Servicing the stainless steel
adapter bed support
Disassembling and servicing the stainless steel adapter bed support
This procedure assumes that the top plate and adapter have been removed from the
column (see Removing the top plate and adapter, on page 49).
1
Use an Allen key to remove the screws [401], washers {412} and O-rings {413} on
the adapter [501].
2
Remove the bed support [301].
NOTICE
Always wear gloves when handling the bed support to prevent
fat from unprotected fingers coming into contact with the bed
support.
3
Remove the scraper seal [605] and O-ring [604] by gently moving them up the adapter
bed support a bit at a time around the circumference.
The O-ring is secured within the scraper seal so they will most likely be
removed together.
Note:
4
Check the scraper seal for scratching and wear, and the O-ring for twisting and wear.
If damaged or if there is any doubt about their integrity, discard them.
5
Rinse the bed support with water and then inspect for signs of damage. If necessary
replace the entire bed support.
6
Clean the bed support if required, for example due to clogging as determined by a
drainage test (see Section 6.3 Performing a drainage test, on page 142), or a change
of medium type in the column. It is recommended to use an ultrasonic bath for
cleaning (see below), or alternatively compressed air.
7
Check the adapter O-ring [603] or the end cell O-ring {411a} for visible signs of
damage. If damaged, replace it with a new one.
Cleaning the stainless steel bed support in an ultrasonic bath
Procedure using the ultrasonic bath:
1
Place the bed support into a container or directly into the bath with the surface
normally in contact with the medium downwards. If the bath is not wide enough to
take the whole bed support, lean it against the side of the bath and ensure that no
stainless steel parts of the bed support come into contact with the stainless steel
edges of the bath.
112
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
6 Maintenance and service
6.2 Performing maintenance and service
