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As refrigerant courses through your typical residential air conditioning system (one consisting or a direct: expansion evaporator coil and an air-to-air condenser), its state changes from a vapor to a liquid and then back to a vapor. For the system to produce years of proper cooling, it is imperative that the refrigerant be in the right state at the right time in the right location. As we cannot see inside of the system piping and components, how can we tell just what state the refrigerant is in? By taking superheat and subcooling measurements.
Superheat
Superheat is the amount of heat added to a dry vapor, in the absence of liquid, to raise the vapor temperature above its boiling point (saturation point) corresponding to
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Troubleshooting single-phase refrigeration compressors requires a technician to have a proficient understanding of capacitors. The start capacitor is one of two types of capacitors that can forward on single-phase compressors. Understanding how to troubleshoot and replace a defective starting capacitor is essential when working with these compressors.
The start capacitor is used to boost the starting torque of a compressor’s motor.
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