Nordson Encore HD Customer Product Manual
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Troubleshooting 5-5Part 1604870-05 2018 Nordson CorporationH25(XT)Flow Air Flow High Fault Switch to Classic Flow mode. This mode lets you set andview actual flow and atomizing air so you can diagnose theproblem.If the spray gun is triggered off when the help code appears,disconnect the air tubing from the appropriate air output fittingand plug the fitting. Clear the help codes. If the code doesnot reappear then the proportional valve is stuck open. Referto the Repair in the pump control unit manual for cleaninginstructions.If the spray gun is triggered on when the help code appears,disconnect the air tubing from the appropriate output fittingand set the flow to zero. If air is still flowing from the fittingthen plug the fitting and clear the help codes. If the code doesnot reoccur then the proportional valve is stuck open. Refer tothe Repair section in the pump control unit manual forcleaning instructions.If the help code re-occurs and the controller interface isshowing air flow, then check for leaks around the proportionalvalves or transducers on the iFlow module.If the help code persists, re-zero the module as described onpage 5-13.Refer to the Repair section in the Encore XT Manual PowderSpray Systems manual for procedures using the iFlow AirFlow Verification Kit to check the operation of the iFlowmodule proportional valves and the output of the precision airpressure regulator.H26(HD)Pattern Air Flow High Fault Check if input pressure is less than 110 psi (7.6 bar).Check if the internal regulator is set to 85 psi (5.7 bar) with thespray gun triggered ON.Check for contamination in the proportional valve.Check for oil/water contamination.Trigger the spray gun OFF and reset the fault. If the fault returnswithout triggering the spray gun ON, remove the 6 mm blue tubingand check for air leaks. Make sure the system controller istriggered OFF.Check that no air is leaking from the port of the pump control unit.If air is leaking, remove the proportional valve and clean it. If airis not leaking, plug the 6 mm pattern port and perform the Re-ZeroProcedure on page 5-13.Perform the Conveyance Air Flow Verification for HD procedureon page 5-13.Check for water and/or oil contamination in the transducer filtersby removing the board from the flow manifold. Replace filters with1604436.H26(XT)Atomizing Air Flow High Fault See H25 (XT)Continued... |
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