61B_00071B_03214OPERATING MANUALEDITION 07/2014 ORDER NUMBER DOC 23445008.6.4 TEST OF SPRAY PATTERNStart AirCoat spraying (without electrostatics)1. Start up with product supply set to approx. 8 MPa; 80 bar; 1,160 psi operating pressure.2. Spray (release locking device and pull trigger) and at the same time, check theatomization.3. Set the product pressure on the product supply to the point where a good productatomization is achieved.4. Open the air pressure regulator for the atomizing air and adjust it so that an optimalatomization is achieved. (The interrelation between spray pattern and atomizing airis shown in the fi gure below).5. With the air adjustment on the gun, set the ratio shaping air / atomizing air so as toachieve an optimum spray pattern.Note:Repeat points 4 and 5 until the optimum spray pattern is reached (iterative process).Spray pattern shapesNo atomization air Too little atomization air Correct amount of atomization airInfluence of the air adjustment on the spray pattern shapeThe spray pattern can be adjusted to suit the object to be sprayed using the air adjustment.The illustration shows the influence of the shaping air regulator on the spraying pattern.Other nozzle sizes can be used to obtain larger or smaller spraying patterns.Closed airadjustmentCompletely opened airadjustmentNoticeThe paint output can be changed by:changing the product pressure orusing a different flat jet nozzle (see Chapter 12.2).
