Evacuation and auto ac system air contamination

Evacuation and Auto A/C system air contamination.

Evacuation and Auto A/C system air contamination.

Every time the auto A/C system is opened for a component replacement or any other type of service the service must be properly evacuated. Pulling a deep vacuum will ensure that all the ambient air that went inside the system while it was opened will be evaporated out of the system.

The negative impact of air contamination on the ac system will be noticed right away. Some of the signs of air contamination are noisy compressor operation and decreased overall auto ac performance. The air can’t be condensed inside the air conditioning condenser and only occupies the space of the refrigerant making the condenser less efficient and not allowing the process of de-superheat, condensation and subcooling that happens in the a/c condenser.

Auto A/C system Air contamination field test:

With 0% air contamination

High Side :165 PSI

Low Side: 32 PSI

Condenser temperature differential:38 Degrees

 

With 7.7 % Air Contamination

High Side : 200 PSI

Low Side: 31 PSI

Condenser temperature differential : 65 degrees

 

With 18.9% Air contamination

High Side:400 PSI

Low Side 45 PSI

Condenser temperature differential 102 Degrees

 

What damages could cause the air contamination in the car ac system.

Auto A/C system air contamination rises the overall pressure in the system. Higher than normal pressures will force the ac compressor. Higher pressures cause higher temperature that could change the oil viscosity and properties. A/C system air contamination will keep the condenser fan assembly operating at maximum capacity because of the inefficiencies of the condenser to change the refrigerant from vapor to liquid.

 

How to check for auto ac system air contamination ?

A refrigerant identifier can be used to quickly check for air contamination and refrigerant cross contamination.

 

Do you need assistance checking your auto ac system for air contamination?

Auto A/C Repair LLC. provides auto ac repairs near your area. Call Today to have one of our ASE certified mechanics check your air conditioning system for air or other contaminants in your vehicle’s ac system.