Asked by: Fara Porres
asked in category: General Last Updated: 14th February, 2020

What are the symptoms of a capillary tube metering device system with an overcharge of refrigerant?

Symptoms of this overcharged system include: High discharge temperature. High condenser subcooling. High condensing pressures.

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Just so, what happens when a capillary tube system is overcharged?

If a cap tube system is overcharged, it will back up the excess liquid into the condenser, causing high head pressures. The pressure difference between the low and high sides of the system will now increase, increasing the refrigerant flow rate to the evaporator and overfeeding the evaporator, causing low superheats.

Furthermore, what causes refrigerant to flow through a capillary tube metering device? During operation as the high-temperature-high-pressure-subcooled-liquid-refrigerant from the liquid line enters the capillary tube its flow is restricted through the device. As the refrigerant flows through the capillary tube, its pressure begins to drop and some of the liquid boils into a vapor.

Similarly, what are the symptoms of an overcharged AC system?

In summary, there are seven symptoms or telltale signs of a system that has too much refrigerant.

  • High discharge temp.
  • High subcooling in the condenser.
  • High pressures in the condenser.
  • Higher condenser splits.
  • Normal-to-high evaporator pressures.
  • Normal superheats.
  • High compression ratio.

What happens when you add too much refrigerant?

The main danger with too much refrigerant inside an air conditioner is that it can damage to the compressor. The excess refrigerant will collect inside the compressor and lead to subcooling, temperatures below normal. The extra refrigerant can also flood the compressor and damage its mechanical components.

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