User Manual

1 Contents
2
1 Contents
1 Contents ........................................................................ 2
2 Observe prior to use! ................................................... 3
3 Safety instructions ....................................................... 3
4 Intended use ................................................................. 3
5 Technical data .............................................................. 4
6 Overview ....................................................................... 6
6.1. Display and control elements ........................... 6
6.2. Explanation of icons ......................................... 7
7 Operating the instrument ............................................ 7
7.1. Switching the instrument on ............................. 7
7.2. Switching measuring point illumination on/off .. 7
7.3. Switching the instrument off ............................. 8
8 Carrying out a test ....................................................... 8
8.1. Preparing the test ............................................. 8
8.2. Voltage testing ................................................. 8
8.3. Single pole phase testing (only testo 755-2) .... 9
8.4. Current measurement ...................................... 9
8.5. Continuity/resistance testing ............................ 9
8.6. Rotating magnetic field direction detection
(only testo 755-2) .................................................... 9
9 Service and maintenance .......................................... 10
9.1. Replacing the batteries .................................. 10
9.2. Maintenance................................................... 10
9.3. Storage .......................................................... 10
9.4. Cleaning ......................................................... 10
10 Protecting the environment ..................................... 10