49/MID/AN

Repair to 150 HP three phase induction motor at LIS Patyari .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. Dismantling the roof of steel shed. Lifting the motor out of the shed by using crane and loading in the vehicle . 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. Providing/fitting of non driving end ( 6314) bearing. Re-assembling the motor after greasing. Shifting the motor to LIS . Lowering of the motor in the shed by using crane. Assembling of the roof of the steel shed by fastening the screws. Installation / leveling 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 & commissioning 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

Repairs to 4.5 cusec discharge 36m head horizontal centrifugal pump of pumping Unit No.2 installed at LIS Nud. The job involves de-coupling of pump from the motor and removing top cover of the HC pump, extracting the internal impeller assembly together with bearing brackets and shifting the same to workshop by using mechanical transport. Complete dismantling of the impeller assembly in the workshop. Repairs to pump shaft at damaged spots by way of remetaling then finishing to proper size . Providing and fitting of 2-No bushes as per sample. Providing and fitting of 2-Nos deep groove ball bearings as per sample .Fabrication of gland bolts 2 nos. as per sample . Re-assembling of impeller shaft assembly & shifting back to L.I.S. The job also includes providing and fitting of gland packing, grease and gasket etc. that may be required during the reassembly of the pump. Fitment of impeller shaft assembly in the pump at proper position & closing the top cover by providing and fitting of new nuts, bolts, washers etc.. Thereafter coupling with motor, alignment setting, testing of pump on load. Complete job includes the cost of material, labour charges, to and fro carriage charges, hire charges of tools and tackles, out station charges etc. Complete Job

Repair to 100HP oil immersed star delta starter of pumping Unit No. 2 installed at site of LIS Nud by complete replacement of worn out G.M nuts and washers, copper fingers, contacts,(moving and fixed) as per sample. Replacement of the tripping coil as per the capacity of the starter. Drainage of T.oil. Proper cleaning of tanks by removing the deposited carbon and other deposited material. Heating of T.oil to make it completely moisture free. Providing/filling of T.oil 05 ltrs. Approx. Replacement of worn out/burnt copper thimbles of cables by p/f of new thimbles duly crimped and taped. Connecting power supply & testing on load. Complete job includes the cost of material, labour charges and other misc. charges at site. Complete Job

PERFECT ELECTRICAL WORKS

M/s RK Elect. Mech. Engg and fabrication works