Great Plains YP3025A Operator Manual - Manual (Page 99)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 95
02/16/2012 Table of Contents Index 401-705M
Material Clean-Out
When planting is completed, it is commonly the case that
some seed remains. There may be seed in the hopper or
bulk box, seed in the airbox, a small amount of seed in
the hose lines, and seed in the meters. Some meters
may be filled up to the air release vent (which prevents
additional seed from reaching that meter).
A complete system clean-out is a 3 step process.
A. Empty airbox (and hopper, if desired).
B. Blow residual seed to meters.
C. Clean out meters with fan running.
Possible Dust and Chemical Fume Hazard:
Wear a respirator, and any other protective equipment speci-
fied by the seed and/or seed treatment supplier. Expect dust
and fumes during hopper clean-out.
Air Box Clean-Out
1. Place a tarp or large container under the air box
clean-out doors.
Refer to Figure 107
2.
Close the slide gates on the hopper or bulk box.
3. Open air box clean-out doors.
4. If hoppers are mounted, gradually open hopper slide
gates. Leave bulk seed box gates closed, unless the
boxes actually need to be emptied.
Use gates to regulate seed flow while recovering
seed.
5. As flow subsides, rapidly open and close the slide
gate to dislodge seed in the tracks. Tap on the sides
of the hopper to dislodge residual seed.
Air System Clean-Out
Refer to Figure 108 (which also depicts the meter with the rain
cover and disk removed - do not remove disk until step 14)
6.
Close slide gates.
Close air box clean-out doors.
7. Set all seed inlet shutters to closed (handle fully
raised to the position above setting “I”).
This step prevents meter pressurization air from
leaking back against seed delivery air at meters that
have low seed pools or are empty.
Entrapment and Rapid Suffocation Hazard:
Never enter a hopper for any reason.
Keep strainer in place at all times.
▲ A hopper that is full or merely appears full can be an
entrapment hazard. You can sink entirely into the grain, or
into an oxygen-deficient void, and suffocate in a matter of
seconds. Grain bridges and crusts are especially danger-
ous.
▲ When hazardous fumes are present, you can be quickly
overcome even with the hopper lid open.
▲ Do not enter a hopper for material loading, material
unloading, hopper cleaning or meter maintenance.
▲ Clean hopper by power washing from outside hopper top.
1
Null4:
Figure 107
Hopper Slide Gate Open
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1
2
Null4:
Figure 108
Seed Inlet Shutter Closed
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2