When electrical equipment is subject to a clean and dry environment, cleaning is required more frequently than if the environment is humid with a significant amount of dust and other foreign matter. Disconnect the power source before servicing or repairing electrical equipment. Refer to the corresponding checklists. The evolving nature of many industries is calling out for better equipment maintenance practices. maintenance activities and frequencies should be based on the specific operations and conditions of the equipment. 1310. In poor environments, blow out dirt weekly; in normal environments, a quarterly or semi-annual cleaning should be adequate. Do not use any liquid cleaners, including spray cleaners, unless specified by the equipment manufacturer, because of the risk of residues causing damage, interfering with electrical or mechanical functions, or compromising the integrity of insulation surfaces. In practice, a preventive maintenance program can be quite complex: there's a great deal of data to be collected and analyzed, and many competing tasks to schedule, prioritize and cost. Cleaning, exercising, lubricating, relay testing and breaker testing are conducted during a de-energized state. Practice Test Question: Which relay is used to protect feeders? As equipment starts to display signs of electrical aging, it should act as a trigger for the employer or owner to carry out preventive maintenance to avoid catastrophic failure. The only way to be sure. Use care when working with compressed air to avoid contaminants from become airborne, which can contaminate insulation surfaces, cause injury to personnel, or affect the mechanical operation of nearby equipment. Consider an EPM program â before a costly failure occurs. Recommended Practice for Electrical Equipment Maintenance NFPA 70B details preventive maintenance for electrical, electronic, and communication systems and equipment -- such as those used in industrial plants, institutional and commercial buildings, and large multi-family residential complexes -- to prevent equipment failures and worker injuries. licensed mechanic). Allow sufficient time for drying after cleaning equipment with a liquid solvent or water! NFPA members and public sector officials may submit a question on an NFPA code or standard. Often the equipment cannot be repaired and must be completely replaced. Blowing equipment out with compressed air is likely to spread contamination and damage insulation. Personnel should be properly qualified before cleaning electrical equipment. The basic guidelines regarding safe handling of electricity documented below will help you while working with electricity. Heaters a. On many fridges, you get to the coils by removing the front grille. Make sure that dust or contamination is kept off high-voltage equipment. General Habits. In fact, one of the most important steps in good electrical maintenance is having a professional inspect your system at least once a year. Never use any appliance that is defective. 5 An electrician can check your electric panel, replace damaged wires and test circuit breakers. checklist includes common cooking equipment and dining furniture. Typical current range for locked rotor current, Gen Breakers Failed to close just "Click", Most common cause of failure of electrical equipment in service. If a particular piece of equipment needs lubrication, it may work at a slower rate and reduce the efficiency of an entire line. When working with electrical items, make sure to unplug the unit or turn off the power to the specific circuit. Some rules aren't defined by the type of tool your employee is using and can be applied to anything they need on shift: Clean and store the equipment correctly after every use. A rag barely moistened (not wet) with a nonflammable solvent can be used for wiping. Neglecting the maintenance of electrical equipment over a long period of time will inevitably lead to costly emergency repairs and equipment failures in addition to elevated safety and property risks. Removed the apparatus to a suitable location for cleaning, or other exposed equipment should be covered before cleaning starts to keep the debris out. Sharpen your skills with our collection of quizzes on electrical safety, maintenance & testing of electrical equipment and industry standards. Check if there are frayed wires, ï loose plugs ad connections. Maintenance of Electrical Equipment In Buildings (photo credit: Critical Power Testing and Maintenance, LLC. 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