Capacitors for HVAC electric motors with role of storing the energy required to start air conditioning compressors or refrigeration motors.
The marking of capacitors in this category is done in the ...form of microfarad (μF, uF) with a fixed value or a variable value of the capacitor's power (from a lower value to a specified maximum).3
Types of electrical capacitors:
1) Start capacitor: an electric capacitor of this type has the role of capacitor when starting the compressor (it is also called start capacitor). It usually has a higher capacity than a simple running capacitor (minimum 70 uf). The role of the start capacitor is to provide a quick electrical impulse to start the motor (more precisely, to start the motor turning).
2) The run capacitor instead uses the load to increase the current that supplies power to the motor. A running capacitor is used to maintain the charge, having fixed values of 7-9 uf maximum.
What happens if you put a larger capacitor?
If the value is too high, an improper phase shift is created, the starting or operating current being too high. The electric motor overheats, creating operational problems.
Always follow the type of electric motor capacitor 220V or other type provided by the manufacturer in the product catalog and replace the old motor capacitor with a new one with the same uf value. Mai mult