7. Service units

During the preparation of compressed air, various processes such as filtration, regulation and lubrication are carried out by individual components. The individual components are: separator/filter, pressure regulator and lubricator.

Preparatory functions can be combined into one unit which is called as ‘service unit’. Figure 6.3.10 shows symbolic representation of various processes involved in air preparation and the service unit.

 

Fig. 6.3.10 (a) Service unit components (b) Service unit symbol