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Miele CVA615 manual Refer to -18– Brew Unit Drive Assembly

Models: CVA615

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Refer to Figure 4-18 – Brew Unit Drive Assembly.

CVA615 Coffee System

Technical Information

Refer to Figure 4-18 – Brew Unit Drive Assembly.

The drive motor (Item 1) is powered by the electronic and turns both the worm gear (Item 3) and the single-stage step-down gear (Item 4). The drive shaft cog gear (Item 5) has two switch actuators for the brew position switch (Item 6) and the home position switch (Item 7). Both switches are monitored by the electronic to determine the position of the brew unit.

1Drive Motor

2Brew Unit Present Switch

3Worm Gear

4Step Down Gear

5Drive Shaft Cog Gear

6Brew Position Switch

7Home (Start) Position Switch

Figure 4-18:Brew Unit Drive Assembly

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Image 38

Miele CVA615 manual Refer to -18– Brew Unit Drive Assembly

Contents

TECHNICAL INFORMATION CVA615 Coffee System 2007 Miele USACVA615 Coffee System – Table of Contents Service and Maintenance Fault Diagnosis CVA615 Coffee System – List of Figures CVA615 Coffee System – List of Figures continued CVA615 Coffee System – List of Figures continued Figure 5-43:Beans Container GuideCVA615 Coffee System CVA615 Coffee System – List of TablesTable 6-2:Service Mode Navigation Technical Information2Coffee Dispensers Height-Adjustable 1.0Construction and Design1.1Appliance Overview CVA615 Coffee System Technical InformationCVA615 Coffee System Technical Information 1.1.2Controls1.1.3Interior Front of Appliance Opened Figure 1-2: CVA ControlsElectrical Information 1.2Technical DataProduct Dimensions CVA615 Coffee System Technical Information7Drive Assembly Cover 8Hot Water / Coffee Heater 1.3Layout of Components6Drive Assembly Mounted to Wall 12Steam Solenoid Valve 13Power Electronic BoardFigure 2-1: Operating Manual 2.0InstallationCVA615 Coffee System Technical Information 3.0Commission and Operation 3.1General Operation3.1.3Steam Control 3.1.2Canceling the PreparationFigure 3-4: Canceling the Preparation Process Figure 3-5: Steam Selector3.1.4Hot Water 3.1.5Adjusting the Coffee Grinder Controls3.1.6Filling the Coffee Beans Container 3.1.7Filling the Water Tank 4.0Description of Function 4.1Door Switch4.2Overflow Reed Switch Figure 4-2: Brew Unit in “Home” Position 4.3Brew Unit – Cleaning and Care4.4Brew Unit Removal from the Appliance 4.5Connection of Brew Unit to Drive Mechanism Operation4.6Brewing Procedure 1Outlet 2Top Filter 3Compressed Coffee CVA615 Coffee System Technical InformationFigure 4-5: Brew Unit Components 4Water Nozzle Socket 5Bottom FilterRefer to Figure 4-6– Brew Unit, Showing Compressed Coffee “Puck” Figure 4-7: Waste Unit Present Switch 4.8Waste Unit Present Switch4.7Grounds Container Figure 4-8: Waste Unit 1 Magnet for Present Switch ActuationCVA615 Coffee System Technical Information 4.9Water Tank Figure 4-11: Water Level Switch Float 4.10Water Level SwitchFigure 4-10: Water Level Switch When the water tank is installed, and contains at least 30-33ounces of water; the Water Level Switch is activated and its contacts close CVA615 Coffee System Technical Information 4.11Grinder AssemblyFigure 4-12: Grinder Assembly Refer to Figure 4-12– Grinder Assembly 1Grinder Motor 2Carrier 3Mounting 4Spring 5Ball 4.12Grinder – Overload ProtectionCVA615 Coffee System Technical Information 6Grinding Cone 7Washer 8Intake Worm GearANormal Operation BOverload Protection Activated CForce Transfer Interrupted4.13Ground Coffee Dispensing Figure 4-15: Coffee Dispensing Components4.14Dispenser Switch 4Switch – Brew Unit Present Switch 4.15Brew Unit Drives3Locking Mechanism Switch Lug 1Brew Unit Drive Shaft Socket 2SocketRefer to Figure 4-18– Brew Unit Drive Assembly 4.18Heaters 4.16Water Pump4.17Flow Meter Coffee / Hot Water Heater 1R1 & 1R24.19Flow Through Heaters Figure 4-19: Hot Water / Coffee Heater1Heater Element 2Thermal Fuse 3Thermostat CVA615 Coffee System Technical InformationFigure 4-20: Steam Heater 4Temperature Sensor PTCFigure 4-21: Water Path 4.20Water PathCVA615 Coffee System Technical Information 4.20.3Water Path – Hot Water 4.20.1Water Intake4.20.2Water Path - Coffee 4.20.4Water Path – Steam4.21Water Valve Figure 4-22: Water Valve DisassembledCVA615 Coffee System Technical Information 4.22Electronic Assemblies4.22.1Power Electronic Figure 4-24: CPU Control Electronic 4.22.2CPU ElectronicCVA615 Coffee System Technical Information CVA615 Coffee System Technical Information 5.0Service and Maintenance5.1Lid - Removal 5.2Interference Suppression Filter Z1 - Removal 5.3Rear Panel - Removal4.Remove the frame 5.4Adjustment Slide Switch Frame - Removal1.Open the door 2.Pull off the slide switch knobs CVA615 Coffee System Technical Information3.Disconnect the Door Switch Connections 5.5Door Contact Switch S24 - RemovalRefer to Figure 5-5– Door Switch 5.Remove the Door Switch to the front5.6Base Plate - Removal 3.Remove the Drip Tray - Refer to Figure 5.7Drip Tray - Removal2.Remove the Base Plate – Refer to Section CVA615 Coffee System Technical Information2.Remove the Base Plate - Refer to Section 5.8Overflow Switch Actuator Float - Removal1Overflow Switch Float 3. Remove the float3.Remove the Overflow Switch 5.9Overflow Switch B8/3 - Removal2.Remove the Overflow Switch Fixing Screw Item CVA615 Coffee System Technical Information2.Remove the Upper Rear Panel Fixing Screws Item 5.10Rear Door Panel - Removal1.Open the door 3.Remove the Lower Rear Panel Fixing Screws Item2.Remove the Rear Door Panel – Refer to Section 5.11Fascia Panel Cover - Removal1.Open the door 3.Remove the Cover Fixing Screws Item5.12Selector Switch - Removal 5.13Display Module Electronic - Removal 5.14Coffee Dispensing Nozzle - Removal 5.15Coffee Dispensing Nozzle - Installation 1.Open the door 5.17Hot Water Nozzle - Removal 5.18Hot Water Valve Y12 - Removal5.19Checking Temperature at Coffee Dispenser 5.20Brew Unit – Removal in Start/Home Position 5.21Brew Unit – Removal NOTin Start/Home Position 1Connection Socket 2Retaining Screw CVA615 Coffee System Technical InformationFigure 5-17: Brew Unit 5.22Brew Unit - Installation 5.23Brew Unit – Cleaning Procedure5.24Brew Unit – Filter Cleaning 5.25Brew Unit – Degreasing via the Rinse Cycle RINSING RINSING CYCLERINSING CYCLE SELECT PRODUCT READY FOR USE5.26Brew Unit - Lubrication Refer to Figure 5.28Brew Unit Creamer Valve - Removal 5.29Brew Unit Handle - Removal5.30Brew Unit Funnel - Removal 5.31Brew Unit Ram - Service 1Filter Screw 2Filter 3Lubrication Points Figure 5-31: Ram AssemblyCVA615 Coffee System Technical Information 5.32Brew Unit Drives - Service 16.Refer to Figure 5-32– Front Plate Assembly with Retaining Screws Locations. Remove the two Hot Water / Coffee Heater Screws; Separate the Heater from its mounting position Figure 5-34: Grinder Retaining Nuts CVA615 Coffee System Technical InformationFigure 5-33: Grinder Retaining Screws 21.Remove the Adjustment Slide Switch Frame Service Tip 3.Remove the cap from the Water Tank 5.33Water Tank Float - Removal1.Open the door 2.Remove the Water Tank 4.Remove the Water Tank Float2.Remove the Water Tank – Refer to Section 5.34Water Tank Lip Seal - Removal1.Open the door 3.Lever off the Lip Seal Cap2.Remove the Water Tank – Refer to Section 5.35Lower Section of Tank Valve - Removal1.Open the door 3.Remove the Lip Seal Refer to FigureCVA615 Coffee System Technical Information 5.Remove the Bottom Plate and Drip Tray7.Remove the lower part of the valve CVA615 Coffee System Technical Information 5.36Beans Container - Removal1.Open the door 5.37Beans Container Guide - Removal 5.38Grinder - Disassembly 10.Remove the bracket Figure 5-45,Item Refer to Figure 5-46– Grinder – Apart 5.39Grinder Assembly – Basic Setting 5.40Grinder Unit - Removal 5.42Dispenser Switch - Removal 5.41Dispensing Solenoid - Removal5.43Waterpath & Flowmeter - Testing 5678 344.Release all three coffee buttons 5.44Water Path Leakage Test 5.45Water Path Connections - Opening 5.46Water Path Connections - Closing6.0Fault Diagnosis 6.1Programming ModeAcknowledgement Indicator 6.2Service ModeAccess Initial requirementsService Mode - Navigation CVA615 Coffee System Technical InformationDisplayed Message 6.3Displayed MessagesCVA615 Coffee System Technical Information InformationTechnical Information The level switch has been actuated by water beingCVA615 Coffee System Displayed MessageBrew Unit cannot be removed from the appliance 6.4Fault DiagnosisBrew Unit cannot be installed Perform the following