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Vertical Turbine Pumps: Troubleshooting Vertical Motors Mobile App

Please refer to specific manufacturer instructions; these troubleshooting issues provided in the Vertical Turbine Pumps: Troubleshooting Vertical Motors mobile app are intended to be a guideline only. For additional technical assistance, please contact the motor manufacturer’s representative or the nearest authorized motor service facility. While an electric motor is a reliable machine, lack of maintenance and defects in design, manufacturing, or workmanship can sometimes occur. None of the protective devices available will provide maintenance or solve built- in motor defects, so it is worthwhile to know when to suspect the motor. Fortunately, a motor will tend to exhibit some signs of distress prior to a complete and catastrophic failure, and while it does take experience to recognize many of these symptoms, the following summary of possible motor problems can help prevent failure.

  • Lendlease
  • The Cooperative
  • PG&E
  • Red Bull
  • Mirvac

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Take a peek inside the Vertical Turbine Pumps: Troubleshooting Vertical Motors Mobile App

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    Please refer to specific manufacturer instructions; these troubleshooting issues are provided as ...

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    While an electric motor is a reliable machine, lack of maintenance and defects in design, manufac...

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    None of the protective devices available will provide maintenance or solve built- in motor defect...

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    Excessive motor or pump imbalance

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    Misalignment or eccentricity of rotating parts

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    Open bars in motor rotor

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    Mounting unstable or uneven

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    Faulty bearings (improperly seated, pitted from long periods of idleness, fatigued)

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    Uneven motor air gap

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    Operation of spring- loaded spherical roller bearing motors with insufficient thrust load

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    Oil whip

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    Worn bearings

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    Loose iron

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    Fan noise

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    Vibration

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    Bearing noise: Bearing noise is a normal phenomenon, but experience will tell when noise exceeds ...

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    The most common complaint is failure of cap screws that hold the couplings.

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    Replacement cap screws should be SAE Grade 5 or the equivalent.

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    Unbalanced drive coupling.

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    Over- filling

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    Foaming because of improper oil

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    Leaks at fittings

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    Cracked castings (rare)

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    Plate bearing failures: failure of oil film because of excessive thrust, rusting during storage, ...

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    Sleeve bearing failures: rusting during storage, improper lubricants.

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    Ball and roller bearing failure other than normal wear.

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    Improper, contaminated or deteriorated lubricant

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    Excessive loading

  • ...and More!

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