FM-750 Display User Guide 7
Safety
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.
To Next Page
Loading...
