1. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition HLVP spraying systems are light, mobile and easy to clean, and can produce a high quality job in a short time. There are many types of HLVP spray gun, but typically the coating is held in a pressure vessel and fed in using compressed air. Health and safety is vital when spray painting. You must use the correct PPE, prepare the site well and check all equipment. What PPE do you need when spray painting? Starting off

2. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition There are four main types of spray gun: air spray HVLP airless and air-assisted airless electrostatic. What are the advantages and disadvantages of each type of spray gun? Types of spray gun

3. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition Overspray is one of the main disadvantages of spray painting. Your preparation needs to be meticulous if you are to avoid overspray problems. How would you explain what the term ‘bounce back’ means? Preparing areas for spraying

4. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition Masking A range of materials will help protect surfaces from being damaged, including: polythene sheeting, dustsheets, masking paper hardboard, corrugated plastic, cardboard polythene bags, masking tape specialist spray shields. How would you protect the items in the illustration?

5. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition Make sure that: the paint is at the right viscosity you follow the manufacturer’s instructions Applying water-borne coatings everything is kept clean you have the proper training you get the spraying action right!

6. © Pearson Education Limited, 2008. Copying permitted for the purchasing institution only. This material is not copyright free. Painting and Decorating NVQ and Technical Certificate Level 2, 2nd Edition If you have used water-based coatings: flush with water then mineral spirits leave the pump (machine) gun and hose filled with mineral spirits shut off and unplug the sprayer turn pressure relief prime valve to ‘prime’ return prime valve to spray position. Why should you turn the pressure relief prime valve to ‘prime’? Cleaning and storing equipment