Agilent Technologies 1290 Infinity User Manual page 191

Cycle Name: DLW Priming Rev01
Table 36
Macro Description
The Injection Unit moves to the DLW Wash
Station, position Wash1.
The Injection Unit moves to the DLW Wash
Station, position Wash2.
The DLW system is rinsed with Wash Solvent 1
in position Waste.
The Injection Valve is cleaned first with the
content of DLW syringe (Wash Solvent 1),
followed by Wash Solvent 2 and finally, the last
wash to prepare the system for injection cycle,
rinsed with Wash Solvent 1 again.
The Atom Rinse Inj is new, available
starting with FW 4.1.X. The DLW
Actuator/Solenoid is activated, the Wash
Solvent (pump), the Needle Gap and the
Rinse Time are selectable.
A Repeat-End loop enables adding an extra
rinsing step, Valve Toggle.
If the counter is set 1 follow the described steps
below. If the counter is set to 0, the macro
finishes at this point.
The Injection moves to the Injection Valve.
The valve is switched to position Active.
Agilent 1290 Infinity LC Injectors HTC/HTS User Manual
DLW Priming
N O T E
DLW Principles and Operating Details
Macro Variable
Clean Time solvent 1 Eject Speed DLW Syringe
Clean Time solvent 1 Eject Speed DLW Syringe
Needle Gap is a parameter from Rinse Inj Atom.
The variable in this macro is: Needle Gap Valve
Clean.
The function of this parameter is to lift up the
needle in the injection port very little to allow
rinsing around the needle tip. The pressure of
the spring-loaded balls in the DLW Syringe
Holder Assembly is released by moving approx
3 mm up (default). This leaves a gap, between
the needle tip and the valve bottom, of approx.
1 mm to enable a flush at this contact point.
Stator Wash:
Counter 0 = disable Valve Toggle steps
Counter 1 = enable Valve Toggle steps.
4
Appendices
191