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Functional Description
The Saturn 2000 GC/MS Diffusion Pump Electronic Assemblies
The Power Input Subsystem and Turbomolecular
Pump Controller
The power input subsystem contains the following circuits and switches:
•
Main power switch
•
SERVICE switch
•
Line voltage switches
Main Power Circuit
Line power of 115 Vac
±
15%, 60 Hz
±
3 Hz (or 230
±
15 Vac, 50 Hz
±
3 Hz) first
enters the rear panel of the mass spectrometer, through J1, then passes through
the line filter and the circuit breaker. After the circuit breaker, power is split in two
directions. One path supplies the turbomolecular pump controller and foreline
pump via J2. The second path goes to the electronics service switch, which
controls power going to the power board and the rest of the electronics. The