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