Great Plains NTA2007HD Operator Manual - Manual (Page 50)

46 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Meter Doors
Refer to Figure 39 and Figure 40
Each meter box has two distinct access doors on the bot-
tom:
• On the air outlet (rear) side: Clean-Out
(for emptying hopper)
• On the air inlet (front) side: Calibration
(for meter sampling and meter clean-out)
The doors are closed during transport, loading and plant-
ing. They may be open slightly in storage to allow drain-
age of condensation.
The doors need to close and seal tightly during planting.
Periodically inspect the lever clamps for proper tension,
and inspect the elastomer seals for integrity and resil-
iency.
Meter Door Opening
1. Lower the meter chute. Push the latch back
(toward cart center). Pull the outside end of the
chute to the outside and down.
2. There are two clamp handles on each door. Pull out
on a clamp handle
just until it is loose.
3. Pull out on the other clamp handle. The door nor-
mally will swing down on its own. If not, pull it open
by hand.
Meter Door Closing
Make sure the clamp handles are out or down (not up),
or it will not be possible to close the door.
1. Use a clean rag to wipe any residual material from
the face of the elastomer seals on the door, and from
the bottom face of the meter box.
2. Swing the door up into closed position.
3. While holding the door closed, swing one clamp han-
dle up, past vertical.
4. Swing the other clamp handle up past vertical.
5. Inspect the door closure for possible air leaks.
Replace any deformed elastomer seal or damaged
latch clamp.
6. Raise the meter chute. Pull it away from cart center.
Engage the latch handle under the washer.
Null4:
Null4:
Null4:
Material Loss / Air leak Risks:
Do not open the clean-out door (the rear door at the air outlet
side) until preparations have been made to capture any mate-
rial to be re-used. Any material present will flow immediately,
possibly in large volume, as soon as the door is open. It may be
impossible to close the door, with an adequate air seal, until
the hopper is empty.
Figure 39
Meter Doors Open
31161
1 2
3
3
4
1
2
4
3
Null4:
Figure 40
Meter Doors Closed
31158