What causes arcing inside a cooking fume purifier?

Arcing may be caused by heavy grease, deformed plates, foreign objects, damp insulators, abnormal cell spacing or high-voltage power-supply faults. If arcing continues, switch off and stop using the unit rather than repeatedly resetting it. 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.