what is the pressure in the gauge with outside 90 degree temperature with freon 22
It changes based on vehicle, outside temp, and desired inside temp. Pressuse depends on ambient temperature, the higher the temp, the greater the pressure
It depends on the outside temperature but the average low side pressure should be around 35 to 40 psi and the high side should be no higher than 250 psi..........
That depends on the refrigerant type and ambient air temperature.
Check the superheat in the system.
I guess you have a heatpump or you would not be asking this. You need a set of freon pressure guages and the heater specs. Now you learn what the pressure lines are suppossed to be doing at the temperatures inside and outside and adjust the freon accordingly.
On smaller residential air conditioners the manufacturer publishes a charging chart that has the outside air temperature and the corresponding suction and liquid pressure measured by a refrigeration manifold set, gauges. If the chart is not available, you can estimate by measuring the suction pressure and then using a pressure temperature chart for your refrigerant and trying to maintain a 35 degree to 40 degree temperature at the condensing unit or compressor. The other measurement on larger units is the subcooling measurement, measure the actual liquid line temperature and compare the liquid pressure using a pressure temperature chart and also checking for bubbles in the liquid line sight glass. On larger systems after the subcooling has been checked then the superheat has to be checked and the thermostatic expansion valve adjusted if necessary. To check the superheat, measure the suction pressure, convert to a temperature and then measure the actual suction line temperature. The difference is the superheat, should be 6 to 20 degrees depending on the system.
The truck doesn't have a freon pressure gauge. That is a tool that the repairman/mechanic has.The truck doesn't have a freon pressure gauge. That is a tool that the repairman/mechanic has.
Yes, fridges use freon as a coolant to maintain their temperature.
You will definitely lose all of your Freon when you replace the high pressure switch. Once the high pressure switch is loosen the Freon will begin to access the system.
The density of Freon can vary depending on the specific type being referenced. However, commonly used types like Freon-12 (dichlorodifluoromethane) have a density of around 1.2 grams per cubic centimeter at room temperature and pressure.
You can add Freon to your 1999 Chevy cooling system through the low pressure port. Connect your Freon bottle to the low pressure port and release the Freon into the system.
Connect the pressure gauge to the high pressure port. Discharge your Freon into the low pressure port. Stop the Freon discharge when the Freon engage reaches the appropriate level.