Maintenance Procedures - Agilent Technologies Infinity II SFC Binary 1260 User Manual

Maintenance Procedures

The procedures described in this section can be done with the binary pump in
place in the system stack.
Table 9

Maintenance procedures

Procedure
"Exchange the Purge Valve Frit or the Purge
Valve" on page 100
"Remove the Pump Head Assembly"
page 105
"Maintenance of a Pump Head without Seal
Wash" on page 107
"Maintenance of a Pump Head with Seal
Wash" on page 110
"Exchange the Outlet Valve"
"Exchange the Solvent Selection Valve"
page 122
1260 SFC Binary Pump
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
on page 120 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
Valve 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
Pressure ripple unstable, run Valve Test for
verification
Cross port flow
Error message "Valve Failed"
8
Maintenance
O
2
97