The installation of the air supply and exhaust system and the air conditioning system shall be carried out under the conditions that the construction of the building maintenance structure is completed.

The RAT is the auxiliary pressure source for the blue hydraulic system and emergency electric constant speed motor/generator (CSM/G). RATs are deployed automatically or manually based on failure conditions. It pressurizes the blue hydraulic system to 2500 psi. According to specific maintenance procedures, it can only be retracted on the ground.

Air Conditioning System Related Malfunctions1. Sensor, relay failure(1) During the entire control process of the air-conditioning system, the controller processes and issues control signals by receiving the signals from each temperature sensor.