OK new tech here but i tried... Work at a place with random used equipment to mess/learn with.. Had a burned out compressor on a condensing unit.. Found a similar HP condensing unit with barely legible label.. the RLA numbers seemed similar so I went for it... flushed out lines/system nitro purged, deep vac and charged with virgin liquid 409a (type that was already in there)
Now this is my first/experimental unit, the box has 2 units to cool, I fixed(?) the burnt out one because the other one is on it's way out.. now mine is doing the job that both were doing by itself, a feat deemed impossible from the last refrig. tech. So the unit is cooling great evap temps can dip down to about 15-20.. box temps about 32-40 got a bulb in the evap coil for brick protection.
With ambients of 82 i have condensing temp of 120! I am suspect of the condenser here is why..
Steel vs. Aluminum fins
less fins per inch
about 2 inches smaller width wise
old coil 3 tubes deep, new one 2
RLA rated at 7 pulling about 8
I can spray water on it condensing temp drops right down..
I think if the compressor has the capacity, i either need a larger (more efficient rather) coil OR a condenser fan setup pushing more CFM??!!
Is this noob right??? Any suggestions??
SC and SH both about 10 degrees.. head 200psi (minimum!)