Waters 1500-Series, Operator'S Manual

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5-8 Maintaining the HPLC Pump
Removing the pump head mounting screws
8. Carefully slide the pump head assembly off the pump.
Removing and replacing the plunger seal
To remove and replace the plunger seal:
1. For the 1525µ pump only, remove the plunger bearing from the pump
head.
2. For all 1500-series pumps, use the seal insertion tool or other
nonmetalic tool to pry the seal out of the pump head.
Tip:
Twist the plastic screw end of the tool clockwise into the seal, and
then pull the seal to remove it from the pump head.
3. Place the new plunger seal onto the tip of the seal insertion tool.
Tip:
Make sure the spring in the seal is facing away from the end of the
tool (you must be able to see the seal spring at the tip of the tool).
4. Moisten the seal with methanol.
5. Use the seal insertion tool to firmly seat the seal in the pump head.
6. Place the small end of the block part of the seal insertion tool into the
pump head.
7. Slide the tip of the tool (with the seal on it) through the block and into
the pump head.
Mounting
screws
1515/1525 pump
1525µ pump