Hi Dave- Thanks- tried oiling them- one motor cooled a little bit- the other ( on the left facing the rear, motor toward the stovepipe) didn't seem to cool at all. Tried what you suggested with the coal trol, but was unable to find a way to monitor the motors- looked at the manual, watched the video again, but couldn't figure it out. I can only hold my hand on the hottest motor maybe 5-10 seconds before it's too hot. A little longer on the cooler one. I don't know what's normal with these.
Once again, I really appreciate your help. You helped me earlier in identifying the Hyfire II vs the Hyfire I, etc. I bought the unit, cleaned it up, re-painted it, replaced all the gaskets, ducted it direct to my hot air plenum with 14" off the hot air jacket and a duct fan, two 7" cold air returns hooked directly to the convection blowers ( similar to the set-up you display on your unit) I had the cold air returns tied tight to the convection blower intake, but loosened the one that was hottest hoping that would help. It looks like you have yours a little distance away. Anyway, didn't help cool it off any. Other than my concern with the motors, it's working great all day. House is holding steady at set point of 68 degrees. The one thing I didn't do when I had it all apart was any maintenence on the motors, like cleaning the squirrel cage, oiling, etc. Can't believe I forgot about that.