Advice & Guidance

  • Increase voltage, fluidization and powder feed.
  • Check resistance between different objects on conveyer. The ideal film reading is 0 ohm.
  • Check earth connection from conveyer and outward.
  • Check spray equipment fuses, voltage, electrodes in gun mouth and all electrical connections to high tension cable.
  • Check powder by using another powder spray gun.
  • Adjust spray gun equipment parameters for uniform powder output and recommended film thickness.
  • Use fastest possible heat up rate in oven.
  • Check optimum distance between object and gun mouth.
  • Different hose lengths between powder feeds and guns
  • Air pressure too low
  • Electric fault or partial blocking of injector hose or gun
  • If problems arise due to over or under-curing from oven
  • Check that all thermostats are working properly
  • Check air circulation
  • Check metal temperature using temperature recorder.
  1. Check all fuses
  2. Check compressed air & fluidisation pressure
  3. Blow through pneumatic system with air gun
  • Check that product is completely clean before coating
  • Prevent dust from entering spray booth
  • Sieve powder and examine if there’s contamination or residue in sieve
  • This indicates contamination of object prior to coating
  • Check whether water-based paint has been used nearby
  • Check whether silicon is present in any materials or lubricants. This often happens during welding jobs
  • This usually indicates contamination of the powder, though they may also indicate contamination of the object
  • Check that compressed air is free of water and oil
  • Check that powder is free of craters when using another spray gun or by melting powder on a plate
  • Test the powder coat on other objects
  • Ensure that the cleaning / pre-treatment is proper
  • Check if under-curing is taking place
  • Check if substrate thickness or type has changed
  • Ensure powder film thickness is proper