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3.1 INTRODUCTION
The Spraying Systems Co. ES2500 is an Electrostatic System that utilizes a low flow rate and negatively charged fluid to produce
electrostatic spraying. The system
’
s purpose is to deliver a controlled spray with a very high transfer efficiency. System applica-
tions include spraying various oils and other coating or lubricating fluids onto neutrally charged and grounded metallic targets.
In electrostatic spraying, a negative charge is introduced into a fluid in the nozzle body using direct contact charging. When this
charge is applied, it causes the fluid to also acquire a negative charge. This causes the fluid molecules to repel each other, follow-
ing the principle that like charged molecules will repel and opposite charged molecules will attract. This applied negative charge
also causes the fluid to be over the Rayleigh limit, which means it will form into droplets as it exits the nozzle orifice.
After leaving the nozzle orifice, the newly formed droplets continue to repel each other—causing the already small droplets to
split evenly into even smaller droplets. This process will continue until the repulsive force between fluid molecules is no longer
strong enough to break the surface tension and split the droplet again.
The tiny and uniformly sized droplets retain their negative charges, and will be attracted to any neutral, grounded target nearby
with an attractive force stronger than gravity. Electrostatic forces pull the fluid droplets towards this target, thinly and evenly
coating the target surface. The average final drop diameter produced by the Electrostatic Manifold is less than 10 microns.
3.2 PRODUCT FEATURES AND SPECIFICATIONS
The ES2500 Electrostatic Spray System consists of three main component groups:
•
System Control Panel
•
Fluid Delivery Cart
•
Electrostatic Manifold
This manual contains general specifications and information for the ES2500 Electrostatic Manifold System. This includes product
overviews, installation, operation, maintenance, and troubleshooting information.
SYSTEM USAGE
•
The ES2500 is designed to run continuously and provide electrostatic fluid application with high transfer efficiency
•
Intended uses include spraying a lubrication oil or a release agent onto a specific metallic target .
•
The ES2500 system control panel features a
10”
touchscreen HMI
o
Operators can control fluid flow rate and applied voltage
o
System software has been customized for electrostatic spraying, including specific faults and alarms
•
The system features two strainer valve assemblies, which allows one strainer to be accessible for cleaning
during
system
operation. This limits system downtime for maintenance and allows for continuous system use.
3.3 ENCODER KIT (OPTIONAL)
This system can be programmed to use an encoder and control the system with units of distance instead of timing.
Speed/Encoder settings require a connected line speed encoder. There are two encoders that Spraying Systems Co.
offers, but the customer can also supply their own.
ENCODER SELECTION
The hollow shaft encoder will mount in the conveyor, while the wheel and pivot
stye encoder requires the wheel to rest on the conveyor surfaces to measure the
line speed.
SECTION 3
SYSTEM OVERVIEW
M12 (f) x 4 pole M12 (f) cable 5m
(Included in both kits)
