draft vent motor for Duomatic Olsen HMS72-D

sparky296 · 01-10-2009, 07:16 AM

I have a Duomatic Olsen HMS72-D forced air natural gas furnace. I am having problems with the blower that induces draft for the burners. I do not have any PVC pipes running to or from the furnace. It was manufactured in 1985. The motor freezes up after sitting overnight. It can be moved but with a good amount of resistance. I squirt a little oil into it and it seems to run fine but I don't think I am using the correct oil, just something I had on hand. I think the bearings are no good in it. I am having some estimates for a new furnace on Monday. Any idea where I can find a replacement motor or isn't it made anymore?

biggles · 01-10-2009, 08:58 AM

probably a fractional HP...Fasco motor there give us the name plate off the ID motor volts/brand/amps/frame "RPM critical" how it mounts onto the blower house check www.grainger.com or here will give you other options for a complete assembly change out http://bestbuyheatingandaircondition...gory_Code=m-im

yuri · 01-10-2009, 12:02 PM

That furnace is obsolete and should be replaced. ROTOM makes aftermarket ventor fans if you can find someone who sells them. Try here:http://www.alltemp.ca/index.php

01-10-2009, 07:16 AM	#1
sparky296 Newbie Join Date: Jan 2009 Posts: 3	draft vent motor for Duomatic Olsen HMS72-D I have a Duomatic Olsen HMS72-D forced air natural gas furnace. I am having problems with the blower that induces draft for the burners. I do not have any PVC pipes running to or from the furnace. It was manufactured in 1985. The motor freezes up after sitting overnight. It can be moved but with a good amount of resistance. I squirt a little oil into it and it seems to run fine but I don't think I am using the correct oil, just something I had on hand. I think the bearings are no good in it. I am having some estimates for a new furnace on Monday. Any idea where I can find a replacement motor or isn't it made anymore?

01-10-2009, 08:58 AM	#2
biggles Member Join Date: Jan 2008 Location: Long Island Posts: 3,250	draft vent motor for Duomatic Olsen HMS72-D probably a fractional HP...Fasco motor there give us the name plate off the ID motor volts/brand/amps/frame "RPM critical" how it mounts onto the blower house check www.grainger.com or here will give you other options for a complete assembly change out http://bestbuyheatingandaircondition...gory_Code=m-im Last edited by biggles; 01-10-2009 at 09:03 AM.

01-10-2009, 12:02 PM	#3
yuri Hvac Pro Join Date: Nov 2008 Location: Winnipeg, Canada Posts: 6,737	draft vent motor for Duomatic Olsen HMS72-D That furnace is obsolete and should be replaced. ROTOM makes aftermarket ventor fans if you can find someone who sells them. Try here:http://www.alltemp.ca/index.php Last edited by yuri; 01-10-2009 at 12:09 PM.

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draft vent motor for Duomatic Olsen HMS72-D