l Never work on NH3 equipment in confined spaces.
l Before you attempt to transport the implement, discharge the system of all NH3 and
completely shut down the system. See Discharging the System , 20.
l If symptoms of illness occur during or shortly after use of NH3 products, seek immediate
medical attention.
l Keep a source of clean water (at least five gallons) readily available. In case of exposure, flush
exposed skin or eyes immediately with large quantities of water and seek immediate medical
attention.
l NH3 can be harmful to the environment if not used correctly. Follow all local, state, and federal
regulations regarding proper handling of this chemical.
Servicing the Equipment
1. Remove the system from operation before performing any maintenance.
2. Thoroughly bleed all system lines and disconnect the nurse tank hose. See Discharging the
System , 20.
3. Make sure that the gauge pressure is at zero before you open the system.
4. Use extreme caution when opening a previously pressurized system.
Discharging the System
1. Turn off the console or vehicle master switch.
2. Completely close the main shut-off valve on the supply or nurse tank.
3. Resume field application until the pressure gauge shows zero pressure.
4. Check again that the console and/or vehicle master switch, and all section switches, are turned
off.
5. Completely close the emergency shut-off valve the cooling tower.
6. Bleed and disconnect the nurse tank supply hose from the system.
7. Turn on the console master switch and all section switches.
8. Stand up-wind from the implement and then slowly open the bleed valve(s) until fully open.
9. Allow at least one (1) hour for the system to fully discharge.
10. Before you open the system, make sure that the pressure gauge on the manifold reads zero
and that the cooling tower is not cold to the touch. This ensures that all liquid NH3 has
evaporated and that the pressure is discharged.
Note – Frost on any component is a positive indication of trapped NH3 at low pressure. Lack of
frost does not always indicate a lack of NH3.
20 CFX-750 Display User Guide Version 7.0, Revision A
Safety Information
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