General Safety Information - Husky HDS790 Instructions D'utilisation Et Manuel De Pièces

Operating Instructions and Parts Manual

General Safety Information

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Never spray into the compressor,
compressor controls or the motor.
3. Do not smoke or eat when spraying
paint, insecticides, or other
flammable substances.
Do not spray flammable
materials in vicinity
of open flame or near
ignition sources. Motors, electrical
equipment and controls can cause
electrical arcs that will ignite a
flammable gas or vapor. Never
store flammable liquids or gases in
the vicinity of the compressor.
Do not misuse
this product.
Excessive exposure to vibration,
work in awkward positions, and
repetitive work motions can
cause injury to hands and arms.
Stop using any tool if discomfort,
numbness, tingling or pain occur,
and consult a physician.
4. When spraying and cleaning, always
follow the instructions and safety
precautions provided by the material
manufacturer (Refer to MSDS).
Do not spray
acids, corrosive
materials, toxic chemicals,
fertilizers or pesticides. Using these
materials could result in death or
serious injury.
5. Keep visitors away and NEVER allow
children or pets in the work area.
Never aim or
spray at yourself
or anyone else or serious injury
could occur.
6. Always work in a clean environment.
To avoid injury and damage to the
workpiece, do not aim the spray gun
at any dust or debris.
Do not use pressure that
exceeds the operating
pressure of any of the
parts (hoses, fittings, etc.) in the
painting system.
Keep hose away
from sharp
objects. Bursting air hoses may
cause injury. Examine air hoses
regularly and replace if damaged.
7. Always use a pressure regulator on
the air supply to the spray gun.
Failure to install
appropriate
water/oil removal equipment may
result in damage to machinery or
workpiece.
Introduction
The spray gun is a vital link in any
finishing application. In addition to
operating the spray gun properly,
techniques of surface preparation and
paint preparation must be understood.
These instructions will explain the
differences among various spray
technologies and serve as a guide in
the proper operation and techniques
of spray painting. Refer to the
Replacement Parts Manual for model
specific information.
SPRay GUn teRMS
atomization - Conversion of bulk
liquid to spray droplets (mist).
bleeder – In this mode, air passes
continuously through the gun whether
spraying or not. This mode is generally
used when the air is supplied by a
continuously running compressor that
does not have a tank.
bleeder/non-bleeder – Indicates
whether air flows through the gun
continuously or as the trigger is pulled.
external Mix – Process where the air
and paint are mixed just after leaving
the nozzle. This type of mix should be
used for fast drying paints and when a
high quality finish is needed.
Feed – Method used to bring paint into
the gun for spraying.
Fluid control Knob – Used to control
the amount of paint being mixed with
air.
Gravity Feed – Method of paint feed
similar to the siphon feed method.
However, the cup is inverted to create a
positive fluid pressure at the nozzle.
Internal Mix – Process where the air
and paint are mixed inside the air cap
just before being sprayed. This method
is best for heavy bodied, slow drying
paints and can only be used with the
pressure feed method. Do not use fast
2
drying paints with internal mix. The
paint will dry inside and quickly clog the
air cap.
Mix – The mixing of paint and air when
spraying.
non-bleeder – In this mode, air
flows only when the trigger is pulled.
This type of operation is used with a
compressor equipped with a tank or
with a large factory air system.
Paint tank – An auxiliary pressurized
paint reservoir that allows continuous
spraying of large amounts of paint
without stopping for refills as with a
canister. It also allows using the spray
gun at any angle without causing paint
to drip.
Pattern control Knob – Used to form
the proper pattern (size and shape) of
paint as it is sprayed from the gun to
the workpiece.
Pressure Feed – Method of paint
feed where a canister or paint tank is
pressurized to force paint to the gun.
Either internal or external mix air caps
are used with this method. Pressure
feed is generally used for spraying
heavy bodied paints or for large size
projects.
Siphon Feed – Method of paint feed
where atmospheric pressure creates a
partial vacuum to siphon paint to the
gun. Only external mix air caps are used
with this method. Siphon feed is used
with light bodied paints.
Viscosity – A measurement of the
resistance to the flow of liquids.
cOnVentIOnaL VS. HVLP
Conventional spray guns use a much
higher air cap pressure to atomize paint
than HVLP spray guns. This results in
more overspray and a lower transfer
efficiency.
HVLP, electrostatic and airless processes
are currently the only compliant spray
methods that meet the strict 65%
transfer efficiency criteria required by
some air quality management districts.
This enhanced transfer efficiency
results in a significant material savings
compared to conventional spraying.
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