Vertical Analysis - Escalator Safety (Step Deflection)

Vertical Analysis LLC

6801 Marlboro Pike

Forestville

Maryland 20747

1(800)447-3344

The Step Deflection test is performed on both sides of the escalator with a load applied to the step. This test accurately measures the vertical position of the step tread relative to the bottom of the comb fingers. Measurements are made to a resolution of 0.1mm (0.004”), at a rate of 60 per second. This data is used to generate detailed step profile graphs.

This test provides an accurate indication of the following:

Cracked Steps
Cracked ‘A’ frames
Worn (or soft) step and axle rollers
Worn (or soft) axle bushings
Insufficient step & comb mesh
Compliance with Local / National codes and OEM spec’s

Safety is enhanced by:

Reducing the potential for combplate entrapments
Reducing the potential for falls resulting from the unnecessary activation

of the step level device


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