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6
Vacuum System
6 Screw the ballast into the empty port, and tighten it with a 14 mm wrench.
To remove the IDP pump ballast
Materials needed
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•
•
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The IDP pump operates at high temperatures. Do not touch any part until you
WAR N IN G
are sure it is cool.
The MS must be off and vented, and the foreline pump must be off, before
C AU T I O N
performing this procedure.
Procedure
1 Vent the mass spectrometer (see the Agilent 7250 Accurate-Mass Q-TOF
2 Using a 4 mm hex wrench, unscrew the six screws securing the front cowl.
3 Rotate the cowl over the exhaust port.
4 Unplug the fan connector at the base of the cowl, and remove the cowl.
5 Using a 14 mm wrench, loosen the ballast until it can be removed by hand.
6 Unscrew and remove the ballast.
7 Using a 6 mm hex wrench, install the ballast plug.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
4 mm hex wrench (8710-2720)
6 mm hex wrench (8710-1839)
14 mm wrench
Ballast plug (Contact Agilent for this part)
GC/MS System Operating Manual).
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Table of Contents
Troubleshooting
