5-48 Maintenance Procedures
5. Using the combined 2.5-mm Allen wrench and cone extraction tool,
tighten the captive screw securing each extraction cone retainer clip to
the ion block.
6. Fit the blanking plug O-ring to the ion block blanking plug.
Requirement: Fit a new O-ring, if necessary.
7. Fit the blanking plug to the ion block, and finger-tighten it.
8. Insert the combined 2.5-mm Allen wrench and cone extraction tool
through the hole in the blanking plug, and use it to fully tighten the
plug.
9. 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.
10. Using the combined 2.5-mm Allen wrench and cone extraction tool,
tighten the captive screws that secure the PEEK terminal block.
11. Ensure that the grooves for the cover seal, cone gas O-ring, and isolation
valve O-ring 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.
12. Fit the cover seal to the ion block, ensuring that it is correctly seated.
Requirement: Fit a new O-ring, if necessary.
13. Fit the cone gas O-ring to the ion block, ensuring that it is correctly
seated.
Requirement: Fit a new O-ring, if necessary.
14. If the old isolation valve O-ring has been disposed of, soak a new O-ring
in isopropyl alcohol for a few minutes.
Rationale: Doing so lubricates the O-ring and aids fitting the O-ring.
15. Fit the O-ring to the isolation valve.
16. Fit the isolation valve to the ion block assembly so that it is in the closed
position.
Caution: To avoid damaging the heater cartridge assembly wires,
do not bend or twist them when fitting the assembly to the ion
block.
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