MID/AN/159

Repairs to 7 cusec discharge 21 mtr head HC pumping unit no. 1 along with allied works at LIS Aryanpura . The job involves decoupling of pump the motor and removing the top cover, extraction of shaft and impeller assembly together with bearing bracket by using suitable tools & tackles and skilled technicians..Carriage of the impeller shaft assembly by using manual labour, loading in transport vehicle, carriage to the workshop in the mechanical transport for repairs. Dismantling the impeller shaft assembly . Providing and fitting of bushes 2- No. as per sample , . Providing/applying grease to the bearings .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. Providing /fitting of tyre for coupling along with nuts and bolts as per the sample. Coupling the pump with the motor . P/F of gland packing .Priming the pump .Testing the pump on full load . The Job includes cost of material, labour(skilled and unskilled), loading charges, hire charge of tool and tackles, to and fro carriage charges

Repair to 100HP oil immersed star delta starter of pumping Unit No.01 installed at site of LIS Aryanpura . The job involves disconnecting the starter and shifting to workshop by mechanical transport . There after dismantling of starter at workshop and complete replacement of worn out G.M nuts and washers, copper fingers, contacts,(moving and fixed) as per sample. Shifting the starter to LIS . 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

Repairs to 300 mm dia foot valve assembly of pumping unit no.2 installed at LIS Aryanpuira . The job involves disconnecting / dismantling of the foot valve assembly from the suction pipe by deploying manual labour and allied tools & tackles. Shifting / transporting to the workshop. Cleaning by washing with water to make the foot valves completely silt free. After drying them completely, carrying out necessary repair works on the valve surfaces and flanged joints by welding using good quality electrodes. Dismantling of damaged / worn-out foot valve mechanism with flap & rings etc. Complete repair to the damaged flap plate and strainer by way welding. Providing / fitting of new rubber washer cut as per size of the flap plate. Reassembling the foot valve and transporting back to the installation site at LIS. Fitting the valves to the respective suction lines with replacement of damaged rubber gaskets of flanged joints and worn-out nuts, bolts etc. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

Impregnation of 125 HP three phase Induction Motor no. 01 installed at LIS Aryanpura . The job involves disconnecting all electrical connection decoupling the motor from the pump, removing from the base plate . Dismantling the motor ,extraction of the rotor and bearing. cleaning of rotor and stator winding with petrol and chemical cleanser. Cleaning of dust/carbon etc from the stator with the help of compressed air/ CCL4/organic solvent . Thereafter applying Dr. Beck. Compound on stator winding by spraying impregnation process and drying the same with hot air circulation process. Checking IR value of the winding.Providing/fitting of driving end bearing ( 6314) and non driving end bearing ( NU318).Assembling of motor. Fitting the motor over the base frame by providing / fitting of nut ,bolts, washers , making of electrical connections, replacing worn out nuts, bolts and thimbles 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

Repairs to 3 cusec discharge 10m head HC pump unit no. 02 installed at LIS Lower manda. The job involves decoupling the pump from motor and further dismantling the pump top cover from its installed position & shifting of the pump shaft assembly by manual / mechanical means to workshop. Separating shaft, impeller and bushes. Rebuilding of shaft at damaged spots by applying new material. Turning and machining of the shaft for proper finish and size. Providing/fabrication of 2 nos. bushes as per sample.p/f of 2 no. new bearing as per sample . Assembling of the pump parts. Carriage / transportation of the pump assembly back from workshop to the site of LIS. Fitment of pump along with replacement of old damaged studs, gaskets, alignment setting at its position, p/f of gland packing, greasing work etc. Aligning & coupling the pump & motor. Complete testing of the pumping unit. Job includes cost of all material, transportation charges, head load and labour charges for skilled/semiskilled labour, hire charges for tools & tackles. Complete Job

Repairs to 250 mm dia foot valve assembly of pumping unit no.1&2 installed at LIS Lower Manda . The job involves disconnecting / dismantling of the foot valve assembly from the suction pipe by deploying manual labour and allied tools & tackles. Shifting / transporting to the workshop. Cleaning by washing with water to make the foot valves completely silt free. After drying them completely, carrying out necessary repair works on the valve surfaces and flanged joints by welding using good quality electrodes. Dismantling of damaged / worn-out foot valve mechanism with flap & rings etc. Complete repair to the damaged flap plate and strainer by way welding. Providing / fitting of new rubber washer cut as per size of the flap plate. Reassembling the foot valve and transporting back to the installation site at LIS. Fitting the valves to the respective suction lines with replacement of damaged rubber gaskets of flanged joints and worn-out nuts, bolts etc. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

Repair to 20 HP motor of pumping unit no. 2 installed at LIS Lower Manda . 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 the motor to the workshop by me hanical transport. Then complete dismantling of the motor involves extraction of rotor from stator .Providing/fitting of driving end and non driving end bearing ( 6309) .Assembling of the motor and shifting the same 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

Chargotra Trading Co.

R K Electrical and Engineering Works