Installing The Fi/Fd Inner Source Direct Insertion Probe Only Flange - Waters GCT Premier Operator's Manual

Removing the FI/FD inner source lock assembly
To remove the FI/FD lock assembly:
1. In the Tune window, click
2. Click Vacuum > Vent Source.
A message confirms the vent command.
3. Click OK.
The turbomolecular pump is turned off. When the turbomolecular pump
has run down to half normal operating speed, the vent valve is opened
and the instrument is automatically vented.
4. Wait for the Vacuum LED on the instrument front panel to display
yellow or red.
5. Use a hex (Allen) key to unscrew the two hex head bolts which retain the
inner source lock assembly to the outer source.
6. Carefully lift the inner source lock assembly away from the outer source.

Installing the FI/FD inner source direct insertion probe only flange

The FI/FD inner source lock assembly is not compatible with the direct
insertion probe and insertion lock assembly.
To use the direct insertion probe insertion lock in FI mode, you must use the
FI/FD inner source direct insertion probe only flange.
To fit install the FI/FD inner source direct insertion probe only flange:
1. On the inner source assembly, verify that the O-rings:
• Sit correctly in the groove.
• Are in good condition.
• Are clean and free from dust.
2. Carefully fit the FI/FD inner source direct insertion probe flange on the
guide rods and present it centrally to the outer source so that the inner
source assembly flange is flush with the outer source cover.
3. Tighten the two retaining thumbscrews securing the FI/FD inner source
direct insertion probe only flange to the outer source.
.
Setting-up for FI/FD operation 9-9