Agilent Technologies 1290 Infinity II 2D-LC User Manual page 325

12 Maintenance
Replace Valve Heads
Toxic, flammable and hazardous solvents, samples and reagents
WAR NING
The handling of solvents, samples and reagents can hold health and safety
risks.
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1 Switch off the module.
3 Remove all capillary connections from the valve head.
2D-LC User Guide
Be sure that no solvent can drop out of the solvent connections when
removing them from your valve head.
When working with these substances observe appropriate safety
procedures (for example by wearing goggles, safety gloves and
protective clothing) as described in the material handling and safety
data sheet supplied by the vendor, and follow good laboratory practice.
2 Push the valve head to bring it to its outer position.
4 Unscrew the nut and remove the valve head.
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