How To Use Ac Vacuum Gauges

The yellow hose can connect to any external source.

How to use ac vacuum gauges. How to use ac gauges in your car diy with scotty kilmer. First use a professional quality at least 2 inches in diameter vacuum gauge for better accuracy. Keep the vacuum gauge and hoses away from moving engine components like pulleys drive belts and radiator fans. The low side gauge is also known as a compound gauge because it can also provide a reading for vacuum expressed in inches of mercury when performing an evacuation.

How to fix ac problems. If the ac vacuum pump is hooked directly into the system it will keep losing vacuum every time the connector hose is disconnected from the pump and moisture will not evaporate effectively. How to use hvac gauges to use the gauges the flow of gas through a set needs to be understood. The blue hoses are used to connect the manifold to the low pressure side central air units suction line the color coded red mark the high pressure gauges and it s connected to the air conditioner unit discharge valve or liquid line valves.

Due to the effect of the external atmospheric. Vacuum gauge readings to accurately diagnose your engine s mechanical condition pay close attention to the next points. Here a diagram shows how gas can flow through a manifold. The left blue side of the manifold is the low side and the blue gauge is the vacuum pressure gauge.

The left side of the manifold with the blue hand valve is the low side. The blue gauge is the vacuum pressure gauge. 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. Using a refrigerant gauge is a time and money saver.

The red and blue hoses go straight to the red and blue gauges while the center yellow hose is separate. For example a vacuum pump will have. Separate passages from the low and high side fittings to their respective gauges allow the technician to check pressure and vacuum reading whether the hand wheels are in the closed or open position. The yellow hose in the center is designed for refilling the a c system with canned refrigerant during recharging and it can also be used for evacuating the system with a vacuum.

The ac gauge hoses port are not color coded but the hose is color coded. Separate passages from the low and high side fittings to their respective gauges allow one to check pressure and vacuum readings. Introduction to vacuum gauges vacuum gauges where the pressure readings are independent of the type of gas mechanical vacuum gauges bourdon vacuum gauge the inside of a tube which is bent into a circular arc the so called bourdon tube is connected to the vacuum system.