04/MID/AN

Repairs to 300 mm dia foot valve assembly of pumping unit no.3 installed at LIS Manda-1. 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

Repairs to 10cusec discharge, 18 m head H.C Pump unit no. 01 installed at LIS Manda-I. The job involves removing the pump top cover , extraction of pump shaft assembly & shifting of the pump shaft assembly by manual / mechanical means to workshop. Complete dismantling of the pump assembly. Rebuilding of impeller by using good quality electrodes. Turning/machining of rebuild impeller on lathe machine for proper size . Providing/ fitting of 2no. bearings ( 6210) and 2 no. bushes as per the sample . Assembling of the pump parts. Carriage / transportation of the pump assembly back from workshop to the site of installation at 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 on full load. Job includes cost of all material, transportation charges, head load and labour charges for skilled/semiskilled labour, hire charges for tools & tackles. Complete Job

Repair to 5 HP 3 phase induction motor of priming pump installed at LIS Manda -1 . The job involves disconnecting the power supply and shifting the priming pump to workshop by mechanical transport . Then 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, 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.. Greasing of all the parts. Assembling of the motor coupling with pump . Shifting the motor back to LIS . Refitting the priming pump at its installed position and making of electrical connections testing 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