Ransburg Evolver 303 Solvent Applicator A11976-XXX - Manual (Page 28)

OPERATION
As with any spray finishing system, operation
of the Evolver 303 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
parameters, 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
operation 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 HVLP models, when properly
set-up, are designed to provide maximum trans-
fer 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 authori-
ties). Air cap pressures should be measured with
an optional air cap test kit. (See "Accessories" in
the "Parts Identification" section.)
>
Operators must be fully trained in safe
operation of electrostatic equipment. Oper-
ators must read all instructions and safety
precautions prior to using this equipment
(see NFPA-33).
W A R N I N G
!
>
Electrical discharge of a high electrical
capacitance 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-flammable. In these conditions,
the system is capable of releasing sufficient
electrical and thermal energy to cause igni-
tion of specific hazardous materials in the air.
W A R N I N G
!
25
Evolver 303 Robotic Atomizers - Operation
Ransburg
AA-07-03.2