Ransburg Evolver 303 Dual Purge Solvent Robotic Applicator A12374-XXX - Manual (Page 32)

When not spraying, it is recommended to set back
voltage to 30-40kV or off between target parts.
Sometimes, depending upon target carrier spac-
ing, higher setback voltages may be required. The
ramp-up time for the HP-404 cascade (0-100kV) is
approximately 3 seconds.
The MicroPak voltage ramp-down works at a rate of
33kV/sec.
Target Distance
The distance between the applicator tip and the
article being painted should be 10-14-inches (.25-
-.36m) for a single head applicator and at or near
the convergence point for a dual head applicator.
Excessive distance causes a waste of coating mate-
rial and wrap back (paint particles being deposited
on the applicator body or the robot arm). At close
distances the voltage at the tip of the applicator will
be reduced, which decreases the charging effect of
the applicator.
> If target distance is less than 8-inches (.20m),
an arc could occur.
W A R N I N G
!
27
Evolver 303 Dual Purge Robotic Atomizers - Operation
> If a 0kV command is sent to the MicroPak,
a feedback fault will occur.
NOTE
Electrostatic Voltage
Under no load conditions, the maximum voltage
limit for these spray applicatorss is 100kV. Some
painting operations may require different voltage
settings to obtain optimum transfer efficiencies. If
Faraday cage areas are predominant on the item
being painted, a lower voltage setting would aid in
coating these areas.
> If a bell applicator is being used, and needs
to be switched to a spray applicator, the bell
applicator must have all voltage, fluids, and air
turned off, and the bell cup completely spun-
down before the change-out can occur.
W A R N I N G
!
AA-08-01.1