Model 3710 Plasma Control Console
Operator’s
Manual
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Issued: 03/11
Page 23
B. Recommended Gas Purity
Arc gas purity is important to optimum electrode life and system
operation. Generally, commercial-grade gases are recommended for most
applications.
C. Gas Pressure Regulator Requirements
Use three dual stage (N.C.G. Series 6500, or equivalent) regulators: one
for arc gas, one for powder gas, and one for auxiliary gas. Outlet working
pressure must not exceed 300 psig (2068 kPa). Inlet fitting must be
compatible with the gas cylinder. The outlet of each gas pressure regulator
must be standard male oxygen (9/16-18 thread) to be compatible with gas
hoses supplied with this system.
2.2
Description
The Model 3710 Control Console represents the latest offering in our
successful line of compact controllers. The 3710 is CE compliant with
added features including two powder feeder control (one at a time, for top
coat- bond coat applications), and an auxiliary power circuit that can be
used for actuating part cooling, etc. Like its predecessor, the 3710 is an
economically priced plasma spray process controller designed for
production environments. Easy to understand controls coupled with a
compact cabinet design make the 3710 an ideal control console for any
plasma spray application.
The console features critical orifice gas control. Jeweled critical orifices
used in the 3710 offer extremely accurate gas control. Critical orifices are
relatively insensitive to back pressures, unlike similar gas measuring
devices such as rotometers. Consistent and repeatable parameters ensure
coating repeatability and quality, day after day.
The console features safety interlocks, preventing gun operation in case of
failure of the cooling water, power, and/or gas pressure circuit. The
console incorporates NFPA Type “Z” purging and audio/visual alarm that
warns the operator in case of purging malfunction. Solid-state power
control permits selection of the operating current before ignition of the
gun and maintains current setting within 1% of setpoint.
