Sraying Troubleshooting Chart - AIRLESSCO HSS 9000 Service & Operation Manual

SPRAYING TROUBLESHOOTING CHART
Problem
Coarse Spray, Spotty Pattern
Excessive Overspray (Fogging)
Spray Pattern Excessively Wide
Spray Pattern Excessively Narrow
Excessive Paint Delivery
Paint Film Runs/Sags
Spray Pattern Rounded and Heavy:
Pump Does Not Keep Up
Spray Pattern Pulsates/Irratic:
Pump Does Not Keep Up
Thin or Spotty Coverage (Holidays)
Thin Coverage in Center of Pattern
(Fingers)
Spray Pattern Irregular, Deflected
Excess Paint Builds on Tip Guard
Drips, Spits From Tip
Tip Clogs Continually
Gun Filter Clogs Quickly
*See "REV-TIP Selection Chart" in
this manual (Page 14)
Cause
Pressure setting low
Irratic spray gun/hand motion
Pressure setting high
Paint over thinned/reduced/cut
Incorrect fan width selection
Incorrect fan width selection
Large tip orifice for application
Paint over thinned/reduced/cut
Excessive pressure
Spray gun/hand speed slow
Tip worn beyond use
Pump worn or malfunctioning
Small tip orifice
Spray gun/hand speed fast
Tip size larger than pump specs
Low pressure setting
Pump worn or malfunctioning
Tip orifice partialy clogged
Tip damaged
Spray gun excessively close to
surface
Pressure setting high
Valve seat and/or ball in gun head
damaged or worn
Debris in paint
Gun filter missing
Coarse filter mesh
Debris in paint
Pump inlet strainer missing
Correction
Increase pressure setting
Use a steady, parallel pass
Reduce pressure setting
Use less thinner/water/reducer
Select narrower fan width tip*
Select wider fan width tip*
Select smaller tip orifice*
Use less thinner/water/reducer
Reduce pressure setting
Increase pass speed
Replace with new tip*
Service pump
Select larger tip orifice*
Decrease pass speed
Replace with correct tip for pump*
Increase pressure setting
Service pump
Clean tip carefully
Replace with new tip*
Hold gun further from surface sprayed
Reduce pressure setting
Service spray gun, replace valve
assembly
Thouroughly strain paint before use
Insure gun filter is in handle
Use fine mesh filter in gun handle
Thouroughly strain paint before use
Do not operate without intlet strainer
13