37
Troubleshooting
General
All MT-3405M 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, blown fuses or reversed
terminals.
(console requires 12 volts for proper operation).
SPEEd IS ALwAyS zERO OR ERRATIC
Check for properly calibrated wheel circumference.
Review speed sensor installation. Check for proper mounting,
alignment and spacing of speed 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 to speed problems, see
Halleffect inputs and console inputs on page 38.
AREA COUNT IS INACCURATE
Implement width or wheel circumference was measured
incorrectly or programmed incorrectly. Go back through
the original procedures, make changes, and test for acre
(hectare) count again. Verify accuracy with formula:
acres = Distance x Width in feet/43560
Hectares = Distance x Width in meters/10,000
dISTANCE COUNT IS INACCURATE
Wheel circumference was incorrectly measured or entered.
Review calibration, readjust and test.
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.
TOTAL LIqUId USEd IS INACCURATE
This may result from an incorrectly-entered “FLOW CAL”
value. Check 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 Finetuning Flowmeter
calibration on page 30.
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.
6553.5 MESSAgE dISPLAyEd IN RATE MOdE
If this number appears when your equipment is standing still,
it indicates that the boom valves are open or not completely
closed and liquid is passing through the system.
NOTE: 6553.5 may also temporarily appear when valves
are closed if liquid is sloshing back and forth through the
flowmeter, or if a portion of the line drains out. In this case,
no corrective action is required.
If this message appears when you are in motion with the
sprayer on, it indicates that speed sensor impulses have been
lost.
“NONET” MESSAgE dISPLAyEd
This message appears anytime the console and the module
have lost communication. Check the 4-pin cable and
connectors for loose connection or damage.
eXcePtiOn: if local speed is still connected, the bottom
four positions on the rotary dial will read “nOnet”, but the
“SPeeD”, “tOtal area”, “SuB area” and “DiStance”
positions will display normal working data.
CONSOLE IS ERRATIC IN OPERATION
If you have a two-way radio, it may be mounted too close to
the console. Keep all MT-3405M cables away from the radio,
its antenna and power cable.
Ignition wires may be causing the console to malfunction.
Keep MT-3405M cables away from ignition wires, or install
ignition suppressor.
Reroute all cables away from electric solenoids, air
conditioning clutches and similar equipment.
“BAd CAL” MESSAgE dISPLAyEd
This message appears upon power-up if the console
detects a corruption in calibration settings since the
last power-up. If this occurs, all calibration settings should
be verified. To clear this message, simply press the “CAL”
button.
dISPLAyEd MEASUREMENTS dO NOT MAkE SENSE
The console may be in the incorrect measurement mode
(English or Metric).
See page 24 for instructions.
dISPLAy REAdS “OFL”
DISTANCE, TOTAL AREA, SUB AREA and TOTAL FLOW will
read OFL when they have exceeded their maximum count.
Reset to zero to resume counting.
