Can you pump down a 410a system

Outline of steps for pumping down an air conditioning and refrigeration unit: Switch off the air conditioning unit Connect the manifold to the low pressure service valve Using your refrigeration service tools, release the nut on the service valve, to a mid-way position between fully opened and fully closed.

You should see that that the pressure gauge reading will increase on the manifold gauge. Operate the air conditioning unit for 3 to 5 minutes, Isolate the liquid line by closing off the liquid line service valve.

You should start to see the reducing pressure reading on the manifold gauge. Once the pressure reads zero, isolate the vapour line service valve by closing the service valve off, Refrigerant within the low-pressure side of the air conditioning system should be very minimal at this point. So, you can do necessary repair work, or parts replacement work on the unit. Important: You can not perform repairs on the condenser or compressor as they will still contain refrigerant.

If you use a separate refrigerant cylinder, then you can pump down the entire system into your cylinder and then perform maintenance on all air conditioning parts. But this is the quicker method. Evacuate the system after the repair and maintenance work by using a high performance Javac Vacuum Pump to 25 microns or less.

This step is very important otherwise your system will not operate correctly. Search Advanced search…. Today's Posts. New posts. Log in. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. How do you "pump down" an home AC compressor? Aug 5, 1. I need to cut the freon lines to my AC compressor to move it about 16".

I am also pouring concrete to a completely different level then the little 4' X 4' slab it sits on so I will need to move it out of the way. I was told that if it has valves, I can pump it down thereby taking the freon in the copper lines and put it in the compressor. Can I do this or would I be better to just let a pro do it?

It is a 5 ton Trane with the valving very easily accessable. Aug 5, 2. Rat, I would suggest to let a pro do it, It's not rocket science but you need two tools to make ti happen. With these two tools you can pump down your system, This only cover the pump down, to reinstall more tools are required. But if your game and have these two tools, response to this post again and I'll walk you thru It. The compressor pumps all the refrigerant into the condenser coils. The HVAC technician watches his gauges carefully.

What is suction and discharge pressure of ra? What should the high and low side pressures be for a? Manifold sets should be at psi high side and psi low side , with a psi low-side retard. Use hoses with a psi service pressure rating. Leak detectors should be of the HFC type. RA is compatible with POE oils.

What is a good subcooling for a? While superheat indicates how much refrigerant is in the evaporator high superheat indicates not enough, low superheat indicates too much , subcooling gives an indication of how much refrigerant is in the condenser.

Subcooling on systems that use a thermostatic expansion valve TXV should be approximately 10F to 18F. What is a good superheat for a? Since suction line lengths can vary, so too can the superheat measured at the condensing unit.

With short line lengths less than 30 ft. With longer suction line lengths between 30 and 50 ft. How do you charge a a system?

How to Charge a A Condensing Unit Connect the red hose of the manifold gauge to the high side valve on the back of the condenser.