Cone Wash System - Thermo Scientific Surveyor MSQ Plus Hardware Manual

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Functional Description

Cone Wash System

Cone Wash System
36 Surveyor MSQ Plus Hardware Manual
Figure 24. View of the Per Method Parameters table
The API source on the Surveyor MSQ Plus MS detector includes a self-cleaning solvent
delivery system (the cone wash). This makes the source robust and productive, greatly
increasing the number of samples that can be analyzed before maintenance is required.
The self-cleaning API source delivers a constant, low flow of solvent to the edge of the inlet
orifice. See Figure 25. This low flow of wash solvent prevents the build-up of non-volatile
components during LC/MS analysis that occurs with typical chromatographic buffers (for
example phosphates and ion pairing agents) and dramatically extends the length of time
possible for analyses.
The cone wash system consists of a cone wash pump, PEEK tubing, and a cone wash nozzle.
Red, 0.005-in. ID, PEEK tubing connects the cone wash pump to the Surveyor MSQ Plus
MS detector. Inside the Surveyor MSQ Plus MS detector, the red, PEEK tubing is connected
to one end of a union. Green 0.030-in. ID, PEEK tubing is connected to the other end of the
union. The green, PEEK tubing is connected to the back of the source block behind the cone
wash nozzle.
When you are using the cone wash system, adjust the cone wash nozzle so that solvent flowing
out its tip just touches the orifice of the entrance cone as it falls towards the drain. See
Figure 25. When you are not using the cone wash system, adjust the cone wash nozzle so that
it faces away from the entrance cone. Storing the cone wash nozzle in the 12 o'clock to
2 o'clock position helps to prevent its blockage.
CAUTION The corona needle is very sharp. Do not attempt to adjust the position of the
cone wash nozzle before you turn the corona pin knob to its vertical position.
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