Great Plains 800 Operator Manual - Manual (Page 26)

22 800 Table of Contents Index Great Plains Manufacturing, Inc.
175-057M Table of Contents Index 2011-10-25
Acremeter Operation
The acremeter counts shaft rotations whenever the shaft
is rotating - normally this is only with the drill lowered and
in motion. The meter is programmed to display rotations
as acres or hectares, when using all rows, factory-
specified tires and tire inflations.
Note: Unusual conditions and/or non-standard row
spacings can cause the acremeter tally to vary
somewhat from actual acres planted.
Normal Operating Sequence
Note: The acremeter counts rotations during drill
calibration (and if so, can be useful for calibration).
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. 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 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
or 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 15
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 logo
spots on the lower region of the display. Be careful
not to scratch the window.
When active the lower left corner displays the revolutions
per acre for which the meter is factory-programmed.
Figure 14
Electronic Acremeter
32618
Figure 15
Meter Display
32619
1
1