CapstanAG PinPoint III ENVELOP, Operator'S Manual

Page: 105 / 128

TM
Troubleshooting
Problem Cause Error
Electric Servo Valve pump
control is stuck Make sure that the electric Servo pump control is
operating correctly
PWM spool is stuck Change the rate to observe whether the rate change
is slow, limited, or does not change at all. Replace as
needed
Speed data error
Incorrect speed calibration number
Poor GPS satellite reception/number of satellites
Worn pump
Spraying too fast which outruns the liquid system
capability
Remove the rate smoothing feature
Under
Application
Continued
Worn flowmeter
Put the rate controller in manual mode at a test
speed
Note: Putting the rate controller in manual mode
will lock the Servo valve position unless the valve
position is changed manually.
If the rate becomes stable, then it is one of these:
• Worn Servo Valve
• Worn PWM Valve
If the rate remains unstable, it is usually the
flowmeter signal instability.
Manual increase the rate. The rate and pressure
should increase. If the rate does not increase, then it
is one of these:
• Worn Servo Valve
• Worn PWM Valve
Manually decrease the rate. The rate and pressure
should decrease. If the rate does not decrease, then
it is one of these:
• Worn Servo Valve
• Worn PWM Valve
Worn tips or tips that are
too big
Find and install tips that are the correct size
Do a check of the low rates with a Wilder Quick
Calibrator or with a catch time test at each nozzle:
• Oz/min per nozzle=GPA x Test Speed (mph)
x Nozzle Spacing (inches) / (5940 x 128)
• Oz/min per nozzle=G/1000 ft2 x Test Speed
(mph) x Nozzle Spacing (inches) / (136 x 128)
Over
Application
Incorrect speed calibration
number Adjust the speed calibration setting
©
2021 Capstan Ag Systems, Inc.
105
PinPoint
™
III ENVELOP