All-steel ventilation cabinet:
1. Case: Made of 1.0mm thick Shanghai Baosteel hot-dip galvanized steel plate, coated with epoxy resin electrostatic powder spray through an automatic production line,高温cured for high-temperature resistance, acid and alkali corrosion resistance, suitable for chemical laboratories. It features sturdy load-bearing capacity.
2. Drainage Plate (Inner Siding): Made of 5mm thick Galvalume sheet.
3. Countertop: Made of 12.7mm thick core chemical board, reinforced to 25.4mm at the front edge.
4. Glass Sliding Door: Equipped with synchronous wheels, synchronous belts, and synchronous shafts for smooth and effortless operation. Offers infinite positioning with no tilt in the sliding door. The window features PVC profiles and 5mm tempered clear glass. The counterweight system includes a rear sliding track with noise-reducing sealing felt strips.
5. Features a liquid crystal control panel for operation.
6. Includes 4x 10A single 5-hole outlets.
7. Illumination is via a quick-start LED three-proof light.
Fume hoods, also known as smoke cabinets or ventilation cabinets, are large equipment used in laboratories, particularly chemical labs. Their purpose is to minimize contact between the experimenter and harmful gases. Full isolation requires the use of a glove box. Fume hoods serve as the primary barrier to protect personnel from the hazards of toxic chemical fumes. They can act as crucial safety backup equipment, effectively expelling harmful gases during chemical experiment failures, chemical smoke, dust, and toxic gas generation, safeguarding both staff and the laboratory environment.
Ventilation Fume Hood Operation Instructions
First, stand or sit in front of the cabinet, then lower the glass door as much as possible. You can reach your hand through the bottom of the door to perform the experiment. Since the exhaust fan draws air inward through the open door, harmful gases will not溢出 in large quantities under normal circumstances. Caution: When more than two fume hoods are used with one fan, to avoid operational errors or mishaps, the on/off control of the fan should be handled by only one operator. Every two hours, the fume hoods should be supplemented with 10 minutes of make-up air while in use.
Cautionary Notes for the Use of Fume Hoods
❖
Indoor air temperature ranges from -5℃ to +40℃, with a 24-hour average not exceeding +25℃.
❖
Always ensure proper ventilation in the laboratory, even when the fume hood is not in use, as it benefits the health of the laboratory personnel.
❖
When more than two fume hoods are using the same exhaust fan, to prevent operational errors or misuse, the "on" and "off" control of the fan should be handled by a single operator; if another fume hood is temporarily not in use or needs to be shut down, use the air volume control valve to seal the ventilation opening; avoid repeatedly turning the fan on and off, as this not only damages the fan's lifespan but also affects the experimental results.
❖
When in use, avoid disturbances caused by personnel movement, which may create counter-ventilation affecting the fume hood.
❖
The fume hood should be supplemented with 10 minutes of make-up air (i.e., open window ventilation) every 2 hours; for use exceeding 5 hours, keep the windows open to prevent negative pressure indoors.
