Maintenance Procedures - Agilent Technologies 1260 Infinity II User Manual

Maintenance Procedures

The procedures described in this section can be done with the binary pump in
place in the system stack.
Table 12

Maintenance procedures

Procedure
"Exchange the Purge Valve Frit or the Purge
Valve" on page 120
"Remove the Pump Head Assembly"
page 125
"Maintenance of a Pump Head without Seal
Wash" on page 127
"Maintenance of a Pump Head with Seal
Wash" on page 130
"Exchange the Active Inlet Valve (AIV) or its
Cartridge" on page 137
"Exchange the Outlet Valve"
"Exchange the Solvent Selection Valve"
page 148
InfinityLab LC Series 1260 Infinity II Binary Pump User Manual
Typical Frequency
Yearly, or if the frit
shows indication of
contamination or
blockage
If internally leaking
on During yearly
maintenance
Yearly, or if pump
performance indicates
seal wear
Yearly, or if pump
performance indicates
seal wear
If leaking externally
If solenoid is defective
on page 144 If internally leaking
on If internally leaking
If solenoid is defective
Maintenance Procedures
Notes
A pressure drop of > 10 bar in low delay
volume configuration and > 20 bar in standard
configuration across the frit (5 mL/min H
with purge valve open) indicates blockage
Solvent dripping out of waste outlet when valve
is closed
Necessary to get access to pump seals and
pistons
Leaks at lower pump head side, unstable
retention times, pressure ripple unstable — run
Pump Leak Rate Test for verification
Seal life time shorter than normally expected
— check pistons while changing the seals
Only necessary when Seal Wash Option is
installed. Leaks at lower pump head side, loss
of wash solvent
Error messages "Inlet Valve Fuse" or "Inlet
Valve Missing"
Pressure ripple unstable, run Pump Leak Rate
Test for verification
Cross port flow
Error message "Valve Failed"
8
Maintenance
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