Maintain the solvent management system
July 29, 2013, 715003794 Rev. B 185
Remove the head, seal-wash assembly, and plunger
For information about isolating problems in the solvent management system,
see Chapter 8.
See the figure “Solvent management system piston chamber
components (exploded view):” on page 186 to view the head, head nut,
plunger, seal wash assembly, and check valve assembly of each solvent
delivery piston chamber. For a list of replacement parts, see Appendix C.
Remove the head, seal-wash assembly, and plunger whenever you must
perform these tasks:
e2695 Solvent management system components and functions:
Component Function
Primary piston chamber Draws in/expels solvent as part of serial flow
design.
Accumulator piston
chamber
Draws in/expels solvent as part of serial flow
design.
Prime/vent valve Allows solvent purging, priming, and venting.
Seal-wash pump Provides solvent to wash the seals of the
primary and accumulator plungers.
Primary inlet check
valve
Maintains flow direction in the primary piston
chamber by opening in one direction only: opens
on the plunger intake stroke; closes on the
delivery stroke.
Accumulator inlet check
valve
Maintains flow direction in the accumulator
piston chamber by opening in one direction
only: opens on the plunger intake stroke; closes
on the delivery stroke.
Primary transducer Senses backpressure developed by resistance to
solvent flow in the primary piston chamber.
System transducer Senses backpressure developed by resistance to
solvent flow in the HPLC system.
In-line filter Provides solvent filtering between the solvent
management system and the sample
management system.
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