
Technical Information
3
CVA 4062/CVA 4066/CVA 4068 Coffee Systems
4.2Dispenser Present Switch (S87/6) Removal................................................. 33
4.3Dispensing Area Light (1H3, 2H3) Removal ................................................. 33
4.4Door Removal............................................................................................... 33
030Drive, Brew Unit.................................................................................................35
2Function............................................................................................................... 36
2.1Brew Unit Control ......................................................................................... 36
2.1.1Microswitch Locations .............................................................................36
2.1.2Electronic Grind Amount Compensation .................................................36
2.1.3Brew Unit Drive, Home Position ..............................................................38
2.1.4Brew Unit Drive, Compressing Position (Brew Position).........................39
2.1.5Brew Unit Drive, Drain Position ...............................................................39
3Fault Repair......................................................................................................... 40
3.1Coffee Grounds Next to the Brew Unit ......................................................... 40
4Service ................................................................................................................ 41
4.1Brew Unit Drive (M26) Removal ................................................................... 41
4.2Removing the Grind Amount Compensation Microswitch (S51/4) ................ 43
4.3Removing the Brew Unit Position Microswitches (S60/1, S60/2).................. 43
040Grinder ...............................................................................................................45
2Function............................................................................................................... 46
2.1Adjusting the Grinder Setting........................................................................ 46
2.2Filling Ground Coffee.................................................................................... 46
4Service ................................................................................................................ 46
4.1Grinder (M25) Removal ................................................................................ 46
050Flow-Thru Heaters.............................................................................................50
2Function............................................................................................................... 51
2.1Steam System .............................................................................................. 51
4Service ................................................................................................................ 51
4.1Removing the Coffee/Hot Water Heater (2R1) ............................................. 51
4.2Removing the Temperature Limiter, Fuse, Temperature Sensor from the
Coffee/Hot-Water Heater.............................................................................. 53
4.3Removing the Steam Heater (1R1) .............................................................. 54
4.4Removing the Temperature Limiter, Temperature Sensor, Fuse from the
Steam Heater ............................................................................................... 56
051Pumps, Solenoids, Flow Meters ......................................................................57
2Function............................................................................................................... 58
2.1Water Paths.................................................................................................. 58
2.1.1Overview..................................................................................................58
2.1.2 Water Path – Coffee ................................................................................59
2.1.3 Water Path – Hot Water ..........................................................................59
2.1.4 Water Path – Hot Milk..............................................................................60
2.1.5 Water Path – Milk Froth...........................................................................61
4Service ................................................................................................................ 62
4.1Hot-Water Solenoid (Y61) Removal ............................................................. 62
4.2Rinsing Solenoid (Y62) Removal.................................................................. 64
4.3Coffee/Hot Water Pump (2M7) Removal ...................................................... 66
4.4Steam Pump (1M7) Removal ....................................................................... 68
4.5Flow Meter (B3/4) Removal .......................................................................... 69
4.6Decompression Vessel Removal.................................................................. 71
4.7Ceramic Valve Removal ............................................................................... 71
060Containers, Drip Tray, Accessories.................................................................73