Raven RCM-Sprayer Hawkeye 2 Calibration And Operation Manual page 80

CHAPTER 9
Problem
Pressure or rate inaccurate or unstable.
Cannot adjust rate or pressure in automatic
or manual operation.
Sprayer pressure is correct but RATE is low. • Verify that NCV2 strainer screens or check valves are not
70
• 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 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 Control Valve menu, decrease the Valve Response Rate if
pressure and rate oscillate greatly in AUTO mode. Increase the
valve response rate if control is unresponsive.
• In the Control Valve Settings menu, decrease the NCV2
response sensitivity if system pressure and rate oscillate slightly
in AUTO mode. Increase if the system is unresponsive. Avoid
setting both the Valve Response Rate and NCV2 Response
Sensitivity above 70.
• Verify the pump switch is turned on in the UT or machine
console.
• Verify the pump and NCV2 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.
plugged.
• Verify that pressure at each boom is the same.
• Verify all nozzles are of proper and same orifice size.
• Verify correct flow meter and pressure transducer calibration
values.
RCM - Sprayer and Hawkeye® 2 Calibration and Operation Manual
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