Atlas air compressor maintenance operation method

Atlas air compressor maintenance operation method  

1. Check the contact and insulation resistance of the electrical part of the Atlas air compressor:   

The electrical part of the air compressor is divided into main circuit, control circuit and signal transmission (temperature, pressure sensor) circuit. Due to the vibration generated during the operation of the air compressor, part of the wire connectors will loosen after a certain period of time. A loose wire connector will cause the unit to fail to start, and will cause serious malfunctions such as failure of protection functions , arc short circuit, and electric shock. Therefore, the electrical part should be checked regularly.   When checking, you can use the hand to swing the wires one by one, and feel the tightness of the thread head. The loose thread head should be fastened.   In addition, it is necessary to use a rocking table to check the insulation of the motor, equipment, and ground. The insulation resistance should be controlled at more than 500 megohms, otherwise drying or maintenance should be done.    

2. Replace motor grease:   

The front end and rear end of the motor can be installed under proper lubrication to ensure longevity and normal operation. Therefore, grease should be injected regularly. The type of grease should be selected according to the parameters provided by each manufacturer.    

3 , Atlas air compressor cleaning relief valve (also known as intake valve):     

3.1 relief valve composition: The relief valve consists of valve body, valve core (piston), gas manifold, solenoid valve and proportional valve (capacity regulating valve) and other components.      

3 . 2 Role of the relief valve: The relief valve mainly controls the loading of the air compressor (screw air compressor heavy loader), unloading (empty truck), proportion (capacity adjustment) control, and can also prevent the oil from Host ejection     

3 . 3 Relief Valve Disassembly: 1 Remove the hose connecting the relief valve and the air filter; 2 Remove all other components from the air pipe connected to the relief valve; 3 Remove the coil of the solenoid valve; 4 Remove the nuts assembled from the relief valve and the host And remove; 5 Move the unloading valve to the floor covered with clean paper or related clean paving.     

3 . 4 Cleaning relief valve: (Atlas air compressor cleaning agent should use soapy water, diesel, clean gasoline, Tina water, etc., should be based on the degree of dirt selected above cleaning agent, generally recommended to use soapy water or diesel for cleaning )     

3 . 4 . 1 Remove the solenoid valve: Remove the solenoid valve and check whether the O -ring and the sealing plate in the solenoid valve need to be replaced (Reminder: If you are unfamiliar with the intake valve, please also note the position of the disassembled component to avoid mistakes when reloading) , If you do not need to replace the disassembled screws, O -rings, sealing pieces, electromagnetic rods, cores and other components into a pre-prepared container, and into the appropriate cleaning agent soak (Note: in the choice of gasoline and Tianna water for Do not soak the O -rings and other rubber products for too long to avoid corrosion.    

  3 . 4 . 2 Disassemble the proportional valve: remove the proportional valve from the valve body, and then screw out the adjustment nut (best screw on the nut to do a mark, in order to avoid too much deviation when the ratio is loaded), remove the valve core, O -ring , U -rings, springs, and check if the O and U -rings need to be replaced (all seals and springs removed by the screw air compressor must be checked. This will not be repeated in the following description). The next component is soaked in detergent.     

3 . 4 . 3 Degassing manifold: remove the manifold from the valve body, and there are air holes on the four sides of the manifold (the screw air compressor has the function of dredging when the integrated gas circuit is blocked). The sealing nut is screwed out and soaked in the cleaning agent together with the manifold.     

3 . 4 . 4 Remove the relief valve spool: Use a circlip pliers to remove the retaining spring located at the joint between the valve plug and the valve body, and then use a pipe wrench to unscrew the valve core and remove the cylinder, valve disc, O -ring and U -shaped ring inside. The spring is soaked in the cleaning agent, and then the air inlet on the valve body is removed, and the entire valve body is put into the soaking. At this time, the disassembly process of the relief valve is completed.     

3 . 4 . 5 Cleaning: If the intake valve fouling is more serious, then a new cleaning agent when cleaning, washing the process should be washed after washing the parts with more dirt, washed parts rinsed with water again, In order to avoid corrosion and shorten the service life of parts, parts that are washed with clean water should be put in a clean place to dry to avoid rusting of iron-containing parts.   

When cleaning the valve plate and the place where the valve body and the valve plate contact, pay attention to the smoothness of the surface, and clean it, if necessary, replace it, otherwise it will cause the air compressor to start with a load (Atlas air compressor large machine When the belt is loaded and started, it will not start.)    

  3 . 4 . 6 Installation of components: The installation of the components is carried out according to the reverse steps of the dismantling. It should be noted that when installing the components, the position of the sealing ring and the moving components should be coated with a suitable amount of oil, so that the sealing ring can be better installed and the moving parts More flexible.    Note: Because there are many spare valve parts, if you do not remember to remember the position of each part, you can clean it after removing one part and then install the part. However, the parts should not be installed on the valve body until all the parts are cleaned. Again assembled to the valve body.     

3 . 4 . 7 Relief valve After the entire cleaning process is completed, put it aside to be loaded into the air compressor.  

4 , cleaning the minimum pressure valve (screw air compressor, also known as pressure maintenance valve):     

4 . 1 minimum pressure valve components: the minimum pressure valve from the valve body, valve core, adjusting nut, spring, sealing components and other components .

  4 . 2 The role of the minimum pressure valve: The minimum pressure valve is mainly used to establish the internal pressure of the unit to promote the circulation of the lubricant and to meet the working pressure of the relief valve. In addition, the minimum pressure valve also functions as a one-way valve to prevent the unit from operating during unloading. The compressed air in the gas tank flows back to the air compressor.     

4 . 3 The minimum pressure valve is disassembled: The structure of the minimum pressure valve is very simple. Unscrew the nut of the screw air compressor between the valve core and the valve body to remove the components. The minimum pressure valve spool of the small unit is built into the valve body. It removes all the internal components by opening the body cover.     

4 . 4 Clean the minimum pressure valve: Clean the minimum pressure valve by cleaning the relief valve.   

  4 . 5 The assembly of the minimum pressure valve: According to the disassembly of the assembly of components, due to the structure of the minimum pressure valve is very simple, the assembly process will not be described one by one, but it should be noted that if there is a U -shaped ring inside , you need to pay attention to U -shaped ring The direction.    

  4 . 6 Atlas Air Compressor minimum pressure valve After the entire cleaning process is completed, put it aside to be loaded into the air pressure tank back to the host, when the oil temperature measured by the temperature control valve temperature sensing element is higher than the action value, the temperature control valve Temperature sensing element thimble action, push the valve core to open the bypass valve of its own equipment, so that the lubricating oil enters the cooler to cool (if the temperature measured by the temperature sensing element is higher, the bypass valve is opened more), and the cooled lubricant is again Back to the host.     

6 . 3 Dismantling of temperature control valve: The surface of the screw air compressor temperature control valve has a cover, then cover with a screw hole, find a suitable nut to screw into the cover, and then use the circlip pliers to remove the fixed cover spring Then, using the pliers to pull the nut just screwed in, you can take off the lid and all the parts inside.    

6 . 4 Clean the temperature control valve: Clean all parts of the temperature control valve by cleaning the relief valve.    

6 . 5 Thermostatic valve assembly: Install the thermostatic valve according to the reverse procedure of disassembly.     

6 . 6 Screw air compressor temperature control valve After the entire cleaning process is completed, put it aside to be loaded into the air compressor.  

7 , cleaning cooler:     

7 . 1 cooler sub-cooled and water-cooled two .

7 . 2 cooler cleaning:    

7 . 2 . 1 air-cooled cooler       

1. Open the air hood to clear the cover or remove the cooling fan.       

2 , blow back the dirt with compressed air, and then take the dirt out of the hood; if dirty, you should spray some    Degreasing agent blows again. When the screw air compressor cannot be cleaned by the above method, the cooler needs to be removed, soaked or flushed with a cleaning liquid and cleaned with a brush (wire brush is strictly prohibited).      

3 , install the cover or cooling fan    

7 . 2 . 2 water-cooled cooler     

  1 , open the cooling water inlet and outlet pipes.       

2 , into the cleaning solution soaked or flushed with the pump cycle (better recoil effect).       

3 , rinse with water.      

  4 , install cooling water inlet and outlet pipes.     

When the oil cooler fouling is serious and the above method is not ideal for cleaning, you can remove the oil cooler separately, open the two end caps, and use special steel brush or other tools to remove scale. When the side of the cleaning cooler medium cannot effectively reduce the temperature, the screw air compressor needs to clean the oil side as follows:       

1 , open the inlet and outlet pipe.       

2 , into the cleaning solution soaked or flushed with the pump cycle (better recoil effect).      

3 , rinse with water.        

4. Dry with dry air or remove water with dehydrated oil.      

5 , installed in and out of the tubing  

8 , clean water separator     

Atlas air compressor water and gas separator structure is similar to oil and gas tanks, inlet design by the wall, solid into a centrifugal force, due to the weight of water and gas, it can effectively separate the moisture in the compressed air.    

Water and gas separator cleaning: open the water separator cover, you can use cleaning agent infiltration bubble cleaning.

  9. Correct all parameters     

After all the above components have been cleaned and dried, they will be installed in the air compressor. After all components are installed in the air compressor, they must be checked again for omissions, and tools used in the installation should be cleaned.    

The operating parameters of the air compressor can be adjusted according to the following data:    

1 , Atlas air compressor before starting the preparation:    

  1 . 1 belt (coupling) correction: If the air compressor is a belt drive, then the tightness of the belt should be between 10 ~ 20 mm . If the air compressor is the coupling drive, after the installation should be hand drive motor And the host and see the balance when the coupling rotates. The coupling of the screw air compressor basically uses elastic couplings, which can be ignored when the deviation of the solid balance is small.     

1 . 2 Atlas air compressor host steering correction: If the main power is removed during the maintenance process, the motor should be re-inverted after the power is switched back on. The motor's steering should be based on the host's steering. The host's correct steering should be checked. Turn icon on the host .      Correction method: Exchange any two power lines in three-phase power.    

  2 , loading, unloading, proportional value effect: set the three parameters, you should first determine the unloading value, unloading value should be based on the rated pressure of the air compressor and the pressure required to use the gas end to determine, determine the unloading value , and then set the load value, the pressure difference between the two should be between 0.1 ~ 0.2Mpa , set the unloading and loading values, the final set ratio, the value of the ratio should be set in the middle of the unloading value and load value, screw air pressure Machine example: If a factory needs air compressor air supply pressure 0.8Mpa , and the gas supply requirements are relatively stable, you should set the following three parameters: unloading pressure setting 0.8Mpa , loading pressure setting 0.65Mpa , proportional control pressure Set between 0.73~0.75Mpa .   

Atlas air compressor calibration method: set this parameter in the microcomputer controller (such as the air compressor control using the button control, the loading and unloading parameters should be adjusted from the pressure switch, the proportional value should be on the relief valve Adjust the value at the adjusting nut of the proportional valve).  

3 , the unit pressure effect is positive: the unit internal pressure should be between 0.2 ~ 0.45Mpa .    

  Calibration method: The pressure value should be performed during the unloading operation of the unit, and the value of the value should be adjusted on the adjustment nut of the minimum pressure valve. To facilitate reading the set value, the pressure detection point should be taken before the minimum pressure valve and install the pressure. Table (some microcomputer controllers have internal pressure parameter display function, if there is no such function, a pressure gauge should be installed before the minimum pressure valve).    4 , the effect of high temperature protection value is: screw air compressor normal work, the temperature should be between 65 ~ 98 °C . Automatic temperature protection shutdown temperature not exceeding 105 ℃.