Manual

Recirculating coolers
3
Table of Contents
1. Intended use ............................................................................................... 4
1.1. Description ................................................................................................. 4
2. Operator responsibility – Safety instructions .............................................. 4
2.1. Disposal ...................................................................................................... 6
2.2. EC Conformity ............................................................................................ 7
2.3. Warranty conditions .................................................................................... 7
2.4. Technical specifications .............................................................................. 8
2.5. Cooling water connection ......................................................................... 13
3. Safety notes for the user .......................................................................... 14
3.1. Explanation of safety notes ...................................................................... 14
3.2. Explanation of other notes ........................................................................ 14
3.3. Safety instructions .................................................................................... 14
4. Operating controls and functional elements ............................................. 16
5. Operation .................................................................................................. 19
5.1. Preparations ............................................................................................. 19
5.2. Return flow safety device ......................................................................... 20
5.3. Bath fluids ................................................................................................. 21
5.4. Tubing ...................................................................................................... 21
5.5. Power connection ..................................................................................... 22
5.6. Filling ........................................................................................................ 22
5.7. Draining .................................................................................................... 23
5.8. Connecting an external sensor ................................................................. 24
6. Manual operation ..................................................................................... 25
6.1. Switching on ............................................................................................. 25
6.2. Start .......................................................................................................... 25
6.2.1. Automatic / non-automatic start mode.......................................... 26
6.3. Setting the setpoint temperatures ............................................................. 27
6.3.1. Setting the temperature ................................................................ 27
6.3.2. Setting the control ratio for feed/return flow temperature ............. 28
6.3.3. Setting the safety temperatures ................................................... 29
6.3.4. Low liquid level protection ............................................................ 29
6.4. PID control parameters ............................................................................. 30
7. Trouble shooting guide ............................................................................. 33
7.1. Other error messages ............................................................................... 34
8. Electrical connections .............................................................................. 34
9. Remote control ......................................................................................... 37
9.1. Communication with a PC or data system ................................................ 37
9.2. List of commands ..................................................................................... 37
9.3. Status messages ...................................................................................... 39
9.4. Error messages ........................................................................................ 39
10. Menu functions ......................................................................................... 40
10.1. Selecting/exiting the configuration level .................................................... 40
10.2. Setting the parameters ............................................................................. 40
10.3. Adjustable parameters .............................................................................. 41
10.4. Selecting/exiting the calibration level ........................................................ 42
10.5. Calibration ................................................................................................ 42
11. Cleaning / repairing the unit ..................................................................... 45