Upon evaluation by the distributor it was determined the roll pins were not installed during installation of the track light.The roll pins prevent the light from unscrewing from the trolley after installation.The pelton & crane installation instructions clearly states to properly install the roll pins during installation of the track light.The installation instructions also list warnings to ensure the roll pins are installed.The distributor confirmed that the replacement parts were received and properly installed to resolve this issue.The returned parts were evaluated, and it was confirmed that the roll pins were not installed.Set screw dents were visible on both ends of the light column but the roll pins holes were never drilled on either end of the light column.This required safety feature was not installed resulting in the light column unscrewing over time.In conclusion the light column and coupling were not properly installed.Helios light installation manual states "failure to install set screws & roll pin per installation instructions could result in injury or damage to equipment".This concludes the investigation.
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