In order to enable the air compressor to operate normally and reliably, and to ensure the service life of the unit, a detailed maintenance plan must be established, and the personnel operation, regular maintenance, regular inspection and maintenance should be carried out to keep the air compressor unit clean, oil-free and dirt-free. Maintenance of main components is carried out according to the following table:
note:
A. According to the above table, when repairing and replacing the components, it must be determined that the pressure in the air compressor system has been released, separated from other pressure sources, the switch on the main circuit has been disconnected, and the switch is not allowed to be closed. Safety signs.
B. Compressor cooling oil replacement time depends on the use of environment, humidity, dust and air in the presence of acid and alkali gases. The newly purchased air compressor must be replaced with new oil for the first time of operation for 500 hours, and then replaced every 4,000 hours according to the normal oil change period. Machines with an annual operation of less than 4,000 hours should be replaced once a year.
C. The oil filter must be replaced after the first start-up operation for 300-500 hours, the second time after 2000 hours of replacement, and then the normal time every 2000 hours.
D. When repairing and replacing the air filter or intake valve, remember to prevent any debris from falling into the compressor mainframe. When the operation is completed, the main entrance is closed. After the operation is completed, it is necessary to manually rotate the main unit by a few turns in the direction of rotation to ensure that there is no obstruction before starting.
E. Check the tightness of the belt every 2,000 hours of operation. If the belt is loose, adjust it until the belt is tight. To protect the belt, the belt should be prevented from being scrapped due to oil contamination.
F. The oil filter must be replaced at the same time each time the oil is changed.
G. Replace the parts as much as possible with the original company parts, otherwise the matching problem will occur and the supplier will not be responsible.
Cleaning cooler
Every time the air compressor is running for about 2000h, in order to remove the dust on the heat dissipation surface, the cooler purge hole cover on the fan bracket should be opened, and the cooler should be purged with a blown air gun until the heat dissipation surface is cleaned. If the heat-dissipating surface is dirty and difficult to clean, remove the cooler, pour out the oil in the cooler and close the four inlets and outlets to prevent dirt from entering, then use compressed air to blow off the dust on both sides or use water. Rinse and finally blow dry water stains on the surface. Put it back in place.
Remember! Do not scrape off dirt with a hard object such as an iron brush to avoid damaging the surface of the heat sink.
Draining condensate
Moisture in the air may condense in the oil and gas separation tank, especially in wet weather. When the exhaust temperature is lower than the air pressure dew point or the shutdown is cooled, more condensate will be deposited. Excessive moisture in the oil will cause emulsification of the lubricating oil and affect the safe operation of the machine, such as:
1. Causes poor lubrication of the compressor main unit;
2. The oil and gas separation effect becomes worse, and the pressure difference of the oil separator becomes larger;
3. Cause the parts to rust.
Therefore, a condensate discharge schedule should be established based on the humidity.
Condensate discharge method
It should be carried out after the machine is shut down, there is no pressure in the oil and gas separation tank, sufficient cooling, and the condensed water is fully precipitated, such as before starting in the morning.
1 Unscrew the front plug of the ball valve at the bottom of the oil and gas separation tank.
2 Slowly open the ball valve to drain until the oil flows out and close the ball valve.
3 Screw on the front of the ball valve.
working principle
Safety valve
The safety valve has been set before the machine leaves the factory, and the supplier does not advocate the user to adjust the safety valve privately. If adjustments are needed, they should be carried out under the guidance of local labor safety departments or supplier maintenance personnel to avoid adverse consequences.
Maintenance advice
For general users, provide some compressor maintenance recommendations, users can refer to the implementation.
1 per week:
a. Check the unit for abnormal noise and leakage;
b Check that the meter reading is correct;
c. Check if the temperature display shows normal.
2 monthly:
a. Check if there is any rust or looseness inside the machine. If there is rust, remove the rust and oil or paint, and tighten the loose place;
b. Drain the condensate.
3 every three months:
a. Remove the dust on the outer surface of the cooler and the fan cover and fan blades;
b. Filling the lubricating oil on the motor bearing;
c. Check the hose for aging or cracking;
d. Check the electrical components and clean the electrical control box.
Compressor oil
In the operating state, the oil level of the compressor should be kept between the lowest and the highest oil level. The oil will affect the separation effect. The oil will affect the lubrication and cooling performance of the machine. If the oil level is lower than the lowest during the oil change period. The oil level should be replenished in time, by:
1 After the internal pressure is released, stop the internal pressure (confirm that the system has no pressure), and pull down the main power switch.
2 Open the fuel filler on the oil and gas separation tank and add an appropriate amount of cooling oil.
3 For the oil change time after the normal operation of the air compressor, refer to the regular maintenance table.
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