AZURA® Valve Unifier VU 4.1 Instructions V6855
Basic safety instructions 5
4.6 Working with solvents
4.6.1 General requirements
The user is trained for handling different solvents.
Note recommended solvents and concentrations in these instructions
in order to avoid personal injury or damage to the device. For exam-
ple, certain chemicals may cause PEEK capillaries to swell or burst.
Note that organic solvents are toxic above a certain concentration. For
handling hazardous solvents see the following section.
Mobile phases and samples may contain volatile or combustible sol-
vents. Avoid the accumulation of these substances. Ensure good ven-
tilation of the installation site. Avoid open flames and sparks. Do not
operate the instrument in the presence of flammable gases or vapors.
Only use solvents which do not self-ignite under given conditions. This
applies especially to the use of a thermostat where liquids could get
onto hot surfaces in the interior.
Degas solvents before use and observe their purity.
4.6.2 Contamination by health-threatening solvents
Contamination with toxic, infectious or radioactive substances poses
a hazard for all persons involved during operation, repair, sale, and dis-
posal of a device.
All contaminated devices must be properly decontaminated by a spe-
cialist company or the operating company before they can be recom-
missioned, repaired, sold, or disposed (see „4.9 Service request form
and decontamination report“, p. 7).
4.6.3 Avoiding leakage
Risk of electrical shock or short circuit if solvents or other liquids leak into
the interior of the device. You can avoid a leakage through the following
measures:
Tightness: Visually check the device or system regularly for leaks.
Solvent tray: The use of a solvent tray prevents liquids get from the
bottles into the inside of the device.
Eluent lines: Install capillaries and hoses in such a way that, in case of a
leak, liquids cannot get into the interior of the devices underneath.
In case of leakage: Switch off the system. Only take the device into
operation if the cause of the leak has been resolved.
