Re winding of multiple 3 phase Submersible Motors of different Horse Power and make and repairing of Submersible Pump Bowl Assembly at various Locations under Barasat AI Sub Division under the jurisdiction of Barasat AI Division during FY 25 26

A. SUBMERSIBLE MOTOR: Dismantling of different H.P. 2800/2900/3000 RPM submersible motors removing old burnt out coil from slots carefully, segregating all the parts, washing and cleaning the same thoroughly for verification of serviceable and unserviceable parts as per direction of Engineer –In-Charge.(iii) 17.5 HP / (iii) 17.5 H.P. / 19.25 H.P. / 20 H.P. Submersible motor.

Rewinding of different H.P 3 phase, 410-440 volts, 50 Hz, 2 / 4 poles submersible motor of different make with PVC insulated copper winding wire (1mm to 2mm nom. dia.) as per IS 8783, 1995, part 4 Sec 1 (FINOLEX/ INCABE make to be approved before use) as provided by the motor manufacturer including supplying fitting and fixing fire proof fibre chips on slots for keeping winding wires in position, taped by using water proof tape of 660 volts grade with main cable and fitted with water tight compound by using steel grip tape and vulcanised rubber tape by heating, changing thrust plate, ball retainer and ball including supplying fitting, fixing rings circlips for thrust plate, water seal ring, diaphragm, bush bearing etc. complete as per direction of E.I.C. (c) 17.5 H.P / 19.25 H.P / 20 HP 3 Phase, 410-440 votls, 50 Hz, 2 pole, 26 amps - 30 amps submersible Motor (i) Supply of PVC insulated copper winding wire conforming IS 8783, 1995, part 4/ Sec 1. Length of copper winding wire - max. 450 mts . i-c) 1.7 mm nom. Dia for 20 H.P Note : i-a) 1.5 mm nom. Dia for 17.5 H.P ( Quantity: 4500 Mtr @ Rs. 2708.00 per Mtr.)

Labour charge for rewinding, water proofing, fitting and fixing fire proof fibre chips on slots for keeping winding wires in position, taped by using water proof tape of 660 volts grade with main cable and fitted with tight compound by using steel grip tape and vulcanised rubber tape by heating as per direction of E.I.C. For 17.5 HP / 19.25 HP / 20 H.P Submersible motor

Repairing of damaged motor shaft by metaling with electric welding and turning properly to house in the bearing space and coupling side teeth and also rectifying the dynamic balance of the rotor to its original alignment to avoid any vibration all complete as per direction of the E.I.C.

Supplying, fitting and fixing the winding protector on both sides (Top and Bottom)

Supplying, fitting and fixing the bush bearing for motor in place of damaged as per approval and direction of the Engineer-in-charge. For 20HP & Above Motor a) Top for Motor. (For 17.5 H.P. Motor : 20 nos.@ Rs. 850 Per Each)

Supplying, fitting and fixing the bush bearing for motor in place of damaged as per approval and direction of the Engineer-in-charge. a) Bottom for Motor. (For 17.5 H.P. Motor : 10 nos.@ Rs. 850 Per Each)

Supplying, fitting & fixing drain plug made from brass metal with gasket and washer (one for drain plug one for water filling plug & one for venting plug)

Supplying, fitting & fixing stud bolt with nuts for top and bottom cover.

Supplying, fitting & fixing stud bolt with nuts & washer for upper flange as per sample.

Supplying, fitting & fixing thurst bearing retainer as per sample.

Jointing water proof cable with the leads of the motor including soldering with request water proof insulation and proper jointing compound / valcanised rubber tape so that proper water proof insulation is assured .

Supplying, fitting & fixing S.S.Slip of rotor shaft including removing out of the old one as per direction of the E.I.C.

Supplying, fitting & fixing fero asbestos lining on the thrust plate as per direction of the E.I.C.

Supply fitting and fixing axial thrust plate of motor shaft including supplying of key etc. all complete as per direction of Engineer-in-charge. i) 12.5 H.P to 20 HP. and above

Supplying, fitting & fixing Pivot segment steel balls on the thrust bearing housing as per direction of the E.I.C. (6 Nos. in one set with rubber guarder/circlip etc). ii). 17.5 H.P to 20 HP.

Supplying fitting fixing of (thrust bearing segment) Pivot Segments (Set of 6) made from from Phosphorus bronze as per sample and as per direction of Engineer-in-charge.b) 17.5 H.P and above.

Supplying fitting & fixing the self aligning thrust plate of the motor shaft including supplying of key etc. all complete as per direction of E.I.C.

Re-assembling the submersible motor after completion of rewinding and repainting and allied work with the repaired spare parts or new spares where necessary (to be supplied departmentally on requisition) including checking all accessories and supplying necessary screws nuts and fitting fixing the whole thing properly as per direction of the E.I.C.

Labour charge for checking up the dynamic balance of the motor shaft for original allignment as per direction of Engineer-in- Charge.

Painting two coats of both inner & outer portion with best quality synthetic enamel paint (to be approved before use) including smoothing surface by sand paper for removing old paint as per direction of E.I.C. a) Motor

B. Submersible Pump Bowl Assembly: Dismantling Submersible pump / Bowl assembly suitable for a capacity of 30 / 150 / 200 Cum per hour capacity against a total head of 15 mtrs to 30 mtrs of different make and segregating all spares fitted with the pump including washing and cleaning the same thoroughly for verification of servicable and unservicable spares as per direction of the Engineer-in-Charge.

Repairing of stage bowl and other spares when necessary by welding, turning and rethreading including supplying and fitting, fixing new studs nuts, washers, impeller key, coupling key with lock nut complete as per direction of Engineer-in-Charge.

Repairing impeller by metallic gas/electric welding with gunmetal stick & turning, fitting, fixing in proper position as per direction of Engineer-in-Charge.

Supplying, fitting and fixing stainless steel shaft as per sample and approval of the Engineer-in-Charge.

Supplying, fitting & fixing G.M.sleeve to be fitted in the bowl bush/body bush suitable for specified R.P.M.

Supplying, fitting & fixing the body (Bowl) Bush (suitable for specified R.P.M of Pump Motor set) as per direction of the Engineer-in-charge.

Supplying, fitting & fixing stainless steel Pump coupling as per sample.

Supplying, fitting & fixing stainless steel sleeves with 2 Nos. S.S. Nut as per size and sample (two nos.).

Supplying, fitting & fixing ceramic filter with circlip & rubber guarder (Original of a particular make of pump)

Supplying, fitting & fixing Impeller seal ring made of Phosphorus Bronze

Supplying, fitting and fixing sand guard made of Gun Metal as per direction of the Engineering-in-Charge.

Painting two coats of both inner and outer portion of submerssible pump with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering after removal of old paint as per direction of Engineer-in-Charge.

Labour charges for re-assembling the submerssible pump after completion of repairing spare etc. and allied works with repaired spares or new spares when necessary to be supplied departmentally which are not provided in schedule including screws, nuts, lubricating materials etc. as required as per direction of Engineer-in-Charge.

Testing of repaired motor by contious 8 hrs running on load as per direction of E.I.C.

Carriage of motor from store to workshop and back to store after repair. This item is only applicable when written permission is available from E.I.C. where there is no facility for such work in the sub- division.

Maximum probable cost for 10(Ten) No. Submersible Pump-Motor set Note : Deduction towards dismantled burnt enamelled copper wire from induction motor or Submersible Pump- Motor set on the basis of actual measurement to be retained by the agency. (Note: In case of PVC insulated copper wire to arrive at net burnt weight 10% deduction will be made) @ Rs.351.00 per Kg.

Add GST@18% on total

Total:-

Labour welfare cess @1%

Gross Amount for Maximum probable cost for 10(Ten) No. Submersible Pump-Motor set including all tax

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