Ransburg Evolver Water Applicator 78863-90, 78863-60 - Manual (Page 20)

16
Robot Waterbase Applicator - Operation
OPERATION
Dump Pilot (DP)
When the target part is finished and a color change
is desired, insure voltage is turned Off.
SPRAY GUN CONTROLS
Atom (A) / Fan Air (F)
The RWA-EFM gun fluid On/Off is controlled by a
trigger line where a signal comes from either the
robot or a PLC. This signal must be a minimum of
70 psig. The atomization and fan air are always on
and should be controlled by the solenoid valves
either at the robot arm or as close as possible to
the gun.
Air cap pressures should be set using air cap test
kit. This provides a consistent measurement, so
initial settings may be duplicated at any time. (See
"Parts Identification" section for air cap test kit part
numbers.)
Air Purge (AP)
After the dump line has been properly cleaned and
blown down, turn the air purge (AP) line on. This air
flow should remain on during the spray cycle. Re-
comended air pressure for air purge (AP) is 45 psig.
This may be adjusted up or down, depending upon
performance.
Paint Viscosity
This applicator is capable of atomizing paint of most
any desired viscosity. It is recomended to keep the
material viscosity as low as possible. This allows
spraying at lower fan and atomization air pressures
which results in less overspray and higher transfer
efficiency.
> Insure that the fan and atomization air
are on and flowing prior to triggering the
fluid. Failure to follow this sequence will
cause spits and defects on the part being
painted.
NOTE
> Failure to turn voltage OFF during color
change sequence could cause a fire or explo-
sion.
> Never apply voltage to robotic spray gun
system when not in use. When electrostatically
spraying a waterborne material, the entire paint
column, from the spray gun to the fluid tank or
pump system, is charged at high voltage. In-
sure proper protection from voltage discharge.
Not providing protection may cause damage
to equipment, serious injury to personnel, or
death.
W A R N I N G
!
> Failure to properly clean and blow down the
walls of the dump line tube may cause a voltage
drain when spraying the target. This voltage
drain will cause a lower voltage at the gun tip,
lowering transfer efficiency, possibly causing
paint defects.
C A U T I O N
!
W A R N I N G
!
Actuate the dump pilot (DP) signal and properly clean
the line using an appropriate solvent for the material
being sprayed.
When the cleaning cycle with solvent is complete, an
air purge for several seconds is recomended to clean
and dry the I.D. of the dump line hose.
AA-03-01.1