• Helpful Hints

    TROUBLESHOOTING GUIDE

    This page is a simple guide that may help you trouble shoot common powder coating problems. You can scroll through the page or choose what your problem may be and it will take you to that section.

    Application Problems

    POOR FLUIDIZATION

    Possible Cause
    Solutions
    Problem: Air blowing large holes through powder surface.
    Powder level too low
    • Add powder until feed hopper is filled to proper level
    Packed or moist powder
    • Manually loosen powder and fluidize with clean dry air
    • Check compressed air for oil/water and room for high humidity
    Obstructed membrane
    • Check bottom of feed hopper for obstructions/oil/water.
    Powder particle size
    • Maintain consistent ratio of virgin to reclaim
    Problem: Powder blowing out of hopper
    Fluidizing air pressure too high
    • Reduce air pressure to fluid bed
    Insufficient hopper ventilation
    • Check hopper vent for blockage
    • Check vents assist for obstructions and correct air supply
    Powder too fine
    • Reduce the amount of reclaim added to virgin powder
    Problem: No air percolation through to powder surface
    Insufficient air pressure
    • Increase air supply to fluid bed
    Blocked membrane
    • Clean membrane, remove any dirt, grease and obstructions.
    • Check air supply to ensure it is clean
    Obstructed membrane
    • Remove all obstructions on the membrane

    Compacted powder on membrane
    • Manually loosen powder and fluidize with clean dry air

    Film Properties Problems

    POOR FLOW

    Possible Cause
    Solutions
    Problem: Too much orange peel
    Film thickness too low/high
    • Increase/decrease film thickness by adjusting application equipment
    Oven temperature too low
    • Set oven to correct temperature
    Heat up rate too slow
    • Modify oven baffling heat rate at front of oven
    Back Ionization
    • See application section Back Ionization above