Installation guide

UltiMate
®
3000 Viper™ Capillary Kits for Intelligent LC (LCi) System Solutions
Quick Installation Guides
Page 4 Rev. 02 January 2010
© 2010 Dionex
Figure 4: Schematic for tightening a Viper fitting
Attach Viper to the target thread and tighten the screw slowly until you feel the very first
resistance. This is the 0° mark. Do not use tools other than the black knurl for opening and
closing a connection.
Tighten the screw clockwise to an angle between 0° and 45° and start operating your LC system
at the desired working pressure. Verify that all connections seal properly. Usually, the Viper
fitting is tight for pressures up to 1,200 bar (17,400 psi) after the first attempt.
If leakage occurs under these conditions, tighten the screw(s) gradually further until the
connection seals properly. Do not turn the screw beyond an angle of 90° to avoid damages of the
PEEK seal by over-tightening. Do not apply brute force.
To extend the life-time of Viper, open and close connections only at atmospheric system
pressures. Opening and closing Viper connections at high system pressures may reduce the life-
time of the fitting system.
If you are unable to get a Viper connection tight, call your local Dionex representative or replace
it with a new capillary.
Figure 5: 10-port valve equipped with Viper fittings