Help Identifying Correct Classification of Haz Loc Electric Motor

[DwainMarc]

I need to replace an electric motor that is currently installed in a hazardous location (classified) area. The data plate reads as a Class1 Group D motor. The "division" designation is not on the data plate. Picture of motor and data plate is attached. Should I just assume DivI and just be done with this?

 

[waross]

Bill
--------------------
Ohm's law
Not just a good idea;
It's the LAW!

 

[FacEngrPE]

Class 1 = vapors
Division 1 = always present
Division 2 = infrequently present.
Group D = Things like propane.

Either order a motor suitable for division 1 (conservative), or verify the area classification with the process engineer.

If this is one of the kinds of process plants for which specific NFPA guidance exists you should also consult that, for example:
[ul]
[li]NFPA 58 Liquefied Petroleum Gas Code[/li]
[li]NFPA 59 - Utility LP-Gas Plant Code[/li]
[li]NFPA 820 Standard for Fire Protection in Wastewater Treatment and Collection Facilities[/li]
[li]etc.[/li]
[/ul]
List of NFPA Codes & Standards, no charge access is available

 

[mpparent]

Old motor nameplates, I believe, were Div 1 capable (going by memory, so double check me on that). However, as described previously, check w/ your process engineer to ensure Group D is still applicable. Often-times in the plant where I worked, process chemicals were changed routinely and motor specifications had to be carefully coordinated and at times, motors changed out to meet new process requirements.

The question(s) I'd ask is: "where is the motor being installed and is it near an equipment material opening, such as a process dryer outlet or the like?"

Mike

Mike

 

[dpc]

I would assume Division 1. Per NEC, if the area is designated Class I, Div 2, ordinary squirrel-cage motors can be used. If the motor has commutators, sliding contacts, etc, it has to be listed for Div 1, even in Div 2 location. So it would be rare to see a motor labeled Class 1, Div 2.

But more importantly, someone has to decide on the proper classification for the area, regardless of what the existing motor is.

 

[itsmoked]

Find it interesting both the Class and Group and even model numbers are all X'd out.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[danw2]

'Rebuilt' tag have anything to do with the xxx'ing?

 

[Compositepro]

There are two lines with class and group. Only the second line is crossed out, probably indicating that the motor is only rated for one class and group.

 

[RedSnake]

Electric motor for hazardous
locations class 1 group D
No F xxxxxx
Caution to prevent ignition of
hazardous atmospheres this
motor should not be installed in
an area where vapors or gases
having an ignition temperature
less than 280 deg C are present

Best Regards A

“Logic will get you from A to Z; imagination will get you everywhere.“
Albert Einstein