Power Failure Provisions allow what operation via the hand wheel?

• A. Manual raising only.
• B. Manual lowering only.
• C. Both manual raising and lowering.
• D. Automatic movement.

Answer: (C)

The key idea is that when power is out, you still have a manual way to move the escalator or moving walk using a hand wheel. This hand wheel is connected to the drive train so you can rotate it in either direction. Turning it in one direction raises the steps toward the upper landing, while turning it in the opposite direction lowers them toward the lower landing. This manual control is provided so you can reposition the mechanism for rescue, maintenance, or other safe-state tasks without relying on electric power. It’s not an automatic movement—it's a manual operation that can be done in both directions when needed.