retender upkeepment of entire electrical and allied installation with provision of materials and manpower at west bengal state university with allied area of the university premises in the district of north 24 parganas annual maintenance contract of a.c machines. for the period of one year- 1 annual comprehensive maintenance & servicing of 1.5 ton window type ac machines. 2 annual comprehensive maintenance & servicing of 1.0 ton split type ac machines. 3 annual comprehensive maintenance & servicing of 1.5 ton split type ac machines. 4 annual comprehensive maintenance & servicing of 2.0 ton split type ac machines. 5 annual comprehensive maintenance & servicing of 4.0 ton tower type ac machines. 6 annual comprehensive maintenance & servicing of 5.0 ton concealed (hat)/ductable type ac machines. 7 annual comprehensive maintenance & servicing of 5.5 ton concealed (hat)/ductable type ac machines. 8 annual comprehensive maintenance & servicing of 6.0 ton ductable type ac machines. 9 annual comprehensive maintenance & servicing of 7.5 ton concealed (hat)/ductable type ac machines. 10 annual comprehensive maintenance & servicing of 8.5 ton concealed (hat)/ductable type ac machines. 11 annual comprehensive maintenance & servicing of 11.0 ton concealed (hat)/ductable type ac machines. 12 annual comprehensive maintenance & servicing of 12.0 ton ductable type ac machines. 13 annual comprehensive maintenance & servicing of 17.0 ton concealed (hat)/ductable type ac machines. 14 annual comprehensive maintenance & servicing of 18.0 ton ductable type ac machines.