Maintain the solvent management system
July 29, 2013, 715003794 Rev. B 187
page 230) and place the seal-wash reservoir on the same level as the
separations module.
5. Remove the head, seal-wash assembly, and plunger as one unit (see the
figure “Plunger, seal-wash, and head:” on page 193).
For more information about removing the head, see “Head removal and
replacement function” on page 237.
Notes on replacing the plunger seals
• For information about isolating problems in the solvent management
system, see Chapter 8.
• To ensure optimum performance, replace the plunger seal in a head
when you perform service. Replace the face seals after you replace the
plunger seal two or three times (see the figure “Plunger and face seal
orientation:” on page 188).
• The standard seals in the separations module are manufactured with
Fluoroloy™-G, an ultra-high molecular weight polyethylene material.
Extensive testing has indicated that these seals exhibit excellent
lifetimes for the majority of solvents typically used in HPLC separations
methods. If you find these seals perform unsatisfactorily for your
applications, contact Waters for alternative plunger seals manufactured
with graphite-filled PTFE material (part number WAT271066), or
Alliance ClearSeal (part number 700001326).
This procedure involves replacing these parts:
•Plunger seal
•Inlet face seal
• Outlet face seal
Required materials
• Seal insertion tool (startup kit)
• Seal removal tool (part number WAT039803)
• Replacement seals
• Squeeze bottle with 100% alcohol (methanol or isopropanol)
• Clean block, such as a detector cell window (part number WAT097295)
• Syringe (startup kit)
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