I have a 55KW screw air compressor that is difficult to start

Start-up difficulties only indicate one problem: the load is too great.

1. The viscosity of lubricating oil increases in winter.

When starting, you can jog about 3 times. Press the start button, the unit is running, after 3-5 seconds, directly press the emergency stop, and so on, and see if the load is not big when starting, you can start it directly.

2. The voltage drop of the power grid is severe.

The power supply network may have a strong voltage drop when the unit starts, such as when the unit is shut down, you measure it is 380V, but it may not even be 330V when it starts, you can use a clamp ammeter to see what the starting current is when you start it again.

Since the unit is new, the problem itself should not be big, such as bearings, etc. should be good.

Main Failure Causes:

1. The F21 overload relay is aging, poor contact and damaged.

2. Q15 overload relay aging, poor contact and damage.

3. F21 Q15 relay aging, poor contact and damage.

4. Corner connector failure (aging arcing).

5. Computer failure (aging).

6. The solenoid valve is damaged.

7. The intake valve cannot be opened.

8. The oil-gas separator is blocked.

9. The aftercooler is blocked.

10. The minimum pressure valve is stuck.

11. The motor bearing is damaged.

12. The three-phase voltage is too low or unbalanced.

13. The motor cooling fan is damaged or the heat dissipation is poor.

14. The rotor is stuck.

15. The rotor crank is heavier.

16. There is no grease on the motor bearing.

17. The three-phase insulation is too low.

18. Poor insulation to the ground.

19. The line is aging and the terminal is scorched.

Which brand of machine? In Hunan can help you get it done.

I can't say, I can help you see it near Nanjing, I don't know if your company is **?

After the screw air compressor reaches the set value, the motor does not stop and does not dry but closes the intake valve, and when the set unloading pressure is reached in this working state, it is automatically unloaded. When the pressure drop is lower than the loading pressure, the intake valve is automatically opened to load the operation. This is the normal working condition of a screw air compressor.

When you reach the upper limit of the pressure, you will stop running, and if the pressure is lower than the pressure, the lower limit of the pressure will be automatically started and loaded, which is the general working mode of the piston air compressor.

Is it to load pressure all the time, or is it not to stop without loading?

What should I do if the voltage of the screw empty ant and the skin press is more than 420V, and the voltage is high and cannot be started? Hello dear, the voltage is too high to start because the manufacturer has set the voltage protection! In order to protect the safety of your equipment, the best way to return is to reduce the voltage of the factory transformer voltage mask, so that it can be started.

The screw air compressor starts at a low temperature because the temperature is too low.

Solution: Keep the operating temperature of the unit above 0, if conditions permit, you need to put the air compressor indoors or set up a tent for the air compressor as much as possible, and take some warm measures to increase the indoor ambient temperature to prevent the temperature from being too low to start, and secondly, it can also improve the air quality of the air inlet of the air compressor.

You can also choose low-temperature resistant fully synthetic engine oil, in winter, it is recommended to choose low-temperature resistant RCHBW46, RCHBW32 fully synthetic lubricating oil, ** although more expensive than semi-synthetic oil, but there will be no problem that the head is locked and cannot be turned on. In order to return the lubricating oil to normal temperature, when changing the oil, you can start the air compressor first and run it for one hour.

The weather has been cold recently, so it is recommended to start the air compressor first. Warm up. In order to avoid the internal oil of the machine from freezing, start it a few more times and then turn it on

Summary. Hello, dear, happy to answer for you, how to deal with it:

1. Replace the fuse with a new one;

2. Check and calibrate the relay;

3. Check the repair start button after the power supply is normal;

4. Check the power supply;

5. Overhaul and eliminate motor faults;

6. Check the cause of body failure and eliminate it;

7. Check the power supply and motor.

The screw air compressor stops for too long without load, but cannot be started.

Dear, hello, I am happy to answer for you, treatment methods: 1. Replace the fuse with a new one; 2. Check and calibrate the relay; 3. Check the repair start button after the power supply is normal; 4. Check the power supply; 5. Overhaul and eliminate motor faults; 6. Check the cause of body failure and eliminate it; 7. Check the power supply and motor.

Dear, hello, I am happy to answer for you, treatment methods: 1. Replace the fuse with a new one; 2. Check and calibrate the relay; 3. Check the repair start button after the power supply is normal; 4. Check the power supply; 5. Overhaul and eliminate motor faults; 6. Check the cause of body failure and eliminate it; 7. Check the power supply and motor.

I hope the above is helpful to you If you are satisfied with me, please give me a thumbs up.

The 15kw screw air compressor starts only 13kw workmanship, why is there a lack of pressure if the power does not go up?

Kiss! Hello, happy to answer your <>

The pro-15kw screw air compressor starts only 13kw work, why the power does not go up and the reason for the lack of pressure is as follows: reason 1: the gas consumption at the air end exceeds the gas production of the air compressor, the air compressor selection is small, the gas port is increased or the pipeline leaks.

Solution: Add new air compressor equipment to cause 2: the intake valve is faulty (insufficient valve opening leads to insufficient air intake); Workaround:

Remove the intake valve for maintenance (add some butter lubrication to the mushroom cover rod), replace or repair. The volume control valve is set too low (disc inlet valve failure); Workaround: Disable the tolerance function so that it remains loaded.

Re-set the air supply of the regulator and adjust the height of the piston position to increase the suction volume. Readjust control settings to reduce the capacity process. Reason three:

Severe blockage of the air cleaner leads to insufficient air suction; Solution: Replace the air cleaner with a new one. Reason 4:

The valve is not completely opened, or the gas line is blocked; Solution: Check whether the pressure situation in all parts of the air compressor is normal and whether there are foreign objects blocking the gas pipeline. Hope mine can help you <>

Do you have any other questions?

Summary. Hello, I have seen your question and am sorting out the answer, please wait for a while The reason why the screw air compressor cannot be started and how to deal with it.

Hello, I have seen your question and am sorting out the answer, please wait a while Hello, 1If the air compressor is in star-delta start-up mode, then you need to check whether the start-up mode in the air compressor controller is set to star-delta start. 2.

Check whether the contactor is stuck, and whether it can achieve normal switching. 3.Check the circuit part to ensure that the entire circuit part is normal and the controller has no alarm fault.

4.Of course, you have to make sure that the screw host is not stuck.

What if it is Article 4.

If it gets stuck, you must ask a maintenance master to repair it.