View single post by CBB9M

Posted: Wed Jul 4th, 2018 09:01 pm

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CBB9M
23 year Ranger veteran

Joined: Sun Oct 22nd, 2017

Location: Out Mountainbiking In >, Washington USA

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45psi is illogical on the high side (because that equates to ~50 degrees F and a static system); on an 88 degree day it'll be over 200 PSI on a properly operating system. On a properly operating system, largely, the magnitude of the discharge pressure will be a function of the outside temp and air temp entering the evap, which is usually outside air temp. Higher ambient temp, higher discharge pressure, more heat is being removed from the cabin air.

*Once upon a time I serviced a struggling AC system that presented with seemingly high discharge pressures for the ambient temp. Pulled the radiator and ~1/3 of the area between the condenser and radiator was covered with trapped weeds, ground up leaves and various remains of dead bugs. 10 years of crud causing a flow restriction; if the condenser can't reject heat using all the airflow it's designed to have passing through it, then up goes pressure and on a hot day, performance can be adversely impacted.

Last edited on Wed Jul 4th, 2018 09:04 pm by CBB9M

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-Bill

04 Ranger FX4 Level II, several mods