Tech found condenser fan motor locked up, poor connection on contactor, evaporator and condenser coils dirty, no trap on unit, and blower compartment dirty. Compressor was in overload. Tech quoted cleaning coils, blower, installing a trap, and replacing contactor with one that will allow a better connection and replacing fan motor. Compressor and coils tested good both all parts are past expected life expands and may fail at any moment. Tech recommends replacing unit, but if customer chooses to do repair, tech recommends maintenance plan to save money on coil cleaning. Field supervisor present with tech.