10 5977B Series MSD Troubleshooting and Maintenance Manual
1 Introduction
5977B Series MSD Version
The 5977B MSD is equipped with a turbomolecular (turbo) pump, and a choice
of four foreline pumps. A CI ion source includes a reagent flow control system,
a CI calibration system, and other required hardware features. The serial
number label displays a product number (Table 1) that indicates what type of
MSD you have.
Tab le 1 Available high vacuum pumps
Model name Product number Description Ionization mode/Type
5977B MSD Diff Pump G7080B Diffusion pump Electron ionization
(EI)/Stainless Steel
5977B MSD Turbo Pump G7081B Turbo pump Electron ionization
(EI)/Stainless Steel
5977B Inert+ EI MSD Turbo G7077B Turbo pump MSD Electron ionization
(EI)/Extractor
5977B Inert+ EI/CI MSD Turbo G7078B Turbo pump MSD Electron ionization
(EI) /Extractor
Chemical ionization /PCI, NCI
5977B HES MSD G7079B Turbo pump Electron ionization (EI)/High
Efficiency
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