Material clean-out, Air box clean-out, Air system clean-out – Great Plains 3PYPA Operator Manual User Manual
Page 105: Air box clean-out air system clean-out
Great Plains Manufacturing, Inc.
Maintenance and Lubrication
101
03/20/2012
401-647M
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, airbox, hose lines, and 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 121
2.
Close the slide gate
on the hopper or bulk box.
3.
Open air box clean-out door. This empties the air
box.
4.
If a hopper is mounted, gradually open the hopper
slide gate. Leave a bulk seed box gate closed,
unless the box actually needs to be emptied.
Use slide gate to regulate seed flow while recovering
seed from hopper.
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 122 (which also depicts the meter with the rain
cover and disk removed - do not remove disk until step 14)
6.
Close slide gate.
Close air box clean-out door.
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 grain, or into
an oxygen-deficient void, and suffocate in a matter of sec-
onds. Grain bridges and crusts are especially dangerous.
▲ 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.
Null4:
Figure 121
Hopper Slide Gate Open
29495
1
1
Null4:
Figure 122
Seed Inlet Shutter Closed
29609
2
2