40 www.parker.com/gsfe Modular Aluminium Compressed Air Dryers OFAS HL Large Flow Heatless Adsorption Dryers CFOD - Correction Factor Outlet Dewpoint Outlet Dewpoint °C -20 -40 -70 °F -4 -40 -100 Correction Factor 0.91 1.00 1.43 CFMIT - Correction Factor Maximum Inlet Temperature Maximum Inlet Temperature °C 25 30 35 40 45 50 °F 77 86 95 104 113 122 Correction Factor 1.00 1.00 1.00 1.04 1.14 1.37 CFMAT - Correction Factor Maximum Ambient Temperature Maximum Ambient Temperature °C 25 30 35 40 45 50 °F 77 86 95 104 113 122 Correction Factor 1.00 1.00 1.00 1.00 1.00 1.00 CFMIP - Correction Factor Minimum Inlet Pressure Minimum Inlet Pressure barg4 5 6 7 8 9 10111213 psi g 58 73 87 100 116 131 145 160 174 189 Correction Factor 1.60 1.33 1.14 1.00 0.89 0.80 0.73 0.67 0.62 0.57 Product Selection and Correction Factors For correct operation, compressed air dryers must be sized for the maximum (summer) inlet temperature, maximum (summer) ambient temperature, minimum inlet pressure, required outlet dewpoint and maximum flow rate of the installation. Flow Rates Model Pipe Size Inlet Flow Rate L/s m3/min m3/hr cfm OFAS HL 100 2" 113 6.81 408 240 OFAS HL 110 2" 170 10.22 612 360 OFAS HL 120 2 " 213 12.75 765 450 OFAS HL 130 2 " 283 17 1020 600 OFAS HL 140 2 " 354 21 1275 750 OFAS HL 150 2 " 425 26 1530 900 OFAS HL 160 3" 496 30 1785 1050 OFAS HL 170 3" 567 34 2040 1200 2 x OFAS HL 140 2 " 708 43 2550 1500 2 x OFAS HL 150 2 " 850 51 3060 1800 2 x OFAS HL 160 3" 992 60 3570 2100 2 x OFAS HL 170 3" 1133 68 4080 2400 3 x OFAS HL 150 2 " 1275 77 4590 2700 3 x OFAS HL 160 3" 1488 89 5355 3150 3 x OFAS HL 170 3" 1700 102 6120 3600 To select a dryer, first calculate the Minimum Drying Capacity (MDC) using the formula below then select a dryer from the flow rate table above with a flow rate equal to or above the MDC. Minimum Drying Capacity (MDC) = Max System Flow x CFMIT x CFMAT x CFMIP x CFOD Stated flows are for operation at 7 bar (g) (102 psi g) with reference to 20°C, 1 bar (a), 0% relative water vapour pressure. For flows at other pressures, apply the correction factors shown below. Dryer Performance Dryer Models Dewpoint (Standard) ISO 8573-1:2010 Classification (Standard) Dewpoint (Option 1) ISO 8573-1:2010 Classification (Option 1) Dewpoint (Option 2) ISO 8573-1:2010 Classification (Option 2) °C °F °C °F °C °F OFAS HL 100 - OFAS HL 170 -40 -40 Class 2:2:0 -70 -100 Class 2:1:0 -20 -4 Class 2:3:0 ISO 8573-1 Classifications when used with Parker OIL-X pre/post filtration. Technical Data Dryer Models Minimum Operating Pressure Maximum Operating Pressure Minimum Operating Temperature Maximum Operating Temperature Maximum Ambient Temperature Electrical Supply (Standard) Electrical Supply (Optional) Thread Type Noise Level bar g psi g bar g psi g °C °F °C °F °C °F dB(A) OFAS HL 100 - OFAS HL 170 5 73 13 190 5 41 50 122 55 131 100-240V (+/-10%) 1ph 50/60Hz - BSPP <75
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