GREAT PLAINS NP2540, Operator'S Manual, Page: 33 / 196

NP2540 Table of Contents Index Metering Overview 29
2019-04-12 Table of Contents Index 417-459M
The following callouts are for trailing nurse tank cart
components. See the “ Using Anhydrous Ammonia
Safely ” manual (407-551M) for all nurse tank callouts.
The present manual lists only those required for
applicator field operations.
A56.Acme Female Hose Coupler
This end of the hose connects the tank withdrawal
valve to the leading applicator inlet at the
breakaway coupler. For use with a Nutri-Pro
®
applicator, the outlet end of the hose must be
equipped with a 1
3
/
4
-4 female Acme fitting.
The outlet end of the hose has a swivel collar
a
or
shroud containing the female Acme fitting. This
allows connection without needing to twist the hose.
Acme hose couplers are intended for hand tightening
only. Do not use tools to make the cart-applicator
connection. A liquid-tight seal is made by the gasket
in the male Acme fitting on the applicator breakaway
coupler.
A57.Outlet Hose Assembly
The hose may have zero, one or two operating
valves , one or more bleed valves, and a
hydrostatic relief valve. The outlet end may have an
Acme plug.
A58.Hose Valve(s) (Not Shown)
The hose may have zero, one or two operating
valves.
Excess
NH
3
Release Hazard:
If the outlet hose is entirely dismounted (both ends free)
for transport and storage, and both ends are 1
3
/
4
-4 Acme,
be sure about which end is which. Installing a hose
backwards can result in needless excess NH
3
release at
unhitching, or a line segment unprotected by bleed and/or
relief valves.
a. Acme collars may be aluminum, but all internal coupler components must be
NH
3
-safe, typically stainless steel.
A60 A12
Hose valves are typically hand wheel valves, or lever
valves. Read any documents provided for the valves.
Have the terminal or dealer explain how the valves
work.
Suffocation, Blinding and Burning Hazards:
Never test an anhydrous ammonia hose valve unless you
are absolutely certain the hose and valve bodies are
empty, or both hose ends are securely connected to sealed
systems.
 A two-valve hose can contain a substantial amount
of
NH
3
even when completely disconnected.
See “Avoid Line Traps” on page 114 .
 Older ball valves can contain NH
3
inside the ball
when closed, even though disconnected at both ends.
See “
Avoid Ball Traps” on page 115.
Follow instructions for bleeding and checking. Never use
a valve handle as a carrying handle. Keep hands clear of
bleed valves when carrying a hose.
Excess NH
3
Release and Trapping Hazards:
Understand hose and tank withdrawal valve functions and
sequencing. This manual presumes a hose with a single
outlet-end shut-off valve , and a tank outlet with a
withdrawal valve . If the hose in use is different, have
the hose provider explain the correct order for operations.
A60
A57
A60