The motor hums but will not start
Dear Sir, The motor is humming, because as you noticed, the capacitor is faulty. To change the capacitor, one has to open the machine, by removing the covers. Usually a screw driver TORX T15 is used. The capacitor is very easy to locate and with a little knowledge it can be replaced. Now the BIG PROBLEM...is WHY, the capacitor got faulty. In many cases the valve that controls the pressure and shuts off and on the machine...called the SPILL VALVE...is faulty. If this is so, the machine starts going on and off...then the capacitor gets damaged. So this spill valve and maybe intake and suction valves must be replaced. One can try the machine with a new capacitor and observe what happens. Jerking machine...means Spill Valve damage and/or suction and delivery valves damage.
Thanks,
Fulltech.
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