64OPERATING MANUALEDITION 07/2014 ORDER NUMBER DOC 2344500Functional fault Cause RemedyInsufficient product output Nozzle too small. Select larger nozzle(see nozzle table 12.2 und 12.3).Product pressure too low. Increase product pressure.Gun fi lter or high pressure filter cloggedat pump.Clean or replace filter.Nozzle is clogged. Nozzle cleaning(see Chapters 7.3.3 to 7.3.8).Poor spray pattern Atomizing air incorrectly adjusted. Readjust the atomizing air.Nozzle is too large. Select a smaller nozzle(see nozzle table).Product pressure too low. Increase the product pressure atpump.The product viscosity is too high. Thin product in accordance with themanufacturer's instructions.Valve rod leaks Seals at the valve rod are damaged. Replace the seals (see Chapter 8).Loose packing TightenPoor wrap-around Insufficient grounding. Check grounding.Inadequate electric resistance of thelacquer.Check lacquer resistance(see Chapter 2.5).Spraying pressure too high. Readjust spraying pressure.Back-spray No grounding Check grounding.Distance between spray gun and workpiece too large.Reduce distance between spray gunand work piece.Nozzle nut placed too far forward Move nozzle nut back(Decrease air distributor ring gap).No wrap-around High-voltage switched off. Switch on the high-voltage switch.No electrostatics. Repair malfunction as laid downin the control unit operatinginstructions.10 TROUBLESHOOTING AND RECTIFICATION
