Which item is associated with checking for plumb, level, and square after placement?

• A. Support Arms
• B. Hoistway Travel Check
• C. Weight of Units
• D. Mast Installation

Answer: (A)

Plumb, level, and square checks after placement are all about getting the unit positioned true in the frame so everything tracks and lines up correctly. The component that directly establishes and maintains that positioning is the support arms. They hold the unit in the correct plane within the system and are adjusted to bring the assembly into true vertical and horizontal alignment relative to the hoistway and rails. If these are not plumb and level, the entire escalator can shift out of alignment, causing uneven wear, binding, or unsafe operation.

Hoistway travel checks focus on how far and how smoothly the unit moves within the hoistway, not the initial geometric alignment. Weight of units relates to load and balance, not the placement geometry. Mast installation is about erecting the vertical supports and ensuring they are plumb, which is part of alignment but not the specific post-placement check described here; the step most associated with verifying the placement geometry is the one involving the support arms.