I'm running the Old Air setup in my 54 truck and on the low fan with 50% temp setting you could hang meat in the cab. Your video is informative but I noticed that the compressor clutch was free-wheeling. If the system isn't properly evacuated and fully charged the low-pressure cut-out switch will disengage the compressor clutch. I'd make sure that the tech that charged the system got it evacuated and topped off fully.
Secondly, the 3K cfm fan should keep your engine cool but it may not be cycling enough to draw ample air through the condensor, especially at low speeds. I use the direct drive 6 blade engine-driven fan which keeps air moving constantly through the condensor/radiator and I register 40 degrees at the outlet after 2 years of operation.
You didn't mention how your electric fan is triggered but I would venture a guess that setting (if possible) the fan power-up at a lower engine temperature, would correct the issue. On my setup I added a small pusher fan that can be manually activated to suppliment the engine-driven fan during extended periods at idle.
Summer is here....103.8 F in Lake Wales today!!!!!!!!!!!!!!!!!
Dave
