9
Starting to Spray - Direct from the can (or Gemini bucket)
- Before starting your project, practice spraying onto waste cardboard – this will ensure
that you get some practice and allow you to set the Gemini to the right setting. The flow
rate will vary dependant on what you are spraying.
- If your spray pattern (pass) is diminishing as you spray - then increase the paint speed
dial on the unit (Fig.20) setting.
- To prevent clogging of the needle, tip and air cap at the front of the gun use a clean
cloth to wipe clean at regular intervals.
- To improve atomization/ quality of finish decrease the paint flow adjuster on the gun.
1. On the head unit set paint speed dial on the gun (Fig.15) to setting 3.
2. Remove the gun from the docking station and set paint flow adjuster on the spray gun to lowest
setting.
3. Turn the Pump (Fig.17) on and then the Turbine (Fig.18) on.
4. Gradually open paint flow adjuster a little at a time until you are comfortable with the amount of
paint that is spraying from the spray gun (Fig.16).
5. You can fine tune the spray output with the paint flow adjuster on the gun - ¼ to ¾ turn
produces the best spray quality and improves atomization/ quality of finish (Fig.16).
6. If the spray is too heavy, turn the paint speed dial on the unit anti-clockwise towards minimum
on the head unit (Fig.19).
7. If the spray is too light, turn the paint speed dial on the unit clockwise towards maximum on the
head unit (Fig.20).
8. You are now ready to start your project using standard HVLP spraying technique (see
technique section).
Fig.15
Fig.17
Fig.19
Fig.20
(Water-based coatings only)
Fig.16
Fig.18
Top Tips
Evenly control the speed of movement of the spray gun. A fast speed will give a light coat and a slow speed will give a heavy coat.
Avoid stopping and starting when spraying a surface as this can lead to too much or not enough material on a surface.
To ensure edges are covered, commence spraying just to the side or above/below the area being sprayed.
Do not spray outside when humidity is above 60% or temperature is above 90˚F (32˚C) or below 45˚F (7˚C).
Finishing Tips
Orange Peel: Reduce viscosity. Increase atomization with a smaller fluid tip (5). Spray area may be too cold.
Sags or Runs: Move spray gun faster. Spray lighter coat. Increase atomization.
Wet and Milky: Finish applied too heavy. This condition is prone to trap water within coats. Apply lighter coat.
Blushing: Seal coat applied over solvent-based stain that has not been completely dried.
Rough Surface: Seal coat not sanded enough. Sand smooth and re-coat.
Fish Eyes: Surface is contaminated. Clean surface, sand area and re-coat.
(32 pages)
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