Replacing the Primo fuse...................................................................................................................... 126
Replacing the external fan .................................................................................................................... 131
Replacing the internal fan ..................................................................................................................... 134
Replacing other components ................................................................................................................ 146
Safety inspection........................................................................................................................................ 149
Safety Inspection .................................................................................................................................. 149
Responsibility........................................................................................................................................ 149
Scope of Application ............................................................................................................................. 149
Measuring Instruments ......................................................................................................................... 149
Visual inspection ........................................................................................................................................ 151
General ................................................................................................................................................. 151
Housing and Covers ............................................................................................................................. 151
Electrical Tests........................................................................................................................................... 152
Insulation Resistance............................................................................................................................ 152
Ground conductor discharge................................................................................................................. 153
Ground conductor current ..................................................................................................................... 154
Contact Current..................................................................................................................................... 155
Finally......................................................................................................................................................... 157
General ................................................................................................................................................. 157
Visual Inspection................................................................................................................................... 157
Functional tests.......................................................................................................................................... 158
Function ................................................................................................................................................ 158
Grid switch-on/off devices..................................................................................................................... 158
Documentation........................................................................................................................................... 159
Documentation...................................................................................................................................... 159
84
147
161