Quantcast Cleaning Equipment and Preparing It for Storage

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AFM 91-19 / TM 5-629 / NAVFAC MO-314
24 May 1998
delivery rate. The pump acts as the metering
(a) Add 8 to 16 ounces of nonsudsing
device in hand-operated injectors. Power injec-
detergent to 30 to 40 gallons of water, run
tors apply a continuous stream of fumigant in
through the pump and bypass for 5 minutes,
the bottom of the plow furrow or behind the
and then run out through the boom.
shanks of a chisel cultivator. The delivery rate is
(b) Partly fill the tank with a solution of
determined by line pressure and the size of the
1 to 2 percent household ammonia (1 to 2 quarts
orifice. Both the delivery rate and the speed of
of household ammonia in 25 gallons of water,
the tractor determine how many gallons of
or 2 teaspoons per quart of water).
fumigant are applied per acre.
(c) Leave this solution in the sprayer
(including hoses and boom) overnight.
c. Various means may be used to prevent too
(d) Rinse thoroughly with clean water.
rapid a loss of toxic vapors from the soil. Some
(3) Charcoal rinse:
power-operated fumigant injectors are equipped
(a) Use at least one-third of a tank of
with devices that tamp and pack the soil. One
water. For each 10 gallons of water, add 4
such device consists of a float and a roller that
ounces of 100-mesh activated charcoal and 2 to
simultaneously smooth and pack soil over the
4 ounces of laundry detergent. Agitate this
treated area. Other equipment has been designed
mixture vigorously to distribute the charcoal
to lay plastic sheeting behind the injector to
through the water.
cover the treated area.
(b) Wash the equipment for 2 minutes by
d. For small area, special devices can be used
swirling the liquid around so that it reaches all
to release fumigants under plastic covers that are
parts of the tank. Pump some of the liquid
sealed with soil at the edges. One such device
through the hoses and nozzles.
punctures a l-pound can of methyl bromide with
(c) Drain the tank and rinse the equip-
a metal tube, the other end of which is con-
ment with clean water.
nected to a plastic hose that extends under the
b. Dispose of excess herbicide mixtures and
edge of the plastic cover. Methyl bromide, being
rinseate according to Armed Forces Pest Man-
a liquid under pressure in the can, is discharged
agement Board Technical Information Memo-
through the hose under the cover. Another
randum 21, Pesticide Disposal.
device holds a can of methyl bromide in an
c. Preparing Equipment for Storage:
upright position on top of a sharpened spike.
(1) Scrub the sprayer with a stiff-bristle
After lightly placing a can of methyl bromide in
brush. Coat all iron parts that were exposed to
the holder and placing both under the sealed
the chemical with a rust inhibitor or light oil.
cover, the operator releases the methyl bromide
Remove all nozzles and disassemble, clean, and
by applying enough pressure on the top of the
store them in light oil. (Before using the sprayer
can to puncture it.
the next year, wash the nozzle(s) in a degreaser
or high flash-point solvent to remove the oil).
(2) Fill the pump with a rust preventive.
8-7. Cleaning Equipment and Preparing It for
(3) Remove the caps from the ends of
booms, and stand the booms on end to remove
a. All spraying equipment should be cleaned
sediment. Remove, clean, and reassemble all
after each use. If the chemical is water soluble, a
thorough flushing and rinsing with water is
(4) If the sprayer is powered by a gasoline
sufficient. Herbicides such as 2,4-D, picloram,
engine, drain the fuel tank and carburetor and
and dicamba, however, are very difficult to
pour a tablespoon of engine oil into each spark
clean from equipment. In such cases, remove
plug hole. Turn the engine over by hand to
and clean the nozzles and then clean the rest of
distribute oil on the cylinder walls.
the equipment with an ammonia or charcoal
(5) If the sprayer is to be stored outside,
remove all rubber hoses and keep them in a cool
(1) Remove nozzles and scrub with kero-
dark place.
(6) Thoroughly clean dusters and spreaders
(2) Ammonia rinse:
before storage.


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