6
Maintenance
Completely Disassembling and Reassembling the Ion Source
Thermo Scientific TSQ Quantum XLS Series User Guide 95
Inspect and install a new filament (P/N 120320-0030, in the TSQ Quantum XLS Accessory Kit):
a. Verify that the filament wire is centered in the electron lens hole.
b. Insert the filament into the centering ring.
c. Align the filament leads with the EI/CI Source PCB connectors and gently press the
leads into the connectors. Normally, there is a small gap of about 0.4 mm (0.016 in.)
between the filament and the connectors. The gap allows the ceramic centering ring
to properly position and align the electron lens hole with the ion volume.
d. Secure the filament and centering ring with the retainer clip.
9. Press the heater ring and lens assemblies onto the cartridge heaters on the ion source
block.
10. Use the retainer clip and threaded standoff to secure the lens assemblies to the ion source.
See Figure 54 on page 94.
11. Reinstall the ion source onto the magnet yoke.
12. Reinstall the ion source into the vacuum manifold and reinsert the capillary column into
the ion source. See “Reinstalling the Ion Source” on page 92.
Restart the system. See “Starting Up the System after a Complete Shutdown” on page 53.
Completely Disassembling and Reassembling the Ion Source
Disassemble the ion source completely to clean the ion source block or to replace the EI/CI
Source PCB.
Tip Now is a good time to clean the ion source block and lenses. To do so, use the
procedure described in “Cleaning Stainless Steel Parts” on page 98.
IMPORTANT For accurate temperature readings of the heater block, fully screw the
threaded standoff into the ion source to ensure contact between the temperature
sensor and the heater block.
Tools Needed
• Gloves, cleanroom grade (P/N 23827-0008 and 23827-0009)
• Lint-free cloth
Frequency
As needed
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