Table of Contents
What should pressures be on a 134a cooler?
22 pounds per square inch
For normal running pressures in the R134a system, at the lowest temperature, the coil should run at 22 pounds per square inch that is 45-20, 25 degrees Fahrenheit. While at the highest temperature it should be 57 pounds per square inches that is 60-20,40 degrees Fahrenheit.
Do you charge 134a as a liquid or gas?
Do you charge 134a as a gas or liquid? If you have a set of gauges, you can safely charge liquid into the low side. Just keep the low side gauge below 40 PSI while you charge. This will make the freon boil inside the charging line, it will be a gas by the time it enters the compressor.
What is R134a refrigerant?
R134a Refrigerant is a common refrigerant that is used in many air conditioning applications, usually packaged in blue colour cylinders. Due to the nature of R134a properties which is of a HFC (hydrofluorocarbon) refrigerant, it does not have any ozone depletion potential and has little greenhouse effect.
What should my gauges read on R134a?
It can be used for recharging refrigerant, or to diagnose an a/c system based on pressure readings from your gauges….R134a Pressure Gauge Chart.
| Ambient Temperature (°F) | Low Side | High Side |
|---|---|---|
| 80° | 45-50 psi | 175-220 psi |
| 75° | 40-45 psi | 150-175 psi |
| 70° | 35-40 psi | 140-165 psi |
| 65° | 25-35 psi | 135-155 psi |
What should my gauges read on r134a?
Should you turn freon can upside down?
Registered. 35 is okay for the low side under a load (engine speed raised to about 2500 RPM. At idle, it should stabilize at about 30. Turn the can upside down to help it evacuate better.
Can you charge R134A as a liquid?
If you have a set of gauges, you can safely charge liquid into the low side. Just keep the low side gauge below 40 PSI while you charge. This will make the freon boil inside the charging line, it will be a gas by the time it enters the compressor.