Overview Of Maintenance And Repair - Agilent Technologies 1260 Infinity VL User Manual

9
Maintenance

Overview of Maintenance and Repair

Overview of Maintenance and Repair

The following pages describe maintenance (simple repairs) of the pump that
can be carried out without opening the main cover.
Table 7 Simple Repair Procedures
Procedure
"Checking and Replacing the Solvent
Filter" on page 112
"Exchanging the Passive Inlet Valve
(PIV)" on page 113
"Exchanging the Outlet Valve"
"Exchanging the Purge Valve Frit"
page 117
"Exchanging the Purge Valve Frit"
page 117
"Maintenance of a Pump Head Without Seal
Wash Option" on page 121
Exchanging pistons, see "Maintenance of a
Pump Head Without Seal Wash Option"
page 121
"Exchanging the Optional Interface
Board" on page 134
110
Typical Frequency
If solvent filter is blocked
If internally leaking
on page 115 If internally leaking
on If internally leaking
on If the frit shows indication
of contamination or
blockage
If pump performance
indicates seal wear
If scratched
on
If defective
Notes
Gradient performance problems, intermittent
pressure fluctuations
Pressure ripple unstable, run Leak Rate Test for
verification
Pressure ripple unstable, run Leak Rate Test for
verification
Solvent dripping out of waste outlet when valve
closed
A pressure drop of > 10 bar across the frit (at a
water flow of 5 mL/min with open purge valve)
indicates blockage
Leaks at lower pump head side, unstable
retention times, pressure ripple unstable — run
Leak Rate Test for verification
Seal life time shorter than usual — check
pistons while changing the seals
Error condition, indicated by red status
indicator
1260 Infinity QuatPump VL User Manual