To all. Thanks for the many comments and advice. They were most helpful. Our NRTL inspector is focusing on the AC Mains driving the motor as a potential hazardous circuit. They want the Pump Assembly, or just the motor, to have UL and CSA for sales in North America. Our NRTL inspector says that evaluating motors in the field (Field Evaluation) is difficult for it would require a locked rotor test which would be impossible to do in the field and be potentially destructive to the motor. So these markings on the motor are required.
We are in the process of disassembling the pump to see if the motor has these markings, but it is being difficult to disassemble. Still working on it. The Pump Manufacturers are being unresponsive or very slow to respond to our requests. With the current part shortage problems, we are having a difficult time finding a supplier that has a product to sell us. And amongst those, we are having this compliance issue. R&D is frustrated, rightfully so, and is seeking help from our Compliance Engineering Department. Is there a test or tests that can be done in the field that would make this pump assembly acceptable to the AHJ? Ultimately, we will want a pump assembly with the Safety Marking clearly visible from the outside so there are no issues in the field with AHJs, but for now we will take whatever will get the product shipping. Thanks. The Other Brian On Thu, Jul 7, 2022 at 9:53 AM <[email protected]> wrote: > Brian, > > > > I’m curious if your NRTL has made it clear for what topic the pump needs > certification? There are many energy efficiency criteria being applied to > industrial components of various kinds these days. I cannot bring them all > to mind quickly, but water circulators are certainly a possibility, as well > as 3 phase induction motors. Energy efficiency compliance generally cannot > be judged at the incorporated level. > > > > Best Regards, > > -Lauren > > > > *From:* Brian Kunde <[email protected]> > *Sent:* Thursday, June 30, 2022 2:01 PM > *To:* [email protected] > *Subject:* [PSES] NRTL Marks on Industrial Pump Assemblies > > > > > > *External Email:* Do NOT reply, click on links, or open attachments > *unless* you recognize the sender and know the content is safe. If you > believe this email may be unsafe, please click on the “Report Phishing” > button on the top right of Outlook. > > > > I am confused and frustrated. We have an industrial product that includes > a small water recirculation tank which includes a motor/pump assembly that > is powered by 230V/360V/460Vac 3-phase. Our NRTL inspectors says this pump > assembly must have UL, CSA, or equivalent. Here is a website that shows the > type of assembly we are looking for: > > > > https://www.graymills.com/fm-series.html > <https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.graymills.com%2Ffm-series.html&data=05%7C01%7Clauren.crane%40lamresearch.com%7Cd9bf71274ca44a02bbb008da5acae122%7C918079dbc9024e29b22c9764410d0375%7C0%7C0%7C637927978970075867%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=dbrKCO2k%2BDnZlrxRp%2FkMTz%2FR5CxV0gEFs2AYKchw86U%3D&reserved=0> > > > > The trouble is, Graymills, Granger, Dayton, etc. doesn't provide NRTL > markings on the pumps that meet our functional requirements. They all say > that most of their customers do not require these marks so they only offer > a few models that do. > > > > How can this be? Am I missing something? Some say that manufacturers can > get the pumps approved as part of a certification of the entire machine, > but how can the pump be evaluated by a system integrator who doesn't > manufacture the pump, nor has any constructional information? Wouldn't it > HAVE to be done by the motor manufacturer? > > > > I keep asking our NRTL Field Inspector if he would accept such a product > and the answer is no. Our CSA inspector also says no; it must have CSA or > equivalent on the motor and/or motor/pump assembly. > > > > Any suggestions? > > > > Thanks, > > The Other Brian > > - > ---------------------------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. 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