1, daily maintenance

Check the oil level, check the air filter and coolant level, check the hose and all the pipe joints for leaks, check that the consumables have reached the replacement cycle, must be stopped to replace, check the host exhaust temperature, reach or approach the warning temperature, The oil cooler must be cleaned to check the differential pressure of the separator. When the pressure is above 0.6 bar (limit 1 bar) or the pressure difference begins to decrease, stop the separation core and so on.

2, monthly maintenance

Check the cooler, clean it if necessary, check all wire connections and tighten, check the AC contactor contacts, clean the surface of the motor suction port and the surface of the casing, clean the return filter, check the air compressor settings Is it consistent with the operation?

3, quarterly maintenance

Clean the main motor and fan motor, replace the oil filter, clean the cooler, check the minimum pressure valve, safety valve, and check the sensor.

4, annual maintenance

Replace the oil and oil separator filter element, replace the air filter element, oil filter, safety valve calibration, check the flexible coupling, check the cooling fan, clean the automatic drain valve, and replenish or replace the motor grease.

The daily maintenance and maintenance records of the screw air compressor can be recorded periodically or irregularly, or recorded after maintenance. Accurate records facilitate timely analysis and troubleshooting of air compressor failures. The main contents of the maintenance record are inspection, cleaning, adjustment, replenishment, replacement and corresponding time.

note

(According to equipment design, working conditions, consumables, service life, etc., the following data is for reference only)

A. When repairing and replacing the components according to the above table, it must be determined that the pressure in the compressor system has been released, separated from other pressure sources, the switch on the main circuit has been disconnected, and the safety sign that the switch is not allowed is completed.

B. The replacement time of the compressor cooling lubricant depends on the use environment, humidity, dust and air in the presence of acid and alkali gases. a. Machines using ordinary cooling oil: The new compressor should be replaced with new oil after the first 500 hours of operation, and then replaced every 2,500 hours or annually according to the normal oil change interval. b. Machines using super cooling oil: Replace every 8000 hours or every two years. Non-continuously operated air compressors should be oiled at the right time. The sealed compressor should be changed every 2 years.

C. The oil filter must be replaced after 500 hours of use for the first time, the second time after 1000 hours of use, and then every 2,500 hours of normal time.

D. When repairing and replacing the air filter or intake valve, remember to prevent any debris from falling into the machine head and close the main unit inlet during operation. After the operation is completed, it is necessary to rotate a few turns by hand in the direction of rotation of the main unit to ensure that there is no obstruction before starting the machine.

E. Check the tightness of the belt every 3000-4000 hours of operation. If the belt is loose, adjust the nut until the belt is tight and the spring acts. To protect the belt, the belt should be protected from oil contamination during the whole process. And scrapped.

F. The oil filter must be replaced at the same time each time the oil is changed.

G. Maintenance method of the motor

The environment of the motor should be kept dry frequently, the surface should be kept clean, and the air inlet should not accumulate dust, fibers and other debris. When the thermal protection and short-circuit protection of the motor continuously occur, check whether the fault is from the motor or overload, or because the protection device is set too low, and the fault can be cleared before it can be put into operation. When the motor bearing is running for 1500 ~ 2000h, the grease should be added. The bearing temperature **** does not exceed 120 °C. When the temperature is lower than 70 °C, the interval of adding grease can be extended. When filling the oil, use the grease gun, first remove the grease on the drain pipe, add new grease until the original grease is discharged from the drain hole, wipe it with a rag, and after the oil is finished, tighten the oil plug.

The daily maintenance and maintenance records of the air compressor can be recorded periodically or irregularly, or recorded after maintenance. Accurate records facilitate timely analysis and troubleshooting of air compressor failures. The main contents of the maintenance record are inspection, cleaning, adjustment, replenishment, replacement and corresponding time.