Waters Xevo TQD, Overview And Maintenance Manual

Page: 173 / 250

Replacing the ion block source heater
March 14, 2014, 715004387 Rev. B 173
7. Use the needle-nose pliers to gently grasp the heat-shrink tubing on the
heater cartridge assembly and slide the assembly out of the ion block.
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 combined 2.5-mm Allen wrench and cone extraction tool to fit
and tighten the 2 screws securing the heater wires to the PEEK
terminal block.
12. Fit the ion block cover plate onto the ion block assembly, and then use
the combined 2.5-mm Allen wrench and cone extraction tool to tighten
the 2 captive screws securing ion block cover plate.
13. Fit the ion block assembly onto the instrument (see page 137 ).
Notice:
To avoid damaging the heater cartridge assembly wires,
do not bend or twist them when fitting the assembly to the ion
block.
Notice:
To avoid a short circuit to the ion block cover, ensure that
the 2 heater cartridge ring tags are pushed fully down on the
PEEK block terminals.
Heat-shrink tubing
Heater cartridge assembly