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pinballlooking · 10-23-13, 03:31 PM

The pressure held overnight. I have been trying to vacuum down the system. New oil in the pump a shut off valve close to the unit. It never got below 500 Microns I checked the vacuum pump with just one hose and the gauge it went 200 Microns no problem. I checked the two hoses and the valve. The valve will not let it get below 400 Microns so I have a bad valve.
I tried the manifold gauge same it would not go below 400 Microns. So I just went from pump to gauge then to outside unit. It was a 300 Microns @4:20 and slowly decreeing 225 Microns @5:10. I guess the plan is to keep it below 200 Microns for a hour then release some 410 from the liquid valve when the pump sound changes disconnect it @the gas valve.

Then let a little more 410 out check for leaks if none release both valves.
I just ordered three 410 ball valves for the next install.

10-23-13, 03:31 PM	#29
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	The pressure held overnight. I have been trying to vacuum down the system. New oil in the pump a shut off valve close to the unit. It never got below 500 Microns I checked the vacuum pump with just one hose and the gauge it went 200 Microns no problem. I checked the two hoses and the valve. The valve will not let it get below 400 Microns so I have a bad valve. I tried the manifold gauge same it would not go below 400 Microns. So I just went from pump to gauge then to outside unit. It was a 300 Microns @4:20 and slowly decreeing 225 Microns @5:10. I guess the plan is to keep it below 200 Microns for a hour then release some 410 from the liquid valve when the pump sound changes disconnect it @the gas valve. Then let a little more 410 out check for leaks if none release both valves. I just ordered three 410 ball valves for the next install. Last edited by pinballlooking; 10-24-13 at 12:35 PM..