MID/AN/111

1. Disassemble of H.C Pump and motor by way of decoupling after disconnecting electrical connections .Complete rewinding of 40 HP 3 phase induction motor at LIS Saranoo Old of pumping unit no.2 by way of Disassembling the motor from its installed position after disconnecting the power supply of all three phases And Disassemble the motor by unfastening the foundation nuts and bolts and also decoupling from the pump. Lifting the motor out of the pump house with proper care to prevent any damage. Shifting the motor with the help of manual labour from LIS to road side and through mechanical transport to the workshop. Complete dismantling of the motor, extraction of rotor broken bearing. Repair to rotor shaft by depositing material by welding& turning. P/F of 2Nos bearings (driving end and non driving end) as per sample. Extraction of burnt winding from the stator, 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 and shifting back to L.I.S. Refitting the motor at its installed position and coupling with pump, making of electrical connections, alignment with pump, testing of motor on full load. Job includes the cost of material, hiring charges of tools & tackles, and labour charges for skilled and semi-skilled labour.(Complete Job) 2.Repair/strengthening 0f 3.5 cusec discharge, 18 mtrs head HC pump unit No 2 coupled with 40 HP motor LIS Saranoo old. Old. The job involves disconnecting the electrical connections from the main supply and disassembling the motor by unfastening the foundation nuts and bolts and also decoupling from the pump and then complete disassembling 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. Varnishing the rotor and stator with Dr. Beck compound or equivalent make of varnishing two coats, drying by hot air process. Then heat treatment of stator and rotor in electric oven for attaining moisture free status.. Greasing of the bearings properly. Assembling of the motor. The job also includes cleaning of aluminum and copper cable by using PF solvent to make it moisture and silt free. Providing/fitting of thimbles as per sample which includes crimping. 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, hiring charges of tools &tackles and, labour charges for skilled and semiskilled labour to be employed at site for execution of job including the out-station. (Complete job) 3.Repair/desilting 02 no. of 200mm foot valves at LIS Saranoo old by way of decoupling the foot valve by unfastening the nuts and bolts from suction pipe. Extraction of foot valves from of the river manually. Disassemble of foot valve after cutting/unfastening the nuts and bolts. Cleaning of the foot valve from mud & silt. Shifting the whole equipment assembly to the workshop & Repairs/Strengthening by way of repairing the flap for proper alignment and balance to fit in the seat for no leakage of water. Assembling the foot valve & P/F of new rubber packing sheets, nuts and bolts etc. Checking for leakages. Priming the pump and testing on full load. The job includes cost of material, labour, transportation etc as per the site conditions of LIS Saranoo old. (Complete Job)