Ransburg Evolver 303 Dual Purge Solvent Robotic Applicator A12374-XXX - Manual (Page 30)

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Evolver 303 Dual Purge Robotic Atomizers - Operation
OPERATION
As with any spray finishing system, operation of the
Evolver 303 dual purge involves properly setting
the operating parameters to obtain the best finish
quality for the coating material being sprayed, while
maintaining correct operation and reliability of the
equipment used. Adjustments to operating param-
eters, which cover spraying, cleaning, and on/off
control, include the following:
• Coating Materials
• Fluid Flow Rate Control
• Fluid Valve / Trigger Control
• Atomization Air
(Paint Atomization Control)
• Fan Air (Pattern Control)
• Electrostatic Voltage
• Target Distance
SPRAY APPLICATOR CONTROLS
Atomization Air (SAI/AA) / Fan Air
(SAO/F.A)
The atomization and fan air are turned on by the
trigger line and are controlled by an internal air valve
located in the applicator head. During normal op-
eration with applicator triggered off, there is a slight
bleed of air through the atomization port.
Atomizing Air
Adjustments are made through the robot PLC or a
manually adjustable air regulator. The lowest air
pressure required to break up the paint should be
used. Lower atomizing air pressures result in less
overspray and increased transfer efficiency.
Fan Air
Adjusting the fan air increases or decreases the size
of the spray pattern. Increasing pressure increases
pattern size. Pattern adjustment should be made to
suit the size and shape of the object being painted.
This adjustment is made through the robot PLC or a
manually adjustable air regulator.
Air cap atomization and fan pressures should be set
and recorded using an air cap test kit. This provides
a consistent measurement, so initial settings may
be duplicated at any time. (See "Accessories" in the
"Parts Identification" section.)
HVLP SPRAY
The Evolver 303 dual purge HVLP models, when
properly set-up, are designed to provide maximum
transfer efficiency by limiting air cap pressures to 10
psi (0.7 bar) (in the U.S., this complies with rules issued
by SCAQMD and other air quality authorities). Air
cap pressures should be measured with an optional
air cap test kit. (See "Accessories" in the "Parts Iden-
tification" section.)
> Electrical discharge of a high electrical ca-
pacitance fluid/paint system can cause fire or
explosion with some materials. If arcing occurs
when a specific coating material is used, turn the
system off and verify that the fluid is non-flam-
mable. In these conditions, the system is capable
of releasing sufficient electrical and thermal
energy to cause ignition of specific hazardous
materials in the air.
W A R N I N G
!
> Operators must be fully trained in safe opera-
tion of electrostatic equipment. Operators must
read all instructions and safety precautions prior
to using this equipment (see NFPA-33).
W A R N I N G
!
AA-08-01.1