2D-LC User Guide 325
12 Maintenance
Replace Valve Heads
Toxic, flammable and hazardous solvents, samples and reagents
The handling of solvents, samples and reagents can hold health and safety
risks.
 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.
1 Switch off the module. 2 Push the valve head to bring it to its outer position.
3 Remove all capillary connections from the valve head. 4 Unscrew the nut and remove the valve head.
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