In general, there are some problems with nitrogen generators as follows:

1), air filter, freeze dryer, air storage tank is not normally drained.

2) The freeze dryer is not refrigerated and no personnel find it in time.

3) The front of the nitrogen machine is not equipped with activated carbon degreaser.

4) Nitrogen silencer has a large number of black particles.

5) Some pneumatic valves are damaged.

6) The equipment has not changed the air filter element until now.

Solve the problem as follows:

The air storage tank drain outlet is equipped with a timed drain to reduce the load pressure of post-treatment.

The normal use of the equipment should pay attention to check whether each timing drainage device is normal drainage, whether the air pressure meets more than 0.6Mpa, and whether there is a cooling effect by comparing the import and export of the cold and dry machine. Check whether the purity of nitrogen is stable.

The air filter must be changed at a frequency of 4000 hours.

Activated carbon filter can effectively filter oil, can extend the service life of high-quality carbon molecular sieve, activated carbon needs to be replaced in 3000 hours or 4 months.

The pneumatic valve and solenoid valve of the nitrogen generator are the operating components. It is recommended to prepare one for each model to prevent future problems.

Nitrogen machine maintenance and construction of our company's on-site guidance steps are divided into:

Your company is responsible for the site construction, personnel 5 people, a set of various tools, welding machine, cutting machine, the corresponding pipe Nodry, my company purchased a set of parts.

Construction steps: simply clean the site, cut off the gas and power, remove the head of the adsorption tower by two people, remove all the pipes of the nitrogen machine by two people, remove the waste in the adsorption tower, clean it up, check whether the top and bottom diverter plate of the adsorption tower of the nitrogen equipment is damaged, and repair it in time. All pipelines should be cleaned with compressed air, pneumatic valve to check the sealing ring damage, serious need to replace the pneumatic valve. The air treatment part of the filter is updated, and the activated carbon filter pipeline transformation has a simultaneous construction. After all the work is completed, install all the pipes and valves, ventilate and energize, purge the entire system pipeline once, and start the carbon molecular sieve charging operation with the guidance of the on-site supervisor. After the loading, start the nitrogen maker, check whether each interface is leaky, and test nitrogen purity and productivity.

After the completion of all works, the on-site guide will introduce the daily use and precautions to the responsible personnel of your company.

After the maintenance and renovation of the equipment is completed, your company will strictly follow the precautions to operate, and then the problem will repeat, our company promises as follows:

Nitrogen machine purity: 98%

Nitrogen production capacity: 200 cubic meters per hour

Nitrogen pressure: Adjustable between 0 and 0.65Mpa

The service life of carbon molecular sieve decreases by 5% per year (due to the aging of carbon molecular sieve, inevitable)

The service life of CMS-220 carbon molecular sieve is recommended by the manufacturer to be 5-6 years, and our company recommends to replace it once every 4 years.

The ammonia decomposition furnace needs to be calibrated regularly (see the operating instructions). If the analyzer displays accurately and the system works normally, but the product gas does not reach the target, consider whether the molecular sieve has failed. If it is confirmed that it has failed, replace the molecular sieve. This must be done by professional technicians.

The filter core of the three-stage filter of the NZN series ammonia decomposition furnace needs to be replaced regularly. If the pressure difference between the front and back of the filter is found to be ≥0.05 ~ 0.1Mpa, the filter element must be replaced in time.

Replacement method: unscrew the lower shell of the filter core, then unscrew the filter core, change the new core, and then screw on the lower shell, and tighten it. Note: The filter core should be replaced when the system stops running and the air pressure in the line must be removed. Otherwise, it can lead to serious life damage. When replacing the filter core, do not damage or leak the metal pressure ring or "O" sealing ring that acts as a seal. Otherwise, the filter will not work.

In addition, all filters have automatic blowdown function. However, it is still necessary to check the automatic blowdown device once a week.

In order to ensure the long-term stable and reliable operation of the ammonia decomposition furnace, the user must do some daily maintenance work. Each equipment of the system has a detailed description of the manual, please be sure to follow the requirements of the manual maintenance. These include:

1. Dust removal and cleaning.

2. Whether the solenoid valve works normally;

3. Whether the electrical control part of the ammonia decomposition furnace is firmly connected and whether the electrical components are normal;

4. Whether the pipeline and fittings of the ammonia decomposition furnace are damaged or leaked;