Ransburg REA User manual

TECHNICAL MANUAL
IL-246-BIL-246-B
IL-246-BIL-246-B
IL-246-B
(Replaces IL-246-A)
January - 2008
IMPORIMPOR
IMPORIMPOR
IMPORTT
TT
TANTANT
ANTANT
ANT: Before using this equipment,: Before using this equipment,
: Before using this equipment,: Before using this equipment,
: Before using this equipment,
carefully read SAFETY PRECAUTIONS,carefully read SAFETY PRECAUTIONS,
carefully read SAFETY PRECAUTIONS,carefully read SAFETY PRECAUTIONS,
carefully read SAFETY PRECAUTIONS,
starting on page 1, and all instructions instarting on page 1, and all instructions in
starting on page 1, and all instructions instarting on page 1, and all instructions in
starting on page 1, and all instructions in
this manual. Keep this Tthis manual. Keep this T
this manual. Keep this Tthis manual. Keep this T
this manual. Keep this Technical Manualechnical Manual
echnical Manualechnical Manual
echnical Manual
for future reference.for future reference.
for future reference.for future reference.
for future reference.
ITW RANSBURGITW RANSBURG
ITW RANSBURGITW RANSBURG
ITW RANSBURG
REA™ AND VECTREA™ AND VECT
REA™ AND VECTREA™ AND VECT
REA™ AND VECTOR™OR™
OR™OR™
OR™
APPLICAAPPLICA
APPLICAAPPLICA
APPLICATT
TT
TORSORS
ORSORS
ORS
ELECTROSTELECTROST
ELECTROSTELECTROST
ELECTROSTAA
AA
ATICTIC
TICTIC
TIC
SPRASPRA
SPRASPRA
SPRAYY
YY
Y
TECHNIQUESTECHNIQUES
TECHNIQUESTECHNIQUES
TECHNIQUES
TT
TT
Technical Manual Price:echnical Manual Price:
echnical Manual Price:echnical Manual Price:
echnical Manual Price: €15.00 Euro)15.00 Euro)
15.00 Euro)15.00 Euro)
15.00 Euro)
$20.00 (U.S.)$20.00 (U.S.)
$20.00 (U.S.)$20.00 (U.S.)
$20.00 (U.S.)

IL-246-B
NOTE:NOTE:
NOTE:NOTE:
NOTE: This manual has been changed from IL-246-AIL-246-A
IL-246-AIL-246-A
IL-246-A to revision IL-246-B.IL-246-B.
IL-246-B.IL-246-B.
IL-246-B. Reasons for this
change are noted under “Manual Change Summary” inside the back cover of this manual.

IL-246-B
REA AND VECTOR APPLICATOR SPRAY TECHNIQUES:REA AND VECTOR APPLICATOR SPRAY TECHNIQUES:
REA AND VECTOR APPLICATOR SPRAY TECHNIQUES:REA AND VECTOR APPLICATOR SPRAY TECHNIQUES:
REA AND VECTOR APPLICATOR SPRAY TECHNIQUES:
USE THE RIGHT TECHNIQUE.................................................................................................
FAN CONTROL..........................................................................................................................
PATTERN....................................................................................................................................
FLAT SURFACES.......................................................................................................................
HORIZONTAL PASSES.............................................................................................................
VERTICAL PASSES...................................................................................................................
APPLICATOR TO TARGET DISTANCE...................................................................................
OVERLAP....................................................................................................................................
TRIGGERING.............................................................................................................................
LARGE OBJECTS......................................................................................................................
TUBULAR WORK.......................................................................................................................
RECESSED AREAS...................................................................................................................
SUMMARY..................................................................................................................................
SAFETY REQUIREMENTS........................................................................................................
PAGEPAGE
PAGEPAGE
PAGE
CONTENTSCONTENTS
CONTENTSCONTENTS
CONTENTS
1-111-11
1-111-11
1-11
1
2
2
3
3
3
4
5
5
6
7
8
9-10
11
REA/Vector Applicators Spray Techniques

IL-246-B
REA/Vector Applicators Spray Techniques
Before operating, maintaining, or servicing any ITW Ransburg electrostatic coating system, read and
understand all of the technical and safety literature provided with ITW Ransburg products. If you do not
have the manuals and safety literature for your ITW Ransburg system, contact your ITW Ransburg
representative.
11
11
1
USE THE RIGHT TECHNIQUESUSE THE RIGHT TECHNIQUES
USE THE RIGHT TECHNIQUESUSE THE RIGHT TECHNIQUES
USE THE RIGHT TECHNIQUES
REA/VREA/V
REA/VREA/V
REA/Vector (Electrostatic) Applicatorsector (Electrostatic) Applicators
ector (Electrostatic) Applicatorsector (Electrostatic) Applicators
ector (Electrostatic) Applicators
Savings of 25% to 50% in paint is possible when you replace conventional air spray with ITW Ransburg
Electrostatic Applicators. You finish curved and recessed surfaces uniformly in fewer passes, because
combined air and electrostatic forces literally follow the shape of the work surface. Bounce losses from
work are reduced by the electrostatic attraction, when proper techniques are used.
The following describes basic electrostatic spray techniques. Depending on the type of work being
sprayed, it may be necessary to change the technique slightly.

IL-246-B
REA/Vector Applicators Spray Techniques
22
22
2
FF
FF
FAN CONTROLAN CONTROL
AN CONTROLAN CONTROL
AN CONTROL
The size of the object being coated is the determining factor in adjusting the fan pattern; the larger the
object, the larger the required fan pattern. Fan control of the ITW Ransburg REA/Vector applicators is
accomplished by rotating the adjusting knob located at the rear of the applicator. Fan width can be set
for approximately a 3-inch width (minimum) to approximately a 14-inch (maximum). Fan widths and
overall pattern appearances are illustrated.
Minimum
Maximum
PP
PP
PAA
AA
ATTERNTTERN
TTERNTTERN
TTERN
POOR PATTERNPOOR PATTERN
POOR PATTERNPOOR PATTERN
POOR PATTERN
Dirty, worn, or
damaged nozzle.
Clean or replace.
SPLIT PATTERNSPLIT PATTERN
SPLIT PATTERNSPLIT PATTERN
SPLIT PATTERN
Fan too wide - narrow
adjustment slightly.
GOODGOOD
GOODGOOD
GOOD PATTERNPATTERN
PATTERNPATTERN
PATTERN
AA
AA
ABB
BB
BCC
CC
C
> The degree of atomization is dependent
on the viscosity of the paint formulation, the
applied air pressure, and nozzle selection.
NOTENOTE
NOTENOTE
NOTE

IL-246-B
REA/Vector Applicators Spray Techniques
33
33
3
HORIZONTHORIZONT
HORIZONTHORIZONT
HORIZONTALAL
ALAL
AL PASSESPASSES
PASSESPASSES
PASSES
The spray applicator should be maintained in a
position at right angles to the object and should be
moved in a path parallel to the object.
VERTICAL PASSESVERTICAL PASSES
VERTICAL PASSESVERTICAL PASSES
VERTICAL PASSES
There may be instances where it is more practical
to coat an object using vertical passes rather than
horizontal. First, rotate the nozzle to shift the fan
pattern, then holding the applicator at right angles
to the object, move the applicator in a straight
vertical path as illustrated.
FLAFLA
FLAFLA
FLATT
TT
TSURFSURF
SURFSURF
SURFACESACES
ACESACES
ACES
One of the most prevalent of "bad" spray painting
habits is the one where the operator holds his arm
steady and swings his wrist back and forth. This
is a hard habit to break, it gives the illusion of
adding speed to the coating operation, when in
reality, it is slower and much more inefficient.
Spray painting in this fashion results in light films
on both sides, excessive film at center, and
increased overspray with excessive "bounce-
back."

IL-246-B
REA/Vector Applicators Spray Techniques
44
44
4
>>
>>
>The object being coated is maintained at
groundpotential,thesprayapplicator operator
is also grounded, therefore, the operator has
as much attraction for the electrostatic paint
as the object. To prevent "wrapback" always
keep the applicator closer to the target than it
is to you.
C A U T I O NC A U T I O N
C A U T I O NC A U T I O N
C A U T I O N
!!
!!
!
APPLICAAPPLICA
APPLICAAPPLICA
APPLICATT
TT
TOR TOR T
OR TOR T
OR TOO
OO
O
TT
TT
TARGETARGET
ARGETARGET
ARGET DISTDIST
DISTDIST
DISTANCEANCE
ANCEANCE
ANCE
The distance between the applicator and the target
influences the appearance of the final finish coating
of the object. If the applicator is held too close
(under 4-inches), runs and sags with the
excessive bounce-back can occur. If the
applicator is held too far from the object, the
electrostatic attraction is decreased. Normally,
the best spacingbest spacing
best spacingbest spacing
best spacing between applicator and target
is in the 4 to 12-inch area.4 to 12-inch area.
4 to 12-inch area.4 to 12-inch area.
4 to 12-inch area. However, this
distance can vary with extremely high delivery
systems. Maximum target distance should not
exceed 12-inches.
Too FarToo Far
Too FarToo Far
Too Far
4" to 6"4" to 6"
4" to 6"4" to 6"
4" to 6"
Under 2"Under 2"
Under 2"Under 2"
Under 2"

IL-246-B
REA/Vector Applicators Spray Techniques
55
55
5
> If front and back are both sprayed, there
may be enough wrap using Technique B or
C to coat a small edge or flange. If wide
flanges are to be coated, this may require
individual coating of edges before the flat
surfaces are sprayed.
NOTENOTE
NOTENOTE
NOTE
OVERLAPOVERLAP
OVERLAPOVERLAP
OVERLAP
For best hiding and uniformity of film thickness, stroke overlap should be approximately 50%. There
should be some overlap at the top and bottom of the part to increase edge coverage. Overlap
requirements can vary widely with different paint formulations and different compositions of objects
being coated. Individual spray coating operational experience should provide the guidelines for
efficiency in this instance.
TRIGGERINGTRIGGERING
TRIGGERINGTRIGGERING
TRIGGERING
Applicator triggering (ON/OFF) depends largely on the desired results; the amount of wraparound
required, edge coating, etc. If front and back of the object are being coated, proper applicator technique
can effect edge coating (in some instances) without making a specific pass for this purpose. Examples
of different trigger times and the results that can be expected are illustrated.
A. Little or no wrap - incomplete coverage
B. Fair - some wrap
C. Good wrap (Triggered 2" to 3" past edge)
D. Too much overstroke may produce heavy
edges and produce more overspray.
DD
DD
DCC
CC
CBB
BB
BAA
AA
A
(Trigger Off)
TOP VIEW

IL-246-B
REA/Vector Applicators Spray Techniques
66
66
6
LARGE OBJECTSLARGE OBJECTS
LARGE OBJECTSLARGE OBJECTS
LARGE OBJECTS
BlendingBlending
BlendingBlending
Blending
If the size of the object is greater than the spray
applicator operator can reach, it should be coated
in segments, the size of each segment being the
length the spray applicator operator can
comfortably span. Each segment should be
blended with the adjacent segment using
"feathering" or "over-lapping" strokes. A slight
angle of the applicator improves the results of the
"blending" pass.
TOP VIEW TOP VIEW
>>
>>
>Too much overlap can result in runs and
sags or excessive film, where segments
blend together.
C A U T I O NC A U T I O N
C A U T I O NC A U T I O N
C A U T I O N
!!
!!
!

IL-246-B
REA/Vector Applicators Spray Techniques
77
77
7
> Avoid applicator to targe distances of
over 12-inches, excessive applicator to tar-
get distances will result in wrapback.
NOTENOTE
NOTENOTE
NOTE
TUBULAR WORKTUBULAR WORK
TUBULAR WORKTUBULAR WORK
TUBULAR WORK
Tubular parts or objects up to approximately 2-1/2" diameter can be coated successfully from one side,
utilizing wraparound characteristics and proper techniques.
A. Wrong fan position - little wrap. Heavy film on front surface,
possible sags.
B. Correct fan position - better wrap. More accurately con-
trolled film. Normally fan pattern should be slightly wider
than parts being sprayed.
C. Correct fan position but excessively wide fan may produce
more overspray if used in this position.
D. A wide fan tilted at an angle may also work well. (Wide fans
have slower forward velocity.)
SUGGESTION:SUGGESTION:
SUGGESTION:SUGGESTION:
SUGGESTION: Small tubes may be racked in groups to simulate larger targets. This allows the use
of wider fans and may help improve efficiency.
↑↑
↑↑
↑
↓↓
↓↓
↓
BB
BB
B
AA
AA
A
FAN POSITION
(Example 1"
Diameter Part)
MOTION
CC
CC
C
DD
DD
D
Adjust the fan for a pattern
width slightly wider than the
object. This allows some
coating material to start
around the sides of the
object.
Increase the applicator to target
distance to approximately 10-
12-inches. This will decrease
the speed of the paint particles
in the vicinity of the target.
Hold the applicator at an angle
of 30o to 45oto the object. This
will direct paint more to target
area.