Nordson Auto-Flo II Product Manual

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Auto-Flo II Zero Cavity Dispense Valves 9Part 1103506-06 2018 Nordson CorporationTable 1 Water TypesWater Description1. Distilled No minerals and chemicalsLacks the nutrients necessary to support biological growth and the minerals that wearaway at system componentsNeutral nature reduces interaction with additives used to protect the systemNOTEDistilled water is the best choice for use in thetemperature conditioning section.2. Well Contains an abundance of minerals that can support plant and animal lifeContains minerals like calcium and iron that are abrasive; accelerates wear and tearon componentsNOTEIf well water is the only option available, it mustbe softened to reduce the mineral content.3. City Contains chlorine that can degrade all metals including stainless steelHard on most non−metalsUsually contains an abundance of minerals that are capable of supporting plant andanimal life; accelerates wear on components4. Weld (Tower) Often heavily treated both for bacterial suppression and to make it more compatiblewith the welding and cooling tower processesTreatment process usually involves some aggressive chemicals that can degrademetals, plastics and other materialsUsually contains an abundance of metals and other contaminants picked up from thewelding and cooling tower processes that can interfere with the components of thetemperature control system5. DI ! CAUTION !Do not use DI water in this system. DI water drawsfree electrons from metal to normalize ion levels. Thisprocess causes degradation of metals.