What should be done if the purifier frequently trips or shuts down under protection?

Common causes include short circuits, current leakage, damp cells, heavy grease, power-module faults or abnormal grounding; switch off and inspect rather than forcing a reset. High-voltage power supplies and internal wiring should be serviced by qualified personnel. Checklist: Define capacity, accuracy, materials and operating environment before requesting quotes on a uniform basis. Request specification sheets, test reports, certificates, maintenance manuals and spare-part lists. During acceptance, verify appearance, dimensions, functions, safety protection and packaging, and keep test records. Do not compare unit price alone; include customization, freight, spare parts, after-sales support and downtime risk. Keep written records of inquiries, confirmations, FAT, acceptance and warranty commitments.