Repair 7-1Part 106913ā04 2018 Nordson CorporationSection 7RepairWARNING: Allow only qualified personnel to perform the following tasks.Follow the safety instructions in this document and all other relateddocumentation.IntroductionNOTE: The Horizon 400 powder coating systems are FM (Factory Mutual)approved. Use only approved Nordson replacement parts. Usingunapproved parts may void FM approval of your system. Contact yourNordson representative for more information.The procedures and illustrations in this section apply to both theHorizon 200 and 400 powder coating systems. Differences between thebooths are noted in the procedures.Final Filter ReplacementWARNING: Wear a NIOSH-approved respirator or dust mask and safetyglasses or goggles when handling powder or cleaning powder offequipment. Avoid getting powder on your skin. Wash with soap and wateronly.1. Shut off the exhaust fan. Shut off electrical power at the systemelectrical panel. Lock and tag the disconnect switch.2. See Figure 7-1. Unscrew and remove the threaded knobs (3) andbrackets (2) securing the final filters (1) to the fan compartment.3. Remove the old filters and discard them.4. Check the interior of the fan compartment. If you see large amounts ofpowder inside the compartment, powder is leaking through the cartridgefilters or mounting plate. Clean the fan compartment and fix the leakbefore starting the system.NOTE: Do not use damaged filters.5. Remove the new filters from their cartons. Inspect the filter housings,gaskets, and media for damage.
