I have a home air exchanger that has a couple of small shaded pole motor fans and due to seizing periodically I have tried to lubricate them but ended up replacing due to eventual seizing etc.
On the last instance I thought I would attempt a more in-depth repair, the material that was intended to lubricate and keep the bearings lubricated was powdered, probably due to the heat, not the customary felt that I have seen before.
I decided to use felt pads to retain the lubricant, on the question of lubricant I decided to try Transmission fluid as this retains its properties even when very hot.
Also a couple of the rotor bars had shown sign of heating, probably as a result of the stall.
The windings still appeared in operable state without sign of heating.
Will see if this extends their life somewhat and the T.F. works!
Max.
On the last instance I thought I would attempt a more in-depth repair, the material that was intended to lubricate and keep the bearings lubricated was powdered, probably due to the heat, not the customary felt that I have seen before.
I decided to use felt pads to retain the lubricant, on the question of lubricant I decided to try Transmission fluid as this retains its properties even when very hot.
Also a couple of the rotor bars had shown sign of heating, probably as a result of the stall.
The windings still appeared in operable state without sign of heating.
Will see if this extends their life somewhat and the T.F. works!
Max.