1. The unit has high fuel consumption or the compressed air contains high oil content;
2. The unit pressure is low;
3. The fan motor is overloaded;
4. The current of the unit is large;
5. The exhaust temperature of the unit is high (more than 100 °C);
6. The exhaust pressure of the unit is too high;
7. The unit cannot start;
8. The current is high or the unit trips when it starts.
Maintenance
1. Adjustment of the pressure regulator of the air compressor
Use the upper adjusting bolt to adjust the unloading pressure. Turn the bolt clockwise to unload the pressure. Increase, counterclockwise rotation to reduce unloading pressure.
2. Air filter
The dust in the inhaled air is blocked in the filter to prevent premature wear of the compressor and blockage of the oil separator. It is usually run for 1,000 times The filter element needs to be replaced after an hour or a year. In dusty areas, the replacement interval should be shortened. The machine must be shut down during filter maintenance to reduce downtime. It is recommended to replace it with a new or cleaned spare filter element.
3. Cooler
Special attention should be paid to keeping the outer surface of the cooler tube clean, otherwise the cooling effect will be reduced. It should be cleaned regularly according to the working conditions.
4. Gas storage tanks and oil and gas separators
Gas storage tanks and oil and gas separators shall be manufactured and accepted according to pressure vessel standards and shall not be modified arbitrarily.
5. Safety valve
The safety valve installed on the gas storage tank and oil and gas separator should be inspected at least once a year. A professional should be responsible for adjusting the safety valve at least every three months. It is necessary to loosen the lever once to open and close the valve once to ensure that the safety valve can work normally.
6. Digital display thermometer experiment
The test method of digital display thermometer is to put its thermocouple and a reliable thermometer into the oil bath together. If the temperature deviation is greater than or equal to ±5, The thermometer should be replaced.
7. Motor overload relay
Under normal circumstances, the contacts of the relay should be closed. When the current exceeds the rated value, it will open and cut off the motor power.
Extended information
The basic structure of a screw air compressor: In the body of the compressor, a pair of mutually meshing spiral rotors are arranged in parallel, usually with a convex shape outside the pitch circle. The toothed rotor is called a male rotor or male screw.
The rotor with concave teeth in the pitch circle is called a female rotor or a female screw. Generally, the male rotor is connected to the prime mover. The male rotor drives the female rotor to rotate the last pair of bearings on the rotor to achieve axial direction. positioning and withstand axial forces in the compressor. Cylindrical roller bearings at both ends of the rotor position the rotor radially and withstand radial forces in the compressor.
At both ends of the compressor body, openings of a certain shape and size are provided. One is for suction and is called the air inlet; the other is for exhaust and is called the exhaust port.
Baidu Encyclopedia-Screw Air Compressor
Baidu Encyclopedia-Screw Air Compressor