Black and Decker HVLP400 Manual De Instrucciones página 10

ENGLISH
The liquid being sprayed may need to be thinned (diluted)
before staring. When thinning, use the proper liquid thinner
recommended on the container by the material manufacturer.
Warning! Do not use materials with a flashpoint lower than
55°C.
Note : A mixing bucket (12) is provided to use when transfer-
ring spray material from the original container into the bucket
for thinning and measuring purposes (fig. K).
Note : A viscosity cup (13) is provided to determine the
"runout time" of the material being used.
Before measuring for the proper viscosity, stir the material
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thoroughly.
Dip the viscosity cup (13) into the material being sprayed
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and fill the viscosity cup (13) completely.
With the viscosity cup (13) held over the material con-
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tainer, measure the amount of time it takes for the stream
of material flowing out to "break" or stop being a constant
stream out of the bottom of the viscosity cup (13) (2
minutes or less) (fig. L). This is the "runout time" Refer to
the thinning table for information on the thinning required
for different materials.
If material needs thinning, add the appropriate liquid thin-
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ning material recommended by the manufacturer.
It is possible to spray latex paint with this unit, however,
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the required thinning may exceed material manufacturer's
recommendation. Thin latex paint so that it runs through
viscosity cup (13) in under 2 minutes. The operator should
consider the type of application and final location of the
project when spraying a material that requires more than 2
minutes to run through the viscosity cup (13).
Thinning table
Spray material
Clear and semi-transparent stains
and sealers
Oil based primers, varnishes and
polyurethane
Solid colour water based stains
Water based or latex paints
Note : Not recommended for textured paint
10
(Original instructions)
Runout time
No thinning required
(Less than 2 minute runout)
May require thinning
(More than 2 minute runout)
Hints for optimum use
Preparation tips
Always stir and strain the material thoroughly before use.
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With any spraying job you should always ensure that
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you have properly prepared the surface to get the best
finish. That is, all surfaces are free from dust, dirt, rust and
grease. Lightly pressure wash decks or exterior surfaces
and ensure that they are dry before spraying.
Even though HVLP sprayers have very little overspray,
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it is recommended that you mask all edges and other
areas and use drop cloths to protect your floors and
anything else in the spraying area that you wish to remain
untouched.
Skin that forms on the top of paint can clog the sprayer.
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Remove skin before mixing. Strain with a funnel with a
filter attached or through hosiery to remove any impurities
that could clog system.
Before starting have gloves, paper towels, rags etc. avail-
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able for unexpected spills.
Developing the proper spraying technique (fig. M & N)
Practice spraying on a piece of scrap material such as
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cardboard to test your spray pattern and become familiar
with the flow control feature of the sprayer.
Ensure surface to be sprayed is free of dust, dirt, and
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grease.
Ensure spray area is clean and free of dust that could be
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blown onto newly sprayed surfaces.
Cover any areas not intended to be sprayed.
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Always spray from a minimum of 25mm to a maximum of
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355mm (fig. M).
A commonly used method for spraying a large surface
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is the "crisscross" pattern. This is done by spraying in
horizontal strips and then crossing over these strips with
vertical strips.
To get an even spray distribution, always keep your arm at
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the same distance (fig. M) from the surface you are spray-
ing and avoid moving your wrist (fig. N).
Maintain smooth and consistent speed which will help
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avoid inconsistencies. Begin spraying after the pass has
begun and release trigger before stopping the pass.
Avoid spraying too heavily in any one area. Several lighter
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coats are better than one heavy coat which can lead to
running and dripping. Remember that the flow control
knob regulates the amount of liquid that can be sprayed.
Turning the flow knob clockwise increases the flow of
liquid. Turning the knob counterclockwise decreases the
flow of liquid. If runs or drips do occur, have a dry paint
brush on hand to smooth them out.
Turn the power unit off and place the sprayer in the built-in
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dock of the power unit when not spraying for any length of
time.