WMF espresso Service Manual page 5

Table of contents
2.11 Grinders - idle current calibration .................................................................................................................................................................................................................................... 17
2.12 Grinders - grinding degree setting ................................................................................................................................................................................................................................... 18
2.13 Admixture calibration for proportional valve ............................................................................................................................................................................................................... 19
2.14 Brewing time monitoring .................................................................................................................................................................................................................................................... 20
2.15 Front panel ............................................................................................................................................................................................................................................................................... 21
2.16 Safety valve - Procedure for performing a functional check ................................................................................................................................................................................... 24
3 Maintenance concept ...................................................................................................................................................................................................................... 25
3.1 Overview of maintenance activities ................................................................................................................................................................................................................................. 25
3.1.1 Installation of maintenance packages required for different brewing times ...................................................................................................................................................... 26
3.2 Maintenance packages ......................................................................................................................................................................................................................................................... 27
3.3 Descaling - Preliminary ........................................................................................................................................................................................................................................................ 29
3.4 Pressure release routine ....................................................................................................................................................................................................................................................... 30
3.5 Boiler pressure check ............................................................................................................................................................................................................................................................ 30
3.6 Special tools and aids ........................................................................................................................................................................................................................................................... 31
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