Motor Is Sparking
the suction is good but the other day the thermoprotector tripped and i reset it and it has not tripped since.
when i looked into the top of unit i can see what looks like sparks or red flashes coming from the top of motor.is this normal?
the cv353 unit is 10 years old . does it sound like the motor is going bad. thanx jeff
Where the armature meets the brushes there is a little spark. It doesn't wrap around the entire armature. As a motor gets bad the sparks increase, causing heat, and tripping the thermal breaker. Yes, it sounds like your motor is on its way out. You could replace the brushes and see if that helps but much more often then not, replacing an old motor is the best way to go. Once they have reached there expected usage hours they are supposed to be replaced. There are too many components on them that are sufficiently worn.