[Mrknight16]

I am having a problem with a Gibson straight a/c. There is no nameplate on the unit as it was scratched off all I have is the compressor model which I just replaced on the 28th of August. The model for the compressor is ZR57K3-PFV-930. The unit has a orfice metering device which I took a part and pushed nitrogen through the coil. I had good air flow when I pressurized the system with nitrogen. I have about 9 lbs of r 22 in the system and I have pressures of 55 psig on my suction and 305 psig on my head. Filters are new and evaporator fan is running. I washed the coils twice and still have a high head pressure. I could use some help please.

 

[2old2rock]

Well, it sounds like whatever killed the first comp is now going to do the same to this one.
Right orifice?
How is the air flow?

 

[Mrknight16]

The air flow is good it flows both ways from low to high then high to low. The capacitor was underrated for the compressor but I have the right size capacitor now 80uf. I took apart the orifice and used nitrogen to clear anything that was in there out. Could the compressor be running in reverse? The compressor keeps freezing over.

 

[pecmsg]

Super Heat #'s

Sub Cooling #'s

Pressures without temperature Worthless

Temperatures without Pressures Worthless

 

[Gunslinger]

They are talking about the airflow across the evaporator. What are your static pressures?

 

[beenthere]

What is the model number of the indoor coil.

 

[Bazooka Joe]

No mention of replacing the high side drier, if it has one. You may have a partial restriction there.

 

[rider77]

Are you a professional tech?