the Funnel 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).
  • Page 77: Brew Unit Ram - Service

    CVA615 Coffee System Technical Information 5.31 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 5-29, Items 1 and 2). Figure 5-29: Releasing the ram from the bottom of the brew unit.
  • Page 78 CVA615 Coffee System Technical Information 6. Clean the brewing chamber (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.
  • Page 79: Brew Unit Drives - Service

    CVA615 Coffee System Technical Information 5.32 Brew Unit Drives – Service 1. Disconnect the power. Allow the appliance to cool. 2. Remove the Brew Unit from the appliance (5.20 or 5.21) 3. Remove the Waste Container from the appliance. 4. Remove the Beans Container (5.38) and Beans Container Guide (5.39)
  • Page 80 CVA615 Coffee System Technical Information 15. Disconnect the Water Intake Connection to the Hot Water / Coffee Heater. 16. Refer to Figure 5-32. Remove the two Hot Water / Coffee Heater Screws; Separate the Heater from its mounting position. 17. Refer to Figure 5-32. Remove the two “Cosmetic Fixing” screws.
  • Page 81: Grinder Retaining Screws

    CVA615 Coffee System Technical Information Figure 5-33: Grinder Retaining Screws Figure 5-34: Grinder Retaining Nuts...
  • Page 82: Upper Front Plate Assembly

    CVA615 Coffee System Technical Information 20. Remove the knobs from the Grinder Slide Controls. 21. Remove the Adjustment Slide Switch Frame (5.4). 22. Position the Grinder as necessary to access the Drive Cover and Drive Unit Retaining Screws. Refer to Figure 5-34 for the location of the screws.
  • Page 83 CVA615 Coffee System Technical Information Service Tip Refer to Figure 5-36. To avoid having to hold the Front Plate Assembly upward while removing the lower screws; a suitable item can be used to temporarily keep the Front Plate Assembly in an elevated position.
  • Page 84: Water Tank Float - Removal

    CVA615 Coffee System Technical Information 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: Water Tank Lip Seal - Removal

    CVA615 Coffee System Technical Information 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).
  • Page 86: Lower Section Of Tank Valve - Removal

    CVA615 Coffee System Technical Information 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).
  • Page 87 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: Beans Container - Removal

    CVA615 Coffee System Technical Information 5.36 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.
  • Page 89: Beans Container Guide - Removal

    CVA615 Coffee System Technical Information 5.37 Beans Container Guide - Removal 1. Open the door. 2. Perform the “Beans container removal” procedure (5.39). 3. 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).
  • Page 90: Grinder - Disassembly

    CVA615 Coffee System Technical Information 5.38 Grinder - Disassembly Note The Grinder Ring, and Grinder Cone should only be replaced as a set. 1. Open the door. 2. Remove the Beans Container (5.39). 3. Remove the Waste Container, Brew Unit and Water Tank.
  • Page 91 CVA615 Coffee System Technical Information 9. Turn the Adjustment Ring (Figure 5-45, Item 1), counterclockwise until the blue marking aligns with the blue marking on the carrier (Figure 5-45, Item 2). Figure 5-45: Grinder; (1) Adjustment Ring (2) Carrier (3) Bracket.
  • Page 92: Grinder

    CVA615 Coffee System Technical Information 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).
  • Page 93: Grinder Assembly - Basic Setting

    CVA615 Coffee System Technical Information 5.39 Grinder Assembly - Basic Setting Refer to Figure 5-47. Note The Grinder Ring (6), and Grinder Cone, (6), should be replaced together. 1. Install the Felt Ring (11). 2. Install the carriers (10). 3. Install the mounting (7).
  • Page 94: Grinder Unit - Removal

    CVA615 Coffee System Technical Information 5.40 Grinder Unit - Removal 1. Open the door. 2. Remove the Beans Container (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).
  • Page 95: Grinder Coupling

    CVA615 Coffee System Technical Information 10. Remove the plug from the electronic unit. 11. Lift the grinder 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.
  • Page 96: Dispensing Solenoid - Removal

    CVA615 Coffee System Technical Information 5.41 Dispensing Solenoid - Removal Remove the Top Lid (5.1). Remove the Rear Panel (5.3). Remove the Beans Container (5.39). 4. Remove the Beans Container Guide (5.40). 5. Press the retainers outward. 6. Slide the Dispensing Solenoid upward out of the guide.
  • Page 97: Waterpath & Flowmeter - Testing

    CVA615 Coffee System Technical Information 5.43 Waterpath & Flowmeter - Testing Caution Hot water will flow from the water spout during this procedure 1. Fill the water reservoir 2. Place the appliance into the Service Mode with the Selector Knob in the Programming position. (refer to section 6 for further information on service mode access) 3.
  • Page 98: Test Jumper Position

    CVA615 Coffee System Technical Information Figure 5-49: Test Jumper Position 4. Release all three coffee buttons. 5. Remove the jumper and reconnect JP25 6. Press and hold all three coffee buttons. Observe the number displayed in the bottom right of the display (see figure 5-50).
  • Page 99: Water Path Leakage Test

    CVA615 Coffee System Technical Information 5.44 Water Path Leakage Test In the event water is present in bottom of the appliance, or a leak is suspected; the following procedure will help in locating the source of the leak. Caution Heaters can be hot during this test and hot water may escape from the system 1.
  • Page 100: Water Path Connections - Opening

    CVA615 Coffee System Technical Information 5.45 Water Path Connections - Opening Danger! Risk of burning or scalding! Components may be hot. Pressurized steam may exist in the system. Before any service work is performed, allow time to cool. Refer to Figure 5-51.
  • Page 101: Fault Diagnosis

    CVA615 Coffee System Technical Information Fault Diagnosis Programming Mode The Programming Mode is designed for access by the customer to for changes various setting and change features. To access the Programming Mode, simply turn the selector knob to the “Program Mode”...
  • Page 102: Service Mode

    CVA615 Coffee System Technical Information 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. Initial requirements • Switch off the appliance •...
  • Page 103: Service Mode Navigation

    CVA615 Coffee System Technical Information Service Mode - Navigation Displays Water Temperature for Large Coffee Water Heater and Steam Heater in Celsius. LOCK Med Coffee Displays firmware version Small Coffee (not used) Hot Water (not used) Rinse (not used) Large Coffee...
  • Page 104: Displayed Messages

    CVA615 Coffee System Technical Information 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 –...
  • Page 105 CVA615 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.
  • Page 106: Fault Diagnosis

    CVA615 Coffee System Technical Information Fault Diagnosis When two cups of coffee/espresso are being prepared at the same time, the cups are filled unevenly. Appliance is not level. - Level the appliance. Coffee nozzle is dirty. - Clean the coffee nozzle.
  • Page 107 CVA615 Coffee System Technical Information Grinding grade cannot be set finer (adjustment lever appears jammed) Ground coffee is between the grinding ring and grinding cone. The ground coffee prevents the gap between the grinding ring and grinding cone from being reduced.
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  • Page 109: Wiring Diagram

    CVA615 Coffee System Technical Information Wiring Diagram...
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