Oritron Dionex Ion Chromatography System ICS-2100 - Manual (Page 138)

ICS-2100 Ion Chromatography System
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Doc. 065291-01 3/09
4. If the O-ring is removed with the valve knob in Step 3 , pull the O-ring off the
end of the knob (see Figure 5-17 ). If the O-ring is not removed with the valve
knob, insert a thin object (for example, the bent end of a paper clip) into the
cavity in the pump head and carefully pull out the O-ring. Do not scratch the
cavity.
5. Slide a new O-ring (P/N 055752) over the end of the valve.
6. To reinstall the valve containing the new O-ring, turn the knob clockwise and
then tighten fingertight.
NOTE It is normal to encounter resistance after several
rotations of the knob; the O-ring is being pushed
into the cavity of the pump head.
7. Turn on the main power switch.
8. Open the eluent valve.
9. Prime the pump (see Section 5.17 ).
Scratches in the cavity will cause leaks around the base of the knob
while the pump is being primed.
Figure 5-17. Waste Valve or Priming Valve O-Ring Replacement
Valve Knob
O-Ring
(P/N 055752)