Metrohm 792 Basic IC - Manual (Page 154)

5.2 Maintenance and servicing
792 Basic IC
145
3 Rinse column
x Place beaker beneath the column outlet.
x Switch on high-pressure pump and rinse column with eluent
for ca. 10 min, then switch off pump.
4 Connect column to detector block
x Screw outlet end of separating column 66 66 66 66 to inlet capillary 37 37 37 37
or suppressor inlet capillary 75 75 75 75.
Changing the separation system
If you wish to replace an IC separating column by a column of a differ-
ent type, proceed as follows (see Fig. 12 and Fig. 14):
1 Remove old column
x Switch off high-pressure pump and wait for pressure to drop.
x Unscrew column 66
66 66 66 from inlet capillary 37 37 37 37 of the detector
block or from the suppressor inlet capillary 75 75 75 75.
x Unscrew column 66 66 66 66 from column connection capillary 20 20 20 20 or
the precolumn.
2 Rinse with eluent
x Place beaker beneath the column connection capillary 20 20 20 20.
x Rinse IC system with eluent used for the separating column
(flow rate 1 mL/min) for ca. 15 min.
3 Connect new column to injector
x Remove end caps from column 66
66 66 66.
x Screw inlet end of separating column 66 66 66 66 (note flow direction)
to column connection capillary 20 20 20 20 or to the precolumn (see
section 2.7.7/section 2.7.8).
4 Rinse column
x Place beaker beneath the column outlet.
x Set flow rate for new separating column.
x Switch on high-pressure pump and rinse column with eluent
for ca. 10 min, then switch off pump.
5 Connect column to detector block
x Screw outlet end of separating column 66 66 66 66 to inlet capillary 37 37 37 37
or suppressor inlet capillary 75 75 75 75.