Endress+Hauser Analytik Jena PlasmaQuant MS Series, Service Manual, Page: 4 / 221

Contents PlasmaQuant MS Series
4
4.2.6 Sample Introduction PCB ............................................................................ 26
4.3 Safety and Operational Information ............................................................... 26
4.4 Specifications ................................................................................................... 28
4.5 Maintenance .................................................................................................... 28
4.5.1 Cleaning the Torch ...................................................................................... 29
4.5.2 Removing and Replacing the Nebulizer ..................................................... 30
4.5.3 Cleaning the Concentric Nebulizer ............................................................. 30
4.5.4 Removing and Replacing the Spray chamber ............................................ 31
4.5.5 Cleaning the Spray Chamber ....................................................................... 32
4.5.6 Replacing the Peristaltic Pump Tubing ...................................................... 32
4.5.7 Removing the Peristaltic Pump Assembly ................................................. 33
5 Gas Control System .................................................................................................... 34
5.1 System Description .......................................................................................... 34
5.1.1 Instrument Gas Control ............................................................................... 34
5.1.2 iCRC Gas Control .......................................................................................... 38
5.2 Theory of Operation......................................................................................... 41
5.2.1 Instrument Gas Control ............................................................................... 41
5.2.2 iCRC Gas Control .......................................................................................... 45
5.3 Safety and Operational Information ............................................................... 45
5.4 Specifications ................................................................................................... 45
5.5 Replacement/Maintenance ............................................................................ 46
5.5.1 Cover Removal Procedures to Access the Gas Control Box ....................... 47
5.5.2 Removal of Sample Introduction PCB ........................................................ 48
5.5.3 Removing Sheath Gas, Nebulizer and Nitrox Mass Flow Controllers ...... 49
5.5.4 Removing the Argon Inlet Manifold with RG1 and RG2 Attached .......... 50
5.5.5 Removing Plasma/Auxiliary Gas Flow Manifold ....................................... 51
5.5.6 Checking Plasma Gas Flows ........................................................................ 52
5.5.7 Checking Auxiliary Gas Flows...................................................................... 53
5.5.8 Igniter Assembly .......................................................................................... 54
5.5.9 Checking Sheath Gas Flow (MFC2) ............................................................ 54
5.5.10 Checking Nebulizer Gas Flow (MFC1) ................................................... 55
5.5.11 Adjusting Gate Valve ............................................................................... 55
5.5.12 Removing and Maintaining the iCRC Box Assembly ............................. 56
6 Plasma Generation .................................................................................................... 60
6.1 System Description .......................................................................................... 60
6.2 Theory of Operation......................................................................................... 60
6.2.1 Plasma Formation ....................................................................................... 60
6.2.2 Igniter Assembly .......................................................................................... 61