Ransburg RMA Indirect A11600 - Manual (Page 39)

Figure 8: A12089-11 Shaping Air Kit
(Dual Flex Shape Air)
BRAKE AIR
Brake air is used to slow the turbine speed in a
minimum length of time. It is advantageous for
short cycle times during color change, or may be
used to reduce speed or stop the turbine. Never
operate brake air with the turbine air on.
Approximate brake times to reduce the turbine
speed are shown in "Deceleration Time Chart" in
the "Introduction" section. These times are based
on 60 psi (413.7 kPa) and 100 psi (689 kPa) air
pressure at the back of applicator.
ELECTROSTATIC
VOLTAGE
The RMA-303 Indirect Applicator receives its
high voltage via high voltage cable A10560-XX.
The voltage is then passed through eight (8) total
resistors located in the A11343-XX electrode as-
semblies mounted on the A12079-00 high voltage
ring. An ionized field is established between the
probe tips and the electrically grounded bell cup
as well as the electrically grounded workpiece.
Refer to the current MicroPak service manual for
detailed operating instructions, safety cautions,
and settings.
SHAPING AIR #2
(Cut-In Control Air)
A12089-11 Shaping Air Kit (Dual
Flex Air) 65mm Bell Cups Only
As the name implies, both shaping air outlets
supply air that is counter to the rotation of the bell
cup. This combination will provide a pattern size
from 3" - 10" (76mm - 254mm) depending on bell
rotation speed, fluid flow, and air flow. Each set
of shaping air holes are independently controlled.
The inner set of holes are supplied by connecting
the "blue" tube labeled "SAI" on the tubing bun-
dle to a regulated air source. The outer set of
shaping air holes are supplied by connecting the
"gray" tube labeled "SAO" on the tubing bundle
to a regulated source. The air supplies work in
combination with each other to provide desired
results. This combination of shaping air can be
used with any 65mm bell cup.
NOTE
> If paint defects occur, such as fatty edges
or picture framing, reducing the voltage
should be a last resort. To correct the
problem, lead and lag trigger adjustments
should be optimized first.
> The electrostatic voltage applied to the
RMA-303 will affect pattern size, transfer
efficiency, wrap and penetration into cavity
areas. A setting of 30-70 kV is appropriate
for most applications.
RMA-303 Indirect Charge - Operation
Ransburg
35 LN-9252-06.4