Cleaning the ion block, isolation valve, and extraction cone 5-43
6. Use the 6-mm Allen wrench to fit and tighten the blanking plug to the
ion block.
7. Using the needle-nose pliers to gently grasp the heat-shrink tubing on
the heater cartridge assembly, slide the assembly and the PEEK
terminal block into the ion block.
8. Use the 2.5-mm Allen wrench to tighten the captive PEEK terminal
block securing screw.
9. If the 2 set screws securing the heater cartridge to the PEEK terminal
block are fitted, use the 1.5-mm Allen wrench to fit and tighten them.
10. Ensure that the grooves for the cover seal and extraction cone seal are
free from dirt and debris.
Tip: If contamination is present, use 1:1 methanol/water, applied to a
lint-free cloth, to carefully clean the grooves.
11. Fit a new cover seal to the ion block, ensuring that it is correctly seated.
12. Soak a new isolation valve O-ring in isopropyl alcohol for a few minutes.
Rationale: Doing so lubricates the O-ring and aids your fitting the
O-ring to the isolation valve.
13. Fit the new O-ring to the isolation valve.
14. Fit the isolation valve to the ion block assembly.
Caution: To avoid damaging the heater cartridge assembly
wires, do not bend or twist them either side of the heater
cartridge assembly heat-shrink tubing when fitting the assembly
to the ion block.
Caution: To avoid damage to the heater cartridge, do not
overtighten the set screws.
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