Operation; Safe Operation; The Right Technique - Ransburg Vector AA90 Cascade Service Manual

OPERATION

SAFE OPERATION

• Ground all operators by requiring that they hold
the applicator handle with a bare hand.
• Ground operators and all other persons in spray
areas by requiring that they wear conductive
soled shoes or grounding straps.
• Have exhaust fans operating while spraying.
• Exhaust fans must be interlocked with the
control unit or Aviator.
• See that no more than one gallon of solvent
per safety container per operator is inside of
the hazard location.
• If ANY symptom of improper operation occurs,
suspend use of the unit until the problem has
been diagnosed and corrected. See "Trou-
bleshooting Guide" or contact your authorized
Ransburg representative.
• Ground MUST be maintained during the addition
of fluid to any supply container! Whenever
transferring flammable fluid from one container
to another, both containers MUST be properly
connected to a proven ground first and then
to each other. Personnel executing such a
transfer MUST also be grounded.
• A chemical reaction, resulting in the possibil-
ity of a pressure EXPLOSION, may occur if
1, 1, 1-Trichloroethane, Methylene Chloride,
or other Halogenated Hydrocarbon Solvents
are used in PRESSURIZABLE FLUID SYS-
TEMS having ALUMINUM or GALVANIZED
WETTED PARTS. Such an explosion could
cause DEATH, serious BODILY INJURY and/
or substantial property damage. Consult your
fluid supplier to determine the chemical content
of your solvents. (See "HHC Explosion Hazard
Danger Sign" and "Halogenated Hydrocarbon
Safety Bulletin".)
AH-07-01.10
Vector AA90 Applicators - Operation
• Never flush the applicator with solvent while
electrostatics are on. Failure to turn off electro-
statics while flushing may cause an IGNITION
HAZARD.

THE RIGHT TECHNIQUE

Following are some basic electrostatic spray tech-
niques. Depending on the spray target, it may be
necessary to adjust the technique.
Spray Width Determination
The size of the object being coated is the deter-
mining factor in adjusting the spray pattern. The
larger the object, the larger the required pattern
width. This is accomplished by fluid nozzle se-
lection. Air adjustment is used to remove "tails"
from the spray pattern and adjust the pattern size.
NOTE
† The degree of atomization is depen-
dent on the viscosity of the paint formula-
tion, the applied fluid pressure, and nozzle
selection.
Applicator to Target Distance
The distance between the applicator and the tar-
get influences the appearance of the final finish
of the object. If the applicator is held too close,
under 100mm (approximately 4-inches), runs and
sags with excessive "bounce-back" may occur. If
the applicator is held too far from the object, the
electrostatic attraction is decreased. Normally,
the best spacing between applicator and target is
in the 150mm to 300mm area (6-inch to 12-inch).
24