Load switch use and maintenance: 1 After unpacking the packing list and randomly check the product technical documentation are complete, check the product for damage during transportation, storage process. 2 Remove dust on the product, and insulators and grounding parts wipe clean. 3 conductive parts and mechanical friction parts load switch, coated with neutral Vaseline. 4 After installation is complete check the wiring is correct, good load switch factory outlets, grounding reliability. 5 in operation should be regular inspection and maintenance load switch, once a year; after breaking 20 times the rated load vacuum load switch, should conduct a comprehensive overhaul. 6 Inspection should not charged in the case, and should check the insulator, the contact exposure and so on. 7 operating personnel must be familiar with all parts of the performance, configuration and installation of the load switch. Low-voltage load switch, also known as switch fuse AC power frequency circuit is adapted to manually infrequently off-load circuit can also be used to line overload and short circuit protection through load switch off Route touch knife complete schematic overload and short circuit protection by a Fuse completed before the 1970s used plastic cover and steel switch knife switch low-voltage load switch belong to the small capacity of the low pressure switch contact load switching speed and handle operation speed of the larger capacity of low-voltage load switch operating mechanism with spring Principle of operation of the switching speed and handle the speed of the storage operation speed regardless of the configuration together with relatively simple and reliable mechanical interlock switch is not closing the lid open and lid can not be opened after the switch is closed to ensure work safety load switch factory direct _ Huayi Electric Power (certified) _ Fuzhou load switch provided by Xian Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) is a leader in Xi'an high-voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Huayi Electric Power leadership with the staff warmly welcome all inquiries negotiations to create Huayi electricity better future.