Electric motor out of a Saniflow Macerator. When power is applied to this motor it just makes a sort of buzzing / humming noise, if at this point the rotor is given a little flick the motor bursts into life. What is wrong with this motor, what has probably caused this fault to occur, and is it fixable?
Interestingly, the motor is filled with oil, I have never come across this before, presumably it is to help with cooling, transfering the heat from the armature to the casing, are all underwater motors built like this?, of course I have now lost some of this as I thought I was accessing a brush and oil started pouring out!