NIT No. 78/EE(BM-I)/2025-26

Supplying, installation, testing and commissioning of LLD 6 EXHAUST BLOWER with Backward curved blower having 25,000 CFM capacity of total pressure of 50mmWG to be indirectly driven through an arrangement of belts and pulleys complete with base frames and motor of 15HP,the exhaust fans supplied and installed shall be of ‘Centrifugal Corrosion Resistant' type and shall be capable of delivering the design flow rate against all duct losses. The fans shall be robust in construction and suitable for continuous duty operation. It shall be mounted with ease of maintenance and shall be installed with proper vibration isolators to minimize vibration transmission to duct work and support structure. The impeller balancing shall be in accordance to VD12060,06.3 standard. Power transmission should be from motor to impeller by means of a directly mounting the impeller on motor shaft. Motor Standard lEC three phase motors in accordance with IEC. Mounting B5 and B3 in motor- mounted (1P55) or cabinet-mounted versions. The fan shall be driven by a standard TEFC electric motor with class ‘F’ insulation and class ‘B’ temperature rise suitable for outdoor installation with IP55 protection and suitable for operation with 415V/3Ph/50 Hz electrical supply.

Supply, Fabrication & installation of G.l. duct of 22SwG as per site requirement andhanging materials, supports nuts bolts, painting complete as per site requirement including dismantling of existing duct with the help of ladder/scaffolding as required atsite.

Supplying, installation, commissioning and testing of star-delta starter for 15HP motor in existing panel with suitable over load relay and timer including SITC of ML2 contactor (3nos) including copper wiring of starter complete as per site requirement .

Supplying, fixing acoustic lining on walland ceiling of AHU rooms with 50mmthick, density 32 kg/cu.m resin bonded glass fiber insulation friction fixed in 610mm x 610 mm frame work made of25x50x50x50x25 mm made out of 0.6mmthick GI sheet U shaped channel and covered with reinforced fiber glass tissueand finished with 0.80 mm perforated aluminium sheet etc. complete as requiredand as per specifications.

Credit for retaining the old 2 Nos Exhaust Blowers, 100 sqmtr ducting, starter panels-2 Nos, 200 sqmtr acoustic linning