Part No. .............................................................. 5080815
Parts and Servicing
Please be aware that certain parts of this spray gun will wear, requiring replacement
and that these parts are not covered by your guarantee.
These parts include the atomising valve, spray nozzle, piston and spring. The wear
on these parts depends on the abrasiveness of the materials being sprayed. More
abrasive materials such as latex paint (emulsions) will cause these parts to wear
much faster. You would normally expect to replace an atomiser valve after spraying
between 25-45 litres of latex.
Replacement valves are available from your dealer or the Clarke International
Parts Department.
For Spare Parts and Service, please contact your nearest dealer, or Clarke
International, on one of the following numbers.
PARTS & SERVICE TEL: 020 8988 7400
PARTS & SERVICE FAX: 020 8558 3622
or e-mail as follows:
PARTS: Parts@clarkeinternational.com
SERVICE: Service@clarkeinternational.com
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Thank you for purchasing this Clarke PS1 Spray Gun. Before attempting to use this
appliance, please read this instruction manual thoroughly, and carefully follow all
directions given. This is for your own safety and that of others around you, and to
help you achieve long and trouble free service from your spray gun.
Guarantee
This product is guaranteed against faults in manufacture for 12 months from
purchase date. Please keep your receipt as proof of purchase.
This guarantee is invalid if the product has been abused or tampered with in any
way, or not used for the purpose for which it is intended. The reason for return must
be clearly stated.
This guarantee does not affect your statutory rights.
For Your Own Safety
WARNING!
Compressed air can be dangerous. Follow these safety instructions carefully.
✔ ALWAYS wear a suitably approved breathing mask when spraying, to protect against
inhalation of paint spray or fumes. An air feed mask may be required when spraying
some types of paint. If in doubt, check with the paint manufacturer.
✔ ALWAYS make sure there is adequate ventilation. Do not spray in confined or
enclosed areas.
✔ ALWAYS keep the spray nozzle in place when spraying.
✔ ALWAYS check the manufacturers data sheets on the products being sprayed
for any particular hazards and follow the manufacturers instructions. Take
particular care when spraying isocyanate paints.
✔ ALWAYS disconnect the spray gun from the air supply when not in use and
before any disassembly.
✔ ALWAYS thoroughly clean the spray gun after use. See ‘Maintenance’
✗NEVER spray products containing halogenated hydrocarbons such as
trichloromethane or methylchloride, as they can react chemically with
aluminium or zinc to produce an explosive hazard.
✗NEVER spray paint towards people or animals. In the case of injury, seek
expert medical advice immediately.
✗NEVER smoke while spraying or preparing paints, or spray near a naked flame
or heat source. Many paints are flammable.
✗NEVER allow children to use or play with this appliance.
✗NEVER exceed the maximum input air pressure of 2.5 bar (37 psi)
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Parts Identification
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Using the Spray Gun
The PS1 Spray Gun is fed with paint by a siphon (or suction) effect from the paint
cannister. The air flow through the air cap draws paint up the feed tube, into the
nozzle assembly, where it is atomised and sprayed forward.
Mix the paint to the correct viscosity for spraying according to the manufacturers
instructions, and strain it into the paint cannister through a fine mesh filter. When
mixing the paint, make sure that you have enough thinners left to clean the spray
gun after use.
Do not fill the paint cannister to more than 3/4 full - i.e. no more than 750cc. Make
sure that the top edge of the cannister and the sealing gasket are clean and free
from damage before mounting the cannister on the gun.
Set the spray pattern and fluid flow using the adjustment screws on the spray gun.
The spray pattern is variable between round and fan by adjusting the air flow
through the air cap. Turn the spray pattern adjusting screw anticlockwise to increase
flow and give a fan shaped spray pattern. Turning clockwise to close off the air
flow will give a circular pattern. Set the fluid flow according to the paint in use and
the spray pattern by using the fluid flow adjustment screw; anticlockwise to increase
flow, clockwise to reduce flow. As the width of the spray is increased, fluid flow will
also need to be increased.
The air pressure needed will vary according to the paint in use, with thicker paints
needing greater pressure. For most paints, a pressure of between 0.75 and 2.5 bar
(approximately 11 - 36 psi) is adequate.
To reduce overspray and to obtain maximum transfer efficiency, always use the
lowest possible air inlet pressure that produces an acceptable spray pattern.
NOTE: A good spray pattern is achieved when there is an even amount of material in
a fine spray throughout the pattern.
A poor spray will concentrate the paint in the centre of the spray and produce a
blotchy finish
To determine the correct spray pattern and volume for your particular application,
proceed as follows:
1.Turn the Spray Pattern Adjuster fully anticlockwise .
2.Pull the trigger to test the pattern, aiming at a piece of card/newspaper etc.
3.Continue pressing the trigger whilst turning the Adjuster clockwise until the
pattern is correct.
NOTE: If you have carried out the above procedure and the spray pattern is still not
satisfactiory.....then it is likely that the paint requires further thinning.
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Air Supply
For best results, the air supply to the spray gun must be clean and dry, with no oil
or water contamination. Follow the air compressor manufacturer is guidelines on
installation and operation to ensure that your air supply is as clean as possible. The
compressed air supply line to the spray gun must be fitted with an oil and water
extractor and a suitable pressure regulator.
Connect the air supply to the spray gun using a suitable 1/4 BSP fitting or quick fit
coupling. Air delivery must not exceed 2.5 bar.
Paint Selection
ALWAYS check the manufacturers recommendations when selecting your paint.
Although many paints are suitable for spraying, some are not.
DO NOT use for spraying heavy exterior textured paints or coatings.
Surface Preparation
To obtain best results, it is vital that the surface to be sprayed is well prepared. It
must be clean, free from dust, dirt and grease. Mask any area that is not to be
sprayed.
Thinning the Paint
Thinning is particularly important when paint spraying. Most paints are supplied
ready for brush application and need to be sufficiently diluted for spraying
purposes. Always follow the paint manufacturers instructions. If in doubt, always
consult the paint manufacturer.
A Viscous Cup (not provided), will assist in determining the correct thickness of the
paint.
Ensure the paint is free from lumps or
other matter, if necessary strain it
through a coarse filter.
The ideal viscosity for most paints is
given in the chart opposite.
Dip the cup into the paint and fill to the
brim. Time how long it takes for the cup
to empty.
Water based paints ...... 35 - 45 secs
Oil based paints ........... 15 - 25 secs
Enamel paints ............... 15 - 25 secs
Primers ........................... 20 - 30 secs
Varnishes ....................... 20 - 25 secs
Aluminium paints ......... 15 - 25 secs
Wood preservatives ..... Do Not Dilute
Wood Stains .................. Do Not Dilute
Smooth Masonry paint...dilute by 5 - 10%
ALWAYS check with manufacturer
Thin as required until times are achieved
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Spraying Technique
When spraying, the Spray Gun should be held
square to the surface being painted, at a distance
of 8 to 12 inches (20 - 30cm) from the surface.
Keep the gun parallel to the surface being sprayed,
starting the stroke before pulling the trigger, and
releasing the trigger before ending the stroke.
Overlap each stroke over the preceding stroke to
obtain an even finish. The paint cover should be
even and wet when spraying.
If the Spray Gun is too far from the surface, or the
paint is too thin, the paint will dry before hitting the
work, resulting in a rough, sandy finish. Allowing
overspray to fall on a finished area will also result in
a rough finish. Too much paint feed or holding the
gun too close to the work will lead to runs and
sagging.
Let your arm control the Spray Gun, NOT your wrist.
Helpful Hints
1.
Evenly control the speed of movement of the spray gun. A fast speed will
give a thin coat and a slow speed will give a heavy coat.
2.
Only apply one coat at a time. If a further coat is required follow the paint
manufacturers instructions for drying times.
3.
If spraying small areas or objects keep the output setting low as this will avoid
excessive use of paint and will minimise overspray.
4.
When spraying large areas or objects, it is best to
use a criss-cross pattern, either from left to right
then up or down or vice-versa. This will ensure
maximum coverage
5.
Avoid stopping and starting when spraying as this
can lead to too much or not enough material on
a surface.
6.
To ensure edges are covered, commence spraying just to the side of area
being sprayed, continue and do not stop until the spray has gone past the
opposite edge.
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Maintenance
WARNING!
Disconnect the spray gun from the air supply, and relieve any pressure in the
gun and hose, before any disassembly.
It is essential that the spray gun is kept clean. Dried paint in the nozzle assembly or
airways will stop the gun from working. For the gun to perform at its best it must be
cleaned and lubricated after every use. It is not recommended that you immerse
the whole gun in solvent or thinners as this could have an adverse effect on the
valve packings and seals and lead to leaks and spitting. Problems caused by
poor cleaning are not covered by your guarantee.
After use, empty any remaining paint from the paint cannister, wipe it clean with
a dry, lint free rag, and fill with thinners. Spray the thinners through the spray gun
until it is clean.
Clean the outside of the gun with thinners and a lint free rag, using a bristle brush
if necessary. The front of the gun can be soaked in thinners if required, but do not
allow thinners to reach the valve packing. The air cap can be removed for
cleaning, but do not poke any of the holes in the air cap or nozzle with metal
instruments. These holes are precision drilled, and can be damaged by probing
with anything harder than a wooden toothpick.
Make sure that the air inlet vent to the paint cannister is kept clean. Blockages in
this vent will prevent an even material flow to the gun.
After cleaning, lubricate the gun. Use a light machine oil on the fluid needle and
air valve packing, and the trigger pivot point. Use vaseline on the fluid needle
spring. Do not use lubricants containing silicon, as these can affect the paint finish.
Do not mix components from spray guns, even those of the same type. Do not
overtighten components, and be careful not to cross thread any parts on assembly.
Check the air supply hose regularly for any signs of damage, and replace it if
necessary. Do not use damaged or leaking hoses.