Replacing the ion block source heater 5-75
8. Dispose of the heater cartridge assembly.
9. Use the needle-nose pliers to gently grasp the heat-shrink tubing on the
new heater cartridge assembly and slide the assembly into the ion
block..
10. Use the needle-nose pliers to position the 2 heater wire ring tags fully
down on the PEEK block terminals.
11. Use the 1.5-mm Allen wrench to fit and tighten the 2 screws securing
the heater wires to the PEEK terminal block.
12. Fit the ion block cover plate to the ion block assembly, and then use the
2.5-mm Allen wrench to tighten the 4 captive screws securing ion block
cover plate.
13. Fit the ion block assembly to the instrument (see “Fitting the ion block
assembly to the source assembly” on page 5-43).
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 a short circuit to the ion block cover, ensure
that the two heater cartridge ring tags are pushed fully down on
the PEEK block terminals.
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