Spot Cleaning Flux Residues Using BrushClean™ System
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Chemtronics® manufactures a large variety Flux-Off® brand flux removers to satisfy many different requirements, for example if the cleaner needs to be nonflammable, safe on sensitive plastics, or have extra cleaning strength. Many Flux-Off cleaners are available with the BrushClean™ system with allows for controlled application of solvent
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When a large area needs to be cleaned or rinsed, the trigger sprayer can be used without any attachment. For spraying into tighter areas, like under low standoff components, the straw attachment can be used. The BrushClean system allows you to clean in a more controlled way, avoiding cross contamination and preventing solvent from reaching sensitive components and coatings. It also minimizing solvent usage.
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Each BrushClean can comes with a fresh brush. Choose the FluxOff® flux remover according to the flux you are trying to remove and other application requirements. For help, contact us here
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Chemtronics® Coventry™ brand consists of a variety of swabs and wipers dedicated to precision cleaning of sensitive electronics. The 4” x 4” (10.2cm x 10.2cm) Coventry Econowipe™ (part #6704) is a polyester-cellulose lint-free wiper that is ideal for use in combination with the BrushClean system because it is both strong and absorbent. For areas that are more likely to tear the wipe and create particulates, like the underside of a through-hole PCB, use either the Chemtronics Twillwipes™ (C900) or Coventry Poly-Wipes (6209).
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| There is a common misconception that you can spray flux residues or swab with isopropyl alcohol and the contamination will evaporate with the solvent. What actually happens is the solvent evaporates but leaves the residue behind. This might hide the problem, since the flux is spread over a wider area, but the potential for corrosion and dendritic growth from ionic contamination hasn’t changed. Using a wipe in combination with the brush allows you to not only break down and dissolve the flux residues, but also remove them from the PCB surface. |  |
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Before you start, take necessary precautions to avoid electrostatic discharge, like a grounded wrist-strap. Next attach the brush to end of the spray nozzle and remove the plastic safety-lock tab
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To use a Flux-Off flux remover with a BrushClean system, place the wipe over component connectors to be cleaned. Lightly spray or dribble out a small amount of solvent while pressing down on the wiper firmly with the brush. Move around or scrub with the brush over the wipe to provide addition agitation. Shortly you will see the solvent with the dissolved flux wick up into the wipe. Repeat this step for each side of the component, moving to a fresh part of the wipe each time.
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For a video demonstration of this process, go to https://youtu.be/-rCS8WnMjV0
Availability
Flux-Off® Products with Brushclean™ System Coventry™ Econowipes™
| ES835B Flux-Off Rosin, 5 oz / 141 g aerosol | 6704 4" x4" (10.2 cm x 10.2 cm), 1200 wipes/bag |
| DEL892B Flux-Off Delta, 6 oz / 170 g aeroso | 6704F 4" x4" (10.2 cm x 10.2 cm), 100 wipes/bag |
| ES7208B Flux-Off CZ, 5 oz / 141 g aerosol | Chemtronics® Twillwipes™ |
| ES897B Flux-Off Lead-Free, 6 oz / 170 g aerosol | C900 9" x 9" (22.9 cm x 22.9 cm), 150 wipes/bag |
| ES896B Flux-Off No Clean Plus, 6 oz / 170 g aerosol | Coventry™ Poly-Wipes |
| 6209 9" x 9" (22.9 cm x 22.9 cm), 150 wipes/bag |
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Technical and Application Assistance Chemtronics provides a technical hotline to answer your technical and application related questions. The toll free number is: 1-800-TECH-401. |
8125 Cobb Center Drive • Kennesaw, GA 30152-4386 |
Note:
This information is believed to be accurate. It is intended for professional end users having the skills to evaluate and use the data properly. CHEMTRONICS does not guarantee the accuracy of the data and assumes no liability in connection with damages incurred while using it.