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Air Generator

Air generator used in laboratory

1. What is air generator?
2. Working principle of air generator
3. Features of air generator
4. Use of air generator
    4.1 Details when using air generator
    4.2 Replacement of discolored silica gel in the air generator
    4.3 Air generator problems and solutions
5. How to buy air generator?

What is air generator?

Air generator is a laboratory instrument that compresses air through a compressor and stores it in a storage tank for use. It mainly consists of the compressor, storage tank, filter, drying chamber, and other major parts.

The air used in laboratories has strict requirements. To ensure that experiments can be performed properly, the daily air needs to be treated, which requires an air generator. The air generator replaces the traditional high-pressure air cylinder.

Working principle of air generator

The air generator is generally composed of an air pump/compressor, pressure stabilization system, pressure control system, purification system, and display system.

The air circuit system adopts a pressure stabilization and overpressure protection device, which improves the stability of gas pressure and ensures the safety and reliability of the instrument use. The air generator is equipped with a drainage and dust filtering device and adopts stainless steel storage tank instead of a carbon steel storage tank, which greatly improves the purity of compressed air.

The air generator purifies the natural air, removes the water, oil, and impurities in the air, and outputs stable and clean air through the pressure stabilization device.

Features of air generator

a. Equipped with automatic adsorption to exclude other substances in the air, such as hydrocarbons, esters, oils, etc. Greatly improve the quality of air.

b. Electrolysis of pure water directly without adding alkali.

c. With low water level alarm function to protect the electrolytic cell from dry burning.

d. With over-water protection function, which effectively protects the GC from damage.

e. Adopting the international advanced SPE (Solid State Electrolysis) technology.

f. With microcomputer chip control circuit, whose pressure fluctuation is less than 0.3%.

g. The electrolysis tank is made of aviation titanium alloy. Stainless steel gas storage tank, automatic water discharge.

h. High purity of gas production platinum-plated polymer exchange membrane.

i. Automatic alarm protection system to prevent air leakage, overcurrent, and overheating. Double branch filter, two-stage pressure stabilization. High output pressure accuracy, with perfect protection measures.

j. With LCD and a high degree of automation.

k. Low pressure starts to effectively improve the life of the compressor. Small volume, low noise.

l. Continuous use by simply replenishing distilled water.

Use of air generator

a. Please check whether the accessories and warranty card are available when you take the instrument out of the packing box.

b. Check the appearance and internal of the instrument for any abnormalities such as serious damage caused by transportation.

c. Replace the sealing wire plug on the "air input" port on the rear panel of the instrument with the "filter" in the kit.

d. Tighten the sealing mother on the "air output" port on the rear panel to prevent air leakage.

e. Connect the instrument power cord to the ground wire. The machine can be placed directly on the ground.

f. Turn on the power, start the switch, and the instrument starts to work.
a) The output pressure gauge pointer gradually rises to 0.4 MPa, which is set at the factory.
b) After several minutes, the compressor stops working.
c) Loosen the sealing nut on air output A slightly to allow venting.
d) Soon, the compressor starts automatically.
e) The pressure gauge should always remain at 0.4MPa during the repeated cycle of compressor start-up - shutdown - start-up, which indicates that the instrument is operating properly. However, when the discharge volume exceeds the rated value, the pressure gauge will not be stable at 0.4MPa。
f) When the compressor is running, some water is automatically drained every time it stops. When the compressor is running, some water is automatically drained every time it stops.

g. When turning off the power, you should remove the pressure cap on the air output port, and then connect the instrument with an OD pipe and make sure it is sealed without air leakage.

h. Simply activate the power switch to run again.

Details when using air generator

a. To ensure air purity, the air generator needs to replace the activated carbon once every 1000 hours of work.

b. During machine operation, if the compressor does not start but the thermal protection relay is activated, this indicates that the compressor temperature is too high. At this time, the air generator needs to be cooled. After cooling, it can automatically resume normal operation.

c. The inlet filter needs to be cleaned regularly to keep the inlet air flowing smoothly to prevent the compressor from heating up due to increased workload. Overheating protection will occur when the temperature is too high and lead to a shutdown. The cleaning cycle of the air inlet filter should depend on the indoor dust condition, and ultrasonic cleaning is available.

d. The discolored silica gel can be viewed through the observation window. Users can replace the silica gel or dry it as needed.

e. The compressor is using an inductive load. The instantaneous current during power on and off is several times higher than normal operation, resulting in easy to fuse the insurance, so an 8A fuse should be used.

f. The compressor works in an open circuit, so the lubricating oil will be discharged out of the machine with water, causing consumption. Therefore, it is necessary to add oil to the compressor after one year of use. The oiling port is next to the compressor outlet, or from the air inlet.

g. To avoid too much water in the machine, affecting the air purity, you need to press the drain switch for a few seconds before each shutdown. The drainage port can be connected to the plastic bottle to avoid water splashing. Drainage should not be less than once a day.

Replacement of discolored silica gel in the air generator

The silica gel inside the drying tube will be found to change color gradually from bottom to top after using the air generator for some time. When the discoloration exceeds a certain level, the silica gel should be replaced. The procedure is as follows.

a. Rotate and remove the drying tube.

b. Unscrew the top cap of the drying tube. Remove the cotton ball and pour out the silica gel.

c. Fill with new or dried silica gel. The amount should be no more than the central thin blue tube orifice.

d. Cover with a cotton ball. Note that there should be no cotton on the mouth of the drying tube, otherwise it will easily lead to air leakage.

e. Screw the top cover tightly.

f. Screw the drying tube.

Air generator problems and solutions

A. Does not run after powering on

a. If the work indicator light does not light up, you should check whether the power outlet is plugged in firmly, whether the light cord is off, and whether the insurance is burned.

b. The working indicator light is on, but the compressor does not work or the pressure is slow.
a) Check whether the air input blocking is removed.
b) For filters with a long-life cycle, you should clean them regularly to ensure smooth flow.
c) Check whether the hose of air input to the compressor is in normal condition.
d) Replace the protector.
e) If the machine does not operate after checking the above possibilities, the compressor needs to be replaced.

B. Noise during operation of air generator

a. If it is the solenoid valve that makes a strange noise, you should adjust the solenoid valve above the pressure cap tightness. If there is still a strange noise after adjustment, you should disassemble the solenoid valve and use alcohol to clean the inner parts. The solenoid valve is generally located in the upper rear corner of the instrument.

b. If it is a check valve noise, you should spin down the check valve out of the end, and then use sharp tweezers to rotate the inner pressure wire clockwise until there is no noise. The one-way valve, located between the gas tank and the solenoid valve, is a hexagonal valve body with an airflow direction mark.

c. The reason for the sound of the pressure regulator valve is the amount of gas flow is large. you should properly reduce the gas flow or by the clockwise direction turn the pressure stabilizer knob a quarter turn.

d. The compressor may make a strange noise because it is broken in transportation, or its use cycle is long and the compressor lacks oil. If it is noisy and affects the use of the compressor, it should be replaced.

C. The compressor of the air generator does not stop working or has a short start interval and leaks air

a. Check both ends of the drying chamber and whether the gasket is cracked. The gasket cannot adhere to cotton and broken silica particles.

b. If the pressure regulator valve is leaking, you need to feel it by hand or listen to the sound.

c. Leak check each pipe connection point and output connection point with soapy water.

How to buy air generator?

ANTITECK provide lab equipment, lab consumable, manufacturing equipment in life sciences sector.
If you are interested in our air generator or have any questions, please write an e-mail to [email protected], we will reply to you as soon as possible.

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