![]() ![]() The load chart for that unit takes into consideration all the options installed on the boom when the digger derrick was built. While load charts are affixed to the device in view of the operator near the controls, it is critical to always verify that the serial number on the load chart matches the serial number of the unit. The nature of the industry is that digger derrick capacities are directly affected by the chassis the digger derrick is mounted on, where it is mounted, the options and accessories the digger derrick is equipped with. That means that just because you have more than one Terex Commander 4042 in your fleet, the same load chart may not be used for both units. An important part of the overall written exam score relates to load charts.ĭigger derricks load charts are designed specifically for the unit serial number of the unit. Applying this knowledge will help with safe operation of the equipment and taking the written test to become a CCO-certified digger derrick operator. In many ways, digger derricks are similar to cranes with telescoping and rotating booms, jibs and other attachments, and winches with load lines that can be configured with multiple parts of line. Just like when operating cranes, understanding how to read load charts, and applying that information to the operation of a digger derrick is critical.
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