Ozito MPS-700, Instruction Manual

Page: 9 / 18

8
PREPARATION (cont.)
Thinning
Thinning is particularly important when spraying. Most paints are supplied ready for
brush application and need to be diluted sufficiently for spraying purposes.
Follow the manufacturers guide for thinning in conjunction with a spray gun. If in
doubt please consult the manufacturer of the paint. The viscosity cup supplied will
help you determine the correct thickness of the paint. As some paints, wood
preservatives and other sprayable materials contain particles and have different
qualities, please ensure that when filling the paint pot on your spray gun, the paint is
filtered through either a funnel with a filter on it, or through nylon tights or stockings.
This will ensure no large particles enter the paint pot, therefore preventing blockages
and providing you with trouble free spraying. Ensure that a face mask, gloves, goggles
and ear protectors are worn at all times when spraying.
Floetrol
®
is an acrylic paint conditioner that you can add to the paint pot which is for
easy, trouble-free spraying. It helps thin your paint however also reduces wear and
replacement cost of parts within the spray gun. It also reduces tip clogging avoiding
freeze up in the trigger which gives you a professional finish. Floetrol
®
is available from
Bunnings Warehouse.
Determining Viscosity
Information regarding dilution is normally found on the material tin.
Use the viscosity table to determine the thickness of the coating
material.
First stir the spraying material thoroughly then to determine the
viscosity, dip the viscosity cup into the material below the rim level
and fill up. Lift the cup out of the tin and start timing as soon as the
cup is above the surface. Time how long it takes the viscosity cup
to empty (Fig. 1). Use the chart below as a guide to determine if the
material requires further thinning and thin accordingly, within the material
manufacturers recommendations.
This runout time is called DIN seconds (DIN-s). Use this table as a guide only.
Material Viscosity Seconds (DIN-s)
Oil based paints 20-80
Primers 20-50
Clear vanishes 20-50
Water based paints 20-80
Oil enamel 20-80
Oil based primer 20-50
Oil stain undiluted
Clear sealer undiluted
Polyurethane undiluted
Varnish 20-50
Wood preservatives undiluted