Great Plains 2SF30 Operator Manual - Manual (Page 33)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 29
2014-01-09 Table of Contents Index 155-015M-A
Acremeter Operation
Refer to Figure 24
The acremeter, located on the drill clutch shaft, counts
shaft rotations whenever the shaft is rotating - this is with
the drill lowered and in motion or during calibration crank
operation. The meter is programmed to display rotations
as acres or hectares, when using all rows,
factory-specified tires and tire inflations.
Unusual conditions and/or non-standard row spacings
can cause the acremeter tally to vary somewhat from
actual acres planted.
Normal Operating Sequence
The acremeter counts rotations during drill calibration
(and if so, can be useful for calibration, although the
meter must be on, or moved to the shaft being cranked).
1. Record the acremeter reading at the start of planting
(and after calibration). The large "12345.6" format
display is the grand total area planted since meter
installation. The smaller number in the lower left
corner is the number of revolutions per acre for
which the meter was factory-programmed. If the
display is blank, see "Dormant Display" below.
2. Lower drill and plant. Acremeter counts shaft
rotations, calculates acres or hectares, and adds to
the running grand total.
3. During planting (drill lowered and moving forward),
the display blanks (goes dormant), but area tally
continues.
4. When raised for turns, obstructions and transport,
the drill’s ground drive wheel, contact wheel or clutch
disengages the drive shaft, and the meter counts no
additional (non-planting) rotations.
5. Whenever shaft rotation stops, the LCD display
activates after 30 to 60 seconds, and remains visible
for 30 to 45 minutes.
6. At the completion of planting, record the final reading
of the grand total. If the display goes dormant before
you can read it, see "Dormant Display".
7. Subtract the reading at Step 1 from the reading at
Step 6 for the total planted in the present session.
Dormant Display
Refer to Figure 25
To conserve power, the LCD display blanks itself most of
the time. If you need to read the display after if has
"timed out" and gone dormant:
• use the calibration crank to turn the jackshaft once, or
• gently tap or wave a magnet at either of the Great
Plains logo spots on the lower region of the display. Be
careful not to scratch the window.
Figure 24
Electronic Acremeter
27378
Figure 25
Meter Display
36139