Great Plains NP30A 30-foot Operator Manual - Manual (Page 33)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 29
2014-05-20 Table of Contents Index 407-502M
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Anhydrous ammonia is 82% Nitrogen, the highest of any
fertilizer. The compound NH
3
is normally a gas at
ambient temperatures. It is retained in the soil only by
chemical reactions and physical mechanisms, primarily
reactions with soil moisture.
Consult with your agronomist about optimal application
timing, rate and depth, based on proposed crop, soil
temperature, soil moisture content and ambient
temperature. Non-optimal applications can result in NH
3
loss to the atmosphere, soil drying, and undesired long
term changes in soil pH.
Pre-Application Setup
Complete this checklist before routine setup:
❑ Read and understand “Important Safety
Information”, pages 1 to 7.
❑ Check that all working parts are moving freely, bolts
are tight, and cotter pins are spread.
❑ Check that all grease fittings are in place and
lubricated. See “Lubrication and Scheduled
Maintenance” on page 126.
❑ Check that all safety decals and reflectors are
correctly located and legible. Replace if damaged.
See “Safety Decals” on page 8.
❑ Inflate tires to pressure recommended and tighten
wheel bolts as specified. See “Tire Inflation Chart”
on page 139.
Anhydrous Ammonia Exposure Hazard:
Use a tractor with a fully enclosed cab. A tractor that is not
fully enclosed exposes the operator to substantially more NH
3
vapor, particularly if field requirements result in downwind
turns or downwind passes.
Repeated exposure to NH
3
vapor may exceed PEL
(Permissible Exposure Limits) and also induces olfactory
fatigue (adaptation). Over time, you become less sensitive to
ammonia odor, and may fail to recognize dangerously high
concentrations.