Raven AccuFlow Vortex, Инструкция по установке и эксплуатации

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CHAPTER 5
58 AccuFlow™ Vortex and AccuFlow™ HP+ Installation and Operation Manual
OPERATING HP+ SYSTEM IN HP (NH
3
BOOST) MODE
The AccuFlow HP+ system must be operated in NH
3
boost mode if a Vortex Dual Valve system is upgraded by
adding a boost pump, or the controller is not capable of running the HP+ system as a single product. In this
instance, set up Product 1 (Control Valve) using the steps outlined in the “Programming the NH
3
Rate Control”
section. Set up Product 2 using the following steps.
Set up boost pump pressure control (single product node) as product 2 in “Spinner RPM” mode. Enter a product1
meter cal of '9999' and press 'OK'. Control node will set the following defaults. Exit and restart Viper Pro program
and verify the settings in the Node 2 'CAN Controller Status' screen.
•
Meter cal - 171
NOTE: For high pulse flowmeters, enter the CAL number from the Meter Cal Tag
•
Valve cal - 31
•
PWM frequency - 122
•
Min Pw low offset - 70
•
PWM preset - 70 (provides soft start for the boost pump)
•
Max Pw - 208
•
Rate Cal (target rate): 40 - 80 PSI [275 - 550 kPa]
•
Rate bump - 5 PSI [34 kPa]
NOTE: For best results, set the boost pump target rate 5 to 10 PSI [34 to 68 kPa] above the static or tank
pressure (pressure transducer reading with master switch 'off'). If the boost pump pressure (rate cal) is
set too high, excess vapor will form in the supply lines. If vapor builds up in the supply lines, the boost
pump may become vapor locked which results in no pressure boost.
Do not enter the rate cal or target rate in the pressure cal field on the control console. The pressure
cal value should only be used to calibrate the AccuFlow system pressure transducer installed at the
gauge tree manifold assembly. Refer to the Charging the AccuFlow™ HP+ System and Calibrating the
Pressure Transducers (Pressure Cal) section on page 51 to configure the pressure transducer.
VERIFYING ACCUFLOW HP+ OPERATION
Once the AccuFlow system is charged, the system is ready for the application of anhydrous ammonia to the
field(s). The following items should be checked periodically to ensure proper operation of the AccuFlow system
and application of anhydrous ammonia:
1. Verify that the implement/boom widths, speed cal, meter cal, valve cal, and rate cals have been programmed
correctly on the console (refer to the console’s Operation manual for details).
2. Toggle the master switch to the off position.
CAUTION
To avoid damage to boost pump seals, do not
run the boost pump dry. Be sure to shutdown the
boost pump when no anhydrous ammonia is
flowing through the pump or when the nurse
tank is empty.