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

THE RANSBURG
ELECTROSTATIC
PROCESS
This process is a method for electrostatically applying
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 electrostati-
cally 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 overspray around and deposit it
on the back surface of the target. Therefore, a higher
percentage of the spray is deposited.
INTRODUCTION
7
Evolver Solventborne Robotic Atomizers - 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 hydrocarbon solvents.
The robot manifold incorporates stainless steel fluid
connections.
The high voltage cascade is entirely encapsulated
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
60 ° 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, providing 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
AA-03-02.11