Instruction manual

9. Technical Information
9-10
RF-20A/20Axs
 Connecting Tubings
1
Mount a male nut and a ferrule to the tubing.
Fig. 9.11
2
Insert the end of the tubing, with the ferrule on it,
into the appropriate opening. Then tighten the
male nut.
The ferrule will be secured on the tubing.
Fig. 9.12
NOTE
Use the following as rough guide for the degree of
tightening to tighten a male nut with a wrench when
connecting the PEEK tubing with an SUS ferrule and a
male nut.
• 6-mm male nut:
Tighten securely by hand and tighten another 120°
(approx.) with a wrench.
• 8-mm male nut:
Tighten securely by hand and tighten another 90°
(approx.) with a wrench.
After connecting the PEEK tubing, pull the tubing to
check that it does not come out.
Tubing
Male nut
Ferrule
!CAUTION
• Install stainless steel male nuts and ferrules
on SUS tubing, and resin male nuts and
ferrules on resin tubing.
If resin male nuts and ferrules are mounted on
SUS tubing, the connection can be loosened
easily and leakage may occur.
Perpendicular
!CAUTION
• Insert the tubing completely into the opening,
until it butts against the end of the opening.
Otherwise, dead volume will be created and may
cause chromatographic peak broadening.
• Do not overtighten the male nut.
Otherwise, the threads will be damaged.