Waters 717plus - 5.2 Replacing the Syringe

Replacing the Syringe 129
5
5.2 Replacing the Syringe
Replace the syringe if:
• Plunger tip becomes worn
• You want to use the optional 25- or 2500-µL syringes
Syringe replacement involves:
• Removing the syringe
• Installing the new syringe
• Manually purging the syringe
5.2.1 Removing the Syringe
Removing the syringe requires:
• Releasing the plunger
• Lowering the syringe bracket
• Unscrewing the syringe
Releasing the Plunger
To release the plunger:
1. Set pump flow to 0 mL/min.
2. Remove the syringe compartment plastic cover by lifting up.
3. Remove the knurled nut that holds the plunger to the syringe guide mounting
bracket (Figure 5-2
).
STOP
Attention: Use only Waters-approved syringes in the autosampler (see Appendix B
for
ordering information). Unapproved syringes may cause erroneous results and/or may not
meet required safety standards.