1220 Infinity II LC System User Manual 267
Maintenance and Repair
11
Manual Injector
Manual Injector
Overview of Maintenance Procedures
Flushing the Manual Injector
1 Switch the valve to the INJECT position.
2 Use the pump to flush the sample loop and seal grooves.
3 Use the needle-port cleaner (supplied with the valve) and syringe to flush
the needle port and vent capillary.
Table 45 Overview of maintenance procedures
Procedure Typical frequency Time required
Flushing the injector After using aqueous buffers or
salt solutions
5min
Exchanging the injection-valve
seal
After approximately 10000 to
20000 injections, or when the
valve performance shows
indication of leakage or wear
10 min
The use of aqueous buffers or salt solutions can lead to crystal formation.
Crystal formation may cause scratches on the injection seal.
âž” Always rinse the valve with water after using aqueous buffers or salt solutions.