How To Read Ac Vacuum Gauge

Next connect the yellow hose to your vacuum pump and turn it on.

How to read ac vacuum gauge. We ve said it before but an engine vacuum gauge is an extremely valuable tool. Once you attach your gauges and start your engine keep rpms steady at around 1 200 to 1 500 rpm. What the ac gauge pressures mean. The red gauge and hose will connect to the high pressure port.

You will need a gauge set that connects to both your vacuum and your pressure ports on your ac system. 1 set the ac controls to max and recirculate 2. The vacuum reading should jump as the throttle closes then drop back to its normal idle reading. The gauges readings will depend on the ambient temperature.

The key is having a reliable engine vacuum gauge and then knowing how to read it properly. 65 f 18 c 25 35 psi 172 241 kpa. Note the vacuum readings and any fluctuations at each speed. How to test ac pressures with a manifold gauge.

The high side gauge needle will remain at zero the entire time. Refer to this chart for ac pressure gauge diagnosis. The blue gauge and hose should connect to the low pressure service port. Blower set to high speed 3.

Once it s running open the low and high side valves on the manifold gauge housing. 135 155 psi 931 1069 kpa. We ve put together this quick guide to reading your vacuum gauge to help you identify potential mechanical or tuning issues more quickly. High pressure gauge puerto de servicio del lado de lado de alta presion.

The key is understanding what your gauge is trying to tell you. By measuring vacuum under different engine loads and conditions you can track down problems within your engine and make the necessary adjustments or repairs. Windows can be open. A vacuum gauge is an invaluable resource for tracking down engine issues.

Now release the throttle and watch the gauge as the speed drops. Next hold engine speed steady at about 2500 rpm for 15 seconds and read the gauge. Let the pump run for 30 to 60 minutes until you see the low side dial displaying a vacuum reading of 30 inches of mercury. R 134a temperature pressure chart tabla de temperaturas y lecturas ambient temperature f c temperatura ambiental.

When you are working as a heating ventilation and air conditioning service technician also known as an hvac technician your set of gauges is one of your biggest assets. Gauges are used to read the pressure of various liquids and gases in a cooling system as well as vacuum pressure when you are pressure testing or charging the device. Low pressure gauge puerto de servicio del lado de baja presion.