Raven ISO Product Controller II, Operation Manual

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70 ISO Product Controller II and Hawkeye Operation Manual
Pressure or rate inaccurate or unstable. • Verify that all calibration numbers and settings keyed into the
console are correct. Verify SPEED is registering accurately. If
SPEED is inaccurate, refer to the UT display troubleshooting
procedure.
• Verify the pressure transducer is selected and calibrated
correctly.
• Verify Flow Meter calibration value and target rate is within
overall flow range.
• In MAN (manual) operation, verify that Pressure and Rate
display holds constant.
• Confirm that boom section status shown on the display is not
changing.
• Perform a self-test with boom master switches on to verify the
area/hour is steady while sitting still.
• In MAN (manual) operation, check low end and high end
pressure and flow range.
• In the Pressure Control Settings menu, decrease the Response
Rate if pressure and rate oscillate greatly in AUTO mode.
Increase the pressure response rate if control is unresponsive.
• In the Product Control Settings menu, decrease response
sensitivity if system pressure and rate oscillate slightly in AUTO
mode. Increase if the system is unresponsive. Avoid Pressure
Response Rate and Product Response Sensitivity both above 70.
Cannot adjust rate or pressure in automatic
or manual operation.
• Verify the pump switch is turned on in the UT or machine
console.
• Verify the pump and NCV PWM values are increasing or
decreasing in the diagnostic screen.
• Check cabling to control valve for breaks.
• Check connections in cabling for cleanliness.
• Verify that there is voltage at the valve connector by toggling
master switch on and setting the system to Manual. Manually
change pump PWM and verify voltage changes at the valve.
• If voltage to the valve is changing smoothly when actuating in
Manual mode, but the control valve or pump are not adjusting
pressure, inspect or replace the control valve or pump.
Sprayer pressure is correct but RATE is low. • Verify that nozzle strainer screens or check valves are not
plugged.
• Verify that pressure at each boom is the same.
• Verify all nozzles are of proper and same orifice size.
• Verify correct flowmeter and pressure transducer calibration
values.
Problem Action