Maintenance procedures for explosion-proof pressure switches

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Maintenance procedures for explosion-proof pressure switches: Today, the editor will continue to provide you with more information on explosion-proof pressure switches. In previous days, we covered topics such as an overview of these switches, their working principles, and so on. Today, we will explain the maintenance process for explosion-proof pressure switches. This is also similar to the maintenance of pressure switches, with some slight differences; let me start explaining it. Maintenance of explosion-proof pressure switches: 1. Open the end cover of the wiring compartment, and check whether all the terminal screws are present, whether the bolts are distorted, and whether there are any cracks in the terminal bases. Set the 2 isolation levers to the zero position to open the main chamber. 3 Check whether all components are intact and present; inspect whether the coils of transformers, contactors, or relays, as well as voltage (current) transformers, are damaged, whether there are cracks in the enclosure of isolating switches, whether there are signs of damage to the contacts caused by arcs, and whether all wires are present. 4. Power on to further inspect the electrical functions of the switch. 5 During power-on inspection, all components operate sensitively, and the test operations are sensitive and reliable, in compliance with the manufacturer’s specifications. 6 Check the synchronization of the vacuum contactor. 7 Check whether the coil temperatures of the transformer and various contactors or relays are normal. 8 Check whether the display of the switch is normal. 9 Check the grounding screw of the switch to ensure it meets the switch maintenance standards. 10 Use a multimeter to measure the voltage on the load side. Connect the 11-switch to the motor and conduct a load test; the test duration must be no less than 2 hours. 12. Provide the iron plugs, iron rings, and rubber rings required for connecting the switches to the speakers. 13 If the flameproof surface does not meet the explosion-proof requirements, it must be polished with sandpaper and then phosphated. 14 Remove the coal ash from the switch housing, wipe the housing clean with rags, and paint the housing. 15 Has been repaired and stored.