Ransburg Evolver Solvent Robot Applicator 79190-XXXXXXXX - Manual (Page 27)

Electrostatic Voltage
Under no load conditions, the maximum volt-
age limit for these spray guns is 100 kV. 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.
When not spraying, it is recommended to set back
voltage to 30-40 kV 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 (0-100 kV)
is approximately 3 seconds.
The MicroPak voltage ramp-down works at a rate
of 33 kV/sec.
>
If target distance is less than 8 inches,
an arc could occur.
W A R N I N G
!
>
If a 0 kV command is sent to the Micro-
Pak, a feedback fault will occur.
NOTE
Target Distance
The distance between the gun tip and the article
being painted should be 10-14 inches. Excessive
distance causes a waste of coating material and
wrap back (paint particles being deposited on the
gun body or the robot arm). At close distances
the voltage at the tip of the gun will be reduced,
which decreases the charging effect of the gun.
NOTES
Evolver Solventborne Robotic Atomizers - Operation
23
Ransburg
AA-03-02.12