TESTO 557s - Default Chapter; Table of Contents

Contents
Contents
1 About this document ........................................................................... 5
2 Safety and disposal .............................................................................. 5
3 Product-specific approvals ................................................................. 5
4 Product-specific information............................................................... 6
5 Use ......................................................................................................... 7
6 Product description ............................................................................. 8
6.1 Overview of the testo 550s ................................................................................. 8
6.2 Overview of the testo 557s ................................................................................. 9
6.3 Overview of main menu .................................................................................... 10
6.4 Control keys ..................................................................................................... 11
7 First steps ........................................................................................... 11
7.1 Inserting (rechargeable) batteries ..................................................................... 11
7.2 Switching the instrument on and off .................................................................. 12
7.3 Setup wizard ..................................................................................................... 12
8 Using the product ............................................................................... 13
8.1 Preparing for measurement .............................................................................. 13
8.1.1 Operating the valve positioners ................................................................................ 13
8.1.2 Automatic mode ....................................................................................................... 14
8.2 Measuring mode ............................................................................................... 14
8.2.1 Refrigeration ............................................................................................................ 14
8.2.2 Evacuation ............................................................................................................... 19
8.2.3 Pressure Leak Test .................................................................................................. 22
8.2.4 Target Superheat ..................................................................................................... 25
8.2.5 Compressor Test (DLT) ............................................................................................ 29
8.2.6 Delta T ..................................................................................................................... 31
8.3 Bluetooth .......................................................................................................... 33
8.3.1 Probes compatible with the instrument ..................................................................... 33
8.3.2 Establishing a connection ......................................................................................... 34
8.3.3 Switching on/off ........................................................................................................ 34
8.3.3.1 Switching on ............................................................................................................................35
8.3.3.2 Switching off ............................................................................................................................35
8.3.3.3 Manual probe selection ...........................................................................................................36