{"id":5373,"date":"2026-09-26T09:16:27","date_gmt":"2026-09-26T17:16:27","guid":{"rendered":"https:\/\/dez-smt.com\/?p=5373"},"modified":"2026-10-07T11:54:08","modified_gmt":"2026-10-07T19:54:08","slug":"pcb-cleaning-methods-brush-air-vacuum-rollers-which-contamination-does-each-remove","status":"publish","type":"post","link":"https:\/\/dez-smt.com\/pt\/pcb-cleaning-methods-brush-air-vacuum-rollers-which-contamination-does-each-remove\/","title":{"rendered":"M\u00e9todos de Limpeza de PCB: Escova, Ar, Aspirador &amp; Roladores: Que Contamina\u00e7\u00e3o Cada Um Remove?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Brushes, ionised air, vacuum extraction and tacky rollers do not perform the same cleaning function.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On a bare PCB before solder paste printing, they can form one dry-cleaning process: ionised air releases static-attracted particles, brushes detach contamination, vacuum captures it and tacky rollers collect particles remaining on accessible flat surfaces.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After wave or selective soldering, brush cleaning operates differently. A compatible cleaning fluid and controlled brush contact can remove accessible flux marks and loose solder balls from the solder side of an assembled PCBA.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#match-the-contamination-to-the-cleaning-method\">Match the Contamination to the Cleaning Method<\/a><\/li><li><a href=\"#ionised-air-releases-static-attracted-particles\">Ionised Air Releases Static-Attracted Particles<\/a><\/li><li><a href=\"#brushes-detach-contamination\">Brushes Detach Contamination<\/a><\/li><li><a href=\"#vacuum-captures-released-particles\">Vacuum Captures Released Particles<\/a><\/li><li><a href=\"#tacky-rollers-transfer-residual-dry-particles\">Tacky Rollers Transfer Residual Dry Particles<\/a><\/li><li><a href=\"#how-the-dez-c753s-combines-all-four-methods\">How the DEZ-C753S Combines All Four Methods<\/a><\/li><li><a href=\"#brush-cleaning-after-soldering-dez-c758-or-dez-c760\">Brush Cleaning After Soldering: DEZ-C758 or DEZ-C760<\/a><\/li><li><a href=\"#when-brush-air-vacuum-and-rollers-are-not-enough\">When Brush, Air, Vacuum and Rollers Are Not Enough<\/a><\/li><li><a href=\"#which-pcb-cleaning-machine-should-you-choose\">Which PCB Cleaning Machine Should You Choose?<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"match-the-contamination-to-the-cleaning-method\" class=\"wp-block-heading\"><strong>Match the Contamination to the Cleaning Method<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Contamination<\/th><th>Board and process stage<\/th><th>Effective method<\/th><th>Suitable DEZ equipment<\/th><\/tr><tr><td>Dust and loose powder<\/td><td>Bare PCB before printing<\/td><td>Brush, vacuum and tacky roller<\/td><td>DEZ-C753S<\/td><\/tr><tr><td>Fibres, hair and board debris<\/td><td>Bare PCB before printing<\/td><td>Brush detachment followed by vacuum capture<\/td><td>DEZ-C753S<\/td><\/tr><tr><td>Static-attracted particles<\/td><td>Bare PCB before printing<\/td><td>Ionised air followed by vacuum or roller collection<\/td><td>DEZ-C753S<\/td><\/tr><tr><td>Fine dry particles on flat surfaces<\/td><td>Bare PCB before printing<\/td><td>Tacky roller contact transfer<\/td><td>DEZ-C753S<\/td><\/tr><tr><td>Loose solder balls<\/td><td>Accessible PCBA solder side after soldering<\/td><td>Controlled brush contact and waste collection<\/td><td>DEZ-C758 or DEZ-C760<\/td><\/tr><tr><td>Visible flux marks<\/td><td>Accessible PCBA solder side after soldering<\/td><td>Cleaning-fluid application and wet brushing<\/td><td>DEZ-C758 or DEZ-C760<\/td><\/tr><tr><td>Flux beneath low-standoff components<\/td><td>Assembled PCBA<\/td><td>Compatible aqueous cleaning with wash, DI-water rinse and drying<\/td><td>DEZ-C743 or DEZ-C1360<\/td><\/tr><tr><td>Defined ionic-contamination requirement<\/td><td>Assembled PCBA<\/td><td>Validated cleaning process plus ionic testing<\/td><td>DEZ-C743 or DEZ-C1360<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">No single cleaning element covers every condition. The method must match both the contaminant and its location.<\/p>\n\n\n\n<h2 id=\"ionised-air-releases-static-attracted-particles\" class=\"wp-block-heading\"><strong>Ionised Air Releases Static-Attracted Particles<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fine dust may remain on a PCB because of electrostatic attraction rather than strong physical adhesion. Ordinary compressed air can move this contamination without preventing it from returning to the board.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ionised air supplies balanced positive and negative ions that reduce the electrostatic charge holding particles to insulating surfaces. It is useful for releasing lightweight dust and fibres, but it does not collect them.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ionisation must therefore operate with vacuum extraction or another collection stage. Its performance should be checked through ion balance and discharge-time measurements rather than assumed from the presence of an ionising bar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/dez-smt.com\/product\/pcb-cleaning-machine-with-double-sided-cleaning\/\">DEZ-C753S double-sided PCB cleaning machine<\/a> combines ionised air with brushes, dual vacuum extraction and tacky rollers. This configuration is intended for dry contamination on bare PCBs before solder paste printing.<\/p>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-1f696f9\" id=\"gspb_image-id-gsbp-1f696f9\"><img decoding=\"async\" src=\"https:\/\/dez-smt.com\/wp-content\/uploads\/2026\/08\/PCB-Surface-Cleaning-Before-Solder-Paste-Printing.webp\" data-src=\"\" alt=\"PCB Surface Cleaning Before Solder Paste Printing\" loading=\"lazy\" width=\"1200\" height=\"675\"\/><\/div>\n\n\n\n<h2 id=\"brushes-detach-contamination\" class=\"wp-block-heading\"><strong>Brushes Detach Contamination<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Brushes apply mechanical contact where airflow or suction alone cannot release the contamination.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For bare PCBs, brushes target dry contaminants such as fibres, hair, board debris and particles attached to accessible surface features. The released material must then be extracted by vacuum or transferred to a tacky roller. Technical-cleanliness guidance similarly identifies brushing as a method for removing more firmly adhering particles while noting that brushes require cleaning and replacement as contamination accumulates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For assembled PCBAs, the brush performs a different job. When used with a compatible cleaning fluid, it can act on accessible flux marks and loose solder balls on the solder side after wave or selective soldering.<\/p>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-d7f5dbc\" id=\"gspb_image-id-gsbp-d7f5dbc\"><img decoding=\"async\" src=\"https:\/\/dez-smt.com\/wp-content\/uploads\/2026\/08\/PCBA-Single-Side-Cleaning-Machine-DEZ-C758-Cleaning-System-coating-roller.webp\" data-src=\"\" alt=\"PCBA Single Side Cleaning Machine DEZ C758 Cleaning System coating roller\" loading=\"lazy\" width=\"1200\" height=\"675\"\/><\/div>\n\n\n\n<h2 id=\"vacuum-captures-released-particles\" class=\"wp-block-heading\"><strong>Vacuum Captures Released Particles<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum extraction removes particles after they have been loosened by brushes or released through static neutralisation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is effective for collecting:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Loose dust<\/li>\n\n\n\n<li>Fibres<\/li>\n\n\n\n<li>Board debris<\/li>\n\n\n\n<li>Particles lifted by brushes<\/li>\n\n\n\n<li>Airborne contamination inside the cleaning chamber<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum does not normally remove cured flux, oil or strongly adhered films by itself. Its effectiveness also depends on airflow at the cleaning point, duct condition and filter loading.<\/p>\n\n\n\n<h2 id=\"tacky-rollers-transfer-residual-dry-particles\" class=\"wp-block-heading\"><strong>Tacky Rollers Transfer Residual Dry Particles<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A tacky roller contacts an accessible flat PCB surface and lifts remaining dry particles. The collected contamination is then transferred from the cleaning roller to replaceable adhesive paper.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tacky rollers are effective for fine dust and small dry particles that remain after initial brushing and vacuum extraction. They are not intended to remove flux films, oil or ionic contamination.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Direct contact is required. A tacky roller cannot reliably clean deep holes, recessed areas or surfaces obstructed by assembled components. The roller and adhesive paper must also be replaced before contamination loading causes reduced collection or reverse transfer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For this reason, tacky rollers are particularly relevant to flat bare PCBs and are not a general solution for populated PCBA surfaces.<\/p>\n\n\n\n<h2 id=\"how-the-dez-c753s-combines-all-four-methods\" class=\"wp-block-heading\"><strong>How the DEZ-C753S Combines All Four Methods<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The DEZ-C753S uses the four mechanisms as a coordinated dry-cleaning system:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ionised Air \u2192 Brush Detachment \u2192 Vacuum Capture \u2192 Tacky-Roller Transfer<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its three brushes loosen accessible contamination from both sides of the bare PCB. Ionised air reduces electrostatic attraction, two vacuum collectors remove released particles, and front-and-rear tacky rollers collect particles remaining on accessible surfaces.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key operating data include:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Parameter<\/th><th>DEZ-C753S<\/th><\/tr><tr><td>Workpiece<\/td><td>Bare PCB before solder paste printing<\/td><\/tr><tr><td>Cleaning coverage<\/td><td>Double-sided<\/td><\/tr><tr><td>PCB size<\/td><td>50 \u00d7 50\u2013350 \u00d7 350 mm<\/td><\/tr><tr><td>PCB thickness<\/td><td>0.4\u20133 mm<\/td><\/tr><tr><td>Cleaning brushes<\/td><td>Three<\/td><\/tr><tr><td>Vacuum collectors<\/td><td>Two<\/td><\/tr><tr><td>Tacky rollers<\/td><td>Front and rear<\/td><\/tr><tr><td>Static elimination<\/td><td>Built in<\/td><\/tr><tr><td>Conveyor height<\/td><td>900 \u00b125 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Choose the DEZ-C753S when the main problem is dust, fibres, hair, loose particles or static-attracted contamination before printing.<\/p>\n\n\n\n<h2 id=\"brush-cleaning-after-soldering-dez-c758-or-dez-c760\" class=\"wp-block-heading\"><strong>Brush Cleaning After Soldering: DEZ-C758 or DEZ-C760<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Post-solder brush cleaning should not be confused with the dry cleaning performed by the DEZ-C753S.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/dez-smt.com\/product\/single-sided-pcba-cleaning-machine\/\">DEZ-C758 single-sided PCBA cleaning machine<\/a> applies cleaning fluid to the accessible solder side, followed by multidirectional wet brushing, dry brushing and fan drying. It supports PCBA widths of 50\u2013300 mm and component heights up to 135 mm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choose the DEZ-C758 when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Only the accessible solder side requires cleaning<\/li>\n\n\n\n<li>The main problems are visible flux marks or loose solder balls<\/li>\n\n\n\n<li>Continuous conveyor processing is required<\/li>\n\n\n\n<li>Fan drying is required after brush cleaning<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/dez-smt.com\/product\/automatic-pcba-brush-cleaning-machine-dez-c760\/\">DEZ-C760 automatic PCBA brush cleaning machine<\/a> applies alcohol-based PCBA cleaning fluid before using one 360 mm rotary brush and two roller brushes. It processes PCBAs up to 300 \u00d7 300 mm and requires at least 1.5 mm of available board edge for gripping.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choose the DEZ-C760 when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Multidirectional rotary and roller-brush contact is required<\/li>\n\n\n\n<li>The PCBA fits within 300 \u00d7 300 mm<\/li>\n\n\n\n<li>At least 1.5 mm of board edge is available<\/li>\n\n\n\n<li>The contamination is accessible from the solder side<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Neither machine should be described as a complete ionic-cleanliness process unless the cleaned PCBA passes the specified test method.<\/p>\n\n\n\n<h2 id=\"when-brush-air-vacuum-and-rollers-are-not-enough\" class=\"wp-block-heading\"><strong>When Brush, Air, Vacuum and Rollers Are Not Enough<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These methods are unsuitable when contamination is beneath components, trapped in low-standoff gaps or distributed across the complete assembly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For complete chemical washing, DI-water rinsing and controlled drying, select an <a href=\"https:\/\/dez-smt.com\/pcba-cleaning-machines\/\">aqueous PCBA cleaning machine<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DEZ-C743:<\/strong> offline batch washing for high-mix production<\/li>\n\n\n\n<li><strong>DEZ-C1360:<\/strong> continuous inline aqueous PCBA cleaning<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Visible cleanliness does not confirm ionic cleanliness. If ionic contamination is part of the acceptance requirement, define the test method and limit before selecting the machine.<\/p>\n\n\n\n<h2 id=\"which-pcb-cleaning-machine-should-you-choose\" class=\"wp-block-heading\">Which PCB Cleaning Machine Should You Choose?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Use the following selection rule:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bare PCB dust, fibres or static-attracted particles before printing:<\/strong> DEZ-C753S<\/li>\n\n\n\n<li><strong>Accessible solder-side flux marks and loose solder balls:<\/strong> DEZ-C758<\/li>\n\n\n\n<li><strong>Accessible solder-side cleaning requiring rotary and roller brushes:<\/strong> DEZ-C760<\/li>\n\n\n\n<li><strong>Complete offline aqueous washing, DI rinsing and drying:<\/strong> DEZ-C743<\/li>\n\n\n\n<li><strong>Continuous inline aqueous cleaning:<\/strong> DEZ-C1360<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Send DEZ the board dimensions, component height, contamination photographs, flux or cleaning-agent information, required takt time and cleanliness criterion. Representative boards can then be tested to confirm whether dry particle cleaning, solder-side brush cleaning or aqueous cleaning is the correct process.<\/p>\n\n\n<style id=\"wpforms-css-vars-95-block-2bb7d118-682d-4f80-9644-bd23a811174a\">\n\t\t\t\t#wpforms-95.wpforms-block-2bb7d118-682d-4f80-9644-bd23a811174a {\n\t\t\t\t--wpforms-label-color: #262626;\n--wpforms-label-sublabel-color: #7f7f7f;\n--wpforms-label-error-color: #ff0000;\n--wpforms-page-break-color: #dddddd;\n--wpforms-field-border-radius: 0px;\n--wpforms-field-border-color: #cccccc;\n--wpforms-field-border-color-spare: #cccccc;\n--wpforms-field-text-color: #444444;\n--wpforms-button-border-style: solid;\n--wpforms-button-border-radius: 0px;\n--wpforms-button-background-color: #dddddd;\n--wpforms-button-text-color: #666666;\n--wpforms-button-border-color: #cccccc;\n--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 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.wpforms-container -->","protected":false},"excerpt":{"rendered":"<p>Compare escova, ar ionizado, aspirador e roladores pegajosos para remover part\u00edculas de PCBs nus e superf\u00edcies acess\u00edveis de PCBA p\u00f3s-soldagem.<\/p>","protected":false},"author":1,"featured_media":4109,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"#gspb_image-id-gsbp-1f696f9 img,#gspb_image-id-gsbp-d7f5dbc 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