Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual page 138

UltiMate 3000 Series:
LPG-3400XRS Pump
c) After the stabilization time, monitor the pressure drop.
d) Tighten the connection a little more tight. The pressure will suddenly increase a little.
e) Monitor if the pressure drops at the same rate as before. If the pressure drops
significantly slower, the connection was leaking.
8. In Chromeleon, reset the upper pressure limit to the value used before the leak test.
Tip: If leakage from a pump head is observed, check also the tubing connected to
the rear seal wash system. If the seal wash tubing is not connected properly, or
if the tubing is crimped or kinked, the liquid may leak into the pump.
Page 130 Operating Instructions