Removing The Loading Pump; Cleaning The 10-Port Valve - LC Packings SWITCHOS II User Manual

6.3.7 Removing the Loading Pump

To remove the Micropump:
a) Disconnect all cables on the rear panel of loading pump.
b) Remove the capillary inlet and outlet connections from the loading pump.
c) Remove the side panels of the Switchos (Section 6.3.6).
d) Remove the two screws on the left side and the two screws on the right of
the loading pump.
e) Remove the loading pump from the front of the Switchos.
Caution: When removing the loading pump from the Switchos, carefully pull the
CAUTION
devices out of the housing. To avoid any damage to the component, make
certain that it is not allowed to drop as it is being removed from the housing.
Note: When re-installing the instrument, take care that the mobile phase tubing is
not bent or overly flexed.
6.3.8 Cleaning the 10-Port Switching Valve
Cleaning the 10-port valve can often be accomplished by flushing all the lines
with an appropriate solvent(s). The selection of the solvent is dependent on the
nature of the sample and the mobile phases that are used. Solvents such as
methanol, acetonitrile, methanol/water (80/20) or acetonitrile/water (80/20) are
normally used to clean the valve. See Appendix A for instructions about
disassembling/assembling, cleaning and maintenance of the switching valve.
User's Manual Switchos II
Maintenance and Troubleshooting
D850R3
6-9