[turbo6bar]

I had an identical condensing unit at a rental property. I think the condenser coil is on the back side (the one against the brick wall). In that case, I would expect high side pressures to be through the roof.

There is no perfect pressure reading. It is all dependent on proper airflow across the evaporator and condenser coils. More than likely, this is a system with capillary tube or orifice to regulate freon flow, so you check the charge by calculating superheat. If you haven't done this before, you're better off calling the landlord and having a service man come out. Roughly speaking, assuming you don't have high humidity inside the home, you should expect your supply vent air to be at least 10 degrees cooler than air entering the return vent. The smallest delta I have seen is 12 degrees and the highest was 16 degrees.

I have seen lazy HVAC techs add freon to a system that froze up (they assume it is low on freon), and instead the problem is a dirty evaporator coil. That's why you need someone who can troubleshoot the system properly.