Results 27 to 34 of 34
09-18-2011, 01:14 PM #27
09-18-2011, 03:04 PM #28
I am sorry but I still stand by the physics of it , If a line some thing goes thru is stopped up no matter where it is in the system is going to cause some type of adverse/unwanted operating condition and pressure changes . I am one of those have to see to believe it guys and the pumpdown test just does not make sense to me. A hot gas valve for instance if I am not mistaken traps a small amount of hot gas out of the compressor before it goes into the condenser and stores it behind the H/G valve and then the gas is used during the defrost cycle of ice machines and other types of refrigeration applications. My point is that we are creating a little electrically controlled mini restriction and using it to our advantaged ,but it is controlled and planned and therefore does not create any adverse or unwanted operating conditions. Which IMO an uncontrolled line restriction is going to cause some type of pressure change somewhere in the system. I realize that refrigerant is a strange beast sometimes especailly in large quantities or in elaborate piping schemes where it changes state many times . But physical space is physical space and only so much any thing can fit in a predetermined space . Also I wanna say that I do NOT know it all ,I just think simple things should be kept simple. I am always willing to learn new things and feel like knowledge is the best tool any tech can have. Sorry if I sound"that way" I just feel like right is right and when there is an equation that does not have variables ,there should be none added for the sake of conversation."I just think things should work properly"
Freon is a brand name-word
09-18-2011, 03:15 PM #29
09-18-2011, 10:13 PM #30Professional Member
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- Mar 2011
- Parker, Colorado
09-18-2011, 11:03 PM #31If your not getting the results you desire then change. People change from either desperation or inspiration.
09-18-2011, 11:11 PM #32Professional Member
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- Sep 2008
- Cedar Rapids, IA
09-19-2011, 08:30 AM #33
09-19-2011, 11:25 AM #34Professional Member
- Join Date
- Jul 2007
- New Jersey
It doesnt matter what the dry bulb is indoor or outdoor for the coil to freeze. As soon as you said 180 head and 50 suction, my first "guess" was low charge. 50 sat temp is 25-26 = below freezing.
Any moisture, humidity or condensate is gonna freeze on that coil. And unless the tstat satisfies and the fan stays in ON, its gonna keep freezing and spreading.
You head is also too low for an 80° day. I would like to see in the 230 - 260 range. But anything under 200psig for R22 head pressure, either theres an issue, or the darn thing shouldnt even be running.
But no ideas count with limited info giving. SH/SC is a must for this type of question.
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