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Miele CVA615 manual 4.3Brew Unit – Cleaning and Care, 4.4Brew Unit Removal from the Appliance

Models: CVA615

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4.3Brew Unit – Cleaning and Care

CVA615 Coffee System

Technical Information

4.3Brew 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. Refer to Section 5.0 – Service and Maintenance for further information and procedures.

4.4Brew Unit Removal from the Appliance

The brew unit must be in the home position (refer to Figure 4-2) before it can be removed from the appliance.

Figure 4-2:Brew Unit in “Home” Position

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Miele CVA615 4.3Brew Unit – Cleaning and Care, 4.4Brew Unit Removal from the Appliance, 2: Brew Unit in “Home” Position

Contents

2007 Miele USA TECHNICAL INFORMATION CVA615 Coffee SystemCVA615 Coffee System – Table of Contents Service and Maintenance Fault Diagnosis CVA615 Coffee System – List of Figures CVA615 Coffee System – List of Figures continued Figure 5-43:Beans Container Guide CVA615 Coffee System – List of Figures continuedTable 6-2:Service Mode Navigation CVA615 Coffee System – List of TablesTable 6-1:Programming Mode Navigation CVA615 Coffee System1.1Appliance Overview 1.0Construction and Design2Coffee Dispensers Height-Adjustable CVA615 Coffee System Technical Information1.1.3Interior Front of Appliance Opened 1.1.2ControlsCVA615 Coffee System Technical Information Figure 1-2: CVA ControlsProduct Dimensions 1.2Technical DataElectrical Information CVA615 Coffee System Technical Information6Drive Assembly Mounted to Wall 1.3Layout of Components7Drive Assembly Cover 8Hot Water / Coffee Heater 12Steam Solenoid Valve 13Power Electronic Board2.0Installation CVA615 Coffee System Technical InformationFigure 2-1: Operating Manual 3.1General Operation 3.0Commission and OperationFigure 3-4: Canceling the Preparation Process 3.1.2Canceling the Preparation3.1.3Steam Control Figure 3-5: Steam Selector3.1.4Hot Water Controls 3.1.5Adjusting the Coffee Grinder3.1.6Filling the Coffee Beans Container 3.1.7Filling the Water Tank 4.1Door Switch 4.2Overflow Reed Switch4.0Description of Function 4.3Brew Unit – Cleaning and Care 4.4Brew Unit Removal from the ApplianceFigure 4-2: Brew Unit in “Home” Position Operation 4.5Connection of Brew Unit to Drive Mechanism4.6Brewing Procedure Figure 4-5: Brew Unit Components CVA615 Coffee System Technical Information1Outlet 2Top Filter 3Compressed Coffee 4Water Nozzle Socket 5Bottom FilterRefer to Figure 4-6– Brew Unit, Showing Compressed Coffee “Puck” 4.8Waste Unit Present Switch 4.7Grounds ContainerFigure 4-7: Waste Unit Present Switch 1 Magnet for Present Switch Actuation CVA615 Coffee System Technical InformationFigure 4-8: Waste Unit 4.9Water Tank 4.10Water Level Switch Figure 4-10: Water Level SwitchFigure 4-11: Water Level Switch Float When the water tank is installed, and contains at least 30-33ounces of water; the Water Level Switch is activated and its contacts close 4.11Grinder Assembly Figure 4-12: Grinder AssemblyCVA615 Coffee System Technical Information Refer to Figure 4-12– Grinder Assembly CVA615 Coffee System Technical Information 4.12Grinder – Overload Protection1Grinder Motor 2Carrier 3Mounting 4Spring 5Ball 6Grinding Cone 7Washer 8Intake Worm GearCForce Transfer Interrupted ANormal Operation BOverload Protection ActivatedFigure 4-15: Coffee Dispensing Components 4.13Ground Coffee Dispensing4.14Dispenser Switch 3Locking Mechanism Switch Lug 4.15Brew Unit Drives4Switch – Brew Unit Present Switch 1Brew Unit Drive Shaft Socket 2SocketRefer to Figure 4-18– Brew Unit Drive Assembly 4.17Flow Meter 4.16Water Pump4.18Heaters Coffee / Hot Water Heater 1R1 & 1R2Figure 4-19: Hot Water / Coffee Heater 4.19Flow Through HeatersCVA615 Coffee System Technical Information 4Temperature Sensor PTCFigure 4-20: Steam Heater 1Heater Element 2Thermal Fuse 3Thermostat4.20Water Path CVA615 Coffee System Technical InformationFigure 4-21: Water Path 4.20.2Water Path - Coffee 4.20.1Water Intake4.20.3Water Path – Hot Water 4.20.4Water Path – SteamFigure 4-22: Water Valve Disassembled 4.21Water Valve4.22Electronic Assemblies 4.22.1Power ElectronicCVA615 Coffee System Technical Information 4.22.2CPU Electronic CVA615 Coffee System Technical InformationFigure 4-24: CPU Control Electronic 5.0Service and Maintenance 5.1Lid - RemovalCVA615 Coffee System Technical Information 5.3Rear Panel - Removal 5.2Interference Suppression Filter Z1 - Removal1.Open the door 2.Pull off the slide switch knobs 5.4Adjustment Slide Switch Frame - Removal4.Remove the frame CVA615 Coffee System Technical InformationRefer to Figure 5-5– Door Switch 5.5Door Contact Switch S24 - Removal3.Disconnect the Door Switch Connections 5.Remove the Door Switch to the front5.6Base Plate - Removal 2.Remove the Base Plate – Refer to Section 5.7Drip Tray - Removal3.Remove the Drip Tray - Refer to Figure CVA615 Coffee System Technical Information1Overflow Switch Float 5.8Overflow Switch Actuator Float - Removal2.Remove the Base Plate – Refer to Section 3. Remove the float2.Remove the Overflow Switch Fixing Screw Item 5.9Overflow Switch B8/3 - Removal3.Remove the Overflow Switch CVA615 Coffee System Technical Information1.Open the door 5.10Rear Door Panel - Removal2.Remove the Upper Rear Panel Fixing Screws Item 3.Remove the Lower Rear Panel Fixing Screws Item1.Open the door 5.11Fascia Panel Cover - Removal2.Remove the Rear Door Panel – Refer to Section 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 5.18Hot Water Valve Y12 - Removal 5.17Hot Water Nozzle - Removal5.19Checking Temperature at Coffee Dispenser 5.20Brew Unit – Removal in Start/Home Position 5.21Brew Unit – Removal NOTin Start/Home Position CVA615 Coffee System Technical Information Figure 5-17: Brew Unit1Connection Socket 2Retaining Screw 5.23Brew Unit – Cleaning Procedure 5.22Brew Unit - Installation5.24Brew Unit – Filter Cleaning RINSING RINSING CYCLE 5.25Brew Unit – Degreasing via the Rinse CycleSELECT PRODUCT READY FOR USE RINSING CYCLE5.26Brew Unit - Lubrication Refer to Figure 5.29Brew Unit Handle - Removal 5.28Brew Unit Creamer Valve - Removal5.30Brew Unit Funnel - Removal 5.31Brew Unit Ram - Service Figure 5-31: Ram Assembly CVA615 Coffee System Technical Information1Filter Screw 2Filter 3Lubrication Points 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 CVA615 Coffee System Technical Information Figure 5-33: Grinder Retaining ScrewsFigure 5-34: Grinder Retaining Nuts 21.Remove the Adjustment Slide Switch Frame Service Tip 1.Open the door 2.Remove the Water Tank 5.33Water Tank Float - Removal3.Remove the cap from the Water Tank 4.Remove the Water Tank Float1.Open the door 5.34Water Tank Lip Seal - Removal2.Remove the Water Tank – Refer to Section 3.Lever off the Lip Seal Cap1.Open the door 5.35Lower Section of Tank Valve - Removal2.Remove the Water Tank – Refer to Section 3.Remove the Lip Seal Refer to Figure5.Remove the Bottom Plate and Drip Tray 7.Remove the lower part of the valveCVA615 Coffee System Technical Information 5.36Beans Container - Removal 1.Open the doorCVA615 Coffee System Technical Information 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 5.41Dispensing Solenoid - Removal 5.42Dispenser Switch - Removal5678 34 5.43Waterpath & Flowmeter - Testing4.Release all three coffee buttons 5.44Water Path Leakage Test 5.46Water Path Connections - Closing 5.45Water Path Connections - Opening6.1Programming Mode 6.0Fault DiagnosisAccess 6.2Service ModeAcknowledgement Indicator Initial requirementsCVA615 Coffee System Technical Information Service Mode - NavigationCVA615 Coffee System Technical Information 6.3Displayed MessagesDisplayed Message InformationCVA615 Coffee System The level switch has been actuated by water beingTechnical Information Displayed Message6.4Fault Diagnosis Brew Unit cannot be installedBrew Unit cannot be removed from the appliance Perform the following