Table of Contents xix
4.4 Maintaining the Rheodyne 7725i Manual Injector ......................................... 79
4.4.1 Tightening the Needle Seal ............................................................... 79
4.4.2 Replacing the Position Sensing Switch ............................................ 80
4.4.3 Rotor Seal Leakage ........................................................................... 81
4.4.4 Tightening the Pressure Adjusting Screw ......................................... 81
4.4.5 Replacing the Rotor Seal .................................................................. 81
4.4.6 Reassembling the Injector ................................................................. 82
Chapter 5
Error Messages, Diagnostics, and Test Procedures
..................................... 85
5.1 Summary of Error Messages........................................................................... 86
5.1.1 Error Message Overview .................................................................. 86
5.1.2 Warning Messages ............................................................................ 87
5.1.3 Shutdown Messages .......................................................................... 91
5.2 Running 600 Controller Self-Diagnostic Tests ............................................... 94
5.3 Performing 600 Controller Extended Test Routines ....................................... 96
5.3.1 Extended Diagnostic Test Summary ................................................. 96
5.3.2 Performing the Stop Flow Test ......................................................... 99
5.3.3 Performing the External Inject Test .................................................. 99
5.3.4 Performing the External Switch (S1-S4) Test ................................... 99
5.3.5 Performing the Hold Switch Test .................................................... 100
5.3.6 Performing the Chart Test ............................................................... 100
5.3.7 Performing the Sparge Valves Test ................................................. 101
5.3.8 Performing the Gradient Proportioning Valve Test ........................ 101
5.4 Advanced 600E Pump Testing...................................................................... 102
5.4.1 Testing the Check Valves ................................................................ 102
5.4.2 Gradient Proportioning Valve Pair Test .......................................... 105
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