Waters 515 HPLC - Identifying and Correcting Noises

Troubleshooting 4-33
Identifying and correcting noises
The table below is a guide to troubleshooting and correcting noises in the
Waters 515 pump.
Identifying Noises
Symptom Possible cause Corrective action
Click or loud snap Binding plunger seal If click does not stop and
cannot be isolated to one
pump head, replace the
plunger seals, one at a time
(see “Cleaning and replacing
seals and plungers” on
page 4-9).
Worn indicator rod
spring
Replace the spring.
Squeak Plunger seals dry Wet plunger with
appropriate eluent through
pump head access holes.
Binding plunger seal Replace plunger seal
assembly (see “Cleaning and
replacing seals and
plungers” on page 4-9).
Improper plunger seal Install correct pump plunger
seal (see “Cleaning and
replacing seals and
plungers” on page 4-9).
Binding piston
indicator rod
Replace indicator rod.