Vacuumed water out of drain pan. Leveled unit more towards drain port, repaired drain line connection that was loose. Added union for easier clean out. Checked refrigerant charge on unit and added 1 pound of r-410a refrigerant due to unit being slightly low. Set minimum and maximum temperatures on all thermostats at 68 for heat and 74 for cooling. Checked refrigerant charge on all units. Units #2 and #6 where slightly low. Added 1/2 pound of r-410a to each unit