30
Installation
Prerequisite
The capillary end was cut off cleanly and at a right angle to the
capillary axis with a tube cutter (order number A0569).
UNF seal
Steel capillaries are fastened with UNF seals at pressure of over
300 bar. The screw fittings of the seal are retightened with a
hexagonal spanner.
Note:
All screw fittings are available as a short or long head
version. Short-as-possible capillaries with small inner
diameters allow for a low dead volume.
Inserting the needle seal in the
syringe connection
The needle seal for the syringe connection is available as PTFE
or Teflon tube. The sample loop is filled with a syringe or a feed
pump. It is necessary for this to insert a needle seal in the syringe
connection and to fixate it with a biconical seal.
1. Insert the needle seal in the syringe connection and put a
biconical seal on the tip to seal off the needle seal.
2. Screw on the syringe connection with installed needle seal on
connection 1 of the valve.
Connecting the capillar-
ies
Steps
Figure
1. Place the biconical
seal (C) on the nee-
dle seal (B).
2. Push the capillary all
the way into the
valve connection.
3. Screw the screw fit-
ting hand-tight to
the seal.
Fig. 26
Biconical seal, capillary and
screw fitting as example of
the syringe connection (A)
C
B
A
