<P> A faulty run capacitor often becomes swollen, with the sides or ends bowed or bulged out further than usual: it can be clear to see that the capacitor has failed because it is swollen or even blown apart causing the capacitor's electrolyte to leak out . Some capacitors are built with a "Pressure Sensitive Interrupter" design that causes them to fail before internal pressures can cause serious injury . One design causes the top of the capacitor to expand and break internal wiring . </P> <P> "Weak Capacitor" - Over many years of use the capacitance of the capacitor drops . As a result the motor may fail to start or run at full power . </P> <P> If a motor is running during a lightning strike on the power grid, the run capacitor might be damaged or weakened by a voltage spike, thus requiring replacement . </P> <P> IEC / EN 60252 - 1 2001 specifies levels of protection for motor run capacitors </P>

Explain the working of capacitor start and run motor