Parts In An Air Conditioner

Pressure Test

Typically, an air conditioner consists of three primary components: the compressor, the condenser, and the evaporator. Familiarizing yourself with these components will enhance your comprehension when reviewing troubleshooting reports and suggested repair actions.

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SOME COMMON TERMS USED

01FCU

Fan Coil Unit:
referred to Indoor Unit

02CU

Condensing Unit:
referred to Outdoor unit

03REFRIGERANT

Refers to gas substance used in the refrigeration cycle

04COMPRESSOR

One of the parts in CU, acts like a pump to circulate refrigerant in the air-conditioning system

COMPRESSOR

Cost: $50

This component is widely acknowledged as the critical core of an air conditioning unit and, correspondingly, the most costly to repair. Operating on the principle of refrigeration, an air conditioning system relies on a refrigerant, a gas capable of transitioning from liquid to gas at low temperatures. One such refrigerant is Freon, commonly utilized in air conditioning systems. Within the system, Freon passes through the compressor, where its volume is reduced. This compression leads to an increase in pressure and temperature, as the molecules become more active. Consequently, the gas emerges with heightened pressure and temperature.

CONDENSER

Cost: $50

The component of an air-conditioning unit situated outside is known as a condenser. Here, the gas is cooled to transform into a liquid state, facilitated by coiled tubes aiding heat transfer, alongside a fan to enhance efficiency. Following this process, the liquid proceeds through an expansion valve, regulating its flow into the evaporator.

EVAPORATOR

Cost: $50

This marks the final stage within your air conditioner’s operation. The chilled liquid, originating from the condenser, transitions into a gaseous state upon entering the evaporator due to the area’s low pressure. Concurrently, a fan directs warm air from your room into this space. As the hot air interacts with the cold coils, it undergoes a temperature reduction before being circulated back into the room. Essentially, another heat exchange occurs here, generating the cool air present in your space. The gas exiting the evaporator returns to the compressor to initiate the cycle anew.

A pressure test is conducted to locate any gas leakage, serving as a diagnostic procedure to pinpoint the affected area. It’s important to note that this is not a repair service; rather, it’s a crucial step in determining the necessary scope of repair work. If your air conditioning system fails to produce cold air, a common issue could be the depletion of refrigerant gas, making a Pressure Test advisable (*Chargeable Service).

" LOCATING THE POINT OF LEAKAGE

  • High pressure is induced into the condenser, fan coil & refrigerant piping to identify where is the refrigerant gas leakage point.
  • Recording the gas pressure :
    Pressure Day 1 – Date : <___> : <___> psi. [A]
    Pressure Day 2 – Date : <___> : <___> psi. [B]
    Pressure [B] – [A] : <___> psi.
  • If Refrigerant leaking found; Locate point of leakage.
  • Once point of leakage has been identified, it will lead to either scenario 1 or 2.
  • Welding works will be perform to seal the leakage or replace short length of the affected area detected . Exclude new piping work if required replacement.
    Warranty : 03 months workmanship warranty on the welding part.*
  • Flushing, Purging & Vacuum entire system to evacuate excess air inside the system.
  • Charge-in of R22/R410 refrigerant up to its standard requirements.
  • Final Step: Testing & Commissioning.

Notice

If refrigerant gas leak was found, ventilate the area immediately. Toxic gas may be produced if the refrigerant gas leaks into the room and comes into contact with source of fire, such as heater, stove or cooker.

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