Scott, et al,
Having worked with developing markings for 60950 and 62368-1 it
is clear that there needs to be latitude given in the final marking depending
upon the details of the design and the approaches that seem to be the best fit
for the application.
At the highest level it is clear that full color, legible
complete markings are the most desirable. However, there are issues in making
that work in every instance. Joshua’s example of a marking stamped in the
stainless steel is a good example of that; it provides the marking in a durable
way where it is applicable.
Hopefully, this type of practicality will not be forgotten in
our work.
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety & Regulatory Affairs Consultant
PO Box 1067
Albany, ORe 97321-0413
503/452-1201
IEEE Life Fellow
IEEE PSES 2020 Distinguished Lecturer
<http://www.researchgate.net/Peter%20Perkins> www.researchgate.net search my
name
<mailto:p.perk...@ieee.org> p.perk...@ieee.org
Entropy ain’t what it used to be
From: Scott Xe <scott...@gmail.com>
Sent: Thursday, May 27, 2021 7:55 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Hot surface sign
Dear Josh,
Although the contrast of warning size is not perfect, there is no specific
requirement given and common on the product.
Regards,
Scott
On Wed, 26 May 2021 at 22:14, Wiseman, Joshua
<joshua.wise...@orthoclinicaldiagnostics.com
<mailto:joshua.wise...@orthoclinicaldiagnostics.com> > wrote:
Scott,
At my previous employer we had the symbol stamped into the stainless steel of a
part on the commercial griddle. A traditional label would not withstand the
heat in this instance and with-it being part of the sheet metal it me all the
cleaning and legibility requirements. It’s hard to see but I took a snippet of
one from a video of the griddle on YouTube.
Josh
Joshua Wiseman
Staff Engineer, Product Safety/EMC/Systems
From: Scott Xe <scott...@gmail.com <mailto:scott...@gmail.com> >
Sent: Wednesday, May 26, 2021 10:04 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [PSES] Hot surface sign
EXTERNAL SENDER: Verify links, attachments and sender before taking action
In some cooking appliances, there are some hot surfaces that may cause burn
injury and safety standards suggest putting a hot surface sign to alert the
users.
* Is there any specific colour requirement? Common practice is black
colour on yellow background or white colour on black background.
* Is an embossed sign black on black considered as a legible sign in EU
criteria perspective?
* In case of ink-printed label, is it put on the top of the hot surface
or next to the hot surface? If on the top of surface, the colours are
protected from heat degradation and specialized adhesives should be used to
withstand higher temperatures. Is there any test criteria for verification?
Thanks and regards,
Scott
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