Sweep Charge information on Refrigerators? Appliance and HVAC Techs only?
foy_d asked:
What is the average life of a new compressor installed using the sweep charge method on refrigerators?
What is the average life of a new compressor installed using the sweep charge method on refrigerators?
List pro’s and con’s to using a sweep charge.
What is required to do a sweep charge properly?
What do trade schools teach students is the proper method?
In what conditions should you never use a sweep charge?
Do you as a technician recommend “sweep charge” over system evacuation?
Which manufacturers use sweep charge for warranty service?
What method would you use on your own refrigerator?
Additonal Comments welcome.
furnace
Sounds illegal to me. I would definitely evacuate.
Gas Furnace Repair Chester
I have retired and haven’t done sweep charges for seven years. That was all we used where I worked on HVAC. Basically you remove the old compressor. If a burn out, flush the tubing. Put in the new compressor and dryer. Add a partial charge, start compressor, run for 5 min. discharge high side with compressor running, close valve, turn off compressor, dump in full charge, close valves. Your done. You need your hoses and valves set up so you don’t take any hoses off until your finished sweeping and recharging.
the Idea is that you can push out more moisture and contaminates then you can suck out. It is approve for all system work.
Used for years, no problems & you don’t need a vacum pump.
Gas Furnace Maintenance
In the old days we would do a sweep charge along with evacuation but not anymore due to the refrigerant venting laws. Just use a good vacuum pump (clean oil) and a vacuum indicator gage to tell you when you have removed enough moisture(upper limit is 500 microns for Refrigeration and 1000 for AC). If you can,t reach these limits you may have a leak. Be shure and hook up to both the low and high sides of the system.