Waters Xevo TQ MS, Operator And Maintenance Manual, Page: 106 / 184

4-58 Maintenance Procedures
3. Fit the O-rings to the PEEK ion block support. Fit new O-rings if any of
the old O-rings were disposed of.
Tip:
To fit an O-ring in its groove, start fitting the O-ring at the notch in
the groove, and then progressively work the ring into the groove, in
either direction from the notch.
4. Fit the PEEK ion block support to the instrument’s housing.
5. Use the 3-mm Allen wrench to fit and tighten the 4 PEEK ion block
support securing screws.
Tip:
Look through the PEEK ion block support as you tighten the
securing screws. Ensure that the hexapole springs do not buckle and
touch a hexapole rod.
6. Fit the ion block assembly to the PEEK ion block support (see “Cleaning
the source hexapole assembly” on page 4-53 ).
Caution:
To ensure correct operation of the instrument, the
hexapole springs must not touch a hexapole rod.
Hexapole spring
Hexapole rod