Hagen Brothers farms,Goodrich ND | If I KNOW that the system has been full of refrigerant so there is little chance of air / moisture having gotten in and the system has not been flushed and needs to have time to evaporate any remaining traces of flush fluid, I will vacuum for as little as 1/2 hour.
If the system has been opened and flushed, 1 hour minimum. As to waiting an hour to see if it leaks ? Depends on how frantic we are to get it fixed and back in the field. |
How long do you leave the vacuum pump on the a.c. unit?
