After pressure testing i had vacuumed down to 500 microns and blocked off the system by ball valves at the charging ports and turned off the pump.
Acuum pump oil in ac system.
Vacuum pump mainly mechanical vacuum pump compressor air compressor various gas compressors and refrigerator have special requirements for lubricating oil.
This includes multiple things like hoses gauges carrying bag vacuum pump oil adapters and the ac vacuum pump itself.
To use a vacuum pump on an air conditioner first turn the pump on and open the side gauge valve which will allow the vacuum to start pulling air out of your system.
Once the valve is open let your vacuum run at full speed for 15 to 30 minutes to pull out as much air as it can.
If you cannot achieve a vacuum below 5000 it is a good indicator of a system leak a leak in your vacuum hoses contaminated vacuum pump oil etc.
Compressor oil is mainly used in the lubrication of cylinder and piston friction parts of gas compressor exhauster and piston pump as well as inlet and outlet valves.
When concerned as to how to vacuum ac system without pump one should know that it is possible but would not be that efficient.
Vacuum pump oil is used in mechanical vacuum pump of vacuum system.
Make sure the readings on both the gauges are zero move on with connecting the other end of the yellow hose on the gauge to the vacuum pump.
After replacing all the parts and the o rings and adding the ester oil i attached the evacuation pump to my ac gauge lines.
This kozyvacu mini ac vacuum pump is present in the 3rd position in this article as it offers a wide range of accessories to its user.
Once you are below 5000 microns you can be assured that dehydration is occurring and that moisture is being boiled off and removed the through evacuation process.
I should have closed the pump valve but did not.
Moisture in the ac system is a serious problem because moisture reduces the performance of the ac system and condensation of water can cause the ac system to freeze.
The contaminants from the system being evacuated can end up back in the vacuum pump oil so it s necessary to frequently change your vacuum pump oil for peak pump performance.
A hvac vacuum pump lowers the pressure inside the system to below atmospheric pressure causing water vapor to boil off and vent into the atmosphere.
Condensed water particles corrode the ac system and cause long term damage.
Now turn the pump to the on position.
Creating a vacuum deep enough to boil moisture away by using a vacuum pump on a regular basis is an.
Apparently the automatic check valve is not working and oil from the pump was.