Contents
Page 8 Split Samplers (VC-A12, VC-A13, VF-A10, VF-A40, VH-A10, VH-A40)
Operating Manual
7.4 Routine and Preventive Maintenance ............................................................... 136
7.4.1 Maintenance Plan .................................................................................. 136
7.4.2 Cleaning or Decontaminating the Device............................................... 137
7.4.3 Predictive Performance.......................................................................... 139
7.5 Before Maintenance .......................................................................................... 140
7.5.1 Preparing the Autosampler for Maintenance ........................................ 140
7.5.2 Securing the Needle Unit ....................................................................... 140
7.5.3 Removing the Sample Loop Carrier Plate (Dual Split Samplers only)..... 142
7.6 Mounting Frame (Dual Split Samplers only) ...................................................... 143
7.6.1 Removing and Installing the Horizontal Frame Part............................... 144
7.6.2 Removing and Installing the Vertical Frame Part ................................... 145
7.7 Needle Wash System ......................................................................................... 147
7.7.1 Needle Wash Liquid Guidelines.............................................................. 147
7.7.2 Washing the Needle ............................................................................... 147
7.7.3 Replacing Needle Wash Lines................................................................. 148
7.8 Seal Wash System .............................................................................................. 156
7.8.1 Replacing the Seal Wash Lines ............................................................... 156
7.9 Sample Loop....................................................................................................... 169
7.9.1 Compontens of the Sample Loop Unit ................................................... 169
7.9.2 Replacing the Sample Loop in a Single Split Sampler ............................. 170
7.9.3 Replacing Sample Loops in a Dual Split Sampler .................................... 173
7.9.4 Completing the Sample Loop Replacement ........................................... 179
7.10 Replacing Needle Unit and Needle Seat ............................................................ 181
7.11 Metering Device Head ....................................................................................... 187
7.11.1 Disconnecting and Connecting Metering Device Head Capillaries......... 188
7.11.2 Replacing the Metering Device Head ..................................................... 189
7.11.3 Piston Gets Stuck Upon Metering Device Head Removal ...................... 193
7.12 Injection Valve ................................................................................................... 194
7.12.1 Guidelines for Handling the Injection Valve........................................... 194
7.12.2 Inspecting the Injection Valve for Leakage ............................................ 194
7.12.3 Replacing the Injection Valve ................................................................. 196
7.13 Drain Pump Tubing ............................................................................................ 202
7.13.1 Testing the Drain Pump Tubing for Blockage ......................................... 203
7.13.2 Testing the Drain Pump Tubing for Leakage .......................................... 203
7.14 Replacing the Drain Pump Tubing...................................................................... 205
7.15 After Maintenance............................................................................................. 207
7.15.1 Restarting the Autosampler after Maintenance .................................... 207
7.15.2 Installing the Sample Loop Carrier Plate (Dual Split Samplers only) ...... 208