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Important Safety Alert: KONE Escalator – Potential Electrical Shock Risk

KONE recently identified a potential electrical shock risk with certain KONE TravelMaster escalators.  KONE is proactively communicating this issue to technicians, the union, AHJs, service providers and others in the industry while it works to resolve the matter.

Click here to view a copy of the KONE Safety Alert.

Excerpt from KONE’s Safety Alert (Click link above for complete information):

KONE Escalator: Potential electrical shock risk 
Work SAFER! – KONE TravelMaster 110 units with Auto-Oiler option have a wire that connects to a single controller terminal that may be “hot/live,” even though the main electrical disconnect is placed in the “OFF” position; service technicians must switch off circuit breaker when servicing units to stop electricity

 Situation:
KONE TravelMaster™ 110 (TM110) escalators manufactured since May 2017 are equipped with an electric Auto-Oiler option. With this option, even though the main electrical disconnect is placed in the “OFF” position, 220 AC live voltage bypasses the electrical disconnect.

This also applies to TM110 escalators manufactured between January 2011 to April 2017, however a 110 AC live voltage bypasses the electrical disconnect when the main electrical disconnect is placed in the “OFF” position.

This design presents a potential electric shock risk to service technicians.

Required corrective actions:
To reduce the risk of shock, technicians must switch off the auto oiler circuit breaker to eliminate the live voltage running through the controller. By March 16, a retrofit kit will be available to help remedy to this potential risk. A notice will be provided to authorities having jurisdiction, the IUEC and other service providers. Moreover, KONE will be reaching out to equipment owners to complete this retrofit as soon as possible.

Contact:
Should you have questions or concerns regarding this issue, please contact Divya Mehta, Senior Counsel for KONE Americas, at divya.mehta@kone.com or 630-955-4405.

 

 

 

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