Air compressor is one of the main mechanical power equipment of many enterprises, and it is very necessary to maintain its safe operation.
1 preparation before driving
(1) Keep the lubricating oil in the oil pool within the scale range, and the grade of lubricating oil should meet the requirements.
(2) Check the amount of oil in the oiler, which should not be lower than the scale line.
(3) Before starting, turn the hand wheel and fill the cylinder with oil. Uniform and sufficient oil droplets should be seen from the oil finder.
(4) in the assembly or regular parking, the first time before starting the car must be checked, check whether there is abnormal and impact, stuck and other abnormal sound.
(5) Remove all objects that hinder the work on and near the machine, and the protective cover shall be fixed firmly.
(6) Check whether the exhaust pipe is smooth and the vent valve should be opened.
(7) In order to reduce the load when starting, the load reduction valve should be closed or the oil and water blowing valve should be opened, so that the discharge pipe is in a state of no pressure.
(8) Open the cooling water valve, the water flow should be smooth, no bubbles.
(9) Prepare for the electrical part before starting.
2 driving
(1) Switch on the current to make the air compressor run under no-load state.
(2) After normal no-load operation, gradually open the load reduction valve, close the oil and water blowing valve of the cooler at all levels, so that the air compressor enters the operation under load.
3 run
(1) Lubricating oil pressure is 1~5kg/cm < SUP > 2 < /sup >, not less than 1kg/cm < SUP > 2 < /sup >.
(2) The exhaust pressure shall not exceed 8kg/cm < sup > 2 < /sup >, otherwise the pressure regulator shall be checked.
(3) The lubricating oil of the oil pool and oiler should be within the scale range, and the oil spill does not exceed the specified range.
(4) The cooling water shall be smooth, uniform, intermittent, bubble-free, and the water temperature shall not exceed 40℃.
(5) The exhaust temperature shall not exceed 160℃, and the temperature after water cooling shall not exceed 40℃.
(6) Check whether the current, voltage and temperature of the motor are normal.
(7) Check the normal operation of all parts regularly.
(8) Often check whether the suction valve cover is hot and whether the sound of the valve is normal.
(9) Pay attention to the reliability of various protective equipment.
(10) Run for 2 hours, to open the oil and water blowing valve at all levels, each shift will be stored in the tank of oil and water discharge 1~2 times.
(11) Keep the air filter clean, should be cleaned 1 times a month.
(12) Record the operation once per hour and keep the equipment clean.
(13) Stop immediately if any of the following conditions are found during operation. (1) oil interruption; ② cooling water interruption; ③ The exhaust pressure rises suddenly, and the safety valve fails; (4) abnormal sound in air compressor or motor; (5) Abnormal conditions occur in motors or electrical equipment.
4 Normal stop
(1) Close the load reduction valve and open the coolers at all levels and the oil and water blowing valve.
(2) Turn off the power supply and stop the machine.
(3) Close the cooling water inlet valve, discharge the water in the cylinder liner and the oil-water separator of the cooler at all levels and the storage tank, and prevent freezing in winter.
(4) Release the compressed air at the exhaust pipes at all levels.
(5) After power cut off, it should be restored to the pre-change state.
(6) When the air compressor stops for more than 10 days, sufficient lubricating oil should be injected to each friction surface.
5 Safety Technology
(1) When the compressor inlet and exhaust pipes are long, they should be fixed to avoid vibration.
(2) Fasteners of gas tanks, coolers and other pressurized containers should be inspected and identified once a year.
(3) Clean the gas pipeline and valve and storage tank once every 0.5 years.
(4) Compressor and other exposed rotating parts (belt pulley, etc.) should have safety cover.
(5) Regularly check whether the grounding wire of the motor part and electrical part is in good condition.