146/MID/AN

Repair to 75 HP three phase induction motor at LIS Trooti .The job involves decoupling the motor from the HC pump and unfastening the foundation nuts and bolts by using suitable tools and tackles and labour. Lifting the motor out of pump house by using manual labour. Loading the motor in the vehicle and shifting the motor to the workshop . Unloading of the motor in the workshop .The job further involves dismantling of end covers, extraction of rotor from motor. Extraction of damaged winding from the stator. Cleaning of stator with compressed air and requisite chemical cleanser/CCL4. Complete rewinding by way of providing and fitting of new good quality winding wire of gauge and size (as per old sample) in the stator together with replacement of damaged /worn out wedges/strips and p/f of f-class insulation, Application of superior quality varnish (Red Becktol etc.) by spray impregnation process and drying the stator winding with hot air circulation process and thereafter checking the IR value. Re-assembling the motor after greasing. Shifting the motor to LIS . Fitting of the motor over the base frame by providing / fitting of nut bolts, washers etc., making of electrical connections, replacing worn out nuts, bolts for the electrical connection. Alignment & coupling with pump .Complete testing of the pumping unit. Job includes cost of all material, transportation charges, head load and labour charges for skilled / semi skilled labour, hire charges for tools & tackles at the LIS. Complete Job

Repair to 3.5 cusec discharge 26 m head H.C pump no. 01 at LIS Trooti.The job involves de-coupling of pump from the motor and removing the top cover, extraction of shaft and impeller assembly together with bearing bracket and shifting to the workshop by using manual labour and mechanical transport.. P/F of 2-No bushes as per sample. P/F of new set of bearings (3308 and 3309) . Repairs to pump shaft by applying new material so the pump shaft should be balanced. Turning and machining of the shaft for proper finish and size. Fabrication of glands ( 2 nos.) and studs with nut. Fabrication of neck rings( 2 nos.) as per sample . Re-assembling of impeller shaft assembly and shifting back to site and there after lowering at proper position, placement of oil seal and closing the top cover along with P/F of new nuts, bolts and studs coupling with motor. P/F of gland packing etc.and testing on no load. The Job includes cost of material, labour(skilled and unskilled), loading charges, hire charge of tool and tackles, to and fro carriage charges.

G S ENGINEERING WORKS

TRIKUTA ELECTRICAL AND MECHANICAL WORKS