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I have a walk in freezer that is r22 refrigerant. it will not get below 30 degrees. the suction pressure is 35 psig and the head pressure is 200 psig.

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What is the head pressure for a r22 walk-in cooler


The normal operating pressure of a system running R- 22 is designed around 105 - 110 Deg. F. check the pressure temp. chart . There are variables to determine the pressures you may see. Generally 220 - 280 psig depending on load.

Oct 10, 2014 | Heating & Cooling

1 Answer

I got a container marked R22 from someone who passed away. How can I determine if it's actually R22 and not recovered R12?


Each refrigerant has its own unique pressure and condensing temperature. I suggest hooking up the container to a combination gauge and it should read 68.5-70 psig when at 44 degrees,if it's
R-22

Aug 28, 2013 | Heating & Cooling

2 Answers

Charging an air conditioning system


R22 systems should run a 68# to 70# suction pressue. If you look at the suction guage at 68# that is a 40 deg evaporator coil temp.

Nov 18, 2012 | Ruud Central System Air Conditioner

1 Answer

70 psig suction and 300 psig head pressure on 410a gas


Suction should be 105 or higher.
Check indoor fan,filter and coils.
If they are OK you have a leak in the refrigerant system.

Jul 20, 2011 | Heating & Cooling

1 Answer

Above 78F no longer works gives heat head pressure is 300 and slightly above while low side varies bet 45 and 55 psi,noise in the return. i have about 85 feet of coil run 3/8 high side and 3/4 return from...


Your head pressure is a little high, depending on the ambient temp and your suction pressure is a little low. The suction pressure should be around 68 psig, the equivalent of a 40 degree coil. You can try adding a little refrigerant, check your compressor amp draw. If head pressure keeps going up and suction doesn't come up you may have a restricted metering device or filter dryer

Jul 17, 2011 | Goodman Heating & Cooling

1 Answer

Correct suction line pressure


If it is R22 then it will be about 11psig on the suction side. This should give you a -18 degrees across the coil.

Jun 30, 2010 | True 49 cu. ft. / 1388 liter Commercial...

1 Answer

How do i charge a ruud heatpump when its 30 outside


Hi!
First of all, are you certified to handle refrigerant? If you are not then it is illegal for you to even try and charge a system. If you are certified and are a service tech then you should know how to charge a system when its cold outside.
If you are charging an R-22 system and it is 30 degrees outside then your refrigerant tank pressure is 54.9 psig. If you warm your tank up a few degrees then you can charge your system (on the suction side of the system of course)! Good luck!!

Dec 30, 2009 | Heating & Cooling

3 Answers

Normal Operating pressure for true 2 door Freezer R404A Room Under 80 degrees F Box at -10 degrees F


The pressures depend, somewhat, on the expansion device,i.e. a TXV or Cap Tube. Take a pressure reading, then convert it to a temperature. The evap temp should be right at 10 colder than the box temp. Remember, heat flows to cold so the evap has to "Lead the Load" in order to cool. In many cases, the condensing pressure is usually ambient temp, plus 30, then convert to a pressure. These are general accepted practices that have been used for many years.

Hope this helps

Jul 11, 2009 | True 49 cu. ft. / 1388 liter Commercial...

2 Answers

Pressure problems


those seem to be very acceptable numbers you are stating if this is R22 running in summer temps. Im curious what pressures you are striving for?

Jul 02, 2009 | Heating & Cooling

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