5
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
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.
NOTICE
Always wear gloves when handling the adapter rod to avoid
fat from unprotected fingers and scratching the sealing surface.
2
Screw the adapter rod onto the adapter. Tighten by holding the adapter rod with a
wrench and then tighten using another wrench.
The parts can loosen after using the column several times. Check that the
adapter rod is tight before performing each packing procedure.
Note:
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
135
6 Maintenance and service
6.2 Performing maintenance and service
