D Plumbing The Fluidics System; Preventing Contamination; The Selector Valve - Waters Xevo TQ-S cronos Overview And Maintenance Manual

D Plumbing the fluidics system

This section provides reference information for replacing the tubing in the fluidics system.
Warning:
finger-tight screws to connect the selector valve to the source probes; use the PEEK
tubing and natural (beige) colored PEEK finger-tight screws.
Warning:
To avoid personal contamination with biologically hazardous, toxic, and corrosive
materials, wear chemical-resistant, powder-free gloves when performing this procedure.
D.1 Preventing contamination
For information on preventing contamination, refer to Controlling Contamination in LC/MS
Systems (715001307). You can find this document on
Support Documents and Downloads.
D.2 The selector valve
The selector valve is located behind the visor on the right-hand side of the instrument. The letters
etched on the front of the valve represent the components to which the associated port is
connected. Etched letters with a light background indicate inputs, while letters with a dark, etched
background indicate outputs. The following table outlines the component to which each port
connects, and whether the port is a fluid input or output.
Table D–1: Selector valve connections
Port
P
A
B
R
W
LC
S
To avoid electric shock, do not use stainless steel tubing or stainless steel
Component
Infusion pump
Sample reservoir A
Sample reservoir B
Rinse/wash bottle
Waste bottle
LC column
Xevo TQ-S cronos ion source
January 10, 2022, 715006200 Ver. 01 (previously released as Rev. A)
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Input/Output
Both
Input
Input
Input
Output
Input
Output