Web10. Compressor suction and discharge pressures for R407A, R407F, R448A and R449A differ from R404A/R507. It may be necessary to reset the pressure cut-outs to suit the different pressures of the replacement refrigerant. This procedure should be done carefully to avoid exceeding the recommended operating limits of the compressor. WebForane 404A Pressure Temperature Chart Forane 404A, R-404A, Pressure Temperature Chart, PT Chart, HVAC, refrigeration, air conditioning, refrigerant gas

Normal 404a operating pressures? - HVAC-Talk: Heating, Air ...

WebJun 2, 2024 · The liquid line, or Discharge or whatever you want to call it, is the smaller of the pipes going into the compressor. Suction line is always bigger than the liquid line. Suction or low side is the Blue side, always; it’s the lower pressure side of the system. Let’s learn how to read a refrigerant manifold. Step 1: High-Pressure Connection It should be running at 10-20psig (10 is ideal) on the suction side if working properly. And the high side should be about 180 or so. What should the high and low side pressures be for R-404A? When the temperature inside the freezer is at about 0°F, the low side pressure should be 8-10PSIG for R404A charged units. … See more What will cause the suction pressure to rise? Higher than normal pressures indicate the refrigerant is not transferring its heat into the air passing through … See more R-404A Pressure Chart R-404A rose to prominence in the late 1990’s with the phasing out of CFC and HCFC refrigerants like R-12 and R-502. There had to be a … See more longtext vs longblob

What is the low side pressure of a freezer using R-404A ... - Answers

WebJan 3, 2013 · What should the low pressure be for a 404a refrigerant on a freezer? 18-20psig suction 250-270 psig discharge In freezers pressures are ok .I got it ,but the mention pressure of suction 18-20 ... WebMar 4, 2013 · It seems possible because R-134a uses POE oil as needed by the R507a (or similar R404a). In fact, R507a at your desired -40C would have the evaporator pressure of about 6-psig (virtually the same as the R134a at -20C). Now if the R-134a condenser was at 50C this indicates a pressure of 177-psig. WebIf an R404A commercial freezer has design conditions of -20° evaporator ... Assume the above freezer evaporator temperature remains at -20°, but the condenser is designed for a 25° condenser ... 10.5 to 1. Which situation will damage the above freezer compressor quicker, lowering the suction pressure by 5 psig or raising the head ... hop jacks nutrition info