TechFlo Model T660H-C / T930H-C
Printable PDF Specs
FEATURES
These units are recirculatory, i.e. filtered air is exhausted back into the workplace.
Comprising: Particulate filter to 5.0 microns - 4kg (T660H-C) or 8kg (T930H-C) activated carbon filter - Centrifugal blower(s), brushless, external, rotor motor type (Model T930H-C uses two blowers), UL, VDE and CSA approved - Sealed electrical wiring and switch(s) – T930H-C has dual airspeed function - Steel construction finished in dove grey - Hood enclosure workstation complete with clear polycarbonate panel and hood illumination.
| Dimensions | T660H-C | T930H-C |
|---|---|---|
| H x W x D | 600x680x530 | 740x960x720 |
APPLICATIONS
For use in situations where external venting is impractical and hydrocarbon vapour and gas filtration is necessary. Applications include the handling and use of electrochemicals (cleaning solvents, conformal coatings etc) resins, sealants and adhesives both in aerosol and static form, solder pots and solder irons. Also used in orthopaedics and dental laboratories for controlling staff exposure to, typically, methyl methacrylate, cyanoacrylate adhesives and for the safe weighing of hazardous powders.
Optional accessories available include Part No’s HE495 (T660H-C) and HE705 (T930H-C) pleated particulate filter for fine dust/powder and solder fume capture to 0.3-micron particles. Stainless steel spillage trays and perforated grids.
These units are designed for operator protection whereby gases, fumes, vapours and particulate contaminants are filtered. Cleaned air is exhausted at the rear of the cabinet.
| MODEL NO | FAN MOTOR * | AVERAGE AIR VELOCITY AT FILTER FACE |
AVERAGE AIR VELOCITY AT HOOD FACE |
|---|---|---|---|
| T660H-C | 230V 50Hz 40W | 0.50m/sec 98ft/min | 0.38 m/sec 74ft/min |
| T930H-C | 230V 50Hz 80W | 0.57m/sec 112ft/min | .55 m/sec ** 108ft/min |
* 110V 60Hz available if required.
** T930H-C at slow setting, air velocity is 0.33 m/sec at hood face
WEIGHT: T660H-C = 38kg T930H-C = 60kg
Detailed Dimensions:- T660H-C = A, T930H-C= B
FILTRATION
The particulate filter (Ref. 5) is a three stage, graduated fibre filter. The open structure of the first stage discourages surface loading and promotes depth filtration, ensuring a high dust holding capacity and reducing resistance to airflow. The denser backing filter and final scrim material provides finer filtration to 5 micron.
NB: Spray particulate size varies from 10 to 20 microns.
An optional pleated, HEPA filter to 0.3 microns is available for high-grade filtration, typically to arrest solder fume (smoke) particulates ranging in size from 0.3 to 10 microns and potentially harmful fine powders.
NB: Solder fume consists of 95% particulates and 5% gases.
The activated carbon filter (Ref. 3 below) will adsorb a high percentage of solvent vapour and gases. Brief examples are given below of tests undertaken to assess the effectiveness of the filters. A Gastec pump and colorimetric adsorption tubes were used to measure vapour and gas concentrations.
1) Application: Protective coating for electronics applied by brush.
Contaminant: Organic solvents (total hydrocarbon adsorption tubes were used)
Operator exposure working on a bench top was 180ppm. Operator exposure using the fume hood was not detectable. Exhaust air from the rear of the cabinet was less than 10ppm (i.e. not detectable).
2) Application: Manufacture of dental prosthetics and hearing aid mouldings.
Contaminant: Methyl methacrylate
Operator exposure working on a bench top was 200ppm. Operator exposure using the fume hood was not detectable. Exhaust air from the rear of the cabinet was less than 10ppm (i.e. not detectable).
3) Application: Electronic cleaning process using aerosol spray.
Contaminant: Isopropyl Alcohol (IPA)
Operator exposure working on a bench top was 1500ppm. Operator exposure using the fume hood was not detectable. Exhaust air from the rear of the cabinet was less than 10ppm (i.e. not detectable).
NB: Specially treated carbon filters are available on request for specialist applications.
| Ref No | Description | Part Number |
|
|---|---|---|---|
| T660H-C | T930H-C | ||
| 1 | Handwheels M6 x 4 | P5004 | P5004 |
| 2 | Fan Housing/Mounting | P1001-C | P1002-C |
| 3 | 4kg or 8kg Activated Carbon Filter | AC200 | AC100 |
| 4 | Carbon Filter Retainer | ||
| 5 | Particulate (Intake) Filter to 5 micron | IFA3 | IFA2 |
| 5 | Particulate (Intake) Filter to 0.3 micron (Opt.) | HE495 | HE705 |
| 6 | Hooded Enclosure | P4001 | P4002 |
| 7 | Hood Lighting Unit & Polycarbonate Panel | P4010L | P4020L |
