Ransburg Evolver Solvent Robot Applicator 79190-XXXXXXXX - Manual (Page 12)

THE RANSBURG
ELECTROSTATIC
PROCESS
This process is a method for electrostatically apply-
ing coatings to objects. A power supply produces
a high voltage charge which is supplied to the
applicator, creating an electrostatic field between
the applicator and the target object. The target
is electrostatically grounded through its support
which may be either stationary or moving.
A regulated fluid system delivers coating material
to the applicator, where it is atomized forming
a spray mist. There, under the influence of the
electrostatic field, the atomized coating becomes
electrostatically charged. The charged particles
are attracted to and deposited on the grounded
target object. The forces between the charged
particles and the target are sufficient to turn over-
spray around and deposit it on the back surface
of the target. Therefore, a higher percentage of
the spray is deposited.
INTRODUCTION
79190-X0XXXXXX 60° Single Head
79190-X1XXXXXX 90° Single Head
Two dual-head versions of the Evolver Gun are
also available (see Figure 1). The dual headed
guns are primarily used where high volume fluid
delivery is required. The dual headed gun is
available in two different configurations as follows:
79190-X2XXXXXX 60° Dual Head
79190-X3XXXXXX 90° Dual Head
The Evolver Spray Gun System consists of four
major components:
1. Quick-Disconnect Spray Head
2. Gun Head Mounting Block Assembly
3. Valve Manifold Assembly (Includes the
High Voltage Cascade with a Quick-Discon-
nect Ring)
4. Rear Tubing Manifold Assembly (Both
English and Metric)
The spray head(s) and valve manifold contain
the fluid, air, and high voltage passages. All fluid
passages contain stainless steel and/or nylon
fittings, compatible with halogenated hydrocar-
bon solvents. The robot manifold incorporates
stainless steel fluid connections.
The high voltage cascade is entirely encapsulat-
ed with a solvent resistant epoxy. This cascade
generates voltages up to 100 kV fed by a low
voltage cable.
There are two sources for the high voltage supply
to the Evolver guns:
• Stand-alone control/power supply unit
(A10406)
• MicroPak TM control unit (LECU5004-31)
EVOLVER
SOLVENTBORNE GUNS
The Evolver TM Solventborne Gun Line consists
of both 600° and 90° single and dual-headed 100
kV automatic electrostatic spray guns. Developed
for use on robots, the Evolver gun incorporates a
unique 1/3 turn quick-disconnect spray head and
a two piece snap together manifold cover, provid-
ing the user an efficient tool for the electrostatic
application of coatings.
The Evolver gun also has the ability to color change
while spraying with no voltage draw down, a true
dual purge function.
There are two single head models of the Evolver
Gun (see Figure 1). Each model differs in the
gun to axis orientation of the spray head. These
models are:
>
The Evolver Gun assemblies are NOT
FM approved when used with any other
power source.
NOTE
Evolver Solventborne Robotic Atomizers - Introduction
8
Ransburg
AA-03-02.12