Spray Gun Setup - Kobalt SGY-AIR70TZ User Manual

SPRAY GUN TERMS
Internal Mix
Process where the air and paint are mixed inside the air cap just before being
sprayed. This method is best for heavy bodied, slow drying paints and can only be
used with the pressure feed method. Do not use fast drying latex paints with internal
mix. The paint will dry inside and quickly clog the air cap.
External Mix
Process where the air and paint are mixed just after leaving the nozzle. This type of
mix should be used for fast drying latex paint and when a high quality finish is needed.
Pressure Feed
Method of material feed where a canister or paint tank is pressurized to force material
to the gun. Either internal or external mix air caps are used with this method. Pressure
feed is generally used for heavy bodied latex paints or for larger size projects.
Siphon Feed
Method of material feed where atmospheric pressure creates a partial vacuum to
siphon material to the gun. Only external mix air caps are used with this method.
Siphon feed is used with light bodied latex paints.
Bleeder
In this mode, air passes continuously through the gun whether spraying or not. This
mode is generally used when the air is supplied by a continuously running air
compressor without tank.
Non-Bleeder
In this mode, air flows only when the trigger is pulled. This type of operation is
used with an air compressor equipped with a tank or with a large factory air system.
Do not use with a continuously running air compressor that does not have a tank.
SPRAY GUN SET-UP
Use of Air Caps
Internal Mix - Generally used with slow drying, heavy bodied latex
paints and for faster material application. NOT to be used with fast
drying latex paints which will clog the opening in the air cap. Internal
Internal mix air cap
mix caps must be used with pressure feed operation.
External Mix - Used for quick drying, light bodied latex paints. Better
for fine finish work. These caps can be used with either siphon or
pressure feed.
external mix air cap
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