KMC/DG(S_D)/BDPS/S-10U/25-26

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NUMBER #

Disconnection of cable connection from the motor panel with the help of special safety arrangement including lifting of submersible pump with the help of lifting method like crane/tripod etc and placed in workable position at site for 240 cusec capacity Grundfos make pump unit no-2.

Construction of scaffolding with bamboo poles, wooden planks, coir rope etc suitable for working at the sump for withdrawal and installation of pump.

Dismantling the motor base plate with upper casing of the pump and adjoining delivery pipe line portion of the pump unit.

Dismantling the pump assembly like diffuser, impeller, bearing housing, bearings, mechanical seal etc of pump unit.

Supply and replacement of mechanical seal as required as per given sample.

Repairing of the bellmouth as per specification and direction of EIC.

Re-metalizing the worn out portion of the shaft & machining of the shaft as required.

Repairing and balancing of impeller as per specification and direction of EIC

Cleaning of different components of the pump unit by kerosene or diesel oil as per direction of EIC.

After cleaning of different parts thorough checking of the different mechanical parts, like diffuser, bearing, bearing housing, impeller, rotor shaft of Grundfos pump unit with the help of special arrangement as per direction of EIC.

Loading unloading & transportation the bell mouth and diffuser both way.

Fitting of impeller with rotor shaft after fitting the repaired bellmouth with diffuser.

Testing with nitrogen for motor sealing, testing for leakage of mechanical seal chamber with compressed air, electrical high pressure testing, measuring of IR value and other relevant test as per desired procedure

Supply & fitting of bolts with self locking nuts and washers having provision with additional check nut & split pin

Pump unit to be re fixed in it’s original position and final commissioning to be carried out at full load after re-fixing of the connecting cable followed by lowering the submersible pump unit from workable bay to the pump chamber with the help of special arrangement

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