PPG Training

Custom Restoration Guide 2018

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67 SPRAY GUN SETUP PD-0400 Caution: Wear the proper safety protection when sanding, cleaning, mixing and spraying all materials included within this process. 1 Determine fluid size and air cap. Follow spray gun or paint manufacturer's recommendations for the product being used. 2 Set air pressure on the high side for primers and high-solids products, lower for basecoats and low-solids products. Adjust for proper atomization and repair size. Compliant spray gun—35-45 psi at the gun HVLP spray gun—set psi at the gun, not to exceed 10 psi at the air cap. 3 Test the spray pattern horizontally. Rotate air cap to spray a horizontal pattern. Screw air control knob in to make a small round pattern to start. Test spray an open pattern to about six (6) inches wide. Use appropriate gun distance for size of repair 3-6" for small spots and 6-9" for medium to larger repairs. Aim at a target and pull trigger fully for a 3 count, then release. Check for an even pattern with even runs across the pattern. 4 Test the spray pattern vertically. Rotate air cap to spray a vertical pattern. Use appropriate gun distance for size of repair 3-6" for small spots and 6-9" for medium to larger repairs. Aim at a target and pull trigger fully for a 2 count then release. Check for an even pattern and good atomization. 5 Make final adjustment to spray pattern size. 3" for small spot repairs 3-6" for medium-to-large spot repairs and small panels 6-9" for medium panel / multi-panel repairs 9-12" for large areas / multi-panels 6 Make final adjustment to fluid delivery to match pattern size. Turn the knob in to decrease the fluid for smaller patterns. Turn the knob out to increase the fluid for larger patterns.

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