Simple Repairs - Agilent Technologies 1200 Series Manual

Simple Repairs

The procedures described in this section can be done with the quaternary
pump in place in the system stack.
Table 11 Simple Repair Procedures
Procedure
"Checking and Cleaning the Solvent
Filter" on page 78
"Exchanging the Active Inlet Valve"
page 79
"Exchanging the Outlet Ball Valve"
page 83
"Exchanging the Purge Valve Frit or the
Purge Valve" on page 85
"Exchanging the Purge Valve Frit or the
Purge Valve" on page 85
"Exchanging the Pump Seals and Seal
Wear-in Procedure" on page 89
"Exchanging the Plungers"
"Installing the Seal Wash Option"
page 94
"Exchanging the Optional Interface
Board" on page 103
1200 Series Quarternary Pump User Manual
Typical Frequency
If solvent filter is blocked
on If internally leaking
on If internally leaking
If internally leaking
If the frit shows indication
of contamination or
blockage
If pump performance
indicates seal wear
on page 92 If scratched
on If seals show indication of
leaks
If defective
Notes
Gradient performance problems, intermittent
pressure fluctuations
Pressure ripple unstable, run leak test for
verification
Pressure ripple unstable, run leak test for
verification
Solvent dripping out of waste outlet when valve
closed
A pressure drop of > 10 bar across the frit
(5 ml/min H O with purge open) indicates
2
blockage
Leaks at lower pump head side, unstable
retention times, pressure ripple unstable — run
leak test for verification
Seal life time shorter than normally
expected — check plungers while changing
the seals
Leaks at lower pump head side, loss of wash
solvent
Error condition, indicated by red status
indicator
7
Maintenance

Simple Repairs

77