In my experience, it's perfectly normal for a motor to operate too hot to touch.
Look at the nameplate, if it lists 'Insulation Class', it'll be one of the following;
A = 221º F
B = 266º F
F = 311º F
H = 356º F
This is the maximum allowable temperature for the windings, the frame will be cooler.
Does the motor have adequate air for cooling? Are the vents obstructed? Does it get fresh air for cooling?
If the air around it is 104º F or less, and the vents aren't obstructed, I wouldn't worry about it, especially if it's always been this hot.
Rob
Look at the nameplate, if it lists 'Insulation Class', it'll be one of the following;
A = 221º F
B = 266º F
F = 311º F
H = 356º F
This is the maximum allowable temperature for the windings, the frame will be cooler.
Does the motor have adequate air for cooling? Are the vents obstructed? Does it get fresh air for cooling?
If the air around it is 104º F or less, and the vents aren't obstructed, I wouldn't worry about it, especially if it's always been this hot.
Rob
