60 Maintenance Procedures
Figure 4-1 600E Pump Assemblies
Table 4-1 600E Pump Assemblies
Description Function
Inlet manifold valve Eluent purging, pump priming (injection), eluent draw-off.
Pump head assemblies
(left and right)
Draw in/expel eluent.
Drain holes (behind inlet
check valves)
Drain solvent that collects behind the plunger seals (position
on left head shown).
Inlet and outlet check
valves
Maintain flow direction by opening in one direction only
(for example, the inlet valve opens on piston intake stroke
and closes on delivery stroke).
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