Waters Xevo G2 QTof Operator's, Overview And Maintenance Manual page 138

If contamination is present, use 1:1 methanol/water, applied to a
Tip:
lint-free cloth, to carefully clean the grooves.
3. Fit the O-rings to the PEEK ion block support.
Requirement:
To fit an O-ring in its groove, start fitting the O-ring at the notch in
Tip:
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.
Look through the PEEK ion block support as you tighten the
Tip:
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
page 5-45).
5-62 Maintenance Procedures
Fit new O-rings if any of the old O-rings were disposed of.
To ensure correct operation of the instrument, the
Caution:
hexapole springs must not touch a hexapole rod.
Hexapole spring
Hexapole rod