4.21Water Valve, 22: Water Valve Disassembled | Miele CVA615

4.21Water Valve

CVA615 Coffee System

Technical Information

4.21Water 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. 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.

The Water Valve can be disassembled for service; parts can be replaced individually.

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Miele CVA615 manual 4.21Water Valve, 22: Water Valve Disassembled

Contents

TECHNICAL INFORMATION CVA615 Coffee System 2007 Miele USA CVA615 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 Tables Table 6-2:Service Mode NavigationCVA615 Coffee System Technical Information 1.0Construction and Design 1.1Appliance Overview2Coffee Dispensers Height-Adjustable 1Hot Water Dispenser Figure 1-2: CVA Controls 1.1.2Controls1.1.3Interior Front of Appliance Opened Electrical Information 1.2Technical DataProduct Dimensions 1.3Layout of Components 6Drive Assembly Mounted to Wall7Drive Assembly Cover 8Hot Water / Coffee Heater 12Steam Solenoid Valve 13Power Electronic Board 2.0Installation Figure 2-1: Operating Manual 3.0Commission and Operation 3.1General Operation 3.1.2Canceling the Preparation Figure 3-4: Canceling the Preparation Process3.1.3Steam Control Figure 3-5: Steam Selector 3.1.4Hot Water 3.1.5Adjusting the Coffee Grinder Controls 3.1.6Filling 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 Operation 4.6Brewing Procedure 4Water Nozzle Socket 5Bottom Filter Figure 4-5: Brew Unit Components1Outlet 2Top Filter 3Compressed Coffee Refer to Figure 4-6– Brew Unit, Showing Compressed Coffee “Puck” Figure 4-7: Waste Unit Present Switch 4.8Waste Unit Present Switch4.7Grounds Container 1 Magnet for Present Switch Actuation Figure 4-8: Waste Unit 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 4.11Grinder Assembly Figure 4-12: Grinder Assembly Refer to Figure 4-12– Grinder Assembly 6Grinding Cone 7Washer 8Intake Worm Gear 4.12Grinder – Overload Protection1Grinder Motor 2Carrier 3Mounting 4Spring 5Ball ANormal Operation BOverload Protection Activated CForce Transfer Interrupted 4.13Ground Coffee Dispensing Figure 4-15: Coffee Dispensing Components 4.14Dispenser Switch 4.15Brew Unit Drives 3Locking Mechanism Switch Lug4Switch – Brew Unit Present Switch 1Brew Unit Drive Shaft Socket 2Socket Refer to Figure 4-18– Brew Unit Drive Assembly 4.16Water Pump 4.17Flow Meter4.18Heaters Coffee / Hot Water Heater 1R1 & 1R2 4.19Flow Through Heaters Figure 4-19: Hot Water / Coffee Heater 4Temperature Sensor PTC Figure 4-20: Steam Heater1Heater Element 2Thermal Fuse 3Thermostat 4.20Water Path Figure 4-21: Water Path 4.20.1Water Intake 4.20.2Water Path - Coffee4.20.3Water Path – Hot Water 4.20.4Water Path – Steam 4.21Water Valve Figure 4-22: Water Valve Disassembled 4.22Electronic Assemblies 4.22.1Power Electronic 4.22.2CPU Electronic Figure 4-24: CPU Control Electronic 5.0Service and Maintenance 5.1Lid - Removal 5.2Interference Suppression Filter Z1 - Removal 5.3Rear Panel - Removal 4.Remove the frame 5.4Adjustment Slide Switch Frame - Removal1.Open the door 2.Pull off the slide switch knobs 5.5Door Contact Switch S24 - Removal Refer to Figure 5-5– Door Switch3.Disconnect the Door Switch Connections 5.Remove the Door Switch to the front 5.6Base Plate - Removal 3.Remove the Drip Tray - Refer to Figure 5.7Drip Tray - Removal2.Remove the Base Plate – Refer to Section 5.8Overflow Switch Actuator Float - Removal 1Overflow Switch Float3. Remove the float 2Magnet Inside of the Float 3.Remove the Overflow Switch 5.9Overflow Switch B8/3 - Removal2.Remove the Overflow Switch Fixing Screw Item 5.10Rear Door Panel - Removal 1.Open the door2.Remove the Upper Rear Panel Fixing Screws Item 3.Remove the Lower Rear Panel Fixing Screws Item 5.11Fascia Panel Cover - Removal 2.Remove the Rear Door Panel – Refer to Section3.Remove the Cover Fixing Screws Item 4.Remove the cover 5.12Selector 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 - Removal 5.19Checking Temperature at Coffee Dispenser 5.20Brew Unit – Removal in Start/Home Position 5.21Brew Unit – Removal NOTin Start/Home Position Figure 5-17: Brew Unit 1Connection Socket 2Retaining Screw 5.22Brew Unit - Installation 5.23Brew Unit – Cleaning Procedure 5.24Brew Unit – Filter Cleaning 5.25Brew Unit – Degreasing via the Rinse Cycle RINSING RINSING CYCLE RINSING CYCLE SELECT PRODUCT READY FOR USE 5.26Brew Unit - Lubrication Refer to Figure 5.28Brew Unit Creamer Valve - Removal 5.29Brew Unit Handle - Removal 5.30Brew Unit Funnel - Removal 5.31Brew Unit Ram - Service Figure 5-31: Ram Assembly 1Filter 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 Figure 5-33: Grinder Retaining Screws Figure 5-34: Grinder Retaining Nuts 21.Remove the Adjustment Slide Switch Frame Service Tip 5.33Water Tank Float - Removal 1.Open the door 2.Remove the Water Tank3.Remove the cap from the Water Tank 4.Remove the Water Tank Float 5.34Water Tank Lip Seal - Removal 2.Remove the Water Tank – Refer to Section3.Lever off the Lip Seal Cap 4.Remove the Lip Seal 5.35Lower Section of Tank Valve - Removal 3.Remove the Lip Seal Refer to Figure 5.Remove the Bottom Plate and Drip Tray 7.Remove the lower part of the valve 5.36Beans Container - Removal 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 - Removal 5.43Waterpath & Flowmeter - Testing 5678 34 4.Release all three coffee buttons 5.44Water Path Leakage Test 5.45Water Path Connections - Opening 5.46Water Path Connections - Closing 6.0Fault Diagnosis 6.1Programming Mode 6.2Service Mode AccessAcknowledgement Indicator Initial requirements Service Mode - Navigation Information 6.3Displayed MessagesDisplayed Message The level switch has been actuated by water being Brew Unit cannot be removed from the appliance 6.4Fault DiagnosisBrew Unit cannot be installed Perform the following