42 www.parker.com/gsfe Modular Aluminium Compressed Air Dryers Product Selection and Correction Factors 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 LE 100 - OFAS LE 170 5 73 13 190 5 41 50 122 55 131 400V +/-10% 3ph 50Hz 460V +/-10% 3ph 60Hz BSPP <75 Flow Rates Model Pipe Size Inlet Flow Rate L/s m3/min m3/hr cfm OFAS LE 100 2" 113 6.81 408 240 OFAS LE 110 2" 170 10.22 612 360 OFAS LE 120 2 " 213 12.75 765 450 OFAS LE 130 2 " 283 17 1020 600 OFAS LE 140 2 " 354 21 1275 750 OFAS LE 150 2 " 425 26 1530 900 OFAS LE 160 3" 496 30 1785 1050 OFAS LE 170 3" 567 34 2040 1200 2 x OFAS LE 140 2 " 708 43 2550 1500 2 x OFAS LE 150 2 " 850 51 3060 1800 2 x OFAS LE 160 3" 992 60 3570 2100 2 x OFAS LE 170 3" 1133 68 4080 2400 3 x OFAS LE 150 2 " 1275 77 4590 2700 3 x OFAS LE 160 3" 1488 89 5355 3150 3 x OFAS LE 170 3" 1700 102 6120 3600 Vacuum Pump Part Number and kW Vacuum Pump 50Hz/60Hz kW @ 50Hz kW @ 60Hz HLVAP-OL-02-100 3 3.6 HLVAP-OL-02-110 3 3.6 HLVAP-OL-02-120 4 4.8 HLVAP-OL-02-130 5.5 6.6 HLVAP-OL-02-140 5.5 6.6 HLVAP-OL-02-150 7 8.4 HLVAP-OL-02-160 8.5 10.2 HLVAP-OL-02-170 9.5 11.4 Dryer and vacuum pump to be ordered separately. HLVAP-OL-02-100 to HLVAP-OL-02-140 = Single Pump HLVAP-OL-02-150 to HLVAP-OL-02-170 = Duplex Pump (Duplex = 2 x pumps supplied on frame) Multi-bank dryer installations require multiples vacuum pumps. For example, 3 x OFAS LE 170 requires 3 x HLVAP-OL-02-170 pumps or alternatively consider connection to a centralised vacuum system. 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. 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 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. 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 OFAS LE Large Low Energy Flow Heatless Adsorption Dryers 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 LE 100 - OFAS LE 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.
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