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Is Your DC Elevator Motor Reaching End of Life?

Learn if repair, maintenance, or modernization is the best solution for improving reliability, performance, and long-term value.


How to Assess the Health of Your DC Elevator Motor
 
         1.  Identify the DC motor and control system 
         2.  Condition assessment and inspection
         3.  Electrical and mechanical testing
         4.  Clean critical components
         5.  Repair or replace as necessary
         6.  Dynamic testing under operating conditions
 Helpful Resources:
     ENERGY SAVINGS CALCULATOR →
     ELEVATOR MODERNIZATION GUIDE  →
     ELEVATOR DRIVES   →

 Contact Our Elevator Modernization
          Experts to Discuss Your Project

As elevator systems age, building owners are faced with an important question: is the motor still performing reliably? While elevators begin to approach the end of their expected performance lifecycle after 15-20 years, a well-maintained DC elevator machine can continue to deliver excellent ride quality and dependable operation for years to come.

The Key To Making the Right Decision


Understand the true condition of the DC motor

A comprehensive DC elevator motor evaluation can identify signs of wear, assess performance and efficiency, and uncover potential risks before they lead to costly downtime. By evaluating your equipment, you can make an informed decision about repair, maintenance, or elevator modernization.

DC Motor Evaluation Steps

At CMCO, we recommend partnering with a qualified motor analysis and repair company to perform a thorough DC motor assessment. The results provide valuable insight into motor health, helping to maximize equipment life while developing an elevator modernization strategy that aligns with operational and budget goals.

As part of any elevator modernization project, DC motors should be evaluated according to the American National Standards Institute (ANSI) and Electrical Apparatus Service Association (EASA) standards, including ANSI/EASA Standard AR100-2015 “Recommended Practice for the Repair of Rotating Electrical Apparatus”.

The service company should be experienced with DC Elevator Gearless Traction Machines and the use of ANSI/EASA Standard AR100-2015 to provide the following:
  • 1. Identification of the motor and control system

    Identify the DC motor and control system to establish equipment specifications, operating requirements, and maintenance history.

  • 2. Condition assessment and inspection
    • Armature, field coil, interpole, and brake coil insulation condition
    • Commutator condition and commutation
    • Brush and brush rigging condition
    • Bearing and lubrication condition
    • Brake condition (pad, drum/disk, bushings and pins, linkage)
    • Fitment and mechanical integrity (shaft, lamination, sheave)
    • Air gap
  • 3. Testing
    • Low voltage electrical and insulation resistance
    • Brush rigging insulation resistance
    • Brake coil insulation
    • Armature winding 
    • Field coils
  • 4. Cleaning

    Clean critical motor components to remove dust, debris, oil, and contaminants that can affect reliability and efficiency.

  • 5. Repair as necessary

    Repair or replace damaged components as needed to restore safe operation and prevent unexpected failures.

  • 6. Dynamic Testing

    Complete dynamic testing under operating conditions to verify performance, efficiency, and readiness for service after maintenance or repair.

If Your DC Machine Can Be Retained

 


Many DC elevator machines remain mechanically sound and can continue providing reliable service for years when paired with modern drive technology. Retaining the existing machine can reduce modernization costs, minimize installation complexity, and deliver improved ride quality and performance.

 
Recommended Next Steps:

Extend the life of your DC motor with a Quattro® DC drive →

Download the Quattro® DC Installation Guide →

Request a quote for your modernization project →

Extend the Life of Your DC Motor

If Your DC Machine Cannot Be Retained

 


If the evaluation identifies significant mechanical, electrical, or performance concerns, a complete modernization may provide the best long-term value. Replacing aging equipment with modern drive and machine technology can improve reliability, efficiency, maintainability, and future serviceability.

 
Recommended Next Steps:

Compare AC and DC modernization approaches →

Explore elevator drive solutions →

Review modernization planning resources →

Plan Your Elevator Drive Modernization

Need Help Deciding?

 

 

Our elevator modernization experts can review your evaluation results and recommend the best path forward based on your equipment condition, building requirements, performance goals, and budget.

Request Application Assistance

Why Choose Magnetek for Modernization Projects?

DC Energy Savings.png

With more than 40 years of experience and over 150,000 elevators installed across six continents, Magnetek has the expertise and proven solutions for successful modernization projects. Our Quattro® DC drive is the optimal choice for upgrading existing DC elevator systems, helping building owners achieve energy savings, lower installation costs, superior ride quality, improved performance, and a long service life.

 

Get Started on Your Elevator Modernization Project