Preventative Maintenance and Diagnostic Services


H&N Electric is not only a leader in electric motor repair and generator repair, but our team of engineers, sales experts, machinists, and Onsite Technical Service (OTS) experts can work with you to maintain your equipment and diagnose the root cause of your equipment failure. Predictive maintenance can help you avoid catastrophic failures and reduce unexpected downtime by identifying machines near failure or by monitoring your equipment’s changes over time. Couple that with a comprehensive preventative maintenance program established by our team of experts, and we can give you peace of mind by extending the lifecycle of your critical equipment.

Vibration Trending & Analysis

Vibration analysis and trending is a method of evaluating current machine condition and monitoring a machine’s changes over a period of time. It can also be used to pinpoint a source of several problems such as misalignment, imbalance and bearing issues in electric motors, generators, and gearboxes installations. Vibration trending and analysis can be performed on all rotating equipment.

Benefits of Vibration Trending and Analysis

  • Diagnose imbalance and misalignment
  • Discover bearing issues
  • Applicable on any rotating equipment
  • Improve equipment reliability and uptime
  • Prevent catastrophic failure
  • Improve machine safety levels

Applications for Vibration Trending and Analysis

  • Small to large electric motors and generators
  • Pumps
  • Air handlers
  • Fans
  • Gearboxes
  • Other driven machines

Online Motor Testing

This in-service motor analyzer takes the next step in providing complete predictive and preventive maintenance programs. It provides root cause analysis through the separation of mechanical and electrical issues.

Benefits of Online Motor Testing

  • Reduced downtime by preventing and predicting future problems
  • Root cause analysis
  • Monitor motor condition while running
  • Understand VFD effects on motors
  • Accurate assessment of operating load over time
  • Real-time results allows technicians to make adjustments and recommendations quickly

Applications & Tests Available

  • Motor performance tests
  • Motor condition tests
  • Energy assessment
  • Advanced data collection and organization
  • Power condition tests

Infrared Thermography

Infrared thermography can provide significant warnings of potential problems with critical equipment before catastrophic failure. Using this technique, you can identify overheating in electrical connections and other machine components in your electric motors, generators and control systems. And once a problem is identified, you can schedule repairs to be made during a planned outage to avoid a potentially massive production shutdown.

Benefits of Infrared Thermography

  • Reduce unscheduled downtime
  • Detect problems quickly
  • Assess priorities for corrective action
  • Reduce catastrophic failure of equipment
  • Prevent production losses

Applications for Infrared Thermography

  • Power distribution and control cabinets
  • Building envelopes & structures
  • Electric motor conduit box & frame temperature
  • Mechanical bearing inspections
  • Electrical systems
  • Process problems due to heat loss

Dynamic Balancing & Laser Alignment

Nearly anything that rotates, or is supported in bearings that allow it to rotate, needs balancing to ensure quality performance. And anyone who works with rotating equipment knows that proper alignment and balance are critical to its function. Improper dynamic balance – the most frequent type of balance problem – can cause excessive vibration, which in turn can damage the machine. This is particularly critical when repairing electric motors and repairing generators but is also essential when manufacturing replacement gears for any type of gearbox.

Balance problems can produce a host of problems. These include unwanted noise, unnecessary vibration, premature bearing wear, structural damage, inefficient operations, catastrophic equipment failure, excessive downtime, and high repair expenses. H&N Electric has a complete line of balancing equipment with the capability to balance up to 40,000 lbs. in-house. All precision equipment must be aligned in order to function accurately, and H&N Electric technicians can provide print outs and live visual displays detailing specifications and tolerances for alignment. Laser alignment can be done on any size equipment from 5 HP and up, on horizontal and vertical motors. We also can align pulleys and belts.

Benefits of Dynamic Balancing & Laser Alignment

  • Increased operating time
  • Increased productivity
  • Decreased downtime
  • Applicable for vertical and horizontal motors
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