404a Reach In Freezer Pressures

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404a Reach In Freezer Pressures

I just wanted to know what are normal pressures for freezers. Its 404 refrigerant. I have worked on true reach in freezers and I was told my low side should be at 13 psi and high side at 250. … Dont have the guagues for 404A.
Usually depends on the temp of the conditioned space. Most freezers run about a minus 10 evap to get a 0 degree box. So look for a low side .
Physical Properties of Refrigerants. Environmental Classification. Molecular Weight. Boiling Point (1 atm, ˚F). Critical Pressure (psia). Critical Temperature (˚F) .
30 suction pressure is definitely a bit high. … It’s impossible to say how long it would take to reach temperature because areas can be different .
R134A runs at 0psi on the low side and 404A runs at 55psi. Doesn’t matter what machine you have, that’s the pressure they should be running .
Have not worked with 404A before and I’d like to know what the normal range of operating pressures would be for a cooler at 34 degrees with .
warm products in this same glass door reach-in freezer for about a week. … The pressure on the low side reads 33.5 psig (0°), and the high side reads … (R- 404A) because the 9° of condenser subcooling indicates there is .
I HAVE A 404A WALK-IN FREEZER I JUST REPLACED THE … OR ABOUT A -20 SATURATION TEMP WITH A 300 HEAD PRESSURE.
18-20psig suction 250-270 psig discharge In freezers pressures are ok .I got it , but the mention .

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