Batavia MAXXSPRAY BT-PSG013 Manual De Usuario página 12

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advice given by the coating
manufacturer.
• Do not use materials with a flash point
below 21 °C. Follow the instructions
below.
Paint thinning
8.4
a. Stir the spraying material thoroughly
before measuring viscosity.
b. Dip the viscosity test cup (15) completely
into the spraying material.
c. Hold the test cup (15) up and measure
the time (in seconds) until the stream of
liquid stops. The resulting value is
referred to as DIN seconds (DIN
d. If the value is too high, gradually thin the
spray material by adding small amounts
of a suitable thinning agent in and mixing
the liquid.
e. Measure the DIN seconds again. Repeat
the process until you measure a viscos-
ity of less than 100 DIN seconds.
• Do not exceed the maximal viscosity of
the appliance. The spray material must
not be too thick. Otherwise, the appli-
ance might clog.
• Ensure that the spray material and thin-
ning agent are compatible. Using an
unsuitable thinning agent may cause
clots that clog the appliance. Never mix
synthetic resin varnishes with cellulose
thinners.
• Granular products and products contain-
ing solids must not be sprayed. Their
abrasive effect will shorten the service
life of the pump and valve.
• Material to be sprayed should always be
strained to remove any impurities in the
paint which may enter and clog the sys-
tem. Impurities in the paint will give poor
performance and a poor finish.
Material flash point must be 21 °C
or higher.
Fill container
8.5
(See Fig. G).
a. Unscrew the container (11) from the
spray gun.
b. After the material has been properly
thinned and strained, fill the container.
10
c. Carefully screw the container back onto
the spray gun.
Adjusting spray pattern shape
8.6
(See Fig. D).
The spray pattern shape is adjusted by
turning the air cap (2) to either a vertical,
horizontal, or diagonal position. The posi-
tions of the air cap and the corresponding
spray pattern shapes are illustrated (See
Fig. D). Test each pattern and use which-
ever pattern is suitable for your application.
Material flow adjustment
8.7
Set the material volume by turning the
). material adjustment knob (8).
-s
Proper spraying technique
8.8
• If spraying with an HVLP spray system is
new or unfamiliar to you, it is advisable to
practice on a piece of scrap wood or
cardboard before beginning on your
intended work piece.
a. Preparing the surface
• Carefully cover a large area around the
spray surface. Any surface that is not
masked could become contaminated.
• Ensure that the surface is clean, dry and
free of grease.
• Polished surfaces should be lightly
sanded and the sanding dust removed.
b. How to spray properly
(See Fig. E, F).
• Hold the spray gun at a constant dis-
tance from the object. The ideal spraying
distance is approx. 15 cm.
• Spray evenly up and down with smooth
passes at a consistent speed as illus-
trated in fig. E. Doing this will help avoid
irregularities in the finish (i. e. runs and
sags).
• Always apply a thin coat of material on
the first pass and allow to dry before
applying a second, slightly heavier coat.
• The closer your sprayer is to the object
being sprayed the more the over-spray.
• When spraying, always press and hold
the trigger of the spray gun after spray
pass has begun and release trigger
before stopping the pass. Always keep
the gun pointed squarely at the spray
surface and overlap passes slightly to