6009-PAWP- 250 HP Motor Reconditioning

City of Columbus
Collector Well 103 Pump Motor #3 - Reconditioning
Specifications
Item 1: Collector Well 103, Pump Motor #3 - Reconditioning
Motor Data:
US Motor - 250 HP (Vertical)
460 Volt, 3Ph, 60 Hz, 1185 RPM, Frame 447TPA, 1.15 Service Factor, NEMA
Efficiency 95.4, Type RUI, Inverter Duty.
ID#: W 11 20150952-0001 R 0003
Top Bearing(s): High Thrust Ball Bearing, #7322 BEN (oil filled).
Bottom Bearing: Standard Thrust Bearing, #6215-J.
Estimated Weight: 2,100 lbs.
Services Requested:
1. Pick up and transport to repair facility.
2. Perform the following electrical tests, both As Received and Upon Completion:
-D.C. high-pot of the windings.
-Polarization Index.
-Balance check all three phases.
-Measure winding resistance.
-Record data and furnish with returned unit.
3. Check all terminations on terminal strip and assure each wire is numbered, if not
renumber all wires as necessary.
4. Check and make sure winding phase orientation stays the same and plant markings
identifying the phase, remain intact.
5. Make sure that numbers are intact on existing terminal strips, repair as needed.
6. Completely disassemble, clean, record mechanical measurements, check bearing
journals, housings, rotor assembly, run-out, and inspect other all parts of motor.
7. Find and repair/replace defective (shorted to ground) motor winding('s). Report
on findings. Motor rewind is to be done, unless after reviewing the findings it is
determined not needed.
8. Steam clean and bake stator, varnish (ceramic coating) windings meeting
specifications for inverter duty motor, per factory specifications.
9. Assure that each motor winding has two functional thermal overload sensors. Check
and preserve all existing RTD's, sensors, and other wiring.
10. Perform dynamic balance of rotating assembly, reassemble motor, provide and install
One thrust bearing filled with Mobil SHC 624 ISO 32 oil and One standard ball bearing
filled with EP-2 grease, per factory specifications.
11. Test and paint motor to match existing color.
12. Provide all documentation and reports.
13. Return motor F.O.B. the Parsons Avenue Water Plant, 5600 Parsons Avenue Lockbourne,
Ohio 43137.
Quantity (1)

City of Columbus
Collector Well 103 Pump Motor #3 - Reconditioning
Specifications