Agilent Technologies 1290 User Manual page 16

1
Introduction to the Column Compartment
Column Switching Valve (Optional)
Two Column Selection
The valve can select either column 1 or column 2. The offline column is sealed
by connecting head to tail. Switching should be done when the flow is off and
the pressure is zero.
Before switching the valve, switch off the pump or set the flow to zero. Keeping the flow on
N O T E
while the valve is switched can cause exceeding the maximum pressure. This will stop
method or sequence execution.
Figure 4
Figure 5
16
Column 1 Active
Column 2 Active
1290 Infinity TCC User Manual