Air compressor’s pressure for air discharge (kg/cm²) uses the actual pressure using as the benchmark. In addition, the pressure loss during the air flows through the cleaning system is also needed.

Actual amount of air discharge: It can be measured by using measuring instruments according to the amount of air output after the air compressing process.

Piston displacement amount: It is calculated according to theory calculations, without any data from the loss and efficiency measurements.  Generally, a phase compressor is multiplied by 0.65, while double phase compressor is multiplied by 0.8 in order to have the closest actual amount of air discharge. Therefore, there are 4 considerable factors for the theory calculation to be possible:
        (A) Current Requirement (100%)
        (B) Possible amount of pipe leakage (10%)
        (C) Future expanding plan (20%-50%)
        (D) Tolerance used (10%-30%)
As a conclusion, the amount of air discharge = (A+B+C) x (1+D). When the value of C increases, the value of D can decrease. It is noted that the standard of measurement is according to the actual amount of air discharge.

Different models of motor required different electric power, usually it can be separate in two types:
Single Phase: Suitable for 110V, 220V. For safety, below 1hp uses 110V, above 1hp but below 5hp uses 220V.
Three Phase: Suitable for large hp machines with the voltage of 220V, 380V, and 440V.

With the different design of air compressors, it can be separate as with and without oil.

With oil: Oil is used to lubricate inner part of air compressor. Although it has a rarely little oil, but it is still perfectly fine for general industry users. For some industries, it is recommended to install filter for removing large amount of oil. It is required to change the lubrication oil for the first startup after few hours. Later on, the lubrication oil should be change constantly, and not to use bad quality lubrication oil for not damaging the parts. Please refer to the “Technical Manual” for the correct use of lubrication oil and changing routine time. It is suitable for: Iron, module, and general manufacturing industries.

According to the situation, there are two options:

Portable: small air compressors are all portable with two or four wheels beneath for convenient in moving.

The following are the main purpose for cooling:

Decrease main part’s temperature for longer life span.

Decrease air discharge’s temperature for increasing performance of dryer.

Provide safe working environment, prevent from the machine overheat which may cause   accidents.

Water Cooling: cooling cycle tank is required. By using water’s flow to let cylinder and air discharge’s pipe having chemical reactions, which is high efficiency in cooldown that suits for large hp models.

Air Cooling: air that cool by fan flows to cause chemical reactions with cylinder and air discharge’s pipe is a simple design in cooldown. With its improving and better developing, both big and small hp models of cooling system is suitable.

Several noise of air compressor cause from the following reasons:

Performance of Air Frame: during the process of compressing, high speed rotating, air inlet, air discharge, air flow, and cooling by the fan.

Motor: motor or engine.

Air Frame Unbalanced: Calibration incorrect or the horizontal surface wasn’t concerned while installing.

Leakage of Air Discharge: leakage from pipe or high air pressure’s flowing could also cause noise.

Different types of air compressor also have different noise results:

Freely open reciprocating type: the noise generated by the reciprocating movement of the piston is not blocked, and is spread to the environment with sound waves. Low hp’s noise won’t affect the environment, but big hp’s noise must be treated immediately.

Tank reciprocating type: although its inner part air frame is the same as the freely open kind, but its sheet metal was customized by using high quality materials to absorb noise, prevent vibrates, and ignores sound source.

Screw type: its performing method is different comparing to reciprocating type, so the audio frequency is different. Screw type is also design like tank kind, its sheet metal was customized by using high quality materials to absorb noise, prevent vibrates, and ignores sound source.
 

Different models and different usage operate differently, so that the performance and its life span can be maximize. Using small size with air cooling as an example, there are two types of operating method:

Semi-auto: by using the automatic unloading system to operates air compressor’s light load and fully load. It is when system’s air pressure is greater than the set maximum amount, automatic unloading system drives bleed piston makes the inlet valve open mode to make it as the light load.

The following methods are somehow flexible in applying:

◆ Fully/Semi-auto choosing operation: create operating system depending on actual situation to choose operate method.

Different models of air compressor have different designs and structures; Therefore, the pressure usage, amount of air discharge, and phase of compressing is different. To make it simple, we categorize into four categories:

Low pressure with low hp, use reciprocating kind.

Models below 10hp also with no noise, turbine or tank kind mute type would suits more.

20hp and above, please use screw type or water-cooling type.