Q: What aspects should we pay attention to in the maintenance of nitrogen machine?



A: It is very necessary to understand the accurate maintenance of nitrogen machine common sense, outstanding operational habits and punctual maintenance and protection, can extend the normal use of equipment life, reduce energy consumption, reduce repair costs, but also useful to prevent sudden problems, significantly reduce the negative impact of problems on production. The following lets you understand the accurate common sense and method of nitrogen machine maintenance.



First, the daily use of nitrogen machine maintenance precautions:



1. The normal supply of power, air and temperature conditions required by the machine and the normal opening and closing; In particular, the stability of the power supply voltage reduces the damage to the controller and solenoid valve caused by the power supply question.



2. Always pay attention to the pressure of the air storage tank, and insist that the pressure of the air storage tank is between 0.7 and 0.75 MPa, not lower than the additional value.



3. Check the active drainer daily to avoid blocking and losing the drainage effect. If it is blocked, the manual valve can be slightly opened, the self-discharge valve can be closed, and then the active drainer can be removed for differentiation and cleaning. When cleaning the active drainer, use soap to clean it. Corrosive solutions such as gasoline, toluene and rosin water are prohibited.



4. The operator should be punctual to investigate the three pressure gauges on the machine, make a normal record of the pressure change for equipment fault analysis, investigate the flow meter and nitrogen purity at any time, and insist on the nitrogen purity of the gas.



5. Check whether the heat sink of the cold dryer is clean on time every week to avoid affecting the efficacy and life of the dryer due to bad heat dissipation.



6. According to the requirements of the instrument application code, operation and normal protection, untimely check the sensitivity of the solenoid valve/pneumatic valve, the pressure scale of the pressure regulator, the accuracy of the gas analyzer, the compression of the adsorption tower, the exhaust of the muffler, the cleanliness of the inner tube of the flow meter, etc.



Second, nitrogen machine cycle maintenance



1: The periodic protection of the air-cooled cold dryer is mainly to blow the radiator on time and clean the sewage outlet; Carefully read the operation and protection instructions of the cold drying machine, and strictly protect the cold drying machine according to the cycle protection methods and methods recommended by the cold drying machine manufacturer.



2: The periodic protection of fine filters is mainly to replace the filter element on time according to the use of the filter. If the filter pressure difference is found to be too large, replace the filter element in time. You can refer to the filter manufacturer recommended cycle protection methods and methods to protect the filter. Replace every 4000 hours of operation.

3: The replacement cycle of activated carbon filters is mainly based on the use of filters. If it is found that the system pressure drops too much, it may be activated carbon soaked in water and replaced activated carbon in time. The replacement cycle is usually 6000-8000 hours.



4: Calibration of the oxygen analyzer, check once a month, if the oxygen content is found to be higher than the additional value, to think about whether the oxygen probe has expired, timely replacement of the oxygen probe. A replacement cycle of one year is advocated.



Other accessories according to the use of the situation, in case of doubt, timely replacement, has guaranteed the normal operation of the equipment.



Nitrogen machine maintenance:



· Each equipment has an accurate maintenance accounting



· No need to store a lot of spare parts for the equipment



· There is no need for special training and special personnel



· The maintenance plan enables the equipment to have the best use of power



· The customer can freely choose the required maintenance project must be the most suitable for the user's needs



· Provide value-added services for users



· The after-sales service department of Chennuo Company is responsible for arranging and implementing all the maintenance plans, and the equipment status is recorded and archived by the computer of the after-sales service department of Chennuo Company



Nitrogen machine routine maintenance and repair needs attention:



1, air compressor should be punctual protection, air filter, oil worry, oil should be in accordance with the instructions to call the manufacturer to replace.



2, the cold and dry machine should be punctual to check the refrigerant pressure, so as to timely supplement, the heat sink dust should be blown with compressed air every day, the filter element should be replaced on time, the normal is 8000H, depending on the specific situation and the pressure difference.



3, open the air tank sewage outlet once a day to drain the condensed water in the air.



4. Check the active drainer every day to avoid blocking and losing the drainage effect. If it is blocked, the manual valve can be slightly opened, the self-discharge valve can be closed, and then the active drainer can be removed for differentiation and cleaning. When cleaning the active drainer, use soap to clean it.



5, the nitrogen machine first check the adsorption tower operating pressure, purity, flow record.



6, the activated carbon in the activated carbon filter is usually advocated to replace once a year.



7. Punctual calibration of nitrogen separator is recommended once a year.



8, to check the sensitivity of the pneumatic valve and the solenoid valve, the wear of the pneumatic valve affects the purity of nitrogen, which is a wearing part.



9. The ammonia valve should be calibrated to the boiler inspection office every year. The above is the nitrogen machine common problems, for reference.



Description of the normal operation of the equipment:



1, the power indicator light, left suction, voltage balancing, right suction indicator light cycle bright indicating the nitrogen production process;



2. When the left suction indicator light is on, the pressure of the left adsorption tank gradually rises to the highest from the equilibrium pressure during pressure balancing, and the pressure of the right adsorption tank gradually drops to zero from the equilibrium pressure during pressure balancing.



3. When the pressure balancing indicator is on, the pressure of the adsorption tank will gradually reach the balance between one liter and one drop.



4. When the right suction indicator light is on, the pressure of the right adsorption tank gradually rises to the highest from the equilibrium pressure during pressure balancing, and the pressure of the left adsorption tank gradually drops to zero from the equilibrium pressure during pressure balancing.



5, nitrogen outlet pressure indication for normal gas pressure, the use of pressure will be slightly shaken, but the change should not be too large;



6, the flow indicator of the flowmeter should be fundamentally stable, shaking should not be too large, the value of the flowmeter should not be greater than the amount of nitrogen production equipment fixed gas production; 7, the nitrogen analyzer value should not be less than the additional purity of the nitrogen production equipment, there may be a small amount of shaking, but should not shake too much.