Re: [PSES] Warning Label: Disconnect from Mains

[dougp01]

I agree with Colorado Brian. It seems that more and more, IEC-based standards are requiring a full explanation of symbols and warnings in the user documentation. As it turns out, many clients of mine leave the user manuals to the very last and they are usually very lacking. Where possible using symbols only is an economical option.  One exception to using just symbols might be in certain industries where using an ANSI/IEC compliant labeling system is required.  ‎In this case some verbiage is required. The text should simply describe the problem and how to avoid it. Nothing more. Proper use of the keywords Danger, Warning, and Caution are also essential.  Since overstating the hazard is not advisable. All the best, Doug From: Brian Gregory Sent: Friday, May 1, 2015 11:31 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Reply To: Brian Gregory Subject: Re: [PSES] Warning Label: Disconnect from Mains     ---------- Original Message ---------- From: "Kunde, Brian" <brian_ku...@lecotc.com> Date: Wed, 29 Apr 2015 18:54:17 +0000 Brian, thanks for your input. Can the potential hazard be addresses without English Text which may be misunderstood by those unfamiliar with the language? Wouldn’t Symbols Only be better?   [Colorado Brian here]  Symbols ON the equipment are sufficient, and often preferred.  John's answer is also correct, that the symbols (even fully JIT-compliant ones) need explained, in all the appropriate languages (as defined by ND's), in the supplied documentation.  Any additional needed information can be added at this point by the manufacturer.    So if AHJs, NRTLs, etc. like to see some kind of warning on the outside of electrical equipment, then won’t the Hazardous Voltage Warning symbol alone meet this requirement WITHOUT any Text?    As the Machinery Directive states, “Information and warnings on the machinery should preferably be provided in the form of readily understandable symbols or pictograms.”   Bingo;  warnings on the machinery....   And in the case given in the 61010-1 standards, it doesn’t say that you have to use Text, but what the warning marking should state. A symbol or symbols can “state” or have the same meaning as text without the concern of the User needing to be able to understand the language of the text.    I advise being verbose as possible in the documentation;  this can be in digital format, so needn't incur much additional expense.  You, as the manufacturer, are now officially on record as directing the end user:  DO this, NOT that... etc.   Wordy labels can be expensive, and possibly confusing (esp. when many languages get involved);  I was always perfectly happy with symbols.   CYA, baby....   The Colorado Brian       From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com] Sent: Wednesday, April 29, 2015 10:39 AM To: Kunde, Brian Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: Warning Label: Disconnect from Mains   Our NRTL asks for the warning “No User Serviceable Parts Inside”  when that is the case but that is relative to products complying with UL/EN 60950-1 and EN 60204-1.   Of course that needs to be translated into all appropriate languages too.   -Dave   From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Wednesday, April 29, 2015 10:21 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Warning Label: Disconnect from Mains   Greetings.   We make laboratory equipment designed to the requirements of the IEC/EN/UL/CSA 61010-1 Ed. 3 standard.     Most electrical equipment has at least one warning somewhere visible on the outside of the equipment that states something like, “Disconnect Power Before Servicing”. Where does this requirement come from? I see no such requirement in the 61010-1 standard.   The 61010-1 does say, “If the instructions for use state that an OPERATOR is permitted to gain access, using a TOOL, to a part which in NORMAL USE may be HAZARDOUS LIVE, there shall be a warning marking which states that the equipment must be isolated or disconnected from the HAZARDOUS LIVE voltage before access.”   However, if our users do not need to gain access inside our equipment, then I assume such warning is unnecessary.   We used to have a warning label on any tool assessable panel that has hazardous voltages behind it. However, I do not see this as a requirement in the 61010-1.  In the past, we have had inspectors write us up for not having such labels on all panels with hazardous voltage behind it. Does this requirement come from somewhere else? Are the inspectors wrong?   The label we commonly use has the Symbol 12 (hazardous voltage warning) and English Text that states something like, “Disconnect Power Before Servicing”. However, when our products are sold into non-English speaking countries, we sometimes get dinged for the English Text; especially in French speaking counties.  So, if such a label truly is required, can we get away with only using the Symbol 12?, or can we use a label with a combination of symbols, such as Symbol 12 and maybe the ISO 3864-2 Disconnect Mains Plug symbol?  Is text of some kind required or can we just use symbols?   Any suggestions or recommendations?   Thanks to all for your input.   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. 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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> 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> - ---------------------------------------------------------------- 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> - ---------------------------------------------------------------- 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>