Ransburg REA-III, REA-70, REM-IV, REA-90, M90 Technical Manual
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RELA RELA
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TED INFORMATED INFORMA
TED INFORMA
TED INFORMATED INFORMA
TECHNICAL MANUAL
IL-259-BIL-259-B
IL-259-B
IL-259-BIL-259-B
(Replaces IL-259-A)
TION FORTION FOR
TION FOR
TION FORTION FOR
REAREA
REA
REAREA
TMTM
TM
TMTM
, REM, REM
, REM
, REM, REM
TMTM
TM
TMTM
, and M90, and M90
, and M90
, and M90, and M90
TMTM
TM
TMTM
GUNS GUNS
GUNS
GUNS GUNS
IMPORIMPOR
IMPOR
IMPORIMPOR
carefully read all instructions in this manual.carefully read all instructions in this manual.
carefully read all instructions in this manual.
carefully read all instructions in this manual.carefully read all instructions in this manual.
Keep this TKeep this T
Keep this T
Keep this TKeep this T
ence.ence.
ence.
ence.ence.
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ANTANT
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ANT
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ANTANT
: Before using this equipment,: Before using this equipment,
: Before using this equipment,
: Before using this equipment,: Before using this equipment,
echnical Manual for future refer-echnical Manual for future refer-
echnical Manual for future refer-
echnical Manual for future refer-echnical Manual for future refer-
TT
echnical Manual Price: $20.00 (U.S.)echnical Manual Price: $20.00 (U.S.)
T
echnical Manual Price: $20.00 (U.S.)
TT
echnical Manual Price: $20.00 (U.S.)echnical Manual Price: $20.00 (U.S.)
NOTE:NOTE:
NOTE: This manual has been changed from revision
NOTE:NOTE:
for this change are noted under “Manual Change Summary” inside the back cover of
this manual.
IL-259-AIL-259-A
IL-259-A to revision
IL-259-AIL-259-A
IL-259-B IL-259-B
IL-259-B. Reasons
IL-259-B IL-259-B
IL-259-B
Paint Related Information for REA, REM, and M90 Guns
CONTENTSCONTENTS
CONTENTS
CONTENTSCONTENTS
PAINT FORMULATION (REA, REM, & M90):PAINT FORMULATION (REA, REM, & M90):
PAINT FORMULATION (REA, REM, & M90):
PAINT FORMULATION (REA, REM, & M90):PAINT FORMULATION (REA, REM, & M90):
PAGEPAGE
PAGE
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1-21-2
1-2
1-21-2
PAINT FORMULATION FOR REA, REM, & M90 GUNS..........................................................
USE OF METALLIC PAINTS (REA, REM, & M90):USE OF METALLIC PAINTS (REA, REM, & M90):
USE OF METALLIC PAINTS (REA, REM, & M90):
USE OF METALLIC PAINTS (REA, REM, & M90):USE OF METALLIC PAINTS (REA, REM, & M90):
CURRENT DEMAND TEST FOR HIGH VOLTAGE
POWER SUPPLIES / CLASSIC STYLE GUNS........................................................................
CURRENT DEMAND TEST FOR LOW VOLTAGE
CONTROL UNITS / CASCADE STYLE GUNS.........................................................................
FLUID LINES FOR METALLIC OR LOW RESISTANCE
COATINGS (REA TYPE GUNS ONLY).....................................................................................
WARRANTY POLICIES:WARRANTY POLICIES:
WARRANTY POLICIES:
WARRANTY POLICIES:WARRANTY POLICIES:
LIMITED WARRANTY.................................................................................................................
APPENDIX:APPENDIX:
APPENDIX:
APPENDIX:APPENDIX:
PAINT AND SOLVENT SPECIFICATIONS...............................................................................
VISCOSITY CONVERSION CHART.........................................................................................
VOLUMETRIC CONTENT OF HOSE OR TUBE......................................................................
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3-63-6
3-6
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77
7
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8-118-11
8-11
8-118-11
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IL-259-B
Paint Formulation for REA, REM, and M90 Guns
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REA, REM, AND M90 GUNSREA, REM, AND M90 GUNS
REA, REM, AND M90 GUNS
REA, REM, AND M90 GUNSREA, REM, AND M90 GUNS
FORMULA FORMULA
FORMULA
FORMULA FORMULA
TION FORTION FOR
TION FOR
TION FORTION FOR
ITW Ransburg’s REATM (Electrostatic Air) and
TM
REM
Airless) equipment can be operated satisfactorily,
in most installations, using the same paint
formulation used with the comparable nonelectrostatic equipment. However, the user who
wishes to experiment to improve performance
may try the following three variations in the paint
formulation:
1.
To do this, add more of the solvent normally used
or replace the normal solvent in whole or part with
a solvent having increased solvency.
With many higher viscosity or higher solids
coatings, heat may be required or more desirable
to reduce viscosity.
Paints of lower viscosity require less air or hydraulic
atomizing force which reduces the forward velocity
of the atomized paint. Lower velocity results in
higher electrostatic efficiency and corresponding
decrease in overspray loss.
The useful ranges of viscosity varies considerably
for different coating materials and applications,
depending on the various requirements of film
thickness, hiding, texture, etc.
, and M90TM (Electrostatic Air Assisted/
Decrease Viscosity:Decrease Viscosity:
Decrease Viscosity:
Decrease Viscosity:Decrease Viscosity:
In general, the degree of flowability which can
be tolerated is governed by the other physical
requirements of the application.
ncrease Electrical Resistance:ncrease Electrical Resistance:
3. I
ncrease Electrical Resistance:
ncrease Electrical Resistance:ncrease Electrical Resistance:
The electrical resistance of paint and solvents
can be measured with ITW Ransburg’s Paint
Resistance Tester (76652-03).
NOTENOTE
NOTE
NOTENOTE
> Ransburg’s Paint Testers only mea-
sure the bulk resistance of the coating
material and will not indicate the conductivity of metallics or other conductive pigments.
NOTENOTE
NOTE
NOTENOTE
> Water reducible coatings may be
sprayed in the insulated versions of the
TM
REA
-III and REATM-90 ONLY.
Increase Flowability:Increase Flowability:
2.
Increase Flowability:
Increase Flowability:Increase Flowability:
This can be done by replacing all or part of the
usual solvent with one having a slower evaporation
rate. This permits the paint to flow out better, both
on the front face of the part and on electrostatic
wrap-around areas. Wrap-around generally tends
to be slightly drier than paint which has been
deposited on the front face. The effect of increased
flowability can be illustrated by paints which will
hide poorly at 1.2 to 1.5 mils total dry film thickness
if they have not flowed out properly, versus the
same paints which have very good hiding at .8 to
1.0 mil when they have been well-atomized and
have good flowability.
11
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11
IL-259-B
Paint Formulation for REA, REM, and M90 Guns
SOLVENTS LISTED IN ORDER OF INCREASING POLARITY*SOLVENTS LISTED IN ORDER OF INCREASING POLARITY*
SOLVENTS LISTED IN ORDER OF INCREASING POLARITY*
SOLVENTS LISTED IN ORDER OF INCREASING POLARITY*SOLVENTS LISTED IN ORDER OF INCREASING POLARITY*
(Below listed trade names are only indications of range. Equivalents may be used.)
Non and Low PolarityNon and Low Polarity
Non and Low Polarity
Non and Low PolarityNon and Low Polarity
Mineral Spirits
Textile Spirits
VM&P Naptha
High Flash Naptha
SC-100
SC-150
Heavy Aromatic Naptha-HAN
Xylol
Toluol
Trichlorethylene
Odorless Mineral Spirits
n-Butyl Acetate
Medium PolarityMedium Polarity
Medium Polarity
Medium PolarityMedium Polarity
Ethyl Acetate
Cyclohexanol (Hexalin)
Butyl Carbitol (Dowanol19)
Isophorone
High PolarityHigh Polarity
High Polarity
High PolarityHigh Polarity
Methyl Ethyl Ketone
Methyl Isobutyl Ketone
Acetone
Isopropyl Alcohol
Methyl Cellosolve (Dowanol-EM)
Diacetone Alcohol (Diacetone)
Ethyl Alcohol
Methyl Acetate (Metal-60)
*Users should be aware of solvent restriction imposed in some areas. See your solvent supplier for details.
Figure 1: Solvents Listed in Order of Increasing PolarityFigure 1: Solvents Listed in Order of Increasing Polarity
Figure 1: Solvents Listed in Order of Increasing Polarity
Figure 1: Solvents Listed in Order of Increasing PolarityFigure 1: Solvents Listed in Order of Increasing Polarity
Figure 1 will aid in selection of solvents that will
increase electrical resistance of the formulation.
ITW Ransburg’s Bulletin TL-00-02 "Solvent
Selection" covers solvent selection and recommended electrical resistance ranges for ITW
Ransburg’s No. 2 Process rotary atomizers, both
automatic and manual equipment. These
recommendations have been misinterpreted by
many who are concerned with paint formulation for
REA and REM guns. Bulletin TL-00-02 DOES
NOT apply to this non-rotating equipment.
There are isolated cases where the use of a
certain conductive solvent actually improved the
performance of a given paint in REA and REM
guns; however, this improvement resulted from
decrease in viscosity and/or increase in flowability
and not because of decrease in resistance. It is
emphasized that this improvement was in spite of
decreased resistance and not because of it.
If all other factors are held constant, the higher the
paint resistance, the higher will be the efficiency
when using the REA and REM guns. Therefore,
when using Ransburg Paint Tester with REA and
REM equipment, efforts to increase paint
resistance, while still maintaining the same quality
of atomization and flow, will yield maximum paint
transfer efficiency.
IL-259-B
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