Great Plains SML1000 Operator Manual - Manual (Page 30)

26 SML-1000, SML-750, SML-500 Table of Contents Index Great Plains Manufacturing, Inc.
407-451M Table of Contents Index 03/31/2011
Material Clean-Out
When planting is completed, it is commonly the case that
some fertilizer remains. Do not allow left over material to
remain in the tank, pump or boom for more than a few
hours. It will corrode the pump and can clog strainer, ori-
fice plates, valves and lines.
Material Recovery
The tank may be gravity-drained out either the inlet or
outlet lines (there is no dump line at the tank).
If draining via the inlet line, this reverses the flow at the
inlet strainer. This can cause filtered solids to be
returned to the source supply. It can also cause some
build-up on the downstream face of the strainer screen.
Plan to clean the strainer (page 27) after a drain-back
recovery.
Excess Application
If excess material in the tank cannot be recovered, apply
it to the field just planted.
• To avoid over-fertilizing, dilute the remaining material
with water, or reduce the application rate.
• To minimize seed disturbance, lock-up row units or set
their down-force to minimum (cam setting zero; out of
notch). Set press wheels for zero or minimum opener
disc depth.
System Flush
• Once the tank is empty, fill it with enough clean water
to flush the cart hoses, implement hoses, pump sys-
tem, boom system and drop lines. If possible, fill from
the lid and wash the side walls of the tank.
• Apply this water to the planted field as for “Excess
Application”.
Pump Preservation
When the weather is expected to remain above freezing,
a cast iron pump is protected by the flush water. If the
period of storage is of unknown duration, take freezing
precautions. Water freezing in hoses, fittings and tubing
generally does no harm, but water freezing in a pump
can easily fracture the case.
When the temperature may sink below freezing, either
remove the pump to warm storage, or fill it with RV anti-
freeze (propylene glycol [PG] with corrosion inhibitors). It
is not necessary to introduce anti-freeze to the cart tank,
nor fill the entire hose and boom system with anti-freeze.
Check the product MSDS for the actual concentration of
PG in the product (often omitted on the packaging). Cal-
culate the dilution for protection temperature based on
independent sources (as product names and package
claims are often optimistic).
Null4:
Confined Space Hazard:
Never enter the tank for any reason.
▲ You can be overcome by hazardous fumes very quickly even
in an empty tank with the lid open.
▲ Even if the fumes are not hazardous, oxygen levels may be
insufficient for breathing.
▲ A partially full tank is a drowning risk.
Possible Chemical Hazard:
Wear proper protective equipment as required by chemical
manufacturer. Avoid prolonged breathing of chemical fumes.
Wear respirator as required by chemical manufacturer. Some
chemicals will cause serious burns, lung damage, and death.
Avoid contact with skin or eyes. Seek medical assistance imme-
diately if accident occurs. Know what to do in case of an acci-
dent.
Equipment Damage Risk:
Do not leave fertilizer or fertilizer residue in pump. Do not
allow air to enter pump. Even for short periods of storage, the
entrance of air into the pump causes RAPID and SEVERE
CORROSION.
Note: Dispose of residual materials as specified by the
material supplier.
Note: Removal of the tank discharge fitting requires spe-
cial procedures or special tools. When working
with external fittings, avoid loosening the tank fit-
ting.