Brian - UL will generally accept a Class 1 air filter. These are evaluated against UL 900.
Otherwise, it depends on the standard for the end product what requirement apply. I recall 60950-1 accepting HF-1. Peter Tarver From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Monday, September 19, 2016 09:43 But what type of Fault Testing or Risk assessment needs to be done regarding the filter? With the filter removed, the instrument passes the construction requirements for a Fire Enclosure. But with the filter installed and because of its close proximity to the fan/blower; 1. does this filter have to meet Flammability requirements? Does the filters have to be certified (expensive)? UL 94 HF-1?, UL 94 HF-2?, UL 900? How are these ratings/certifications viewed outside of North America? Will they have to meet local requirements?? 2. If the fan/blower is certified and limited energy circuit does the filter have to have any kind of rating or certification? In other words, with a certified fan/blower, do I have to consider the fault condition of the fan failing in a way where it could catch the filter on fire? 3. How is a fault and/or risk assessment performed on an air filter? 4. Are we responsible to consider the hazards from a burning filter when it is dirty? How would we know what type of contaminates might collect in a filter? 5. If the filter we provide is UL 94 HF-1 and UL 900 rated/certified, what would stop our customer from replacing it with whatever filter they wanted? Are we responsible to include a warning label and statements in the manual regarding this? Example, "Use only Air Filter part number XYZ". 6. Any other suggestions or issues that we are not considering? Thanks in advance. Have a nice day. The Other Brian ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org<mailto:emc-p...@ieee.org>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org<mailto:sdoug...@ieee.org>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>> The information contained in this message may be privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete or destroy any copy of this message! - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
