Ransburg RMA Indirect A11600 - Manual (Page 36)

As with any spray finishing system, operation of
the RMA-303 involves properly setting the oper-
ating parameters to obtain the best finish quality
for the coating material being sprayed, while
maintaining correct operation and reliability of
the equipment used. Adjustments to operating
parameters, which cover spraying, cleaning, and
on/off control, include:
!
Coating Materials
! Fluid Flow Rate Control
! Fluid Valve Control
! Turbine Speed
! Bearing Air Adjustment
! Shaping Air #1 (Pattern Control)
! Shaping Air #2 (Pattern Control)
! Brake Air
! Electrostatic Voltage
! Target Distance
OPERATION
FLUID FLOW RATE
CONTROL
Externally mounted fluid regulators or gear pumps
are typically used to control fluid flow. Paint is
supplied to the RMA-303 by way of the tubing
bundle through the robot arm.
The atomizer assembly is equipped with micro
valves which are pneumatically operated to direct
the flow of paint to either the feed tube or dump
line and to supply an intermittent solvent to clean
the interior and exterior of the bell cup.
The feed tube has several sized removeable tips
available from .7mm to 1.6mm (.027-inch - .062-
inch). The viscosity and volume of the coating
material being sprayed determine the correct size
of feed tube tip for each installation. (Reference
"Fluid Tip Flow Rate" chart in the "Introduction"
section.)
Fluid Flow Rate Check
In the test mode, the flow rate can be measured
by removing the bell cup from the atomizer, turning
the fluid flow on, and capturing the material in a
graduated beaker or measuring cup for a fixed
period of time (shaping air, high voltage, and
turbine air must be off).
> Danger of shock and/or personal injury
can occur. Proper grounding procedures
must be followed. Personnel must never
work around the turbine when the turbine is
spinning or when high voltage is turned on.
W A R N I N G
!
> Electrical discharge of a high electrical
capacitance fluid/paint system can cause fire
or explosion with some materials. If arcing
occurs when a specific coating material is
used, turn the system off and verify that the
fluid is non-flammable. In these conditions
the system is capable of releasing sufficient
electrical and thermal energy to cause igni-
tion of specific hazardous materials in air.
W A R N I N G
!
> Operators must be fully trained in safe
operation of electrostatic equipment. Oper-
ators must read all instructions and safety
precautions prior to using this equipment
(see NFPA-33).
W A R N I N G
!
RMA-303 Indirect Charge - Operation
Ransburg
32 LN-9252-06.4