What safety measure should be taken before working on an electric motor driven pump?

Before starting any work on an electric motor driven pump, a crucial safety measure involves opening the motor breaker. This action is essential to ensure that the power supply to the motor is disconnected, preventing any accidental activation of the pump while maintenance or inspection work is being conducted. This not only protects the person working on the pump but also safeguards the equipment from potential damage or unwanted operational hazards.

Opening the motor breaker serves as a lockout mechanism, which is a critical aspect of electrical safety protocols. By ensuring that the electrical supply is cut off, the risk of electric shock is minimized, and it allows the worker to perform their tasks with a significantly reduced risk of injury. It is a mandatory practice in various industries that handle maintenance work on electrical equipment to adhere to safety standards and regulations.