1. The main reasons for the leakage of the solenoid valve are:
a. There is slag inside the solenoid valve.
b. The coil of the solenoid valve was burned due to voltage instability.
c. There are foreign objects in the silica gel inside the one-way valve.
Solution: Open the one-way valve to clean up foreign objects, and smooth the silicone surface with emery cloth.
2. The reason for the oil spill? The product is short of oil and stuck?
a. The oil drain screw leaks oil, the cylinder gasket leaks oil, and the cylinder screw is not tightened.
b. There are air holes or trachoma in the cylinder or box.
c. Whether the oil leakage screw nut is screwed out and the rubber pad inside is damaged or squeezed into the hole.
Solution: Check the location of the oil leakage, determine the location of the oil leakage, replace/tighten the screws and apply glue or wrap the belt.
3. Oil channeling phenomenon.
a. There is oil leaking from the edge of the cylinder head, there is oil in the gas storage tank, too much oil is added, and the type of oil used is wrong. If the maintenance is not timely, the cylinder is pulled.
Solution:
a. Open the cylinder screw to check whether the piston ring is aligned.
b. Check the piston ring for wear.
c. Check the cylinder for strain.
4. Customers need to change the engine oil once a week, belt machine use: summer (L-DAA150) compressor oil. Winter (L-DAA100) compressor oil, No. 68 engine oil for direct-line machines.
5. The reason for air leakage and return air?
a. It leads to slow air supply, frequent start-up of work, waste of air source, and insufficient air consumption.
b. Locations of major air leaks: Exhaust valves, drain valves, safety valves, one-way valves, pressure regulating valves, unloading valves, pressure gauges, joints of high-pressure pipes, gas storage tanks, etc. Stomatal trachoma.
Solution:
a. Use a soapy water brush to find out where the air is leaking.
b. If the glue leaks air, unscrew the screw and wrap it with raw material tape. 704 glue or liquid oxygen glue can be screwed back.
c. After the leaked gas of the gas storage tank is released, repair the leaking position.
6. The air return of the one-way valve causes the air pressure inside the box to be too high, resulting in fuel injection.
Reasons: a. The surface of the valve core (silica gel) inside the check valve has impurities or foreign objects or is uneven.
b. The pressure switch unloading valve is damaged.
7. Causes and solutions of blowing gas?
a. Inspection method: Block the air intake hole with your hands, which is the position of the muffler. If there is gas coming out, it is blow-by.
b. It will lead to slow air supply speed, reaching a certain pressure and not being able to go up, burning the valve plate, increasing the temperature of the cylinder head, and shortening the life of the main engine
reason:
a. There are impurities under the valve plate, and the impurities cause a gap between the valve plate and the valve plate.
b. The use environment is too bad, impurities and dust enter.
c. Not installed properly.
Solution:
a. Check whether the valve plate is warped
b. Open the cylinder head to clean up the sundries and foreign objects under the valve plate.
c. Reinstall the valve plate.
8. Causes of air leakage between cylinder head, valve plate and cylinder:
a. The paper pad is broken
b. The cylinder head screws are not tight
c. The plane of the cylinder, valve plate and cylinder head is uneven
d. There are foreign objects under the paper pad
9. CBB60 is the running capacitor, and CD60 is the starting capacitor.
10. How to adjust the pressure switch:
Bedroom pressure switch adjustment steps:
a. Slotted iron screw to adjust the take-off pressure, twist forward to adjust the take-off pressure to press up, and reverse to adjust the pressure to press down
b. The black flat-blade plastic screw adjusts the reset pressure. Turning forward is to adjust the pressure up, and reverse is to adjust the reset to press down.
c. It is not recommended for customers to adjust the pressure of the air compressor leaving the factory, the service life will be shortened, and the damage is not within the scope of three guarantees.
11. The four major uses of engine oil: lubrication, sealing, cooling and noise reduction
12. The length of the power cord is about five meters (the power cord should not be too long, too thin will cause the machine to fail to start, burn out, etc.)
13. Main reasons for non-stop
a. The wiring is not connected properly, it is connected to the motor.
Solution: Connect the wires to the L1/L2/L3 of the external protector (after connecting the wires to the new machine, check whether the reverse direction is in line with the direction of the arrow on the grille, and if the direction is wrong, swap two with L1/L2/L3)
14. Does not start/difficult to start
a. The power wire connected to the air compressor is too thin, the square number is not enough, or the wire connected is too long resulting in too much loss.
b. The pressure switch is not turned on
c. Poor wire contact
Solution:
a. Replace the length of the appropriate square power lead-out wire and power cord.
b. Check whether the pressure switch is closed properly.
15. It is suitable for construction decoration, pneumatic work paint spraying and other places that do not have high requirements on the source.
16. The air compressor is an air pressure generating device, which is a conversion device that converts mechanical energy into gas pressure energy.
17. According to the working principle, it is divided into:
a. Positive displacement compressor: use variable volume to increase gas pressure
b. Dynamic compressor: convert gas kinetic energy into pressure energy, that is, convert gas velocity into pressure.
18. According to the exhaust pressure, it is divided into:
Low pressure compressor >0.2>1.0mpa
Medium pressure compressor >1.0>10mpa
High pressure compressor >10>100mpa
Ultra high pressure compressor >100mpa
