36
Troubleshooting continued
All SprayMate II consoles, flowmeters and servo valves are tested
prior to packaging,so unless there has been damage in shipment
you can be confident that everything will be operational when
you receive it.
However, if you do encounter a problem that appears to be
related to equipment failure, PLEASE DO NOT OPEN THE
CONSOLE. Your system is protected by a warranty,and Micro-Trak
will gladly correct any defect.
Many problems are the result of mistakes in installation or
operation. Before returning any parts for service, carefully check
your installation and review the operating instructions. For easy-
to-follow guidelines, refer to the troubleshooting section which
follows.
Console appears dead
Using your test light, check for 12 volts at the power source. Also
check for damaged power cable or reversed terminals. (Console
requires 12 volts for proper operation). Check connections of
ignition or power switch.
Speed is always zero or erratic
Check for properly calibrated wheel circumference.
Review speed sensor installation. Check for proper mounting,
alignment and spacing of sp
eed sensor in relationship to magnet
assembly. Make sure magnet polarities are alternated. Also check
cable for breaks or incomplete connection. For more suggestions
on solutions t
o speed problems, see Hall-effect sensors and
console inputs on pages 37-38.
Distance count is inaccurate
Wheel circumference was incorrectly measured or entered.
Review calibration, re-adjust and test.
Area count is inaccurate
Implement width or wheel circumference was measured
incorrectly or programmed incorrectly. Go back through the
or
iginal pr
ocedures, make changes, and test for acre (hectare)
count again. (Make sure no width is entered for unused booms.)
Verify accuracy with formula:
Acres = Distance x Width in feet/43560
Hectares = Distance x Width in meters/10,000
No readout of gallons (liters), or gallons (liters) per
minute
Check to see that the sprayer pump and equipment are operating
properly. If liquid is moving through the line, check the flow
sensor to be sure it is screwed all the way into the flowmeter.
Check to see that a FLOW CAL number has been entered. Also
check cable for breaks or incomplete connection.
If the flowmeter is new or has not been used for a long period of
time
, the turbine may be sticky. Flushing the system out with
water should make the turbine spin freely.
Flow rate may be too low to register a reading, or foreign
material may be lodged in the flowmeter.
Booms shut-off
If you are in AUTO with no speed, the booms will shut-off.
Total liquid used is inaccurate
This may result from an incorrectly-entered “FLOW CAL” value.
C
heck the number stamped on the flowmeter tag, and be sure
this is entered in the console’s “FLOW CAL” position. If the
meter has been used for some time, wear may have changed
the Flow Cal value. See Fine-Tuning Flowmeter Calibration in
Appendix C.
Check the mounting position of the flowmeter. With lower
flow rates, the meter should be mounted vertically. Also check
to see that the flow sensor is screwed all the way into the
flowmeter.
Other causes may be inaccurate sprayer tank markings, a flow
rate too low to register, or foreign material lodged in the
flowmeter.
Console is erratic in operation
If you have a two-way radio, it may be mounted too close to
the console. Keep all SprayMate II cables away from the radio,
its antenna and power cable.
Ignition wires may be causing the console to malfunc
tion.
Keep SprayMate II cables away from ignition wires, or install
ignition suppressor.
Reroute all cable away from electric solenoids,air conditioning
clutches and similar equipment.
Check the VALVE SPEED calibration number in Special
Calibration. If the RATE tends to overshoot or oscillate, the
VALVE SPEED setting may be too high for the control valve
b
eing used;
r
educ
e the VALVE SPEED setting by 1 (range is -4
to +3).
Displayed measurements do not make sense
The console may be in the incorrect measurement mode
(English or metric). See page 22 for instructions.
D
isplay reads “OFL”
DISTANCE, AREA, and VOLUME counters read OFL when they
ha
ve exceeded their maximum count. Reset to zero to resume
counting.
System operation (control) is sluggish in AUTOmatic
mo
de
C
heck the VALVE SPEED setting in Special Calibration. If using
a slow valve (4 seconds or more, close to open) increase the
V
AL
VE SPEED setting
.
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