Raven AccuFlow Vortex, Инструкция по установке и эксплуатации

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CHAPTER 5
52 AccuFlow™ Vortex and AccuFlow™ HP+ Installation and Operation Manual
8. Close bleed valves and all bleed ports.
9. Turn the AccuFlow emergency shut-off valve(s) to the full open position.
10. Connect and secure the hose from the nurse tank to the AccuFlow implement.
11. Slightly open the nurse tank shut-off valve to allow NH
3
to slowly pressurize the system.
NOTE: Opening the emergency shut-off valve or the nurse tank shut-off valves too quickly may result in the
excess flow valves on the nurse tanks to close, and the system not to charge properly. Excess flow
valves must be re-set before system can be charged.
12. Inspect the system for leaks.
a. If leaks are detected, proceed to step 13.
b. If no leaks are detected, skip to step 14.
13. If leaks are present:
a. Close the nurse tank shut-off valve.
b. Open the bleed valve(s) and allow all NH
3
in the lines to evaporate and discharge from the system. When
the system is fully discharged, the AccuFlow Vortex cooler should not feel cold and the pressure gauge
reading on the AccuFlow system should be at zero.
c. After the system is completely discharged, disconnect the nurse tank hose.
d. Correct leaks and repeat step 10 through step 12.
14. Once the system pressures have stabilized, verify that pressure gauge readings on the AccuFlow system and
the nurse tank are matching. If the pressure readings do not match, one of the gauges may be defective and
should be replaced.
15. Enter the pressure gauge reading on the AccuFlow system in the Pressure Cal field on the control
console (e.g.Viper Pro or other field computer for both P1 & P2 pressure transducers).
IMPORTANT: In standby, (master off) P1 & P2 pressure readings should be the same.
NOTE: The Pressure Cal is typically only set once per application season to calibrate the transducer. The
Pressure Cal value will revert to zero once entered and does not need to be set repeatedly during an
application season. This value must be set to the gauge pressure of the AccuFlow system or tool bar,
not the anhydrous tank pressure.
16. Turn the nurse tank main shut-off valve to fully open. The AccuFlow system is now charged and ready for
operation.
DEFAULT CALIBRATION VALUES (NH
3
PRE-SETS)
• Application Mode = HP+ PWM Close Valve
• Meter cal = 171 (LB N/Acre with RFM 60SG flow meter)
NOTE: For high pulse flowmeters, re-enter the CAL number on the Meter Cal Tag.
DANGER
Use extreme caution when opening a previously
pressurized anhydrous ammonia system.
Exposure to anhydrous ammonia can cause
severe burning, blindness, or death. Always wear
proper personal protective equipment when
working with anhydrous ammonia products.