Contents
Column Compartments (VC-C10, VH-C10)
Operating Manual
Page 7
6 Operation................................................................................... 79
6.1 Introduction to this Chapter ................................................................................ 80
6.2 Safety Guidelines for Operation........................................................................... 81
6.3 Control Elements ................................................................................................. 82
6.3.1 Keypad...................................................................................................... 82
6.3.2 Status Indicators....................................................................................... 84
6.4 Power On/Off Control.......................................................................................... 85
6.5 Preparing the Device for Operation..................................................................... 86
6.6 Important Operating Parameters ........................................................................ 88
6.7 Ready Temp Delta and Equilibration Time........................................................... 90
6.8 Optimizing the Performance of the Device.......................................................... 91
6.8.1 General Guidelines ................................................................................... 91
6.8.2 Active Pre-Heating.................................................................................... 91
6.9 Shutting Down the Device ................................................................................... 92
6.9.1 Short-Term Shutdown (Interruption of Operation) ................................. 92
6.9.2 Long-Term Shutdown............................................................................... 93
6.9.3 Restart after Long-Term Shutdown.......................................................... 94
7 Maintenance and Service ........................................................... 95
7.1 Introduction to Maintenance and Service ........................................................... 96
7.2 Safety Guidelines for Maintenance and Service .................................................. 97
7.3 General Rules for Maintenance and Service........................................................ 99
7.4 Routine and Preventive Maintenance ............................................................... 100
7.4.1 Maintenance Plan .................................................................................. 100
7.4.2 Cleaning or Decontaminating the Device............................................... 100
7.4.3 Predictive Performance.......................................................................... 102
7.5 Column Switching Valve..................................................................................... 103
7.5.1 Inspecting the Column Switching Valve for Leakage.............................. 103
7.5.2 Replacing the Column Switching Valve .................................................. 104
7.5.3 Replacing the Column Switching Valve Cover ........................................ 106
7.6 Replacing the Post-Column Cooler (VH-C10 only) ............................................. 109
7.7 Replacing the Pre-heater ................................................................................... 110
7.7.1 Replacing the Active Pre-Heater ............................................................ 110
7.7.2 Replacing the Passive Pre-Heater........................................................... 112
7.8 Replacing the Main Power Fuses ....................................................................... 113
7.9 Replacing the Device Door................................................................................. 115