Is it safe to change the speed on a variable speed press while it is running?

Changing the speed on a variable speed press while it is running is not safe due to the risk of unpredictable machine behavior and potential hazards. When adjustments are made during operation, it can cause sudden changes in the machine's operation, leading to loss of control, accidents, or equipment damage.

Safety protocols typically advise that such adjustments should be made when the machine is in a complete stop to ensure that the operator can maintain control and properly assess the machine's operational state. This minimizes the risks associated with unexpected movements or mechanical failure that could result in injury to the operator or damage to the equipment.

Understanding this safety protocol is essential for maintaining a safe workplace and preventing accidents in pipefitting and other industrial environments.