Pete 379 air conditioning

Oh ok haha just wanted to make sure

 

High side looks good. It’s possible about your gauges but you don’t need to spend good money on gauges. Go out to your car or your pickup truck and hook up the gauges. Depending on your ambient temp, low side will be between 25 and 35 psi. Put the gauges on anything but your truck just to see if that gauge is messed up on low side

 

Fan runs off high side switch. Your cut off is 300 psi on the high side. Soon as 300 psi hits, fan comes on to cool the condenser back down to the low 100 range. Low side psi doesn’t change when the compressor is engaged. Watch my video again on page 1.

 

So your gauge manifold is messed up huh

 

No shop with no machine ever sucked oil out of your A/C or anyone else's A/C, the oil residue that is left in a system after evacuation is removed by flushing the system.

The purpose of a vacuum pump is get the moisture to boil so it will become a gas and be sucked out of the system.

ANY PUMP that will create enough vacuum to peg the gauge needles is making enough vacuum to boil the moisture, an A/C machine is great for saving and filtering the old freon but it is no more effective at boiling water than any other vacuum source. In fact when I was starting out in A/C I used the vacuum line to the power brake booster on cars as a vacuum pump, I just let the car idle for 45 minutes to keep the gauges pegged.

A/C is not some mysterious science, you can find countless credible sources that will verify that the lubrication oil circulates with the freon and vacuum pumps don't remove oil or any other contaminates besides water.