I. Overview:

Nitrogen is colorless, odorless, non-toxic, non-flammable, and non-explosive, making it very safe for use. Its molecular structure is highly stable, typically resistant to chemical reactions with other substances, and exhibits inertness, widely used as a protective gas. This series of nitrogen generators utilizes the pressure swing adsorption principle, separating oxygen from nitrogen in the air through carbon molecular sieves to produce nitrogen. It boasts simple process flow, small footprint, low investment, easy operation, convenient maintenance, and other advantages. The purity of the nitrogen produced can be adjusted according to actual needs, and the equipment has good adaptability. The working principle is PSA nitrogen production, using high-performance CMS carbon molecular sieve AB twin towers for alternating continuous nitrogen production.The PGN-120L high-purity nitrogen generator is compatible with various nitrogen blowers both domestically and internationally; widely used in laboratories for analysis and testing in the fields of petrochemicals, chemicals, coal, medicine, food, beverages, environmental protection, indoor air quality, sanitation, quarantine, power, public security, and universities.

The High Purity Nitrogen Generator is powered by an air compressor, featuring superior dual pumps, self-designed vibration and heat insulation measures, an automatic drain system, a heat dissipation system, a gas purification and filtration system, and an internal overpressure safety protection device. The gas storage tank is made of high-grade stainless steel. The control system includes dual-stage protection against overpressure and overcurrent. Stable pressure and throttle devices are connected in the nitrogen gas circuit, ensuring the quality of the gas used. It is easy to operate, safe, and reliable, ensuring the stability of continuous machine operation. The PGN-120L High Purity Nitrogen Generator is our flagship product, gaining increasing recognition from customers. Key components in the gas circuit, such as solenoid valves and pressure regulators, are imported to ensure stable operation under high pressure and high flow conditions, placing this product at the forefront of the market. This instrument is highly suitable for large-volume gas supply. The machine has increased the compressor power and separator materials. With mature technology and processes, our company can easily handle continuous, heavy-duty operations. The Nitrogen Generator, due to its mature technology, ease of use, low gas production costs, and high purity, has long been a substitute for high-pressure cylinders. It is increasingly being chosen by laboratories, leading to the complete elimination of expensive and dangerous high-pressure cylinders from laboratories.

Section II: Working Conditions and Operating Environment:

1. Requirements for compressed air source:

Compressed Air Pressure: 0.6～0.8MPa       

Compressed Air Dew Point: <-10℃

Oil-free and water-free compressed air; Oil content in compressed air: <0.01 PPM

    Note: Regularly check that the automatic drain is functioning properly; otherwise, it will severely affect the nitrogen generator's lifespan.

2. Environmental Requirements:

Ambient Temperature: 5～120℃; Optimal operating temperature for the machine is 20-25℃

Relative Humidity: ≤80%

Power: 220V 50Hz

Power: 4400W

Weight: 280 kg

Dimensions: 1000*650*1500mm

Nitrogen Output: 0-120L/min

Purity of Nitrogen: 99-99.99%

Section 3: Nitrogen Generator Operation Procedure

Power-on sequence:

Turn on the air pump switch and observe the air pressure gauge after 2 minutes, ensuring it reaches above 0.6mpa.

2. Next, turn on the power switch. The pressure in Tower A begins to rise, and Towers A and B start alternating operations. As the nitrogen pressure gradually increases to 0.5 MPa, open the regulating valve on the nitrogen outlet pipeline to maintain a continuous discharge at a pressure not below 0.4 MPa. The purity of the nitrogen will continue to increase until it meets the required purity for use.

3. Power off sequence: first close the nitrogen outlet, maintain the highest nitrogen pressure, then turn off the intermediate power and air pump switches.

4. Equipped with automatic start/stop pressure technology, the nitrogen generator automatically shuts off power when the nitrogen pressure reaches 0.6MPA. During this time, the power button is non-functional. Once the nitrogen pressure drops to 0.4MPA, the machine automatically resumes operation, promoting energy conservation and cost reduction.

IV. Quality Assurance Terms:

1. Our nitrogen generators and equipment produced by our company come with a 12-month warranty, unless otherwise agreed upon in the contract. With normal use as per this manual and regular proper maintenance and inspections, the equipment's lifespan should be 8-10 years. Outside of the warranty period, we will also handle equipment repairs until it is deemed scrap. For repairs outside of the warranty period, we will only charge for parts.

2. Warranty Coverage During Quality Assurance Period: During the warranty period, the equipment warranty covers any failures or malfunctions of the equipment or instruments due to inherent quality issues in certain parts or normal wear and tear, under the condition that the user operates and uses the equipment properly.

Customers requiring free warranty parts or equipment should promptly notify our company upon any malfunction and retain the faulty part as received. Replacement will be arranged upon our personnel or phone confirmation.

Beijing Pulexi Technology Co., Ltd.

Address: No. 198, Chang Cui Road, Changping District, Beijing, Building 2, 804

Phone: 189-1140-5427

Website: www.bjpulaixi.cn