Comprag 14310000, Operating Manual

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12 Version 2.2
The compressed air cools to dew-point +3°С by means of heat exchange. The water vapour
present in the compressed air is condensed. The condensate formed is extracted by the
condensate drain valve (9). Hot refrigerant enters the suction line of the compressor (1)
from the evaporator (2) and the cycle repeats itself. In order to stabilize the pressure of the
refrigerant in the condenser (3), a pressure relay (8) is installed, which controls function of
the fan (4). If the pressure in the evaporator (2) drops (insufficient quantity of compressed
air enters the dryer, no-load operation) a hot gas bypass valve is activated and it allows
pressure in the evaporator to drop lower than the defined level.
2.4 Conversion table of performance for different
operating conditions
RDX refrigerated dryers are designed in conformity with ISO 7183 under standard operat -
ing conditions: working pressure 7 bar, ambient tempe25°C, compressed air inlet
tempe35°C.
Any deviation from standard conditions requires dryer size adjustments.
Use Correction Factor tables to help determine dryer size.
Maximum working pres-
sure, MPa
0 0,1 0,2 0,4 0,6 0,7 0,8 1,0 1,2 1,4 1,6
F1 X X X 1,25 1,06 1,00 0,96 0,90 0,86 0,82 0,8
Maximum inlet temperature of compressed air,
0
C +30 +35 +40 +45 +50 +55
F2 0,85 1,00 1,18 1,39 1,67 2,00
Ambient Temperature, °C +20 +25 +30 +35 +40 +45
F3 0,92 1,00 1,07 1,14 1,22 1,3
Capacity = Capacity at standard operating conditions x F1 x F2 x F3