NOTICE
Be careful when laying down the column. Ensure that the glass
tube does not touch the tie bars and the flanges.
7
To ensure that the tie bars [901] are straight and parallel, place the column tube
assembly [B] so that the planar surface on the top bayonet [804] and bottom flange
[805] are in contact with the resting surface.
8
Insert the other centering tool into the other end of the column tube. For the top of
the column the centering tool shall be inserted so that the second mark on the tool
is in line with the top bayonet. For the bottom of the column the centering tool shall
be inserted so that the first mark on the tool is in line with the bottom flange.
B
First mark
Second mark
A
Figure 6.26: Insertion of the centering tool into the top (A) and bottom (B) of the column.
It is important that the centering tools are placed into the column tube to
the correct marking point at the respective ends, otherwise the column
will not be correctly centered.
Note:
9
Rotate the column tube so that the scale is set in the desired position.
There are different scales for stainless steel and plastic bed supports. Ensure
that the correct scale is visible.
Note:
10 Tighten the nuts [806] crosswise at the bottom flange a little at a time - use a torque
wrench and tighten first to 0.5 Nm, and check that it is possible to move the top and
bottom centering tools in and out of the column. If they cannot be moved the column
tube may not be properly aligned. If so, undo the nuts [806] and gently twist the top
and bottom to improve the alignment.
138
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
6 Maintenance and service
6.2 Performing maintenance and service
