KMC/S_D/KGPS-43/24-25

Amount

Disconnecting the main supply & dismantling the cable connection from the Aerator motor terminal .

Dismantling of the whole Aerator unit part by part i.e motor , gear box , mounting plate , mounting stud , impellar , shaft etc. with necessary tools and tackles and to be kept at safe place.

The motor shall be dismantled carefully and rotor to be seperated & removed from the stator. Properly cleaning of dust and dirt by air compressed and brush from windings of the stator and subsequent heating and cleaning of the stator . Other components should be thoroughly cleaned and checked.

Complete overhauling and heat varnishing of the stator with class - f grade insulation to obtain stable IR value , PI value etc. after properly baking .

Cleaning of the outer surface of rotor by using soft skimming and subsequent heating & cleaning of the rotor as directed . Trueness of the rotor shaft to be checked and rotor to be dynamically balanced.

The stator winding terminals shall be connected through terminal box by using suitable Brass socket with crimping. New bolts & nuts has to be provided for tightening the connection terminals.

Opening & replacement of existing bearings of the motor in the DE & NDE side as per sample.

Metalising/re-sleeving of bearing housing cover on both side (DE & NDE) & machining the same & match with bearing housing its normal condition.

Rebrazing the both end of rotor joint with end rings .

The motor shall be assembled thoroughly as per the original by using new fasteners and shall apply the grease wherever applicable.

All necessary testing of the motor shall have to be done as per relavant IS before commissioning of the motor.

Repairing , balancing & necessary testing of the Aerator impellar.

Repairing of the central shaft & fitting fixing with proper alignment.

Repairing , servicing , overhauling of the gear box unit after opening part by part as per direction of EIC & fitting fixing the same along with supply of 2 litres of lubricating oil (ISO VG-320).

Necessary repairing work of the aerator platform , handrail , bridge support etc. as per direction of EIC.

Supply & fiixng of mounting studs , nuts , bolts , spring washers , screws , gaskets etc. as per sample .

Necessary repairing of the 2 no. cuboid floats & proper buoyancy to be checked before commissioning of the unit .

Re assemble the whole aerator unit part by part .

Priming & painting of the whole Aerator unit ( motor , impellar , gear box , platform etc.) with 2 coats epoxy paint as per direction of EIC.

Transportation of all the parts of Aerator units from the plant to party's workshop & back to plant including unloading at site .

Commissioning of the Aerator unit on its original position , reconnection of the cable & trail run of the Aerator upto satisfaction of EIC.

MAITY AND CO (BID ID -6090368)

S B and Co (BID ID -6092291)