Common faults and solutions of Atlas air compressors:

1. The unit pressure is low

The reasons for this shortcoming are:

The actual gas consumption is greater than the output gas volume of the unit;

Disadvantages of screw air compressor deflation and intake valve (cannot be closed during loading);

The transmission system is abnormal, the ambient temperature is too high, and the air filter is blocked;

Load solenoid valve (1SV) shortcomings; the minimum pressure valve is stuck; the user pipeline network has leakage;

The shortcomings of screw air compressors such as pressure sensors, pressure gauges, and pressure switches will lead to low unit pressure;

The pressure sensor or pressure gauge input hose is leaking;

2. The fan motor is overloaded and the fan is deformed;

The reasons for this shortcoming are:

Disadvantages of fan motor;

Disadvantages of fan motor thermal relay (aging);

loose wiring;

The cooler is clogged;

Exhaust resistance is large.

3. The oil consumption of the unit is large or the oil content of the compressed air is large

The reasons for this shortcoming are:

Due to too much coolant, the correct position should be checked when the unit is loaded, and the oil level should not be higher than half at this moment;

The blockage of the oil return pipe will also constitute the disadvantage of the screw air compressor;

If the device of the oil return pipe does not meet the requirements, the screw air compressor will consume too much oil;

The exhaust pressure is too low when the unit is working;

The splitting of the oil separation core will lead to the shortcomings of the screw air compressor;

The internal partition of the cylinder is damaged;

Coolant deterioration or extended use.

4. The unit current is large

The reasons for this shortcoming are:

voltage is too low;

loose wiring;

The unit pressure exceeds the additional pressure;

The oil separation core is blocked;

Contactor shortcomings;

Host disadvantages;

Disadvantages of the main motor;

5. The exhaust temperature of the unit is high (over 100°C)

The reasons for this shortcoming are:

Unit coolant level is too low;

The oil cooler is dirty. How to judge whether the cooler is dirty? It mainly depends on the temperature difference between the oil inlet temperature and the oil outlet temperature. The normal temperature difference is between 20 and 30 degrees. It can be dried with compressed air. If the inside of the radiator cannot be blown off, you need to use a professional cleaning agent to clean it. If the inside of the radiator is blocked, you need to use it;

The clean water pump is cycled for cleaning, and the cleaning time depends on the situation;

If the water-cooled radiator is blocked, the best way is to remove the front and rear covers and use iron bars to clean the inside of the copper pipes;

The blockage of the oil filter core will also cause the shortcomings of the screw air compressor;

The oil-cut solenoid valve is not energized or the coil is damaged or the solenoid valve diaphragm is split or aged;

The oil-cut solenoid valve generally appears in the old models;

Disadvantages of cooling fan motor;

The exhaust duct is not dredged or the exhaust resistance (back pressure) is large;

The ambient temperature is outside the specified range (38°C or 46°C).

6. The exhaust pressure of the unit is too high

The reasons for this shortcoming are:

Disadvantages of intake valve;

Disadvantages of hydraulic cylinder;

Load solenoid valve (1SV) shortcomings;

The pressure setting is too high;

Pressure sensor shortcomings (Intellisys control unit);

Pressure gauge shortcomings (relay control unit);

Pressure switch shortcomings (relay control unit).

7. The unit cannot be started

The reasons for this shortcoming are:

The fuse is broken;

The temperature switch is broken;

loose wiring;

Main motor thermal relay action;

Fan motor thermal relay action;

Transformer is broken;

Intellisys no power input (Intellisys control unit);

Intellisys Controller Disadvantages.

8. Disadvantages of Atlas air compressors: large current or tripping when the unit starts

The reasons for this shortcoming are:

User air switch problem;

The input voltage is too low;

Star-delta conversion distance time is too short (should be 10~12 seconds);

Hydraulic cylinder shortcomings (no reset);

Intake valve defects (too much opening or stuck);

loose wiring;

The defects of the main motor and the main engine will lead to the defects of the entire screw air compressor;

1TR time relay is broken (relay control unit)

Common shortcomings of air compressors - internal repair materials

9. Because the rotor outlet temperature is too high

Possible cause of failure:

1) The oil level is too low

2) The cooler is blocked

3) The expansion slot has hot air return

4) Lack of cooling air volume

5) Thermostatic valve stuck

6) Poor flow of cooling water (negative pressure)

7) The cooling water inlet temperature is too high

8) The oil cut-off valve is stuck 9) The oil return pipe is blocked

10) The pressure difference of the oil and gas separator is too large

11) After cooler blocked

12) The oil filter is clogged

13) Air filter clogged

14) There is a problem with the rotor

15) Oil cooler blocked

16) The unloading valve piston is damaged and stuck

17) The minimum pressure valve is stuck 18) The hose is leaking and blocked

10. Motor overload

1) F21 overload relay aging, poor contact, damaged

2) Q15 overload relay aging, poor contact, damaged

3) The normally closed corner point of the F21.Q15 relay is disconnected

4) Disadvantages of angle connector (aging arc)

5) Computer shortcomings (aging)

6) Solenoid valve is damaged

7) The intake valve cannot be opened

8) The oil and gas separator is blocked

9) After cooler blocked

10) The minimum pressure valve is stuck

11) The motor bearing is damaged

12) Three-phase voltage is too low or unbalanced

13) The motor cooling fan is damaged or has poor heat dissipation

14) Rotor stuck

15) Convey the sub-crank is heavier

16) The motor bearing is not greased

17) Poor ground insulation

18) Three-phase insulation is too low

19) Line aging, terminal burnt

11. What are the reasons for the oil running of the air compressor?

1) The oil level is too high, and the injected oil is too much

2) The oil return pipe is blocked

3) The oil return pipe device does not meet the requirements (distance from the bottom part of the oil separate core)

4) The exhaust pressure is too low when the unit is working

5) The inner partition of the cylinder is damaged

6) The unit has oil leakage

7) The oil is not correct, and many bubbles occur

8) Oil deterioration may be used beyond the shelf life

9) The oil that is screwed outside, if the O-ring of the core tube is not sealed, it will also run out of oil

10) If the unit has an oil return check valve, the loss of control of the check valve will cause the oil to flow back to the oil after the unit is shut down, and the oil will run off when it is started again.

11) Damage and split of oil separator

12. Reasons for the high oil content of the compressed air of the screw air compressor

1) The quality of the oil and gas separator is poor

2) The oil return pipe or the oil return check valve is blocked

3) The opening pressure of the pressure maintaining valve is too low

4) The operating pressure is too low

5) The quality of the oil appears foamy

The common pressure to keep the hair set at greater than or equal to 0.40Mpa

The oil and gas separation core is best to use the director. Is there any deviation in the position of the oil return pipe? For the external one, check the oil return pipe and filter screen or the oil return check valve.

If the pressure of the air compressor is kept too high, the oil content of the compressed air will also be high, which often occurs.

13. Why should lubricating oil be replaced on time?

After the lubricating oil is used for a certain period of time, the following factors will affect the quality of the oil, so it needs to be replaced on time:

1) The contact surface resists the falling metal chips due to wear

2) Dust and other hard particles brought in by the air

3) There is no careful and clear molding sand on the casting

4) The paint layer on the parts is peeled off

5) The lubricating oil produces moisture during the cooling process, which makes the oil degenerate

6) The temperature and other influences of lubricating oil in circulating lubrication gradually reduce the function of lubricating oil

The above-mentioned impurities are easy to form abrasive paste analogs in the lubricating oil, pollute the lubricating oil, and greatly accelerate the abrasion of the machine's contact surface. Compressor oil: If there is no inspection equipment and cannot be inspected, change the oil every 2000~3000 hours, and carefully clean the oil supply equipment and each lubrication point.

The above are the common faults and causes of the use of Atlas air compressors. According to each different situation, the elimination method can be used to deal with them. After finding the specific reasons, the problem can be easily dealt with.