MP Filtri LPA2, User Manual

Page: 61 / 72

Appendix H
Clean working practises 61
• 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.