In the Paint Spray Booth what are steps needed to keep contamination to a minimum?
- Close all doors, keep booth operating in balanced spray mode when not in use.
- Leave the booth running in the paint mode while loading and unloading each vehicle.
- Replace compressed air hose to hanger when not in use.
- Never mop the booth floor. Each evening prior to closing:
- Place the booth in the spray mode.
- Close all doors.
- Place the wet/dry vac outside the booth and vacuum the floor. Vacuum the walls at least once a week or more if needed.
Remember, for best results:
- Change burner and floor filters on a regular schedule.
- Maintain uniform airflow across the entire length of grating.
What Preparation should take place inside of spray booth prior to painting and while painting?
- With spray booth operating in the paint mode, load vehicle, centered over grates front-to-back and side-to-side.
- Close all doors, blow-off vehicle and masking paper with 40 psi.
- Tack six feet of compressed air hose closest to gun connection and place on hose rack.
- Bag vehicle, placing the paper over the plastic bag and tape paper to plastic.
Paper or plastic cover should not extend more than 6 inches below the vehicle.
Never cover any wheel well 100%. Use throw-away or reusable wheel covers.
- Observe spray booth balance gauge. Needle must be set at balanced to remove any airborne contamination during both the spray mode.
- Blow-off repair area and paper with 40 psi.
- Chemical-wipe surface and paper with pre-saturated wipers for optimum surface conditioning prior to painting.
- Tack repair area and masking paper with new OEM (or equal) tack rag.
- Prepare and store enough base material in spray booth to complete the number of coats for proper coverage (only if mix room is not connected to spray booth).
- Prior to first coat of base, blow off and tack the paint suit inside the booth away from the repair area.
- In proper attire (a clean painter's suit) apply first base coat per paint manufacturer instructions.
- Apply additional coats of base as required.Blow-off (40 psi) and tack repair area and masking paper between each base coat.After the last coat of base has been applied and properly dried, blow off (40 psi) and tack the surface with a new tack rag.
- Prior to applying the first coat of clear, blow off and tack the painter's suit inside the booth away from the repair area.
- Prepare and store enough clear material in spray booth to complete the number of coats for proper coverage (only if mix room is not connected to spray booth).
During this phase, never leave the spray booth enclosure.
- Allow the spray booth to flash at least three minutes before changing over to the cure cycle.
This flash of three minutes allows for the clear over spray to be removed from the cabin, providing a clean atmosphere for curing.
- Allow the spray booth to cool down for a minimum of five minutes after the bake cycle before removing.
Remember, the spray booth must be operating in the spray cycle and only open one set of entrance/ exit doors when unloading the vehicle.
What preparation should always be done before moving into spray booth?
- Chemical wash the repair surface, outside the spray booth. Use only the highest-quality lint-free towels available.
- Blow off with high pressure (100% of vehicle).
- Paper and tape around repair area with 18" high quality masking paper.
- Repeat the chemical wash procedure.
- Blow-off with high pressure (100% of vehicle).
- Tack repair area and 18" masking paper.
In the Mixing Room/Area what are steps needed to keep contamination to a minimum?
- Use only fine nylon strainers.
- Tighten lids on partially used containers.
- Replace spray gun cup strainer weekly.
- Store throwaway mixing cups in a dust-free container, use once and discard.
- Use only metal mixing sticks.
- Place paint strainer directly over paint cup, keeping airborne dust from entering cup.
- Provide a clean surface during all mixing of material.
- Store painter's suit in clean, filtered mix room, or in a storage cabinet just outside the booth.
Prior to any spray operation, this suit must be completely free of all lint, overspray, and airborne contamination. A thorough cleaning and blowing off outside the booth is mandatory.
- Pressure rinse all spray guns with clean solvent (never wipe out interior of cup) and store with lid attached.