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Requires 120VAC to start - will not start with an extension cord unless heavy duty cord is used due to voltage drop and high starting current demand of compressor motor.
This problem is caused by either the starter capacitor or the in-tank check valve. Ez to check. With no air in tank, start compressor; if motor hums or has difficulty suspect capacitor. If motor starts, partially fill tank and unplug the power. Check for air leaking at the pressure switch or air coming out of the air inlet (remove the air filter). If air leaking, replace check valve. If no air leaking, again let out all the from the tank and connect power. Allow the compressor to fill and shut-off. After the compressor fills, again listen for air leaking from the pressure switch unloader valve. If air continues to leak from unloader, replace the check valve. Good luck
Compressor over load switch is the clicking you here. check the compressor to see if it has a start capacitor if so check to see if it is good. if it dose not have one then check compressor relays make sure there in good working order.
The compressor in your refig is bad. whats happening is when you let the compressor cool down it will run for a while then it starts binding internally until it gets to the point of humming and clicking. only repair is replacing the compressor. sorry for the bad news...
unfortunaletly the hartd start is a "last resort" and you will probably need to replace the compressor/unit... (however I have had luck physically jarring the compressor during the instant I applied power to the compressor.. sounds silly, but I have had it work more than once..) hope this helps
Maybe you have the wrong voltage or line frequency? Your description leaves much to be desired. Is it old, new, used? Was it running and then suddenly stopped?
All electric compressors share a basic design with ac power pressure switch with unloader and checkvalve between the pump and the tank. When the pressure switch powers off, it unloads the compressor by releasing the air in the discharge hose. You will notice a small tire stem pin and a lever to engage it somewhere on the pressure switch. If the compressor stops before reaching set cutoff point, the air pressure remains in the discharge hose not allowing the motor to start, thus the hum you hear. Solution is to check for the proper function of pressure switch /unloader, tank check valve (if check valve leaks air back to compressor it will load motor causing hum) and extra measure check capacitor for at least 90% of rated valve. Finally, do not run this compressor with an extension cord, use more hose instead. enjoy
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