Agilent Technologies 1290 Infinity User Manual page 62

3
LC Injector HTC/HTS Description and Installation
Installation
The DLW option consists of two self-priming micro pumps (mounted on a
dedicated bracket), wetted parts are Ryton PPS and Kalrez (FFPM). The pump
IN ports are connected to the wash solvent bottles and the OUT ports are
connected to the DLW manifold, which is part of the assembly of the dedicated
DLW Syringe Holder. A Holding Loop separates the syringe and the DLW
actuator to avoid sample contacting these parts.
The syringe and Holding Loop are preloaded with wash solvent #1 at the start.
The sample is picked up and remains separated from wash solvent #1 by an air
gap. After loading the loop and injection, wash solvent #1 is pushed into the
system, followed directly by wash solvent #2 to flush the critical valve paths.
The DLW Syringe Assembly is moved to the wash station for further cleaning
steps and for preparation of the Syringe and Holding Loop for the next cycle.
Details are explained in
62
"DLW Cycle Step-by-Step"
Agilent 1290 Infinity LC Injectors HTC/HTS User Manual
on page 198.