MID/AN/102

Repairs to 120 HP 3 phase induction motor at LIS Seripalai .The job involves dismantling the motor by unfastening the foundation nuts and bolts and also decoupling from the pump and disconnecting the electrical connections from the main supply.shifting of motor to safer place by using manual labour at LIS. Complete dismantling of the motor involves extraction of rotor from stator followed by cleaning of stator and rotor using compressed air, organic solvent, CCL4 etc. to remove the dust particles /silt etc. Extraction of burnt winding from the stator, Shifting the burnt winding to workshop by head load and mechanical transport. Providing and making of coils from new wire of suitable gauge and size and shifting back to LIS .The job also invoves shifting of necessary tools/tackles and material from workshop to LIS for rewinding of motor at Site. Cleaning of stator with petrol .P/F of new winding wire of suitable gauge & size in the stator, varnishing the stator winding with superior quality of varnish. Drying the stator winding with hot air circulation process.. Assembling of the motor . Shifting the motor back to LIS . Refitting the motor at its installed position and coupling with pump, making of electrical connections, alignment with pump , testing of motor on full load. Complete job includes the cost of material, labour charges, hiring charges of tools & tackles, transportation charges. Complete Job

Repair to 3.5 cusec discharge 32m Head H.C pump no. 1 installed at LIS Seripalai. 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 workshop by using manual labour and mechanical transport. Complete dismantling of impeller assembly. Providing/ fitting of DE and NDE bearings(6310- 2nos.) & bushes (1nos) in lieu of worn out ones. 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 new nuts and bolts and studs coupling with motor. P/F of gland packing etc.and testing on load .. The Job includes cost of material, labour(skilled and unskilled) loading charges hire charge of tool and tackles To and transportation charges. Complete job

M/S HITAISHI ELECTRICALS AND MECHANICAL WORKS

ROYAL ENGINEERING ENTERPRISES