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Continuing Education
Traction Sheave Maintenance

Traction Sheave Maintenance

By John W. Koshak | April 1, 2021

How to identify and prevent traction sheave damage due to unequal rope tension

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Using a Vector Network Analyzer to Solve Difficult Elevator Problems

By rc-Admin | February 1, 2021

Device can help uncover incompatibilities in elevator equipment that may be causing chronic motion-controller outages. by David Herres Early 19th-century elevators, which made multistory buildings feasible, predated electrical distribution systems. These lifts were steam-powered and widely used in industrial facilities. They required steam engineers, lift operators and coal stokers, not to mention the need for…

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Inspection of Elevator Ropes, Part One

By rc-Admin | December 1, 2020

Conditions to look for and procedures to check when checking rope replacement criteria and other suspension-connected issues This article is based on a January 2020 presentation by your author at the fourth-annual Alberta Elevator Industry Seminar, which was sponsored by Alberta Elevating Devices and Amusement Rides Safety Association. The title of that presentation was “Inspection…

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Door Reopening Devices — A Field Perspective

By rc-Admin | October 1, 2020

Light curtains and their blind spots are explained in this Focus on Doors and Sensors article. by Lakshmanan Raja The risk that lifts with non-power-operated doors (like swing and manual-sliding doors) will close on a passenger who is boarding and alighting is very slim. However, there is a need for control of such risk with…

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Heat Measurements for Elevator Diagnosis

By rc-Admin | August 1, 2020

The importance of protecting against heat and using thermal imaging instruments in elevator systems by David Herres Elevators are complex assemblies of electrical and mechanical components. These components produce heat, usually due to electrical resistance or mechanical friction. Excess heat is dissipated into the adjacent space if not removed by means of active cooling. Equilibrium…

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3D Hoistway Door Protection

By rc-Admin | June 1, 2020

An examination of new requirements to A17.1/B44 for door protection and how the new mandatory devices work by John W. Koshak Improving the safety of elevators and escalators has been the primary goal of code writers since the 1890s. The first national code was published in 1921, and its first revision, in 1925, included, “The…

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Cybersecurity Best Practices

By rc-Admin | April 1, 2020

A summary of NEII’s guideline for the industry to mitigate and counter increasingly pertinent cyberattacks by Kevin L. Brinkman and Barry Blackaby The National Elevator Industry, Inc. (NEII) released Elevator & Escalator Industry Cybersecurity Best Practices, a guideline for the industry developed by cybersecurity and codes experts from NEII member companies and international industry partners,…

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New Electrical Test Instruments for Elevator Work

By rc-Admin | February 1, 2020

Several products to make the lives of elevator designers, installers and maintainers easier and safer, and how to use them by David Herres In elevator diagnosis and repair, much more than half the work is electrical. This is not to say that the mechanical and structural components are less important, but the flow of electrons…

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Step/Skirt Performance Index Testing and Data Analysis

By rc-Admin | December 1, 2019

How to avoid common problems when measuring this important safety parameter, particularly with the PMT IMD-1 tool Value: 1 contact hour (0.1 CEU) This article is approved for Continuing Education by NAEC for CET® and NAESA International for QEI. EW Continuing Education is currently approved in the following states: AL, AR, FL, GA, IL, IN,…

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Ropes and Traction

By rc-Admin | October 1, 2019

An introduction to hoist ropes This article is excerpted from your author’s book, The Elevator: From Basics to Calculus, which discusses key elements in elevator systems, focusing on the topics of motor drives and control, traffic analysis, and ropes and traction. It is intended to provide quick reference for experienced professionals and basic knowledge of…

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