26
B_03073
OPERATING MANUAL
VERSION 06/2013
ORDER NUMBER DOC 2312956
Close:
The piston is relieved, and the product valve closes due to the pressure spring which
presses against the product valve tappet. The air valve is then closed, again with a spring
force and mechanical delay.
Additional functions:
The shaping air throttle is used to regulate the shaping air volume, while the atomizing air is
adjusted via an external pressure regulator. The two air streams do not fl ow separately until
downstream of the air valve, so that the pressure of the shaping air corresponds roughly to
that of the atomizing air and so that they infl uence each other during adjustment.
The product connections and the paint channels in the base plate are arranged so that
several guns can run in circulation mode.
5.5
SPRAYING PROCESS
With the AirCoat fl at jet process the spray product is normally atomized at a pressure of
3-12 MPa; 30-120 bar; 435-1740 psi. A soft, fl at spray is achieved with help of the atomizing
air, which has a pressure of 0.05-0.25 MPa; 0.5-2.5 bar; 7.2-36 psi. This eliminates most
overlapping problems in the peripheral zones. The shaping air allows the width of the
spray jet to be increased or decreased.
Advantages:
Large application volume.
Low fogging tendency.
Good fi nish.
High viscosity products can easily be applied.
Jet width adjustment.
5.5.1
FLAT AIRCOAT JET SPRAY PROCESS
Variable spray jet width
Air cap
Shaping air
Atomizing air
