Waters 1500-Series, Operator'S Manual

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Replacing and cleaning plunger seals and plungers 5-13
3. Reinstall the plunger assembly
• For 1525µ pump, reinstall the plunger assembly into the head
support assembly.
• For 1515/1525 pumps, use the plunger insertion tool to push the
plunger assembly into the pump piston as far as it will go, and then
use the snap-ring pliers to insert the snap ring.
Make sure the snap ring is fully seated in the groove before you
release the pliers.
Inserting the plunger (1515/1525 pumps)
4. Use the data control software to set the flow rate to 1.0 mL/min and
initiate pump flow.
5. When the indicator rod is fully retracted into the pump head, use the
software to stop the flow, turning off the pump.
6. With the indicator rod hole oriented to the upper right (to the upper left
for 1525µ ) , reinstall the head support assembly. Alternately tighten the
four screws, taking care not to overtighten.
7. Moisten the plunger seal and plunger with methanol.
Snap-ring pliers
Plunger insertion tool