• SWITCH OFF WHEN NOT SPRAYING - Avoid
running the unit with the flow rate knob fully closed
for any length of time.
We accept no responsibility for damage caused by
the use of unsuitable substances, or paints that
have not been thinned correctly, and any health hazards that
arise from lack of adequate ventilation
IMMEDIATELY SWITCH OFF THE SPRAY
GUN WHEN:
• Interruption in the mains plug, mains lead or mains
lead damage.
• Defect switch.
• Smoke or stench of scorched isolation.
OPERATION INSTRUCTIONS
PREPARATION
Fig. B.
Do not use textured wall paints or coatings as this
will block the nozzle.
To obtain the best results, it is important that you
prepare the surface to be sprayed and thin the paint to
the correct viscosity, before you operate your spray
gun. Always ensure that the surfaces to be sprayed are
free from dust, dirt and grease. Make sure that you have
masked the areas that should not be sprayed, using a
good quality masking tape. The paint or fluid to be
sprayed should be thoroughly mixed and free from
lumps or other particles. Many substances can be
sprayed with your spray gun, but always check the
manufacturers recommendations before purchasing
your paint.
THINNING
Always remember to disconnect from the mains
supply before filling the paint container with
sprayable material.
Most paints are supplied ready for brush application and
will need to be thinned before they are suitable to be
sprayed. Follow the manufacturers advice on thinning
the paint when used with a spray gun. The viscosity cup
will help you to determine the correct viscosity of paint
to be used. To determine the correct viscosity, fill the
cup to the brim with the paint. Measure the amount of
time it takes for the cup to empty back into the can. The
table below shows recommended times for different
types of material.
Plastic & latex paint | 24 - 28 seconds
Water based paint | 20 - 25 seconds
Primers | 24 - 28 seconds
Varnishes | 20 - 25 seconds
Oil based paints | 18 - 22 seconds
Enamel paints | 18 - 22 seconds
Aluminium paints | 22 - 25 seconds
Car undersealing | 25 - 35 seconds
Wood sealers | 28 - 35 seconds
Wood preservatives | No thinning required
Wood stains | No thinning required
If the paint takes longer than the recommended time to
empty, then further thinning is required. Mix in a small
quantity of the appropriate thinner and use the viscosity
test until the correct thickness is achieved. Some
sprayable materials contain particles and lumps. These
materials should be strained before filling the paint
container.
SPRAYING
Fig. C.
Fill the paint container with the correctly thinned and
strained paint. Connect the spray gun to the mains
supply. Aim the spray gun at a piece of scrap material and
operate the trigger switch until paint is spraying. Adjust
the output control (2) until the required volume of paint
is spraying. Turn the output control in a clockwise
direction (B) to reduce the flow and anti-clockwise (A)
to increase the flow. Adjustment of the output control
will affect the spray pattern. A poor spray pattern will
concentrate the paint in the centre of the spray and give a
blotchy finish. A good spray pattern will give even
distribution of paint throughout the pattern.
SPRAYING TECHNIQUES
Fig. D.
To obtain the best results, keep your spray gun level and
parallel to the surface at all times.
Keep the nozzle 25 - 30 cm from the surface and spray
evenly from side to side or up and down. Do not spray at
an angle as this will lead to paint runs on the surface. Use
smooth and even strokes. When spraying large areas,
use a criss-cross pattern as shown.
Fig. E.
Never start or stop the spray gun while it is aimed at the
surface to be sprayed. Evenly control the speed of
movement of the spray gun. A fast speed of movement
over the surface will give a thin coat and a slow speed will
give a heavy coat. Apply one coat at a time. If a further
coat is required, make sure you observe the
manufacturers drying time recommendations before
applying a second coat. When spraying small areas, keep
the output control on a low setting. This will avoid using
too much paint and prevent overspray. Where possible,
avoid stopping and starting when spraying an object. This
can lead to too much, or not enough paint being applied.
Do not tip the spray gun to more than 45°
FITTING AND USING THE FLEXIBLE
NOZZLE
Fig. F.
The flexible nozzle extension should be used to spray flat
or horizontal surfaces. It should also be used in areas
with limited access.
4 Ferm Ferm 45
