Great Plains 3S-4000F Operator Manual - Manual (Page 49)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 45
2014-06-10 Table of Contents Index 195-394M
Acremeter Operation (S/N YY1736+)
Refer to Figure 43
The acremeter counts shaft rotations whenever the shaft
rotates - this is with the drill lowered and in motion or
during crank operation. The meter is programmed to
display rotations as acres/hectares, when using all rows,
factory-specified tires and tire inflations. See also the
Electronic Acremeter Manual 152-314M.
Unusual conditions and/or non-standard row spacings
can cause the acremeter tally to vary from actual acres
planted.
Normal Operating Sequence
Note: 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. 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, moving forward), the
display blanks (goes dormant), but area tally
continues.
4. When raised for turns, obstructions and transport,
the drive wheel stops, 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” below.
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 44
To conserve power, the LCD display blanks itself most of
the time. If you need to read the display after it 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 43
Electronic Acremeter
(S/N YY1736+)
27378
When active the lower left corner displays the revolutions
per acre for which the meter is factory-programmed.
Figure 44
Meter Display Acres
28467