"Hot" Modine blower motor?

[_kev]

Good afternoon everyone. New member here, thanks for letting me join.

I am a professional painter and just installed a new Hot Dawg HDS 45k in the storage side of my spray booth away from the fumes on the spray side. It's been running for 2 days now and I have a question that you may be able to help with. I am on my 3rd blower and 2nd fan blade....(The first blower motor and blade were swapped out on warranty and the 2nd blower I replaced because I damaged it installing)................. and everything is currently running well. The unit is getting up to heat and properly shutting down and all seems well. My question though is how warm should the housing on the rear blower motor feel. It seems warmer/hotter than I think it should but I have nothing to compare too. It's not like it burns you when you touch it but I am just concerned about how hot it might get and if there is a problem. Also I have not been in the shop today so I don't know if it's been running a lot or shutting down frequently, it is fairly chilly here in Illinois today. I have gone in to feel it 3 times, twice when running and once just after shutdown.
Any thoughts? Did I explain things well?

Thanks again,
Regards, Kevin

 

[American Locomotive]

If the motor is not even hot enough to burn you, it's fine. Most motors are rated for a 40-50°C temperature rise, which means surface temperatures approaching 180°F are still within "safe" limits.

 

[_kev]

If the motor is not even hot enough to burn you, it's fine. Most motors are rated for a 40-50°C temperature rise, which means surface temperatures approaching 180°F are still within "safe" limits.

Thanks A L. Appreciate the input, kev

 

[gmcgeo]

Thanks A L. Appreciate the input, kev

you have this on 220v? or 110v?

 

[_kev]

you have this on 220v? or 110v?

110v. That’s right I sure hope

 

[gmcgeo]

110v. That’s right I sure hope

Yeah, just wondering why you are going through motors. it is not like Modine. Something is pulling power

 

[_kev]

Yeah, just wondering why you are going through motors. it is not like Modine. Something is pulling power

Sorry I was not clear. The first two motors were separate problems not related to heat. 1 had a bad bearing (suspected) and one I damaged when installing

 

[gmcgeo]

Sorry I was not clear. The first two motors were separate problems not related to heat. 1 had a bad bearing (suspected) and one I damaged when installing

Oh, makes more sense. sorry if i didn't ready it correctly.

 

[beltfeed]

I recently installed a Modine Hot Dawg HDS 75k in my garage. The fan motor runs pretty cool, I can put my hand on the housing and it's not hot at all. My complaint is the mounting method Modine uses is terrible. It puts a low drone vibration into the ceiling that's annoying. After looking online I find the Modine sells a rubber isolator kit to reduce the vibrations passed on to the ceiling. This is not mentioned in the install paperwork with the heater at all. The fan moves a lot of air but is way too loud. I had a Reznor for the last 25 years that finally died with a large crack in the heat exchanger. The Reznor was three times the heater as the Modine and quiet.