d'Arsonval
Member
- Location
- Michigan
Long time dweller among various engineering, and maintenance forums.
Have made random visits here over the years but have never signed up to this site until now.
Recently I've been asked to help in rekindling the repair shop's UL Follow Up Service procedure
related to Motors and Generators for use in hazardous locations. And I'm little "rusty" on the subject.
We have the most recent FUS issue of Section General, Vol 1, etc. which clearly states the constructions not covered in the procedure include Pumps, Electric Brakes, and so on.
We're being asked to repair certain UL listed waste water sewage pumps that don't appear to be covered in the FUS.
I know there are additional steps one can take such as contacting the manufacturer of a device to learn if they participate in a FUS procedure
for re-builder's by supplying, information, replacement parts, etc.
I'm getting "rumblings" that the pumps are indeed covered in UL Standard 674.
Yet... I'm a little confused for I never remember referring to 674 in other shops where employed that were authorized to rebuild hazardous location equipment.
I'm interpreting that the UL 674 standard pertains to what an actual manufacturer of a product must adhere to for a particular item/apparatus to be UL Listed...
And that UL Standard 674 has nothing to do with a re-building procedure?
Thanks for any insight or contributions you may have in helping me understand a subject I've been away from for awhile.
John
Have made random visits here over the years but have never signed up to this site until now.
Recently I've been asked to help in rekindling the repair shop's UL Follow Up Service procedure
related to Motors and Generators for use in hazardous locations. And I'm little "rusty" on the subject.
We have the most recent FUS issue of Section General, Vol 1, etc. which clearly states the constructions not covered in the procedure include Pumps, Electric Brakes, and so on.
We're being asked to repair certain UL listed waste water sewage pumps that don't appear to be covered in the FUS.
I know there are additional steps one can take such as contacting the manufacturer of a device to learn if they participate in a FUS procedure
for re-builder's by supplying, information, replacement parts, etc.
I'm getting "rumblings" that the pumps are indeed covered in UL Standard 674.
Yet... I'm a little confused for I never remember referring to 674 in other shops where employed that were authorized to rebuild hazardous location equipment.
I'm interpreting that the UL 674 standard pertains to what an actual manufacturer of a product must adhere to for a particular item/apparatus to be UL Listed...
And that UL Standard 674 has nothing to do with a re-building procedure?
Thanks for any insight or contributions you may have in helping me understand a subject I've been away from for awhile.
John