supply of supply, installation, testing and commissioning of deep freezer reciprocating compressor kcn372lag type , supply, installation, testing and commissioning of deep freezer reciprocating compressor k cn372lag type, 230 v, single phase, 50 hz, complete with capacitor, connector, drier, capillary, relay and overload, make: emerson copeland or equivalent. note: 1.removal and installation of the refrigeration unit from the base of coach of vande bharat rake (train no. 20174/73 rewa?rkmp). 2.gas charging work (r-13 4a) in the compressor, including supply connection, checking of refrigerant working pressure and load curre nt. ]