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