Ransburg Evolver 303 Solvent Applicator A11976-XXX - Manual (Page 30)

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.
Target Distance
The distance between the applicator tip and the
article being painted should be 10-14 inches
(.25m-.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 material 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
!
Figure 9: Single Purge Air and Fluid Passage
Schematic
>
If a 0 kV command is sent to the Mi-
croPak, a feedback fault will occur.
NOTE
Electrostatic Voltage
Under no load conditions, the maximum voltage
limit for these spray applicatorss 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.
>
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
!
To
P
ai
nt
W
as
te
T
an
k D
um
p V
al
ve
Pa
in
t V
al
ve
Cu
p W
as
h
So
lv
en
t V
alv
e (
Plu
gg
ed
)
Solv
ent
I
n
Pa
in
t S
up
pl
y
Fl
ui
d T
ub
e
to
Ap
pl
ic
at
or H
ea
d
27
Evolver 303 Robotic Atomizers - Operation
Ransburg
AA-07-03.2