Waters Prep Series Installation And Maintenance Manual page 109

Pump troubleshooting (Continued)
Symptom
Pump leaks solvent
Possible cause
Loose fitting
Salt crystals or debris
in fitting
Damaged fitting
assembly
Worn pump plunger
seals
Loose pump head
Loose pump inlet or
outlet check valve
Loose compression
screw(s) on the pump
head
Corrective action
Tighten leaking fitting.
Stop Flow; remove and
disassemble fitting;
rinse fitting
components with water;
reassemble fitting.
Stop Flow; remove and
disassemble fitting;
verify fitting
components; replace
ferrule and other
damaged parts.
Replace seals.
Tighten loose pump
head(s) with a 5/32-inch
hex-head wrench.
Tighten loose check
valve(s).
Tighten loose
compression screw(s)
with a 5/16-inch
open-end wrench.
Troubleshooting 3-25