A/C Guru's Needed! - 411
#11
08-01-2014, 08:27 PM
Record Breaker
Fire fighter,
You can rent a vacuum pump from a rent all tool place most likely, as the cost would be more than most are willing to spend. A 3 cfm +/- would be more than adequate. Keep the system as closed as you conceivably can as the pag oil r134a uses is hygroscopic. It absorbs moisture----I recommend you evac and dehydrate overnight as you most likely don't have a micron guage to measure the "deepness" of the vac.
Once you attach the gauges, to start the evac, DO NOT remove them until the unit is charged. You will also need a large fan to supply cooling air to the condenser, and a helper to bring the rpm's up to around 1000 while your weighing in the charge. If this sounds like too much, most guys that do a/c work for heating and air companies often do auto a/c on the side. You put the system together, and let them finish it.
Good Luck, hope the info helps you figure how to approach this. You don't live close enough for me to be able to give you a hand.
You can rent a vacuum pump from a rent all tool place most likely, as the cost would be more than most are willing to spend. A 3 cfm +/- would be more than adequate. Keep the system as closed as you conceivably can as the pag oil r134a uses is hygroscopic. It absorbs moisture----I recommend you evac and dehydrate overnight as you most likely don't have a micron guage to measure the "deepness" of the vac.
Once you attach the gauges, to start the evac, DO NOT remove them until the unit is charged. You will also need a large fan to supply cooling air to the condenser, and a helper to bring the rpm's up to around 1000 while your weighing in the charge. If this sounds like too much, most guys that do a/c work for heating and air companies often do auto a/c on the side. You put the system together, and let them finish it.
Good Luck, hope the info helps you figure how to approach this. You don't live close enough for me to be able to give you a hand.