NOTICE
The O-ring [102] (50 or 70 column) or adapter rod seal {103}
(100 column), may be damaged if the top plate is removed over
the key handle on the adapter rod.
7
Check the O-ring [108] on the outer rim of the top plate for visible signs of damage.
Replace if necessary.
8
If necessary, remove and replace the O-ring(s) [102] inside the top plate for columns
50 or 70. For column 100 remove and replace the adapter rod seal {103} if it has
been damaged.
The O-rings in the top plate are difficult to remove and should only be re-
placed as part of an annual service or in case of visible damage or suspect-
ed leakage.
Note:
9
Check the O-ring [111] on the threaded end of the adapter for visible signs of damage.
Replace the O-ring if necessary:
a
Remove the old O-ring.
b
Cover the threads on the adapter with Parafilm™ or other plastic film.
c
Take a new O-ring and roll it onto the adapter.
d
Remove the Parafilm.
Reassembling the adapter rod and top plate
1
For the 100 column only: Screw the top end cell [402] back by hand. Ensure that it
is screwed tight against the adapter plate.
2
Screw the adapter tubing with O-ring into the adapter, finger-tight only. For column
100, always ensure that the top end cell is in place before screwing the adapter
tubing in place. Fit the tube connection [109] on the opposite end of the adapter
tube.
The tube connection [109] must be connected in the correct direction, i.e.
the end that has the connector with a smaller diameter shall be connected
to the system end (see exploded diagrams in Appendix A-C according to
the column type).
Note:
3
Slide the top plate onto the adapter rod from the threaded end. Apply a small amount
of ethanol 20% (v/v) on the adapter rod for easier movement of the top plate along
the adapter rod.
122
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
6 Maintenance and service
6.2 Performing maintenance and service
