Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 28

2 General Troubleshooting
MS turns on but then the foreline pump shuts
off
The MS will shut down both the foreline pump and the turbo pumps if the system
fails to pump down correctly. This is usually because of a large air leak or the
side plate has not sealed correctly. This feature helps prevent the foreline pump
from sucking air through the system, which can damage the analyzer and the
turbo pumps.
You must power cycle the MS to recover from this state.
28 7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual