Leak Sensor; Vacuum Degasser - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

UltiMate 3000 Series:
LPG-3400XRS Pump

2.14 Leak Sensor

A leak sensor is installed inside the pump. If liquid collects in the drip tray under the fluid
connections, the leak sensor reports a leak. The Status LED on the front panel door
changes to red, a beep sounds and an error is reported in the Chromeleon Audit Trail.
When the leak sensor reports a leak, eliminate the cause for the leakage and dry the leak
sensor (→ page 105).
Leak detection is enabled as a standard when the pump is shipped. For more information, see
section 5.4.8 (→ page 84).

2.15 Vacuum Degasser

The pump contains a vacuum membrane degasser with four independent channels to
remove air bubbles trapped in the solvents. Dissolved gases can cause many problems and
must be kept to an absolute minimum for best performance. The vacuum degasser contains
a vacuum chamber in which a vacuum is generated to degas the liquid. The vacuum in the
channels is kept at a constant level.
Degassing is enabled by default.
Tip: Normal phase eluents usually show only a low concentration of dissolved
gases. Therefore, it is normally not required to use a degasser with these
eluents.
If the UltiMate 3000 system includes a WPS-3000TXRS autosampler, you should degas
also the wash liquid on a continuous basis. The procedure how to prepare and install the
wash liquid lines is similar to the steps for the solvent supply (→ page 60). For more
information, see the Operating Instructions for the WPS-3000TXRS autosampler.
Observe the general precaution for degasser operation (→ page 85).
Page 28
Fig. 12: Degasser channel inlets and outlets
Operating Instructions