Table of contents
1 Safety...................................................................................................................................................................................... 7
1.1 Safety structure of the devices.................................................................................................................................... 7
1.2 EMC requirements........................................................................................................................................................ 7
1.3 Software versions.......................................................................................................................................................... 8
1.4 Observing additional operating instructions............................................................................................................... 9
1.5 Intended use................................................................................................................................................................... 9
1.6 Foreseeable misuse....................................................................................................................................................... 9
1.7 Prohibition of modifications to the device................................................................................................................ 10
1.8 Materials....................................................................................................................................................................... 10
1.9 Fluorinated refrigerant................................................................................................................................................ 10
1.10 Natural refrigerant....................................................................................................................................................... 10
1.11 Heat transfer liquid requirements............................................................................................................................... 11
1.12 Hose requirements....................................................................................................................................................... 11
1.13 Application area............................................................................................................................................................. 11
1.14 Personnel qualification................................................................................................................................................. 11
1.15 Personal protective equipment................................................................................................................................... 11
1.16 Safety fittings on the device....................................................................................................................................... 12
1.16.1 Overtemperature protection................................................................................................................... 12
1.16.2 Low-level protection................................................................................................................................. 12
1.17 Warning symbols on the device.................................................................................................................................. 12
1.18 Warning symbols.......................................................................................................................................................... 13
1.19 Structure of warnings.................................................................................................................................................. 14
2 Unpacking............................................................................................................................................................................. 15
3 Structure and function........................................................................................................................................................ 17
3.1 Structure....................................................................................................................................................................... 17
3.1.1 Structure of the bath thermostat............................................................................................................ 17
3.1.2 Structure of the circulation thermostats............................................................................................... 19
3.2 Operating elements..................................................................................................................................................... 21
3.2.1 Mains and safety switch........................................................................................................................... 21
3.2.2 Release button and maximum temperature knob................................................................................. 21
3.3 Functional elements.................................................................................................................................................... 21
3.3.1 Hydraulic circuit........................................................................................................................................ 21
3.3.2 Refrigerating machine............................................................................................................................. 24
3.3.3 Heat discharge through cooling in a hybrid design.............................................................................. 24
3.3.4 Nitrogen overlay....................................................................................................................................... 25
3.3.5 Series standard and optional interfaces................................................................................................. 26
3.4 Rating label.................................................................................................................................................................. 28
V6
PRO bath thermostats and circulation thermostats 3 / 156