Operating instructions

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance 37
2013-03-25 Table of Contents Index 403-362M
Removing Meter Box
Removing the meter box and inlet manifold exposes a
67x27cm (26x10.7in) hole through which stubborn
material may be extracted.
Refer to Figure 22
1. Not shown: Loosen the gearbox-to-meter chain idler
and remove the chain. Disconnect inlet and outlet
hoses. Disconnect or remove the rpm sensor.
2. Loosen all the nuts securing the meter box to the
hopper bottom plate. Unscrew the nuts to the bolt
ends, but do not completely remove the nuts.
3. The meter box has a bead of silicone sealant
between it and the bottom plate. Use a pry tool to
free the meter box from the hopper bottom plate.
4. Once hanging entirely on the loose bolts, remove the
nuts and lower the meter box from the hopper.
When re-mounting the meter box, scrape off the old
silicone sealant and replace it with fresh sealant.
Hopper Entry
Normal use of the fertilizer hopper and routine
maintenance do not require entry. The hopper vent tube
structure includes features to aid emergency egress. It is
not intended for routine entry. However, do not remove
the vent tube structure, as it is required for
pressure-balancing the space above the material.
▲ A hopper that is full or merely appears full can be an
entrapment hazard. You can sink entirely into the material,
or into a void, and suffocate in a matter of seconds. Bridges
and crusts are especially dangerous.
▲ You can be overcome by hazardous fumes very quickly even
in an empty hopper with the lid open.
▲ A partially full hopper, even with no bridging present, is a
suffocation risk.
Oxygen levels may be insufficient and/or
dust levels may be too high for breathing.
▲ Do not enter a hopper for loading material.
▲ Do not enter a hopper for unloading material.
▲ Do not enter a hopper for routine cleaning.
▲ Do not enter a hopper for any meter maintenance.
▲ Never enter a hopper without at least one trained and
equipped attendant present.
▲ Never enter a hopper for any reason unless you fully comply
with applicable laws, regulations, rules, agreements, and
the instructions in this section. Where applicable laws,
regulations, rules, agreements contradict an instruction
below, do not follow that instruction.
Figure 22
Remove Meter for Cleaning
29718
Rapid Suffocation Hazard:
Encrusted grain may be loose and flowing beneath the crust.
Any hollow spaces are highly likely to have insufficient oxygen
and/or toxic gases from microbial action. Falling through a
crust in either case can result in death in a matter of seconds.
Never enter a hopper to dislodge a crust or bridge.