20
LEGACY
Disconnection Of Nurse Tank
1. With personal protective equipment in place, and beginning at the tank, fully
shut off the supply hose valves. If the supply hose is a tank wagon component
(as opposed to a tool bar component) an additional hand operated globe valve
shut off located between the quick coupler and the Heat Exchanger feed line
will signicantly speed up the tank wagon change process.
2. Clear all personnel from area except for the operator. While considering the
direction of the wind to avoid ammonia vapor drift toward the operator or any
other personnel, beginning at the tank, slowly open supply line bleed valves to
release pressure from the hose.
3. Physically grasp, lift and lightly shake the supply hose mid section to insure
total evacuation of ammonia. Once again, be wary of the wind direction.
4. Place the supply hose in a transport storage position, preventing it from
becoming entangled or in contact with sharp edges or abrasive
surfaces.
5. Always park and unhook the nurse tank on a smooth and level surface.
Block the wheels to prevent tank wagon runaway. High winds or uneven
terrain can cause unblocked tank wagons to move out of control.
6. Disconnect tank wagon tongue safety chains, hitch pin key and hitch pin.
CAUTION: Fifth wheel style running gear front axles may inadvertently
rotate in uneven soil conditions when the hitch pin is pulled causing the
tongue to come into contact and potentially injuring the operator.
WARNING: Before maintenance is preformed on any part of the NH
3
system, be sure the total system is bled off and all liquid is drained. Liquid
ammonia can remain trapped in system cavities, even when the system
has been opened to atmospheric pressure. Always assume that ammonia
remains in the system components and hoses at all times. Always wear
tight-tting chemical-proof goggles, long cuff rubber gloves, heavy-duty
long sleeved shirt and exercise extreme caution.
Anhydrous Ammonia Operating Instructions
WARNING
CAUTION
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