Overview Of Maintenance And Repair - Agilent Technologies InfinityLab LC Series User Manual

8 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 20 Simple repair procedures
Procedure
"Checking and Replacing the Solvent
Filter" on page 131
"Exchange the Passive Inlet Valve"
page 132
"Exchange the Active Inlet Valve (AIV) or its
Cartridge" on page 160
"Exchange the Outlet Valve"
"Exchange the Purge Valve Frit or the Purge
Valve" on page 136
"Exchange the Purge Valve Frit or the Purge
Valve" on page 136
"Maintenance of a Pump Head Without Seal
Wash Option" on page 143
Exchange pistons, see "Maintenance of a
Pump Head Without Seal Wash Option"
page 143
Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
Typical Frequency
If solvent filter is blocked
on If internally leaking
If internally leaking
on page 134 If internally leaking
If internally leaking
If the frit shows indication
of contamination or
blockage
If pump performance
indicates seal wear
If scratched
on
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
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
127