Lecture 9: How to Detect Leakage in Air-Conditioner? ( HVAC Course )

As an HVAC engineer, You must have knowledge of technician work. so Here some day to day work given below of AC Technician Like:

Refrigeration System Unit (Technician Work)

1)1^st Step:  Check the Leakage in the Unit.

2)2^nd Step: Use Vacuumization vapor Refrigerant.

3)3^rd Step: Do Gas Charging.

4)4^th Step: For Recovery the Refrigerant.

Equipment Required

Vacuum Pump with 1-4 horsepower (vacuumization pump)

AC manifold gauge set ( Gauge Manifold )

Nitrogen Gas

Refrigerant (According to AC)

Torx hex key (for Unscrew)

And some patience (more on it later) ?

Gauge Manifold has three pipes:- 1)Low pressure Line (Green) 2)Common Line (Yellow) 3)High Pressure Line (Red)

Note:- For Checking the leakage in pipes we mostly use nitrogen (Because it is suitable for environment.

Refrigerant is store in condenser in small unit in new system (but in large unit system refrigerant we store after installation)

For Providing Nitrogen in the system:-

:- Nitrogen cylinder is connected to the common point of the manifold gauge.

:-  Low pressure gauge is connected to the liquid line of service valve.

:-  High pressure gauge is connected to the suction line of service valve.

then after all these connection we would start following step for leakage detection in air conditioner

First Open the suction Line Service valve

Second Open the Liquid Line Service valve

Third close low pressure manifold gauge

Fourth open high pressure manifold gauge

Fifth open Nitrogen cylinder.

We must know the max. or min. pressure of refrigerant.

According to Refrigerant Apply nitrogen pressure 25% Extra in the system for leakage detection

For Complete detail on how to check leakage check out our video(click here)

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