Table of Contents27 Service and Maintenance .......................................................................... 707.1 Checking/calibrating the KS1-DK combination probe.............................................................707.2 Checking the LT 2/KS1-DK.....................................................................................................717.3 Maintenance ...........................................................................................................................728 Fault Analysis/Trouble-shooting .............................................................. 758.1 Fault indicator via LED line in the LT 2/KS1-DK .....................................................................758.2 Warning indicator via LED line in the LT 2/KS1-DK ...............................................................788.3 Resetting faults/warnings........................................................................................................829 Spare Parts ................................................................................................. 839.1 Wearing parts..........................................................................................................................839.2 Spare parts .............................................................................................................................8410 Appendix..................................................................................................... 8610.1 Technical data of the LT 2/KS1-DK lambda transmitter .........................................................8610.2 Technical data of the KS1-DK combination probe..................................................................8910.3 Electrical connection ...............................................................................................................9010.4 Pneumatic connection.............................................................................................................9310.5 Electrical connection to field bus module................................................................................9410.6 Fuses ......................................................................................................................................9510.7 Jumpers ..................................................................................................................................9610.8 Dimension drawing of KS1-DK combination probe ................................................................9710.9 Dimension drawing of LT 2/KS1-DK in wall-mounted housing ...............................................9810.10 Dimension drawing of LT 2/KS1-DK on mounting plate .........................................................9910.11 Dimension drawing of display and operating unit for panel installation................................10010.12 Wet/dry measurement – deviation, conversion table............................................................10111 EC Declaration of Conformity ................................................................. 10211.1 LT 2/KS1-DK lambda transmitter..........................................................................................102