Case SDX30 - Setting the Fan Speed - Concord Air Systems

SECTION 6 - AIR SYSTEM SERVICE
page 6-7
SETTING THE FAN SPEED - CONCORD AIR SYSTEMS
IMPORTANT: Fan speed charts have been calculated to provide a starting point only! Conditions such as
humidity, type of fertilizer, % of the rate that is fertilizer, hose routings, temperature, etc. will
affect the way the product moves through the air stream.
kg/ha 33.63 67.26 100.9 134.5 168.2 201.8 235.4 269 302.7 336.3 369.9 403.6 437.2 470.8 504.5
km/hr
6.4
kg/min 3.266 6.532 9.798 13.06 16.33 19.6 22.86 26.13 29.39 32.66 35.92 39.19 42.46 45.72 48.99
Fan Speed 2900-3200 3400-3800 3600-
4000
3800-4200 4000-4400 4200-
4600
4400-
4800
4400-
4800
8.0
kg/min 4.082 8.165 12.25 16.33 20.41 24.49 28.58 32.66 36.74 40.82 44.91 48.99 53.07 57.15 61.24
Fan Speed 2900-3200 3400-3800 3800-4200 4000-
4400
4200-4600 4400-
4800
4600-
5000
4800-
5200
5000-
5400
9.7
kg/min 4.899 9.798 14.7 19.6 24.49 29.39 34.29 39.19 44.09 48.99 53.89 58.79 63.68 68.58 73.48
Fan Speed 2900-3200 3400-3800 3800-4200 4000-
4400
4200-
4600
4400-
4800
4600-
5000
4800-
5200
5000-
5400
5400-5900
11.3
kg/min 5.715 11.43 17.15 22.86 28.58 34.29 40.01 45.72 51.44 57.15 62.87 68.58 74.3 80.01
Fan Speed 2900-3200 3200-
3600
3400-
3800
3800-4200 4200-
4600
4400-
4800
4600-
5000
4800-
5200
5000-
5400
5400-5900 5600-
6000
12.9
kg/min 6.532 13.06 19.6 26.13 32.66 39.19 45.72 52.25 58.79 65.32 71.85 78.38 Not Recommended
Fan Speed 2900-3200 3400-
3800
3600-
4000
3800-
4200
4200-
4600
4400-
4800
4600-
5000
4800-
5200
5200-
5600
5400-
5900
5600-
6000
Metric Rates - Setting the Fan Speed
lbs/ac 30 60 90 120 150 180 210 240 270 300 330 360 390 420 450
mph
4
lbs/min 7.2 14.4 21.6 28.8 36 43.2 50.4 57.6 64.8 72 79.2 86.4 93.6 100.8 108
Fan Speed 2900-3200 3400-3800 3600-
4000
3800-4200 4000-4400 4200-
4600
4400-
4800
4400-
4800
5
lbs/min 9 18 27 36 45 54 63 72 81 90 99 108 117 126 135
Fan Speed 2900-3200 3400-3800 3800-4200 4000-
4400
4200-4600 4400-
4800
4600-
5000
4800-
5200
5000-
5400
6
lbs/min 10.8 21.6 32.4 43.2 54 64.8 75.6 86.4 97.2 108 118.8 129.6 140.4 151.2 162
Fan Speed 2900-3200 3400-3800 3800-4200 4000-
4400
4200-
4600
4400-
4800
4600-
5000
4800-
5200
5000-
5400
5400-5900
7
lbs/min 12.6 25.2 37.8 50.4 63 75.6 88.2 100.8 113.4 126 138.6 151.2 163.8 176.4
Fan Speed 2900-3200 3200-
3600
3400-
3800
3800-4200 4200-
4600
4400-
4800
4600-
5000
4800-
5200
5000-
5400
5400-5900 5600-
6000
8
lbs/min 14.4 28.8 43.2 57.6 72 86.4 100.8 115.2 129.6 144 158.4 172.8 Not Recommended
Fan Speed 2900-3200 3400-
3800
3600-
4000
3800-
4200
4200-
4600
4400-
4800
4600-
5000
4800-
5200
5200-
5600
5400-
5900
5600-
6000
Imperial Rates - Setting the Fan Speed