Functional Description; Regulating System - Comprag FV4508 Bedienungsanleitung

2.4 Functional description (see Fig. 2.3)
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 thermo-
static 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 thermo-
static 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) heat-
exchanger. A cooling fan, mounted directly on the motor shaft, generates the cooling air in
order to cool the heat-exchanger.
2.5

Regulating system

Fig. 2.5 Regulating system
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