The characteristics of desktop clean bench products and their application

The VD series table top clean Bench is a local purification unit designed to create a sterile, dust-free, and clean environment, commonly used in medical, biotechnological, and scientific research fields. It ensures optimal conditions for sensitive procedures by maintaining high air quality standards. **Product Features:** 1. Vertical airflow design with a quasi-closed glass damper for easy operation. 2. Compact size allows it to be placed on standard workbenches, making it ideal for small laboratories or studios. 3. Equipped with a remote control switch that allows two-speed fan operation, ensuring consistent airflow in the working area.  **Technical Parameters:** | Parameter | VD-650 | VD-850 | |----------|--------|--------| | Cleanliness Level | Class 100 @ ≥0.5μM (US Federal 209E) | Class 100 @ ≥0.5μM (US Federal 209E) | | Number of Colonies | ≤0.5 pcs/dish·hour (Φ90mm culture plate) | ≤0.5 pcs/dish·hour (Φ90mm culture plate) | | Average Wind Speed | 0.25–0.45 m/s (high/low speed) | 0.25–0.45 m/s (high/low speed) | | Noise | ≤62 dB(A) | ≤62 dB(A) | | Vibration Half-Peak | ≤0.5 μm (x, y, z direction) | ≤0.5 μm (x, y, z direction) | | Illuminance | ≥300 Lx | ≥300 Lx | | Power Supply | AC single phase 220V/50Hz | AC single phase 220V/50Hz | | Work Area Size | W1×D1×H1 | W1×D1×H1 | | Dimensions | 500×480×450 | 700×480×450 | | High Efficiency Filter | 480×460×38×1 | 680×460×38×1 | | Fluorescent / UV Lamp | 10W×1/10W×1 | 15W×1/15W×1 | **Structure:** The purification workbench consists of a cabinet, fan, high-efficiency filter, and an operation switch. The cabinet is made from cold-rolled steel and coated with a durable spray finish. The working surface is constructed from stainless steel. The fan system allows for adjustable airflow, enabling users to maintain the desired wind speed within the clean zone, which helps extend the lifespan of the high-efficiency filter. **Working Principle:** Air passes through a pre-filter, enters a static pressure chamber via a centrifugal fan, and is then filtered through a high-efficiency filter before being released as clean air through the outlet surface. This uniform airflow removes contaminants, creating a highly purified working environment. **Installation and Use:** Place the workbench in a clean room (preferably a 100,000 or 300,000 class area), plug in the power, and turn on the controls. Before use, clean the work surface and the outer casing thoroughly. After running for 10 minutes, the unit will be ready for normal operation. **Maintenance:** 1. Regularly clean the primary filter every 3–6 months to prevent dust buildup that may reduce airflow efficiency. 2. If the desired airflow cannot be achieved after cleaning the primary filter, adjust the fan voltage to restore proper wind speed. 3. If the fan voltage is at maximum and the airflow is still insufficient, the high-efficiency filter may be clogged and should be replaced. Typically, the high-efficiency filter lasts about 18 months. 4. When replacing the high-efficiency filter, ensure the correct model and size are used, align the airflow direction, and check the seal to avoid leakage. **Common Faults and Solutions:** | Fault Phenomenon | Cause | Solution | |------------------|-------|----------| | Main power switch does not close, trips automatically | Fan stuck, motor blocked, or short circuit | Adjust fan position, replace impeller or bearing, check wiring | | Low wind speed | Primary filter too dusty | Clean or replace the primary filter | | Fan doesn’t turn | Contactor not working, fuse blown | Check contactor circuit, replace fuse | | Fluorescent light not lit | Lamp or relay damaged, fuse blown | Replace lamp or relay, replace fuse | **Applications:** Zhejiang Sujing Purification Equipment Co., Ltd. specializes in providing advanced air purification systems tailored to industries such as microelectronics, biomedicine, hospitals, pharmaceuticals, food processing, and more. Their products, including purification workbenches, air showers, fume hoods, and biological safety cabinets, are widely used in medical, electronic, agricultural, and research sectors across China and Southeast Asia. With a commitment to quality, innovation, and customer satisfaction, Zhejiang Sujing serves global consumers and distributors, offering reliable solutions at competitive prices. We welcome you to join us in building a cleaner, safer future. 

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