Ransburg Aerobell 168 Atex Approved 13350 - Manual (Page 41)

FLUID FLOW RATE
CONTROL
Externally mounted fluid regulators or gear pumps
are typically used to control fluid flow.
The atomizer assembly is equipped with valves
which are pneumatically operated to direct the
flow of paint to either the feed tube or dump line
Fluid Flow Rate Check
In the test mode , the flow rate can be measured
by removing the bell cup from the atomizer, turning
the fluid flow on, and capturing the material in a
graduated beaker or measuring cup for a fixed
period of time (shaping air, high voltage, and
turbine air must be off).
TARGET DISTANCE
The distance from the Aerobell 168 atomizer to
target affects the spray application. For instance,
closer distances give a smaller spray pattern and
greater efficiency. Increasing the distance will give
a larger pattern and possibly reduce efficiency.
If the distance is too great, material may “wrap
back” on the Aerobell 168. The safe distance for
the Aerobell 168 is 204mm or 8”. All ground ob-
jects must be prevented from entering this area.
SHAPING AIRS
Shaping air is used to shape the spray pattern.
The lower the pressure, the wider the pattern, and
conversely, higher pressures result in narrower
patterns. Shaping air does not help atomize the
material, but does assist in the penetration of
atomized particles into cavity areas. Shaping
air should be kept at a minimum consistent with
coating requirements. Excessive shaping air will
cause some atomized particles to blow by the
target not allowing full “wrap,” or paint particles
to bounce back onto the atomizer.
Note: When Mono Flex shape air configuration
is used, one of the inputs on the atomizer body
will be required to be plugged. Either input can
be used for Mono Flex (SAI or SAO).
Dual Flex Shaping Air Configuration
Both inputs are required. Pattern adjustment:
Increasing the inner air will make the pattern
smaller. Increasing the outer air will make the
pattern larger.
W A R N I N G
!
† Danger of shock and/or personal injury
can occur. Proper ground procedures must
be followed. Personnel must never work
around the turbine when the turbine is spin-
ning or when high voltage is turned on.
W A R N I N G
!
† The safe distance of use for type AB168
Electrostatic Bell is 204mm from the bell
cup to earthed parts. The end user must
ensure this distance, as a minimum is main-
tained and that grounded objects are pre-
vented from contacting the applicator bell
cup when the applicator is energized or op-
erating.
Aerobell 168 - Operation
Ransburg
LN-9247-13 38