Complete 2 system a/c repair and preventative maintenance check. Found loose wire connection on upstairs condenser dual capacitor compressor connection, from previous maintenance, restore wire and the upstairs system is back to normal operation, basement system was nitrogen pressurized and the client was told by a home warranty to recharge system, which took 3 lbs of R22. The system is cooling at this time, explained to the client there is no warranty on Freon if leaked. Recommended upgrade for main level and basement system.