Air conditioning repair Customer states unit was noisy. Customer did slightly move unit and the noise stopped. Inspected unit and found 90% of the screws holding the body of the condenser together where very loose and backed out. Unit sits in direct sun light & heat. The screws can slowly back themselves out over the years in direct sunlight & heat. Tighten all the screws down and unit is operation normally. Did also check system pressures and system pressures are in manufacture specifications. House is cooling efficiently with a 17 degree temperature drop. Checked condensation line from evaporator coil and notice it was brown and dirty. Recommend pouring bleach or Vinegar down drain system to clean lines 2-4 times a year.