Fume Extraction Systems by Why Fume Extraction Health

Fume Extraction Systems by

Why Fume Extraction? § Health & safety of employees vital § Fume Extraction Systems are a viable & cost effective method for reducing exposure to harmful contaminants, particulates & gases

Work Environment Concerns Soldering Fluxes Cleaning Agents Conformal Coatings Cyanoacrylates (Superglue)

Soldering Fume & Lead Poisoning § Lead not the problem § Tin/Lead solder does not create respirable fume unless temp well over 1000 OF! § Lead poisoning caused mainly by ingestion: – Eating without washing hands after soldering – Smoking cigarettes after handling solder

The Culprit: Soldering Flux/Colophony § Soldering flux fume generates Colophony § Colophony health effects studied 30+ years, a demonstrated health hazard § Legislated in many countries

Health & Safety Executive (HSE) Study § 1995 Landmark study (UK Government sponsored) § Extensive investigation of flux fume § HSE Conclusions: – Solder fume resin acids and formaldehyde are sensitizers – Sensitizer: substance that can trigger an allergic reaction at any level – Cause of Occupational Asthma

Sensitizing Agents: Other Research § AIHA Studies Dec ‘ 97, Dec ‘ 98 & Apr ‘ 99 § Resin acid a major component in Colophony § Resin acid – Constituents clearly associated with dermal and pulmonary sensitization – Particles are respirable size (sub-micron)

Size Particle Categories of Risk § Inhalable Fraction – 10 microns + – Pollens § Thoracic Fraction – 3. 5 -10 microns – Coal dust § Respirable Fraction – Less than 3. 5 microns – Bacteria, cigarette smoke, flux fume

USA Occupational Health Regulations § Respirable particles – Regulated at 3 mg/M 3 – Same size as cigarette smoke

Particulate Inhalation Ranges

What Occurs When Fume Enters Lungs? § Particulate penetrates alveolar regions of the lung § Resin acids attach and remain undissolved (resin acid has low water solubility)

What Occurs When Fume Enters Lungs? § Lung macrophages (tissue cells that protect from noxious substances) ingest the particles § Interaction between resin acids & macrophages play significant role in pulmonary sensitization and induction of asthma

Controlling Exposure § Administrative Controls – – Job Rotation Limiting time involved in certain activities Reduce work time These options not feasible § Engineering Controls more common

Engineering Controls Source Controls Intercept Path to Receiver Personal Protection § Change or eliminate source – not practical § Personal Protection – Respirators, gas mask, filter masks – Bulky, employee acceptance extremely low § Preferred Method: intercept path from source to receiver with local exhaust system

Benefits of Local Exhaust Systems § Minimal disruption to worker § Hazardous particulates pulled away before reaching worker’s breathing zone § Secondary contamination affecting nearby workers removed § Filtered air safely recirculated into work environment, not exhausted to outside § Compact, self-contained & portable § Lower cost

Idealized Central Filtration System Intake Duct Filter Condition Gauge Vacuum Pump Pre-Filter HEPA Filter Activated Carbon Filter

3 - Stage Filtration § Pre-Filter § Removes large, coarse particles, prevents clogging § HEPA (High Efficiency Particulate Air) Filter § Removes the micro particles § Can filter 99. 997% to 0. 3 & 95% to 0. 001 micron § Activated Carbon Filter - removes odors and gases

Arm-Evac 105 Central Filtration Unit § Best protection from harmful fumes, at an affordable cost 1 or 2 workstations § Portable and compact can easily be placed on or under a workbench § Brushless motor § Housing made of heavy duty, 20 gauge steel

Arm-Evac 200 Central Filtration Unit High volume air flow Compact/self contained Fits under any bench 1 or 2 workstations Heavy duty brushless motor § Includes pre-filter & combo filter § Optional Silencer/Cart § § §

Arm-Evac 250 Central Filtration Unit Intelligent Pump Multi-color LED Filter Condition Monitor w/ Audible Alarm Optional Benchtop Controller 3 -Position Speed adjustment

Arm-Evac 500 Central Filtration Unit § Serves 2 -6 workstations § Compact: Fits easily under workbenches § High airflow motor pump § Easy-to-read graphical LED filter condition monitor § Self calibrates § Audible alarm when a filter change-out is required.

Arm-Evac 50 Bench Top Extractor § Provides wide area fume extraction § Highly efficient source capture at 2 points using the optional arm attachment § Operator adjustable airflow § Quiet operation § Wide variety of filters

Fume Extraction Accessories

ESD-Safe Flex Arms § Flex Arms attach directly to Arm-Evac § Bench mounting kit comes with bracket and 8’ of 3” flex hose § Flex Arm Kit comes with Arm & Bench Mounting Kit

Metal Flex Arm § 1. 75” Diameter Arms § High quality stainless steel § Easily removed from flange & easily slips back in place § Air volume controlled by integral locking quadrant flow controller (optional for 1. 75” Arm)

Metal Plenum § Provides Wide Area Fume Extraction § Provides Shelf so no bench space is lost § Comes with 8’ of 3” Flex Hose

Fume. Flo Work Table § Acts as Downdraft Table or Plenum (using laminar-flow) § Attaches to any Arm. Evac 105, 200, 250 & 500 § ESD-safe

Filter Options § General Purpose Filter Cartridge § For soldering applications § Standard – comes with 105, 200 & 250 § Combines High Efficiency Particle Filtration with Gas Adsorption

Other Filter Options § Adhesive Filter for conformal coating, adhesive, gluing or board cleaning operations § Clean Room Filter for controlled environments § Economy Filter for grinding and sanding operations § High Capacity Filter for heavier volumes of fumes