Great Plains NTA3007 Operator Manual - Manual (Page 73)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 69
2012-07-02 Table of Contents Index 166-371M
Calibration Crank
Calibration Crank Safety Information
Moving Chain Hazard:
Keep all persons except operator away from drill mainframe
during crank operations. Body parts and clothing can get
caught in chains, sprockets and gears, causing serious injury.
When operating the crank from, either side of the drill, all
parts of the contact drive system are in motion, including parts
out of sight of the crank operator.
Machine Damage / Invalid Results Risks:
Rotate the hand crank only in the:
clockwise direction on the left side, or
counter-clockwise direction on right side.
Operating in reverse can damage the meter gear box.
Note: If a variable rate gearbox is set to “0”, operating the
hand crank may fail to clear the meters of seed.
Crank General Information
Refer to Figure 71 (which depicts an earlier version of the
meter, without handle extensions or guards - do not operate
the meter without guards)
A hand crank is provided on the left side of the drill for
manual operation of the meters (the meters otherwise
turn only when the drill is lowered and in motion).
The crank is used for two common tasks:
• calibration of the meter setting for planting, and
• clean-out of the meter flute chamber.
Material Loss Risk:
With material loaded, open only the calibration door (front,
meter air inlet side). Do not open the clean-out door (rear
door, meter air outlet side) or material will flow in large
quantities. It is generally not possible to re-close the clean-out
door, with sufficient air seal, until the hopper is empty.
Figure 71
Hand Crank in Storage
29416
Figure 72
Open Calibration Door
26401
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