Agilent Technologies InfinityLab LC Series User Manual page 133

9 Maintenance
Maintain the Column Switching Valve
1 Remove capillaries from ports.
2 Loosen each fixing stator screw two turns at a time. Remove the bolts from
3 Remove the stator head (and stator face if applicable).
4 Remove the stator ring.
5 Remove the rotor seal (and isolation seal if damaged or contaminated).
6 Install the new isolation seal (if required). Ensure the metal spring inside the
7 Install the new rotor seal.
8 Replace the stator ring. Ensure the stator ring is flush with the valve body.
9 Place the new (if required) stator face in place on the stator head. Reinstall the
10 Insert the stator screws in the stator head. Tighten the screws alternately two
11 Reconnect the pump capillaries to the valve ports.
Wrong use of the System Pressure Test may damage valve.
C AUTI ON
Always select an appropriate pressure limit for the test. Do not exceed the

maximum pressure of pressure sensitive components, for example, set the
Maximum Pressure to 800 bar, if an 800 bar Quick Change Valve Head is
installed.
12 Perform the System Pressure Test to ensure the valve is leak tight.
Agilent InfinityLab LC Series Multicolumn Thermostats User Manual
the head.
ring faces towards the valve body.
stator head.
turns at a time until the stator head is secure.
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