COMPRAG ARD-1108-270 11110015 - Инструкция по эксплуатации - Страница 13

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COMPRAG Screw air compressor A-Series 

2.4 Functional description (see Fig. 2.3.1 and Fig. 2.3.2)

Air flow:

Air drawn through Air filter (4) and open Intake valve (5) into compressor Air-end (3) is compressed. 

Compressed air and oil flow into Air-Oil separation tank (6). The air is discharged via Min. 

Pressure valve (11) through Heat-exchanger (13) towards the Air Outlet Valve (20).

Oil flow:

Air pressure forces oil from the air-oil separation tank (6) through the heat-exchanger (14) 

and the oil filter (16) to the compressor air-end (3) and the lubrication points. In the air-oil 

separation tank (6), most of the oil is removed centrifugally; the rest is removed by the 

air-oil separator (8).

The oil system is fitted with a thermostatic valve (15). When the oil temperature is below 

the set-point of the thermostatic valve, the thermostatic valve shuts off the oil supply 

from oil heat-exchanger (14). The thermostatic valve starts opening the supply from heat-

exchanger (14) when the oil temperature exceeds the valve’s setting. The setting of the 
thermostatic valve depends on the model. See table Technical Data.

Cooling system:

The cooling system comprises a combined air section (13) and an oil section (14) heatex-

changer. A cooling fan, mounted in the fresh air intake section, generates the cooling air 

in order to cool the heat-exchanger..

2.5 Regulating system

Fig. 2.5 Regulating system

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