Ransburg Vector R Series Classic 79520 R90 Waterborne - Manual (Page 17)

Vector R Series Classic Applicators - Introduction
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Ransburg
AH-06-02.12
GENERAL DESCRIPTION
The Vector TM R90/70 Spray Applicator process
is an air-atomized method for electrosta-tically
applying product coatings. The Vector R90/70
applicator system applies a high voltage DC
charge to the applicator electrode, creating an
electrostatic field between the atomizer and the
target object.
The Vector™ R90 Classic Spray Applicator
(see Figures 1 and 2) applies a -90 kV DC charge
to the coating materials at the point of atomization.
The Vector™ R70 Classic Spray Applicator
(see Figure 1) applies a -65 kV charge. This
electrostatic charge allows a more efficient, uni-
form application of coating material to the front,
edges, sides, and back of products. It is highly
suitable for applying coatings to a variety of sur-
face configurations: large targets, small parts,
tubular wares, concave and recessed parts, etc.
Because it is a grounded fluid system (for solvent
based systems), it is highly suitable for applying a
wide range of solvent reduced coatings such as
enamels, lacquers, epoxies, etc. The 79520 model
is available to accomodate waterborne materials.
A regulated pressure fluid system delivers coating
material to the atomizer. At the time of triggering
the applicator, fan and atomization air is introduced,
which atomizes the coating material into a spray
mist. The atomized spray particles under the influ-
ence of the electrostatic field become electrically
charged. The charged particles are attracted to,
and deposited on, the target object. The forces
between the charged particles and the grounded
target are sufficient to turn most normal overspray
around and deposit it on the back surface of the
target. Therefore, a high percentage of the coating
is deposited on the target.
INTRODUCTION
One of the many features of the Vector R90/70
applicator system is that the electrical energy,
which is available from the resistive charging
electrode, is limited to the optimum level of safety
and efficiency. The system is incapable of releas-
ing sufficient electrical or thermal energy during
normal operating conditions to cause ignition of
specific hazardous materials in their most easily
ignited concentrations in air.
The power supply provides voltage output to the
applicator and contains controls for AC on/off,
high voltage adjust, "one touch" triple setpoint,
and displays kV and µA in real time.
As the applicator electrode approaches ground,
the power supply and applicator circuitry cause
the high voltage to approach zero while the current
approaches its maximum value.
† When more than one waterborne appli-
cator is fed from a common isolated fluid
supply, there is a potential for electrical ener-
gy discharge through any other applicators
when one applicator is triggered. Depend-
ing upon the system capacity, this discharge
could be hazardous. Install only one spray
applicator per isolated fluid supply system.
W A R N I N G !