65
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
*Motor drive range: 685 to 935 rpm. All other rpms require field-supplied
drive.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
3. See page 74 for General Fan Performance Notes.
580F090,091 (71/2 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
2250 505 0.52 484 586 0.7 3 681 657 0.97 901 722 1.22 1142 782 1.50 1403
2300 513 0.55 509 592 0 .76 7 08 663 1.00 931 727 1.26 1174 787 1.54 1437
2400 527 0.60 561 605 0 .82 7 66 674 1.07 993 738 1.33 1241 796 1.62 1508
2500 543 0.66 617 618 0 .89 828 686 1.14 1060 748 1.41 13 12 806 1.70 1583
2550 550 0.69 647 625 0 .92 860 692 1.17 1095 754 1.45 13 49 811 1.74 1623
2600 558 0.73 677 632 0 .96 894 698 1.21 1131 759 1.49 13 88 816 1.78 1664
2700 574 0.80 742 645 1 .03 964 710 1.29 1207 770 1.58 14 69 826 1.88 1749
2800 589 0.87 811 659 1.11 1039 723 1.38 1287 7 82 1.67 1554 837 1.97 1839
2900 605 0.95 885 673 1 .20 1119 736 1.47 1372 794 1.76 1644 848 2.07 1933
3000 621 1.03 963 688 1.2 9 1204 749 1.57 1463 8 06 1.87 1740 859 2.18 2033
3100 637 1.12 1046 702 1.39 1293 762 1.67 1558 818 1.97 1840 871 2.29 2139
3200 654 1.22 1135 717 1.49 1388 776 1.78 1658 831 2.09 1946 — — —
3300 670 1.32 1228 732 1.60 1488 789 1.89 1764 843 2.21 2057 — — —
3400 686 1.42 1328 747 1.71 1593 803 2.01 1876 856 2.33 2174 — — —
3500 703 1.54 1433 762 1.83 1705 817 2.14 1993 — — — — — —
3600 720 1.66 1543 777 1.95 1822 832 2.27 2116 — — — — — —
3700 736 1.78 1660 793 2.09 1944 — — — — — — — — —
3750 745 1.85 1721 801 2.15 2008 — — — — — — �� — —
580F090,091 (71/2 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
2250 838 1.81 1683 891 2.12 1981 — — — — — — — — —
2300 842 1.84 1719 895 2.17 2019 — — — — — — — — —
2400 851 1.92 1793 903 2.25 2097 — — — — — — — — —
2500 860 2.01 1873 911 2.34 2180 — — — — — — — — —
2550 865 2.05 1914 916 2.38 2223 — — — — — — — — —
2600 869 2.10 1957 — — — — — — — — — — — —
2700 879 2.19 2046 — — — — — — — — — — — —
2800 889 2.29 2140 — — — — — — — — — — — —
2900 899 2.40 2239 — — — — — — — — — — — —
3000 ———————————————
3100 ———————————————
3200 ———————————————
3300 ———————————————
3400 ———————————————
3500 ———————————————
3600 ———————————————
3700 ———————————————
3750 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
580F036-151