Paint Spraying Hints; Preparing The Paint - Clarke HUNTER Operation & Maintenance Instructions Manual

PAINT SPRAYING HINTS

NEVER attempt to spray unless you are wearing suitable, approved
REMEMBER that some modern paints require specialist respiratory
protection...always consult the paint manufacturers instructions.
1. GENERAL PREPARATION
a. Ensure that the area in which you will be spraying is clean and dust free.
b. Connect spray gun to compressor via suitable flexible hose.
c. With no paint in spray gun, test system for air leaks.
d. Cover adjacent pieces of equipment to prevent overspray. Mask areas
of the article not to be sprayed.
e. Ensure surface to be painted is clean, dry and free from oil and dust.
Check paint manufacturer's instructions for any special surface
preparation required.
REMEMBER - TIME SPENT PREPARING SAVES TIME SPENT FINISHING
2. PAINT PREPARATION
a. Achieve the correct paint viscosity. This should be done according to
paint manufacturer's instructions, and will vary according to type of paint.
b. Having mixed the paint thoroughly in a separate container, pour into the
spray gun paint container through a fine filter.
DO NOT OVERFILL SPRAY GUN PAINT CONTAINER - three quarters full is maximum
c. It is usually best to experiment with a couple of practice spray coats on a
piece of material with the same type of surface as the article you wish to
spray, eg. metal for a car body panel, wood for a piece of furniture etc.
PROBLEM
Paint does not atomise
(comes out in blobs)
Paint dries before hitting Paint is too thin. Air
surface, leaving it dry
with a rough texture
Finish is pitted like
Orange peel
WARNING
respiratory and eye protection.
Some common problems:
CAUSE
Paint is too thick, air
pressure is too low.
above 50 psi, unless
pressure is too high
Air pressure too high
or spray too close to
work
14
CORRECTION
Add thinners
Increase air pressure (not
specified by paint manuf.
Add more paint.
Reduce air pressure
Reduce air pressure,
increase distance between
gun and work.