Arrived on site. Checked in with management. Obtain roof access. Replaced all filters. Inspected both RTU units. Checked all electrical. Electrical connections are tight and secure. Checked blower motor belts. Belts are intact and have no tears in them. Checked evaporator and condenser coils in both systems. All coils are clean at this one. Tested operation in cooling mode for both systems. Both systems are functioning properly at this time.