MIL-S-23923D
combinations given in table I. Liquid discharge rates shall be adjustable .
between 30 and 100 gallons per hour (gph). Under windless conditions, the
sprayer and duster unit shall be capable of dispersing water or oil based
formulations, by means of the air output selected from table I, to a
horizontal distance of 150 feet. At 100 feet from the nozzle, formulation
particles of oil based insecticides shall have the characteristics given in
table II. Dust and granule discharge rates shall be adjustable between 30 and
300 pound-force per hour (phr). Under windless conditions, the sprayer and
duster unit shall be capable of dispersing dust formulations, having a
fineness of not greater than 177 microns, to a horizontal distance of 150
feet. These requirements shall be met whether the equipment is in motion or
stationary. There shall be no signs of damage after towing the type A sprayer
and duster unit at 5 miles per hour (mph) over 4 by 4-inch timbers spaced
approximately 3 feet apart on a paved surface; or after transport of the type
B sprayer and duster unit, when centered over the driving axle of a flat bed
truck, over the same or equal course. Towing or transport during spraying and
dusting operations shall not jeopardize the operator nor interfere with his
use of the controls.
3.7 Design and construction. The equipment design and accessory
installations shall provide accessibility for maintenance and service in the
field. The design shall be such as to prevent conditions which may be
hazardous to personnel or deleterious to equipment. The sprayer and duster
unit shall be so constructed that all operating controls are within easy
access to the operator when engaged in spraying or dusting. A comfortable
seat, padded and covered with weather and spray resistant material, shall be
provided, The seat shall be securely mounted in a manner to provide
convenient control and safety under all operating conditions, including the
engine starting system controls, engine speed control, air stream discharge
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