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The document provides a comprehensive temperature-pressure chart for various refrigerants, detailing the relationship between temperature (in Celsius and Fahrenheit) and pressure (in psig and barg). It includes conversion factors, guidelines for determining superheat and subcooling, and notes on critical temperatures. The information is essential for professionals in refrigeration and HVAC industries to ensure proper system operation.

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What is the high pressure cut out for R134a?

The high-pressure cut off switch is used to disengage the A/C compressor when the system reaches maximum pressure. Unlike your original switch, this is specifically designed for R134a as the high-pressure side operates at a higher PSI than that of R12.

What should my pressures be on 134a?

R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas) 75F (24C) 35-40 psi / 241-310 kPa 150-170 psi / 1034-1172 kPa 80F (27C) 40-50 psi / 276-345 kPa 175-210 psi / 1207-1448 kPa 85F (29C) 45-55 psi / 310-379 kPa 225-250 psi / 1551-1724 kPa 90F (32C) 45-55 psi / 310-379 kPa 250-270 psi / 1724-1862 kPa8 more rows

What should the high and low side pressures be for 134a?

R-134a System Pressure Ambient (outside) Temperature FStandard Low Side Pressure Range PSIStandard High Side Pressure Range PSI 70 35-40 145-160 75 35-45 150-170 80 40-50 175-210 85 45-55 225-2503 more rows

What is the suction pressure for 134a refrigerator?

The optimal operating pressure of an R 134a cooler ranges depending on the temperature. The evaporator (low side) typically operates around 22-25 psig, while the condenser (high side) runs about 150-175 psig.

What is the ideal pressure for 134a gas?

R-134A System Pressure Ambient (outside) Temperature FStandard Low Side Pressure Range PSIStandard High Side Pressure Range PSI 80 40-50 175-210 85 45-55 225-250 90 45-55 250-270 95 50-55 275-3003 more rows

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What should the gauges read on 134a?

As the ambient temperature rises the red gauge rises (40psi up to 225psi) and the blue gauge remains at a constant low (20psi to 35psi). The red gauge stops increasing as the fan cuts in, typically between 180psi and 225psi.

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What is the high pressure cut out for R134a?

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What should the gauges read on 134a?

r134a pressure temperature chart

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