Before beginning actual spraying, perform the following
“Pre-field” procedure to ensure that your valve settings,
nozzle selection and desired speed range will allow the
MT-2400 to provide the required application control. This
procedure should be repeated for each new nozzle se lec-
tion and/or application rate. By performing all of the steps
listed below, you set up your system to allow the MT-2400
to perform at optimum level. Fill your sprayer tank with
clean water.
DO NOT
use chemicals until the entire sys tem is
completely checked out and operating properly.
IMPORTANT NOTE: Most nozzles will maintain a good
pattern over a maximum speed range of two to one. (For
example, if your maximum speed is 12, your minimum
speed shouldn’t go below 6.)
NOTE: Pre-field System Checkout is a procedure performed
while the console is in the CAL mode. The Red WARNING
light will be lit during the procedure and “CAL” on the
display will be flashing.
1. Completely close range adjust valve (if installed), and
ag i ta tion valve (if installed) and throttle valve (must be
installed).
2. Start vehicle and pump, bring the engine up to normal
operating RPM.
3. Enter MAXIMUM application TEST SPEED into con sole.
With console in HOLD, enter calibration mode. Push
and hold (CAL) button. CAL will appear on display and
red light will be on. Turn rotary switch to TEST SPEED
position. Use “+” or “-” button to enter maximum
application speed. Do not exit cal i bra tion mode. CAL will
flash on the display indicating TEST SPEED mode.
4. Select manual “MAN” control mode and turn all booms
ON.
5. Turn rotary switch to APP. RATE position and hold “+”
button for approximately 30 seconds to completely
close the servo valve (control valve). (Minimum by pass
allowed - maximum flow output to booms.)
CAN’T GET THERE?
If you can’t get to the desired ap pli ca tion rate, you may
need different nozzles, pump, or you may need to make
modifications to your plumbing configuration.
Please refer
to Trou ble shoot ing Plumbing.
•
Adjust agitation valve for desired agitation. If range
valve is installed, adjust range valve until display reads
20% higher than the desired application rate.
•
Slowly close the throttle valve until the display reads
slightly higher (5% to 10%) than the desired ap pli ca tion
rate. If the throttle valve is more than two-thirds closed,
install range valve and perform pre-field again.
•
Now is a good time to confirm that GPA, GPM, MPH,
WIDTH and PSI all coincide with the nozzle man u fac-
tur er’s charts. PSI may be slightly higher than indicated
by the charts due to pressure drop across the solenoid
valves, nozzle diaphragm check valves, nozzle screens,
etc.
•
Enter MINIMUM application TEST SPEED into con sole.
Turn rotary switch to TEST SPEED position. Use the “+”
or “-” button to enter minimum application speed. Do
not exit calibration mode. (Remember, the minimum
application speed is not normally less than half of the
maximum application speed.)
•
Turn booms ON (make certain system is in Manual
mode), turn rotary switch to APP. RATE position and hold
“-” button for approximately 30 seconds to completely
open the servo valve (control valve). (Maximum bypass
al lowed - min i mum flow output to booms.) The display
should now read less than the desired application rate.
•
It is not normally a problem if the application rate goes
all the way to zero when holding the “-” button for 30
sec onds, as long as it goes back up when the “+” but ton
is held.
CAN’T GET THERE?
If holding the “-” button does not get the application rate
to go below the desired ap pli ca tion rate, please refer to
Troubleshooting Plumbing.
•
Enter TARGET application TEST SPEED into con sole. Turn
booms OFF. Turn rotary switch to TEST SPEED position.
Use the “+” or “-” button to enter target application
speed. Do not exit calibration mode.
•
Select automatic “AUTO” control mode, turn booms ON
and turn rotary switch to APP. RATE position. The console
should take control and lock-on to your calibrated target
application rate.
•
Press the “+” button and release. The display will
momentarily show the new target rate (target rate +
ad just rate) and then lock on to that rate.
•
Press the “-” button and release. The display will mo men-
tari ly show the new target rate (target rate - ad just rate)
and then lock on to that rate.
•
If the application rate was correctly displayed dur ing
man u al “MAN” control mode, but registered too high in
automatic “AUTO” control mode, the calibration val ue
for MIN FLOW is set too high.
At this point, the Pre-Field System Check-Out is complete.
TEST SPEED will automatically cancel when you exit the CAL
mode or when power to the console is turned OFF.
36
Calibration
(cont)
Pre-Field Sys tem Checkout
Содержание MT-2400 LR
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