Final answer:
It is generally unsafe and against safety regulations to service equipment while in motion, especially with protective guarding removed, as it poses severe injury risks.
Step-by-step explanation:
Generally, equipment should not be serviced while in motion, especially if protective guarding or fencing has been removed. This is a significant safety hazard, as the absence of guarding can expose workers to moving parts, potentially leading to severe injury or death. Safety protocols, often mandated by occupational health and safety regulations, usually require machinery to be powered down and secured against accidental startup before maintenance or service work is carried out. In some specific cases, machinery that is designed with certain safety interlocks or protections may be serviced under controlled conditions, but this is the exception and not the rule. It is crucial to follow all relevant workplace safety guidelines and regulations to ensure the health and safety of all individuals involved.