Speedaire 2Z366H Manual De Instrucciones página 2

Speedaire Operating Instructions
Speedaire
Spray Guns
General Safety Information
(continued)
• Do not spray acids, corrosive
materials, toxic chemicals, fertilizers
or pesticides. Using these materials
could result in death or serious
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injury.
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• When spraying and cleaning, always
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follow the instructions and safety
I
precautions provided by the material
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manufacturer (Refer to MSDS).
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• Do not overreach. Keep
proper footing and
balance at all times.
Proper footing and
balance enables better
control of the spray gun in
unexpected situations.
• Stay alert. Watch what you are doing
and use common sense when
operating the spray gun. Do not use
the spray gun while tired or under the
influence of drugs, alcohol, or
medication. A moment of inattention
while operating the spray gun
increases the risk of injury to persons.
TOOL USE AND CARE
• Do not use pressure that
exceeds operating
pressure of the spray
gun or any of the parts
(hoses, fittings, etc.) in
the painting system.
• Over pressurizing the spray gun is
able to result in bursting, abnormal
operation, breakage of the spray gun
or serious injury to persons.
• Always verify prior to using the spray
gun that the air source has been
adjusted to the rated air pressure or
within the rated air-pressure range.
• Check for misalignment or binding of
moving parts, breakage of parts, and
any other condition that affects the
spray gun's operation. If damaged, have
the spray gun serviced before using.
Many accidents are caused by poorly
maintained spray guns. There is a risk of
bursting if the spray gun is damaged.
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Siphon Feed - Conventional
• Avoid unintentional starting. Be sure
the trigger is off before connecting to
the air supply. Do not carry the spray
gun with your finger on the trigger or
connect the spray gun to the air
supply with the trigger on.
• Disconnect the spray gun from the air
source before, changing accessories,
cleaning, servicing or storing the
spray gun. Such preventive safety
measures reduce the risk of starting
the spray gun unintentionally.
• Failure to install appropriate water/oil
removal equipment may result in
damage to machinery or workpiece.
• Always use a pressure regulator on
the air supply to the spray gun.
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.
2Z366H, 4XP62B, 4XP63B and 4RR06B
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 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.
Spray Gun Set-Up
The pressure for atomization is
controlled by the regulator on the air
source. The amount of fluid is adjusted
by the fluid control knob, the paint
viscosity, and the air pressure (See
Figure 1). The siphon cup must be
vented to the atmosphere.
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