SPECIAL REPAIRS TO MOTORISED ROLLING SHUTTER PHASE II IN TECHNICAL AREA AT CVRDE AVADI

Amount

Disconnecting, dismantling and taking out the existing low / high level rolling shutters with or without gear and motor, folding patties with bottom runner, hood, guide channel etc and making good the existing surface for replacing with new motorised rolling shutters all as specified and directed by Engineer-in-Charge.

S&F motorised (floor mounted) Steel rolling shutters of 1.25mm thick MS sheet lath with bevel gear box, Shaft and crank handle, with ball bearing at 0.7meter centre to centre as specified including hood cover 1mm thick, spring, gauge wheel, guide channel of 3.15mm thick, bracket plate, end clips, locking arrangement, MS roller shaft min 50 mm dia bore of suitable length etc.and one shop coat of primer erected in position as indicated complete all as specified and directed by Engineer-in-Charge. Note: i) The contractor shall provide two crank handle for one rolling shutter. ii) The bevel gear box shall have provision to connected with speed reduction gearbox(worm gear box) and motor. iii) Induction motor with speed reduction gearbox and starter will be measured and paid separately under relevent items.

Design, Supply, install, testing and commissioning of Induction motor not less than 2HP, 3 phase, 50Hz, 415 volts AC, connected by means of MS coupler to suitable speed reduction gear box (worm gear box) and further connected to bevel gear box by MS coupler of suitable length including suitable forward and reverse motor starter and limit switch. The AC induction motor and worm gear box shall be fixed on Suitable MS section frame work either floor mounted or wall mounted as per site condition complete all as specified and directed by Engineer-in-Charge. Note: i) The electric drive / worm gear box shall be so designed / adjusted as to limit the speed of movement of the rolling shutter in either direction to not more than about 10cm/sec. ii) The design of AC induction motor-2HP and worm gear box shall be designed to for lifting capacity not less than 1500 Kgs upto a height of 09 meters. ii) The quoted rated includes for AC induction motor-2HP, speed reduction gear box (worm gear box), MS coupler (02 Nos), motor starter, limit switch and necessary masonary work for placing motor and gear box as per site condition alongwith MS frame work.

M&L preparation of new surface and applying two coats of synthetic enamel paint on surface of any description over 10cm in width or grith for rolling shutter all as specified and directed by Engineer-in-Charge.

M&L for submain wiring complete with 5 run of 4 Sqmm for sphase (RYB), neutral and earth wire FRLS PVC insulated and unsheathed cable with multistranded copper conductor in and including 25mm dia steel enamelled conduit medium grade, fixed on surfaces of wall/ceiling (surface wiring) including taking down the old U/s submain wiring all as specified and as directed by Engineer-in-Charge. Note: 5 run of 4 Runs of FRLS PVC copper cable and 1 Run of steel enamelled conduit will be measured as one run.

Supply and fix sheet metal enclosure with socket plug top, triple pole and Each earth enclosure with three pin and earth plug complete with one triple pole 20 Amps MCB all complete all as specified and directed by Engineer-in-Charge.

rc enterprises

R K ARUMUGAM

RAVI ENTERPRISE

M/S SAI SRI HARSHA ENTERPRISES