The study table on the market can adjust the height of the table according to the height of the child. The study table is an essential tool for children to do homework. For example, there is a great and handsome study table on the market. The function is intelligent lifting and lowering, and the desktop can be folded. , When a person sits in front of the table, they naturally enter the concave table top, and the two arms droop naturally. Because the two elbows are supported by the concave plate, the body naturally does not lean forward, which effectively solves the shortcomings of lying on the stomach to write and study. When shopping for a Study Desk, be sure to keep these must-have features in mind. The focus of the study table is to correct the sitting posture and prevent myopia, which is a foldable study table with a concave table top.
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Working principle and maintenance mode of SW-CJ-1G/2G ultra-clean workbench (Figure)
**Product Features**
1. The quasi-closed glass damper effectively prevents external air from entering and minimizes the impact of odors on the operator.
2. An adjustable air volume fan system combined with a liquid crystal display (LCD) control panel ensures that the airflow speed in the working area remains optimal at all times.
**Technical Parameters**
| Model | SW-CJ-1G | SW-CJ-2G |
|-------|----------|----------|
| Cleanliness Level | Level 100 @ ≥0.5μM (US Federal 209E) | Level 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 (fast/slow speed) | 0.25 ~ 0.45 m/s (fast/slow 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 |
| Maximum Power | 130W | 300W |
| Weight | 85Kg | 150Kg |
| Work Area Size | W1×D1×H1 | W1×D1×H1 |
| Dimensions | 700×400×600 | 1150×400×600 |
| Overall Dimensions | W×D×H | 850×580×1600 | 1300×580×1600 |
| Applicable Number | Single/single | Double/single |
| HEPA Filter Specifications | 695×600×38×1 | 1135×600×38×1 |
| Fluorescent / UV Lamp Specifications | 15W×1/15W×1 | 30W×1/30W×1 |
**Structure**
The purification workbench consists of several components including the cabinet, fan, high-efficiency filter, and operation switch. The cabinet is made of cold-rolled steel, with a spray-coated surface and a stainless steel workbench. The purification unit uses an adjustable air volume fan system, which allows for precise control of the airflow to maintain an ideal wind speed in the clean working area and extend the service life of the high-efficiency filter.
**Working Principle**
Air passes through a pre-filter, is pressed into a static pressure box by a centrifugal fan, and then filtered through a high-efficiency filter before being blown out through the air outlet. This creates a uniform, clean airflow that moves through the workspace, removing dust and maintaining a highly purified environment.
**Installation and Use**
Place the workbench in a relatively clean room (preferably a 100,000 or 300,000 class cleanroom), connect it to power, and turn on the control panel. Before starting, clean the working area and outer casing thoroughly. After running for 10 minutes, the system will be ready for normal use.
**Maintenance**
1. Regularly remove and clean the primary filter every 3–6 months to prevent reduced airflow and decreased performance.
2. If the desired wind speed is not achieved after cleaning the primary filter, adjust the fan voltage to restore proper airflow.
3. If the fan voltage is at its maximum and the desired wind speed is still not achieved, it may indicate that the high-efficiency filter is clogged and needs replacement. Typically, the service life of a HEPA filter is around 18 months.
4. When replacing the HEPA filter, ensure the model and size match the original specifications, align the airflow direction, and check the seal to prevent leaks.
**Common Faults, Causes, and Solutions**
| Fault Phenomenon | Cause | Solution |
|------------------|-------|----------|
| Main power switch doesn't close, trips automatically | Fan is jammed, motor blocked, or circuit shorted | Adjust fan position, replace impeller or bearing, check wiring |
| Low wind speed | Primary filter is too dirty | Clean the primary filter |
| Fan does not rotate | 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 |
**Zhejiang Sujing Purification Equipment Co., Ltd.**
Located in Daoxu Town, Shangyu District, Shaoxing City, Zhejiang Province, Zhejiang Sujing is one of the leading manufacturers in the purification equipment industry in East China. We provide professional air purification systems for industries such as microelectronics, biomedicine, hospital operating rooms, fiber optics, food and beverage, precision instruments, semiconductors, and new materials, following ISO14644-1, GB50073-2001, and GMP standards. Our services include engineering design, construction, testing, and technical support.
Our main product lines include purification workbenches, air showers, fume hoods, and biological safety cabinets, widely used in healthcare, electronics, pharmaceuticals, biology, food, agriculture, aerospace, automotive manufacturing, and research institutions. We enjoy a strong reputation in both domestic and Southeast Asian markets.
Zhejiang Sujing is committed to providing high-quality products, personalized service, and competitive pricing. We welcome you to join us and experience our dedication to global customers.
