Must have experience in operation, repair and maintenance of centralized air-conditioning and cooling systems. Experience in operation and maintenance of central air-conditioning and cooling systems and shall have the ability to detect defaults and repair them. Check-up and calibrate all Air-conditioning and cooling systems controlling and preventive devices. Shall possess the ability to use measuring and required testing devices for a/c and cooling systems and provide preventive maintenance for the same. Shall have the ability to read and comprehend technical schemes and drawings.