Nordson HORIZON 200 Product Manual

Contents

Description2-2Part 106913−04 2018 Nordson CorporationSystem OperationSee Figure 2-1.Powder ApplicationA porous fluidizing plate in the bottom of the feed hopper (8) diffuseslow-pressure compressed air into the powder supply. The air fluidizes thepowder, so it can be pumped to the spray guns. A vent duct connects thehopper to the color module (10).The powder pumps (7) draw the powder out of the hopper, mix it with ahigh-velocity stream of air, and force it through the feed hoses (9) to thepowder spray guns (2). The guns electrostatically charge the powder andspray it onto the workpieces (3) passing through the enclosure (1). Thecharged powder sticks to the grounded workpieces.Powder Recovery and ReclaimThe exhaust fan (16) pulls spray-room air through the enclosure and intothe color module through an opening in the base floor. A skirt seal preventspowder from escaping from the gap between the base floor and the colormodule. The air flows through the cartridge filters (13), into the fancompartment, through the final filters (17), and back into the spray room.The standard, manual fan damper (15) (Horizon 400 only) controls thevolume of air flowing through the booth.The oversprayed powder suspended in the air collects on the externalsurfaces of the cartridge filters. At timed intervals, the pulse valves (14)force large volumes of air through the center of the cartridge filters, blowingoff the collected powder. The powder falls into the color module hoppers,where it is fluidized.The transfer pumps (12) pump the fluidized powder in the color modulehoppers through the transfer hoses (11) to the accumulator (5) on top of thesieve (6). The powder flows from the accumulator into the sieve screen.The screened powder falls into the feed hopper. The sieve dischargesparticles and clumps too large to pass through the screen into a scrapcontainer. The vent hose (4) connecting the accumulator to the colormodule helps maintain a neutral air pressure in the accumulator and sieve.Non-Reclaim SystemsYou can convert your Horizon system from reclaim to non-reclaim byinstalling a color module for the new powder and connecting the transferhoses to a scrap drum instead of an accumulator and sieve. You can thenuse a standard feed hopper attached to the color module, or a portable feedhopper, to supply the new powder to the spray guns.