dismantling, re-installation, repairing (outside camc) of split type room air-conditioner installed at various places of kolkata police hq and 306 b.b ganguly street under purview of lbes, pwd.- dismantling of 1.0/1.5/2.0 tr split type room air-conditioner fromtheir original position and keeping them in safe custody. 2 installation, testing & commissioningof the2.0 ton capacity split air conditioners indoor and outdoor unit after cutting hole in wall as required by santras & mending good damages and finishing by sand ,cement,14 size stone chips as per direction of eic. 3 thorough servicing, overhauling of existing ac machines. 4 supply & refilling of r-410a/r-32 refrigerant gas for ac machines 5 s & drawing refrigerant copper pipe line of following sizes for inter- connection of indoor & outdoor unit along with nitrile rubber insulation foam asbestos and roll tape wrapping and saddling 6 1/4 7 1/2 8 5/8 9 s/f 3/4” pvc drain pipe with saddles for fixing the pipe on wall. 10 s/ f 3 core 2.5 sqmm copper control cable for interconnection of indoor and outdoor unit. 11 supply & fixing of inverter pcb board for 1.5/2.0 tr split inverter ac machine in-lieu of defective one. 12 repairing of defective inverter pcb board for 1.5/2.0 tr split ac machine. 13 supply & fixing of hermetically sealedrotary compressor for 1.5 tr split type ac machine. (make: toshiba/hitachi/tecumesh) 14 s/f powder coated ms iron structure for installation of outdoor units 15 fabrication of suitable bracket by 3 nos angle (50x50x6mmx3mtr) for installation of 1 no. outdoor unit & 16 mtr of 25 x6 mm iron flat and 25x25x5mm of 10 mtr for platform & groundwall & fixed it in concrete wall by cutting hole & necessary scaffolding as per direction of eic & painting the fabrication workby 1 coat of ro primer & 2 coat of oil paint.