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Repairing the Pump
Exchanging the Pump Seals and Seal Wear-in Procedure
Seal Wear-in Procedure
NOTE This procedure is required for standard seals only (5063-6589), but it
will definetely damage the normal phase application seals
(0905-1420).
1 Place a bottle with 100 ml of Isopropanol in the solvent cabinet and place the
tubing (including bottle head assembly) of the channel used for the wear-in
procedure in the bottle.
2 Unscrew the connecting tube from MCGV to AIV. Screw the adapter
(0100-1847) to the AIV and connect the inlet tube from the bottle head directly
to it.
3 Connect the restriction capillary (5022-2159) to the purge valve. Insert its
other end into a waste container.
4 Open the purge valve and purge the system for 5 minutes with isopropanol at
a flow rate of 2 ml/min.
5 Close the purge valve, set the flow to a rate adequate to achieve a pressure of
350 bar. Pump 15 minutes at this pressure to wear in the seals. The pressure
can be monitored at your analog output signal, with the handheld controller,
Chemstation or any other controlling device connected to your pump.
4 Insert new seals into the pump head.
5 Reassemble the pump head assembly (see
“Reassembling the Pump Head Assembly” on
page 121). Reset seal wear counter and
liquimeter as described in the documentation.
Seals