MP Filtri ACMU, Руководство пользователя

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Appendix H
Clean working practises 43
− Do perform a statistically large enough sample of particle analysis results
( 25) to arrive at a base cleanliness level for your system.
− Do make sure that filters are correctly sized for your applications and
cleanliness you are trying to achieve.
Don’ts
− Don’t eat, drink or smoke around critical systems/processes.
− Don’t leave tools, objects, clothing or other materials etc. on surfaces or
tanks of critical systems.
− Don’t use open tanks on critical systems.
− Don’t take samples or perform on-line analysis from the top of a reser-
voir/tank.
− Don’t design/use tanks which contain crevices (internal corners etc).
− Don’t assume that if a sample looks clean, that it is. You wont be able to
see the contaminants.
− Don’t perform off-line analysis in an “un-controlled” environment. E.g.
workshop.
− Don’t rely on a single test for a capable representation of your system.
− Don’t start using your system/process until it has gone through a com-
missioning period whereby contamination levels are relatively stable.
− Don’t mix fluids into the same system. They can emulsify and eliminate
any chance of a reliable particle count.
− Don’t use unsuitable containers to take a fluid sample.