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Power supply
The separations module is factory equipped with a 600 watt (W) power supply.
This power supply provides immediate compatibility for an optional sample
heater/cooler.
The power supply is protected against short circuits. It does not use external
replacement fuses, and is instead reset by powering-off the instrument and
then powering it back on.
Solvent management system overview
The solvent management system blends and delivers solvents from the
reservoir bottles to the sample management system via a pulse-free,
low-dispersion flow path. The system incorporates a serial flow path, two
independently driven plungers, and two check valves for optimal flow control.
Synchronized Composition Control
proportioning valve (GPV) actuation rate based on the selected flow rate,
composition and piston volume.
Flow path through the solvent management system:
Gradient
proportioning
valve
Solvent
A
Solvent
Solvent
C
D
1.
The in-line vacuum degasser degasses the solvent.
2.
The gradient proportioning valve blends the solvents.
3.
The blended solvents flow through the inlet check valve and into the
primary piston chamber while the accumulator piston delivers solvent,
under pressure, to the system pressure transducer.
Solvent
B
Primary
Primary
piston
pressure
chamber
transducer
Check valve
Solvent management system overview
™
™
(SCC
) determines the gradient
Accumulator
System
piston
pressure
chamber
transducer
Check valve
July 29, 2013, 715003794 Rev. B
In-line
Prime/vent
filter
valve
27
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Troubleshooting
