NIT No. 03/EE(BM-I)E/2026-27

Supplying, installation, testing and commissioning of EXHAUST BLOWER with Backward curved blower having 20,000 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 22 SwG as per site requirement and hanging materials, supports nuts bolts, painting complete as per site requirement including dismantling of Existing duct with the help of ladder/ scaffolding as required at site.

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

Supplying and drawing of following XLPE aluminium conductor armoured power cable of 1.1KV grade including addling and proper fixing etc as required at site a) 3x25sq. Mm

3x25sq.mm

SITC of aluminium powder coated linear grill of size 1200x300mmwith volume control damper

Dismantling the existing Gypsum false ceiling including disposal of old material from site and Providing & fixing gypsum board false ceiling for covering the existing AC ducts as in where required at all heights with approved texture, design and patterns having moisture content less than 2%, humidity resistance of 99%, with long dry wall wood screws including painting it with2 or more coats of 21approvedenamel paint. The work shall be carried out as per specifications, drawing and as per directions of the Engineer-in- Charge.

Credit for retaining the old & rusted items as per Sr.No.1-6.