Typically T1 - Blue run1,T2 - White run2, T3 - Orange run3, T4 - Yellow run4, T5 - Black start1,T8 - Red start2, P1 - unknown color from thermal device, P2 - Brown from thermal device. You swap the T5 black and T8 red lead to reverse direction. Your blue and white leads should be the run...
Jeb, the answer is depends. You did not give much info. Is it company or personal fan? What size, horsepower, volts, etc is the fan motor? How often is it run and how critical is it? As stated above for single phase motors it is most likely the start capacitor or contact in the centrifugal...
Prasit try looking at this website. www.helwigcarbon.com/index.asp?PID=12
Many things can cause brush problems. The commutator should have a film on it, but some chemicals or weather conditions can damage the film. You could have the wrong brush, the grooves between the commutator bars may be...
Mark, Grainger and McMaster-Carr sell motor run capacitors. You can't use the electrolytic type of capacitor or motor start capacitor. You can also find motor run capacitors at most HVAC supply places. Most will take cash if you walk in and give your company name. McMaster Carr will let...
Have you looked at the accuracy specs for your test equipment? With leakages in fractions of a microamp the error may be such that the PI will seem to vary over a wide range. I have seen the wind blow and change a PI. Also your power supply for the test set can affect the readings. If you...
Sounds like you might have "mush" wound or random wound motors with not enough bracing in the end turns. Also the winding may ony partially fill the slots. These are 2 of the cons of mush wound motors. Even with soft start there is some current inrush and the winding can move...
