Adapter - GE AxiChrom 50 Operating Instructions Manual

7.2

Adapter

Problem
Adapter still in column
tube when top plate is
removed.
Adapter does not move
upwards in the column
despite applied
pressure upflow in the
process chamber.
Adapter does not move
downwards.
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
Comment Action
Reassemble the top plate onto the col-
•
umn and continue to move the adapter
upwards by pumping liquid into the
process chamber.
Undo adapter rod top and check if the
•
tubing is easy to rotate. If so, then one
of the ferrules inside the adapter is
loose and does not seal properly. Insert
a stop plug into the tube connection
and push it down to assist sealing. Raise
pressure under adapter to see if
adapter moves. Follow the instructions
under Servicing the adapter rod, adapter
tubing and top plate (stainless steel bed
support), on page 119.
In the beginning of the packing, the
•
adapter might be just above the glass
incline. Give the adapter a very gentle
push downwards approximately 0.5 to
1 mm. If this is not done immediately,
the compression will be wrong. Then
repack the column.
The scraper seal might be damaged.
•
Change the scraper seal. (See Servicing
the stainless steel adapter bed support,
on page 112.)
7 Troubleshooting
7.2 Adapter
149