Discharge Run Capacitor

We have all been guilty of this at one time or another weather we admit it or not. A start or run capacitor can be combined into one capacitor called a dual capacitor with three leads but can be split between two separate capacitors.

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In this video i find a great example of exactly why you should never just replace the run capacitor without at.

Discharge run capacitor. I intend to replace the capacitors on my house air conditioner condenser. How safe it depends on the voltage. Although you may have the power.

Above 100v should be done with a discharge tool. Below is a typical circuit for discharging a capacitor. When you need to work internally on the air conditioner it is imperative that you discharge the two main capacitors called the run and the start capacitors.

You can discharge a capacitor with an insulated wire that has been stripped on each end by touching the two terminals as you would with a screwdriver. The capacitor discharge equation is an equation which calculates the voltage which a capacitor discharges to after a certain time period has elapsed. The start capacitor gives a fan motor the torque it needs to start spinning then stops.

Show more show less. Normally run capacitors will be discharged through the motor windings when the power is off and start capacitors often have a resistor to bleed off the charge. Below is the capacitor discharge equation.

How to safely discharge your air conditioner run capacitor. While the run capacitor stays on giving the motor extra torque when needed. Category howto style.

Any capacitor will hold a charge after being energized. This video claims that discharging the capacitors is not necessary because the circuitry will discharge through the fan motor if you unplug while it is running. So when removing do not touch the 2 terminals until the capacitor has been discharged.

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