Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 106

6 Vacuum System
3 Rotate the cowl over the exhaust port.
4 Unplug the fan connector at the base of the cowl, and remove the cowl.
5 Set aside the L-bracket.
Wear a face mask. The IDP pump may contain significant quantities of dust
WAR N IN G
containing chemicals analyzed by the mass spectrometer. Do NOT use
compressed air to blow out this dust. Using compressed air will contaminate
your laboratory with potentially hazardous dust.
6 Using a 5 mm hex wrench, unscrew the six screws securing the outboard
7 Remove the scroll housing by lifting it away from the rest of the pump.
8 Remove the O-ring.
9 Remove both tip seals from the orbiting plate and the outboard housing.
10 Use cotton swabs dampened with alcohol to clean all debris from the
11 Install the new O-ring.
12 Install the new tip seals into the grooves in the orbiting scroll and outboard
13 Align the outboard housing with the orbiting plate, and reattach it using the
14 Reinstall the console.
15 Align the slots in the L-bracket with the holes in the electrical tray.
16 Reconnect the fan connector.
17 Rotate the front cowl over the exhaust port, and align it on the front of the
18 Reattach the front cowl using the six screws and a 4 mm hex wrench.
106
housing. It may be necessary to raise and support the top console to access
the screws.
orbiting plate, outboard housing, and O-ring groove.
housing. The tip seal should be well seated in the grooves, protruding only
slightly from the grooves.
six screws and a 5 mm hex wrench. When tightening the screws, do so in a
crisscross pattern.
pump.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual