Used by all escalator manufacturers to determine relationship of un...

The combined weight of the platform, sling, cab, and rated capacity.

Guide shoes that use rollers to rotate on the guide rails instead o...

A hydraulic elevator mechanism that regulates the motion of the elevator by...

A method of controlling an AC motor t...

Walls extending from the platform to the handrail or in some cases to...

A watertight enclosure is designed to exclude water applied in the for...

So constructed or protected that the exposure to the weather will no...

Any Change to equipment other than maintenance, repair or replacement

Bolt designed to fasten rail brackets, door sills, headers or other ...