Refrigeration and Air Conditioning at 1FBSU, AF, Amritsar. PB. dg. 2019- 20. Code Head:- 51/ 761/ 06 SH:- 1. Repairing/ Servicing of Window/ Split Type A. C. Units. 2. Servicing and Descaling of 3x30 Ton A. C Plant Pumps at Signal Section and Missile Shed. 3. Servicing/ Repairing of Desert Coolers.