Question about Husky Air Compressor. 3 Gallon Portable Electric Air Compressor L13HPD
Typically compressor duty motors are 'capacitor start' motors and do not utilize a run capacitor. You don't specify what horsepower your compressor is but if it has dual capacitors enclosed in a metallic case mounted to the motor they are both more than likely matched starting capacitors.
The centrifugal switch is responsible for removing the capacitors from the circuit at a specific rpm....so if the capacitors are remaining in the circuit, the switch is either gummed up inhibiting its ability to work properly or the contact points are pitted and holding in on occasion. If they were to stick closed leaving the the start capacitors in the circuit continually, usually the capacitors blow internally and 'open' their circuit rendering them useless.
As a side note, start capacitors usually have very high mfd (microfarad) ratings as compared to run capacitors. Start capacitors for compressors can be as low as 100 mfd to as high as several hundred. Capacitance is additive in parallel, so 'twinning' two together increases the mfd rating in the circuit. Whereas a series connection causes the total capacitance to be less than that of the smaller of the two.
Run capacitors will usually have as low as 3 mfd to as much as 50 mfd. Of course there are always the exceptions....
Posted on Nov 20, 2014
Motor is faulty and needs to be changed.
Posted on Jan 29, 2014
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Posted on Jan 02, 2017
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