Where is the use of cast iron permitted on a power type manlift?

The use of cast iron is permitted on guide shoes in a power type manlift due to its durability and wear resistance properties. Guide shoes play a crucial role in ensuring the stability and proper functioning of the manlift as they are designed to provide support and reduce friction between the lift and its guide rails. Cast iron, being a strong material, can withstand the forces and wear that occur in these areas, making it suitable for this application.

In contrast, materials used in the control mechanism, motor housing, or on the landing platform have different requirements that prioritize lightweight construction or electrical insulation, which cast iron does not provide effectively. Therefore, guide shoes are the designated component where cast iron can be utilized safely and effectively.