Ransburg RMA Indirect A12869 - Manual (Page 14)

RMA-303 Indirect Charge - Introduction
9 LN-9268-11.4
GENERAL DESCRIPTION
Bell Cup Assembly
All bell cups are made of high strength Titani-
um. They are available in 65mm serrated,
non-serrated for base coat, primer, and clear
coat applications.
Air Bearing Turbine Assembly
The air bearing turbine assembly with bell cup
is mounted to the air manifold assembly with a
turbine retaining ring.
Air Manifold Assembly
The atomizer extension is angled at 60° for
robot applications. The fluid feed tube and
fiber optic turbine speed emitter are threaded
into the front of the manifold. The turbine, flu-
id, and air manifolds are separated from the
bell plate assembly by the atomizer extension.
Bell Plate Assembly
The bell plate assembly is designed to be at
ground potential when mounted to the robot
plate component within the tubing bundle as-
sembly. The air and fluid ports are compactly
oriented for use in robotic applications. The
interior air supplies are ported through the col-
or coded tubing directly to the air manifold as-
sembly. On the exterior side of the bell plate,
the ports are provided with O-ring seals so
that the atomizer can be quickly mated and
secured to the robot plate.
Robot Plate
The robot plate is a component of the tubing
bundle assembly and intended to be perma-
nently mounted to the robot. A wrist adapter
is also available, which matches the robot's
mounting configuration. The incoming air
lines, fluid lines, and fiber optic cable are con-
nected to the fittings provided on the back of
the robot plate. The bell plate of the atomizer
assembly is secured to the robot plate with a
threaded retaining ring.
Break-Away Feature (Optional)
The RMA-303 can be converted to have a
break-away feature. By replacing the six (6)
stainless steel screws with six (6) special de-
signed plastic screws (77524-00). This feature
minimizes the damage to the atomizer, robot,
etc. If a collision occurs, the six (6) plastic
break-away screws fail and the atomizer will
break free. This will leave the break-away ring
and the mounting ring attached to the robot.
(The applicator will fall to the booth grate or
floor.)
Power Supply and Controls
The high voltage cascade (74793-XX) is locat-
ed outside the RMA-303 and is controlled by
the MicroPak control unit. The low voltage
output of the MicroPak is multiplied by the cas-
cade to the high voltage level required. The
high voltage is supplied to the atomizer by a
high voltage cable (A10560-XX). A low volt-
age cable interconnects the cascade and Mi-
croPak control. The MicroPak format is de-
signed to fit in a conventional 19-inch or 10-
inch rack and requires a 28 V power input at a
maximum 6 amps.
The MicroPak is designed to electronically limit
current to provide safe operation in a spray
booth. The voltage and current draw of the
atomizer are continuously displayed on the
MicroPak control panel. Voltage and overcur-
rent limits are adjustable on the front of the
MicroPak. MicroPak internal safety circuits will
shut down the system on over-current and ca-
ble faults.
With additional control modules, all of the func-
tions of RMA-303 and MicroPak can be con-
trolled by a programmable controller. A Serial