melt adhesives, the application system must be fully cleaned when changing the adhesive type as well as for long periods of standstill, and the slot on the nozzle [...] will prevent curing of the adhesive in the adhesive system and nozzle. Please find attached the official HolzHer Information leaflet on this Topic. [...] 608.00/01 PUR adhesive: PUR hot melt has a well-defined life span during which curing takes place. It is important that the 608.00/01 adhesive be completely
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