Great Plains ADC2350BE Operator Manual - Manual (Page 72)

68 ADC2350/E and ADC2350B/BE Table of Contents Index Great Plains Manufacturing, Inc.
167-085M Table of Contents Index 2012-08-01
Fan Speed Adjustment
Fan speed (rpm) is available on the seed monitor. Have
the seed monitor powered up for fan adjustments.
Refer to Figure 77
ADC2350/E only: Fan shut-off valve must be open for fan
to operate. Valve not present on model ADC2350B/BE.
Hydraulic Fan Start-Up
With the ADC2350/E fan shut-off valve open, and the
tractor at a low idle speed, energize tractor hydraulics for
fan. Lock hydraulic lever in place for continuous
operation. Refer to your tractor operator’s manual for
instructions on operating hydraulic motor.
Always engage the fan with the tractor at a low engine speed.
Engaging the fan when the tractor is at high speed may cause
fan damage.
Check that the bottom of the fan rotor rotates toward the
fan outlet port. If not, reverse the direction of the
hydraulic flow from the tractor.
Run fan for at least 15 minutes before seeding. Hydraulic
fluid must be warm before fan and wing down pressure
will operate properly.
1. Check bin-lid and meter-box seals for air leaks.
Adjust the latch or replace the seals to prevent
leakage.
Note: It only takes a very small air leak to cause large
variations in the seeding rate and pattern.
2. Watch the seed monitor and adjust fan speed by
increasing or decreasing hydraulic flow from the
tractor. Use the following guidelines and the fan
speed chart at right to properly adjust fan speed.
• Higher fan speeds improve seed distribution, but
high fan speeds also increase the chance of seed
damage and bounce.
• At first, adjust fan speed to the high end of the
range suggested in the chart at right. Watch for
excessive seed cracking and seed bounce from
the furrow, then reduce fan speed if necessary.
• Follow the chart at right as a guide. Actual fan
speeds will vary with implement width, row
spacing, seeding rates, seed weights and seed
size. Increase fan speed for heavier seeding rates
or seed. Reduce fan speed for lighter seeding
rates and seed more prone to cracking.
Figure 77
Fan Shutoff Valve (Open)
29582
Figure 78
Fan Air Pressure
26425
Recommended Fan Speeds
Seeds Fan RPM
Sunflowers 2,250 to 3,000
Wheat 3,250 to 4,000
Soybeans 2,750 to 3,500
Milo 3,250 to 4,000