Air compressor repair and maintenance and common problems

 Folded cleaning cartridge steps are as follows

a. Tap the two end surfaces of the cartridge in turn against a flat surface to remove the vast majority of heavy and dry gray sand.
  
b. Blow with dry air less than 0.28MPa in the direction opposite to the intake air, with the nozzle less than 25mm away from the folded paper, and blow up and down along its length.

c. If there is grease on the cartridge, it should be washed in warm water with non-foaming detergent, and the cartridge should be impregnated in this warm water for at least 15 minutes and washed with clean water in the hose, and do not use the heating method to speed up the drying.
  
d. Put a lamp inside the cartridge for inspection, and discard it if thinning, pinhole or damage is found.

Adjustment of folded pressure regulator

The unloading pressure is adjusted with the upper adjusting bolt. Turn the bolt clockwise to increase the unloading pressure, and counterclockwise to decrease the unloading pressure.

Folded cooler

The inner and outer surfaces of the tubes of the cooler should be kept clean with special attention, otherwise the cooling effect will be reduced, so they should be cleaned regularly according to the working conditions.

Folded gas storage tank/oil gas separator

Gas storage tank / oil and gas separator according to the standard manufacturing and acceptance of pressure vessels, shall not be arbitrarily modified, if modified the consequences will be very serious.

Folded safety valve

The safety valve installed on the storage tank / oil and gas separator should be checked at least once a year, and the adjustment of the safety valve should be carried out by a professional, and the lever should be pulled loosely at least once every three months to make the valve open and close once, otherwise it will affect the normal operation of the safety valve.

Folding inspection steps are as follows

a. Close the air supply valve;
  
b. Turn on the water supply;
  
c. Start the unit;
  
d. Observe the working pressure and slowly rotate the adjusting bolt of the pressure regulator clockwise, when the pressure reaches the specified value, the safety valve is not yet open or has been opened before reaching the specified value, then it must be adjusted.

Folding adjustment steps are as follows

a. Remove the cap and seal;
  
b. If the valve opens too early, loosen the lock nut and tighten the locating bolt half a turn, if the valve opens too late, loosen the lock nut about one turn and loosen the locating bolt half a turn. If the valve is opened too late, loosen the lock nut approximately one turn and loosen the locating bolt one-half turn.
  
c. Repeat the test procedure, and if the safety valve does not open at the specified pressure, adjust it again.

Folded digital thermometer experiment

Digital thermometer test method is its thermocouple and a reliable thermometer together in the oil bath, if the temperature deviation is greater than or equal to ± 5%, then this thermometer should be replaced.

Folded motor overload relay

The contacts of the relay should be closed under normal conditions and open when the current exceeds the rated value, cutting off the power to the motor.

Motor oil composition

1、Air compressor oil components lubricant base oil

Lubricant base oils are mainly divided into two categories: mineral base oils and synthetic base oils. Mineral base stocks are widely used and used in large quantities, but some applications require the use of synthetic base stocks, which has led to the rapid development of synthetic base stocks.
  
Mineral base oil is refined from crude oil. Air compressor oil composition lubricating oil base oil main production process are: normal reduced pressure distillation, solvent deasphalting, solvent refining, solvent dewaxing, white clay or hydrogenation supplement refining.
  
The chemical composition of mineral base oil includes high boiling point, high molecular weight hydrocarbon and non-hydrocarbon mixtures. The composition of air compressor oil components are generally alkanes, cycloalkanes, aromatic hydrocarbons, cycloalkyl aromatic hydrocarbons and organic compounds containing oxygen, nitrogen and sulfur and non-hydrocarbon compounds such as gums and asphaltenes.

2、Air compressor oil component additives

Additives are the essence of modern advanced lubricating oil, correctly selected and reasonably added, can improve its physical and chemical properties, give new special performance to lubricating oil, or strengthen certain performance originally possessed by air compressor oil components to meet higher requirements. According to the quality and performance required by the lubricant, careful selection of additives, careful balance and reasonable deployment are the keys to ensure the quality of the lubricant. The additives commonly used in general air compressor oil components are: viscosity index improver, pour point depressant, antioxidant, clean dispersant, friction moderator, oiliness agent, extreme pressure agent, anti-foam agent, metal passivator, emulsifier, anti-corrosion agent, rust inhibitor, emulsion breaker.

 


Post time: Aug-15-2022