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TASC-6600
User Manual
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User Manual
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TeeJet TASC-6600 User Manual

MID-TECH
MIDWEST TECHNOLOGIES, INC.
TASC-6000, 6300, & 6600
Total Application Sprayer Control System
User Guide
PN - 98-05010
CE & STANDARD VERSION
Flow
RATE
CHEMICAL APPLICATORS
123
.
Gal./
4 5 6
-Ac
MIDWEST TECHNOLOGIES, INC.
Alt.­Rate
ON OFF
MID-TECH
TASC-6600
TOTAL APPLICATION
SPRAYER CONTROL
®
ON OPERATE INC.
OFF SET- UP
CHEMICALS
Chem. Rate Appl. Rate
Chem. Applied
Area
Speed
123456789
BOOMS
%Rate
Scan
Test Speed
DISPLAY SELECTOR
Total Applied
Distance
Prime
DEC.
CARRIER
Width
Midwest Technologies, Inc. of Illinois
2733 East Ash St. - Springfield, IL 62703
Phone 217-753-8424 - Fax 217-753-8426
www.mid-tech.com
TASC MANUAL - CHANGE LOG
DATE: Revision PAGES AFFECTED: SW Version:
5/26/00 1 New Manual. 3.21
II
TASC-6000, 6300, 6600
98-05010
Rev. - 1
TABLE OF CONTENTS
TASC MANUAL - CHANGE LOG ....................................................................................................................................... II
TABLE OF CONTENTS ....................................................................................................................................................... III
1.0 SWITCHES AND CONTROLS ..................................................................................................................................... 1-1
1.1 POWER SWITCH .................................................................................................................................................. 1-1
1.2 MODE SELECTOR OPERATE/SET- UP SWITCH ................................................................................................. 1-1
1.3 INC/DEC SWITCH ................................................................................................................................................. 1-1
1.4 DISPLAY SELECTOR ............................................................................................................................................ 1-1
1.4.1 DISPLAY SELECTOR FUNCTIONS IN OPERATE MODE .......................................................................... 1-2
1.4.2 DISPLAY SELECTOR FUNCTIONS IN SET UP MODE .............................................................................. 1-3
1.5 BOOM SECTION “ON/OFF” INDICATORS ........................................................................................................ 1-4
1.6 INJECTION PUMP SWITCHES (TASC 6300 and 6600 only) ............................................................................... 1-4
1.7 STATUS SWITCH ................................................................................................................................................. 1-4
1.8 GROUND SPEED OVERRIDE SWITCH ................................................................................................................ 1-5
2.0 CALIBRATION AND SET UP ...................................................................................................................................... 2-1
2.1 ENGLISH AND METRIC UNITS ...........................................................................................................................2-1
2.1.1 UNITS FOR EACH POSITION .................................................................................................................... 2-1
2.1.2 CHANGING UNITS ..................................................................................................................................... 2-1
2.2 PERISTALTIC AND NON-PERISTALTIC INJECTION PUMP MODES ................................................................2-1
2.3 SETTING APPLICATION RATES ......................................................................................................................... 2-2
2.3.1 SETTING CARRIER APPLICATION RATE ................................................................................................. 2-2
2.3.2 SETTING CHEMICAL APPLICATION RATE ............................................................................................. 2-2
2.3.3 SETTING ALTERNATE CHEMICAL APPLICATION RATE ...................................................................... 2-3
2.4 SETTING THE % RATE CHANGE OF THE CHEMICAL INJECTION PUMPS & THE CARRIER ........................ 2-3
2.5 SETTING BOOM WIDTHS ................................................................................................................................... 2-4
2.6 FLOW METER CALIBRATION ............................................................................................................................ 2-4
2.6.1 TYPICAL FLOWMETER CALIBRATION NUMBERS (for water) .............................................................. 2-5
2.6.2 FLOW METER CALIBRATION PROCEDURE ............................................................................................2-5
2.7 DISTANCE CALIBRATION, GROUND SPEED SENSOR ......................................................................................2-6
2.7.1 GENERAL CONSIDERATIONS AND INITIAL CALIBRATION NUMBERS .............................................. 2-6
2.7.2 DISTANCE CALIBRATION PROCEDURE .................................................................................................. 2-7
2.8 INJECTION PUMP CALIBRATION (TASC-6300 & 6600 ONLY) .......................................................................... 2-7
2.8.1 TYPICAL PUMP CALIBRATION NUMBERS, PC# .................................................................................... 2-8
2.8.2 PUMP CALIBRATION, FIELD PROCEDURE .............................................................................................. 2-8
2.8.3 ESTABLISHING THE “PRIME” VOLUME FOR EACH INJECTION PUMP .............................................. 2-10
2.9 SETTING THE "HOLD/CLOSE" RESPONSE OF THE FLOW CONTROL VALVE ............................................... 2-12
2.9.1 STATUS SWITCH ..................................................................................................................................... 2-12
2.9.2 ALL BOOMS "OFF" ................................................................................................................................. . 2-13
2.10 SETTING THE GROUND SPEED OVERRIDE "GSO" VALUE. ........................................................................... 2-13
2.11. SETTING AUTO POWER DOWN TIME ........................................................................................................... 2-14
2.12 REFLOW MODE ............................................................................................................................................... 2-14
2.12.1. DESCRIPTION ........................................................................................................................................ 2-14
2.12.2. REFLOW SET UP ................................................................................................................................... 2-15
2.12.3. ESTABLISHING THE REFLOW OPTION ............................................................................................... 2-15
2.12.4. CANCELLING THE REFLOW OPTION .................................................................................................. 2-15
2.12 OPERATING UNDER EXTERNAL RATE COMMANDS .................................................................................. 2-16
III
98-05010
TASC-6000, 6300, 6600
Rev. - 1
3.0. OPERATION ................................................................................................................................................................3-1
3.1. NORMAL START UP AND OPERATION ............................................................................................................ 3-1
3.2. CHANGING ACTIVE BOOM SECTIONS .............................................................................................................3-1
3.3. SELECTING DIFFERENT CHEMICAL COMBINATIONS ................................................................................... 3-1
3.4. CHANGING THE APPLICATION RATE “ON THE GO” ...................................................................................... 3-2
3.4.1. CHANGING APPLICATION RATE OF THE MAIN CARRIER .................................................................. 3-2
3.4.2. CHANGING APPLICATION RATE OF THE INJECTED CHEMICALS (TASC 6300/6600 ONLY) .............. 3-2
3.4.2.1. CHANGING ALL INJECTION RATES SIMULTANEOUSLY ............................................................3-2
3.4.2.2. ALTERNATE RATES FOR INDIVIDUAL CHEMICALS .................................................................. 3-3
3.5. PRIMING THE INJECTION LINES (TASC 6300/6600 ONLY) ............................................................................... 3-3
3.6. GROUND SPEED OVERRIDE ............................................................................................................................... 3-4
3.7. PRIMING THE MAIN PUMP AND BOOM .......................................................................................................... 3-4
3.8. MANUAL OVERRIDE OF FLOW CONTROL VALVE ..........................................................................................3-5
4.0. MAINTENANCE .........................................................................................................................................................4-1
4.1. FLUSHING AND CLEANING ...............................................................................................................................4-1
4.2. INJECTION PUMPS ............................................................................................................................................. 4-1
4.2.1. WEEKLY PUMP MAINTENANCE ............................................................................................................. 4-1
4.2.2. SEASONAL PUMP MAINTENANCE ........................................................................................................ 4-2
4.2.3. PERIODIC PUMP MAINTENANCE ........................................................................................................... 4-2
4.3. CONTROL CONSOLE ........................................................................................................................................... 4-2
4.4. GROUND SPEED SENSOR ................................................................................................................................... 4-2
4.5. FLOWMETER ...................................................................................................................................................... 4-2
4.6. FLOW CONTROL VALVE ..................................................................................................................................... 4-3
4.7. WIRING HARNESS .............................................................................................................................................. 4-3
5.0 TASC ERROR MESSAGES, COMMON CONDITIONS AND SOLUTIONS ................................................................. 5-1
6.0. EMERGENCY OPERATIONS ....................................................................................................................................... 6-1
6.1. GROUND SPEED SENSOR FAILURE ...................................................................................................................6-1
6.2. FLOW CONTROL VALVE FAILURE .................................................................................................................... 6-2
6.3. FLOWMETER FAILURE ...................................................................................................................................... 6-2
A.0 SYSTEM DRAWINGS ................................................................................................................................................A-1
A.1 TASC 6300 SYSTEM WIRING DIAGRAM ......................................................................................................... A-2
A.2 TASC 6600 SYSTEM PLUMBING DIAGRAM ....................................................................................................A-3
A.3 REFLOW PLUMBING DIAGRAM ...................................................................................................................... A-4
A.4 FLUID OUNCES CONVERSION TABLE ............................................................................................................. A-5
A.5 TUBE SELECTION CHART .................................................................................................................................A-6
B.0. SYSTEM OVERVIEW ................................................................................................................................................. B-2
B.1. THE TASC SYSTEM CONTROLS BOTH CARRIER FLOW AND CHEMICAL INJECTION RATES .................. B-2
B.1.1. HOW A TASC-6000, 6300 or 6600 CONTROLS CARRIER APPLICATION RATE .................................... B-2
B.1.2. HOW A TASC-6300 AND 6600 CONTROLS CHEMICAL APPLICATION RATE .................................... B-3
B.2. TASC SYSTEM COMPONENT PARTS .............................................................................................................. B-4
B.2.1. THE TASC CONTROL CONSOLE ............................................................................................................ B-4
B.2.2. FLOWMETER ........................................................................................................................................... B-4
B.2.3. FLOW CONTROL VALVE ......................................................................................................................... B-5
B.2.4. GROUND SPEED SENSOR ........................................................................................................................ B-5
B.2.5. BOOM INTERFACE .................................................................................................................................. B-5
B.2.6. PRECISION INJECTION PUMPS .............................................................................................................. B-5
B.2.7. CHEMICAL CONTAINERS ...................................................................................................................... B-6
IV
TASC-6000, 6300, 6600
98-05010
Rev. - 1
C.0. INSTALLATION ........................................................................................................................................................ C-2
C.1. CONTROL CONSOLE INSTALLATION ............................................................................................................. C-2
C.1.1. CONSOLE MOUNTING ............................................................................................................................ C-2
C.1.2. CONSOLE CABLE ROUTING ................................................................................................................... C-3
C.2. FLOWMETER INSTALLATION ......................................................................................................................... C-4
C.3. FLOW CONTROL VALVE INSTALLATION ....................................................................................................... C-5
C.4. GROUND SPEED SENSOR INSTALLATION ...................................................................................................... C-5
C.5. BOOM CONTROL SWITCHES AND INTERFACE ............................................................................................ C-5
C.5.1. BOOM CONTROL SWITCH BOX ............................................................................................................ C-5
C.5.2. BOOM INTERFACE CABLE . .................................................................................................................... C-6
C.6. INJECTION PUMP INSTALLATION ................................................................................................................. C-6
C.6.1. SELECTING THE CORRECT PUMP FOR THE APPLICATION ................................................................ C-6
C.6.2. INJECTION PUMP LOCATION ................................................................................................................ C-7
C.6.3. CLEARANCE AND MOUNTING OF INJECTION PUMPS ...................................................................... C-7
C.6.4. INJECTION PUMP CABLE ROUTING ...................................................................................................... C-7
C.6.5. PRECISION PERISTALTIC INJECTION PUMP TUBING INSTALLATION .............................................. C-8
C.7. CHEMICAL CONTAINERS ................................................................................................................................ C-9
C.7.1. MOUNTING AND PLUMBING MID-TECH TANKS ................................................................................ C-9
C.7.2. GENERAL SUGGESTIONS FOR PLUMBING CHEMICAL TANKS ....................................................... C-10
D.0. TASC ROADSIDE/HANDGUN OPERATION ............................................................................................................ D-2
D.1 Modes of Operation ............................................................................................................................................. D-2
D.1.1 Normal ........................................................................................................................................................ D-2
D.1.2 Handgun ..................................................................................................................................................... D-2
D.2. HANDGUN MODE OPERATION ....................................................................................................................... D-3
D.2.1. HANDGUN MODE, SET-UP FUNCTIONS ............................................................................................... D-3
D.2.2. HANDGUN MODE, OPERATE FUNCTIONS .......................................................................................... D-3
D.2.3. HANDGUN MODE, SPECIAL CONSIDERATIONS: . ...............................................................................D-4
D.2.4. HANDGUN MODE, TYPICAL OPERATION: ...........................................................................................D-4
D.2.5. HANDGUN MODE, MANUAL VALVE OVERRIDE: ................................................................................ D-5
D.2.6. HANDGUN MODE, ERROR MESSAGES ................................................................................................. D-5
D.2.7. HANDGUN MODE, PRINTER OUTPUT SAMPLES ................................................................................ D-6
D.3. NORMAL MODE OPERATION ......................................................................................................................... D-6
D.3.1. NORMAL MODE, AUTOMATIC "PRESSURE" OPERATION ................................................................ D-6
D.3.2. NORMAL MODE, SPECIAL PURPOSE BOOM WIDTHS ....................................................................... D-7
D4 - ROADSIDE SYSTEM DIAGRAM ....................................................................................................................... D-8
D5 - ROADSIDE SYSTEM DIAGRAM W/MID-TECH SWITCHBOX ....................................................................... D-9
V
98-05010
Rev. - 1
TASC-6000, 6300, 6600
This page purposely left blank
VI
TASC-6000, 6300, 6600
1.0 SWITCHES AND CONTROLS
98-05010
Rev. - 1
Display
Flow
RATE
Gal./
CHEMICAL APPLICATORS
123
4 5 6
Injection Pump Switches
Power Switch
-Ac
.
MID-TECH
MIDWEST TECHNOLOGIES, INC.
TASC-6600
TOTAL APPLICATION
SPRAYER CONTROL
Alt.­Rate
ON OFF
Mode Selector
Switch
ON OPERATE INC.
®
OFF SET- UP
CHEMICALS
Chem. Rate Appl. Rate
Chem. Applied
Area
Speed
Scan
DISPLAY SELECTOR
1234567 89
BOOMS
%Rate
Test Speed
DEC.
Total Applied
Width
Distance
Prime
CARRIER
Increase/Decrease
switch
Display
Selector
Switch
Boom Indicators
1.1 POWER SWITCH
The power switch controls power to the console. The console has an "Auto Power Down" feature which powers the console off after an operator selectable time (default is 30 min) has elapsed. The console has a nonvolatile memory so it "remembers" the constants and data previously entered, even if the power is removed.
NOTE: The “Auto Power Down Feature is only available on the CE version of the console (CE designation label on back of console).
1.2 MODE SELECTOR OPERATE/SET- UP SWITCH
The Mode Selector switch (upper right) is used to switch between the OPERATE and SET-UP modes. When spraying, this switch must be in the OPERATE position. The SET- UP position is used for entering information into the console. In the SET-UP Mode, all pump operations (except calibration) are turned off and an Err message appears if a position which can not be programmed is selected.
1.3 INC/DEC SWITCH
The INC/DEC switch (upper right) is used to adjust the values appearing in the display. The INC/DEC switch is used in both OPERATE and SET-UP Modes.
This switch is also used to zero the accumulated areas, distance, and volumes by selecting the desired display and holding this switch in the DEC position until the display resets to zero, (approximately 3 sec).
1.4 DISPLAY SELECTOR
The Display Selector (right center) is used to select the various console functions that are to be displayed and adjusted.
1-1
98-05010
MID-TECH
MIDWEST TECHNOLOGIES, INC.
ON OFF
Alt.- Rate
TASC-6600
TOTAL APPLICATION SPRAYER CONTROL
1234567 89
BOOMS
6
Ac
®
OFF SET- UP
DEC.
ON OPERATE INC.
%Rate
DISPLAY SELECTOR
Speed
Area
Width
Distance
Chem. Applied
Test Speed
Prime
Total Applied
Chem. Rate Appl. Rate
CHEMICALS
CARRIER
Scan
MID-TECH
Ac
®
OFF SET- UP
DEC.
ON OPERATE INC.
MID-TECH
®
OFF SET- UP
DEC.
ON OPERATE INC.
Rev. - 1
1.4.1 DISPLAY SELECTOR FUNCTIONS IN OPERATE MODE
(Refer to Appendix D for these switch functions in "Handgun Mode".)
ON OPERATE INC.
OFF SET- UP DEC.
TASC-6000, 6300, 6600
Flow
RATE
CHEMICAL APPLICATORS
123
.
Gal./
CHEMICALS
Chem. Rate Appl. Rate
Chem. Applied
Area
4 5 6
Speed
Scan
DISPLAY SELECTOR
-Ac
MIDWEST TECHNOLOGIES, INC.
%Rate
Alt.-
Total Applied
Rate ON OFF
Distance
Prime Test Speed
MID-TECH
TASC-6600
TOTAL APPLICATION SPRAYER CONTROL
CARRIER
Width
ON OPERATE INC.
®
OFF SET- UP
DEC.
CHEMICALS
%Rate
Chem. Rate Appl. Rate
Chem. Applied
1234567 89
BOOMS
Area
Speed
Scan
DISPLAY SELECTOR
Total Applied
Width
Distance
Prime Test Speed
CARRIER
SPEED: The current vehicle speed.
AREA: Accumulated Area #1.*
CHEMICALS CHEM. APPLIED: The amount of chemical actually pumped by each injection pump. The display
cycles through each pump in sequence unless a specific pump switch is selected ON.*
CHEMICALS CHEM. RATE: The programmed application rate to be delivered by each injection pump. The display
cycles through each pump in sequence unless a specific pump switch is selected ON. An alternate rate can also be programmed for each pump. In order to view the Alternate rate, the individual pump switch must be set to the ALT.
RATE position.
CHEMICALS % RATE: The percent of target application rate at which all active injection pumps are operating. This
percentage can be changed up or down a preset amount by operating the INC/DEC switch.***
CARRIER APPL. RATE: The target application rate of the main carrier (including chemical). Once spraying opera-
tions have started, and main carrier flow is established, the actual measured flow rate of the sprayer will be displayed here.***
CARRIER TOTAL APPLIED: The actual volume of carrier, including chemical applied, as measured by the flow
meter.*
WIDTH: The active boom width. Depends on the actual boom sections selected ON and the individual widths pro-
gramed into each section.
DISTANCE: The accumulated distance.*
PRIME: This position is used during priming operations to fill the injector pump lines with chemical or to lock the
control valve open during main pump priming.
TEST SPEED: The speed the console uses for stationary tests of the sprayer.**
SCAN: The display scans SPEED, AREA, CHEMICALS-CHEM. APPLIED by active pumps, CHEMICALS-
CHEM. RATE of active pumps, CARRIER-APPL. RATE and CARRIER-VOLUME APPLIED. The display
holds at each position for approximately two seconds.
NOTES: * Totals can be zeroed in this mode.
** Values are programmable in this mode. *** Values changeable by a % increase or decrease.
1-2
TASC-6000, 6300, 6600
MID-TECH
MIDWEST TECHNOLOGIES, INC.
ON OFF
Alt.- Rate
TASC-6600
TOTAL APPLICATION
SPRAYER CONTROL
1234567 89
BOOMS
6
Ac
®
OFF SET- UP
DEC.
ON OPERATE INC.
%Rate
DISPLAY SELECTOR
Speed
Area
Width
Distance
Chem. Applied
Test Speed
Prime
Total Applied
Chem. Rate Appl. Rate
CHEMICALS
CARRIER
Scan
MID-TECH
Ac
®
OFF SET- UP
DEC.
ON OPERATE INC.
MID-TECH
®
OFF SET- UP
DEC.
ON OPERATE INC.
1.4.2 DISPLAY SELECTOR FUNCTIONS IN SET UP MODE
(Refer to Appendix D for these switch functions in "Handgun Mode".)
ON OPERATE INC.
OFF SET- UP DEC.
98-05010
Rev. - 1
Flow
RATE
CHEMICALS
CHEMICAL APPLICATORS
123
-Ac
.
Gal./
%Rate
Chem. Rate Appl. Rate
Chem. Applied
Area
4 5 6
Speed
Scan
DISPLAY SELECTOR
MIDWEST TECHNOLOGIES, INC.
TASC-6600
TOTAL APPLICATION SPRAYER CONTROL
Alt.-
Total Applied
Rate ON
Width
OFF
Distance
Prime Test Speed
MID-TECH
CARRIER
ON OPERATE INC.
®
OFF SET- UP
DEC.
CHEMICALS
%Rate
Chem. Rate Appl. Rate
Chem. Applied
1234567 89
BOOMS
Area
Speed
Scan
DISPLAY SELECTOR
Total Applied
Width
Distance
Prime Test Speed
CARRIER
SPEED: Ground Speed Override (GSO) Value
AREA: Accumulated Area #2.*
CHEMICALS CHEM. APPLIED: Injection pump calibration number for the pump that is turned ON. Err means no
pump is selected or more than one pump is selected.**
CHEMICALS CHEM. RATE: The volume per acre to be delivered by an individual injection pump. Each pump must
be selected ON in sequence. Two rates are programmable, one in each position of the injection pump switch: ON - Standard Rate or Alt. Rate - Alternate Rate. Err means no pump is selected or more than one pump is selected.**
CHEMICALS % RATE: The percent of change applied to all active injection pump application rates for each actuation
of the INC/DEC switch.**
CARRIER APPL. RATE: The target application rate of the main carrier, including injected chemical.**
CARRIER TOTAL APPLIED: The flow meter calibration number**
WIDTH: Individual boom section widths. The display cycles through the individual boom sections sequentially, unless
a particular boom switch is activated.**
DISTANCE: The current distance calibration number.**
PRIME: The prime volumes for the pump that is turned ON. Err means no pump is selected or more than one pump is
selected.**
TEST SPEED: The speed the console uses for stationary tests of the sprayer.**
SCAN: Err: This is an invalid switch combination.
NOTES: * Totals can be zeroed in this mode.
** Values are programmable in this mode. *** Values changeable by a % increase or decrease.
1-3
98-05010
Rev. - 1
1.5 BOOM SECTION “ON/OFF” INDICATORS
TASC-6000, 6300, 6600
Flow
RATE
.
Gal./
CHEMICAL APPLICATORS
123
4 5 6
Injection Pump Switches
-Ac
MIDWEST TECHNOLOGIES, INC.
TASC-6600
TOTAL APPLICATION
SPRAYER CONTROL
Alt.­Rate
ON OFF
MID-TECH
ON OPERATE INC.
®
OFF SET- UP
CHEMICALS
Chem. Rate Appl. Rate
Chem. Applied
Area
Speed
Scan
DISPLAY SELECTOR
1234567 89
BOOMS
%Rate
Test Speed
DEC.
Total Applied
Width
Distance
Prime
CARRIER
Boom Indicators
The boom section on/off indicators (lower right, labeled BOOMS), indicate which boom sections are active (turned on). There is a maximum of nine boom section positions available.
1.6 INJECTION PUMP SWITCHES (TASC 6300 and 6600 only)
(Refer to Appendix D for these switch functions in "Handgun Mode".)
The injection pump switches (lower left) are used to activate the injection pumps. Up to six separate injection pumps can be controlled by the TASC console. Each pump has its own product switch and indicator light. When the switch is in the down position, the injection pump is OFF. When the switch is in the ON position, the pump is pumping at the standard target rate, (the pump indicator light glows steadily). When the switch is in the Alt. Rate position, the pump is pumping at the alternate target rate (the indicator light blinks and the console beeps periodically, indicating a non-standard operation).
1.7 STATUS SWITCH
An externally mounted status switch can be used to control the injection pumps and the flow control valve. The switch must present a positive voltage (+12.0 VDC) status on the green or white wire of the boom interface cable. As long as this condition is present, TASC operates normally. If the voltage is interrupted, the TASC automatically stops the injection pumps. At the same time, TASC either "CLOSE's" the flow control valve or "HOLD's" it in its current position, depending on the response selected by the operator (See Section 2.9).
The intent of this feature is to allow the operator to control the operation of TASC through the normal operation of the vehicle. The status switch can be used to sense the "ON"/"OFF" condition of the main vehicle pump or the switch may sense an implement "UP"/"DOWN" condition. Use of the status switch can lessen the operator's work load under certain conditions.
1-4
TASC-6000, 6300, 6600
98-05010
Rev. - 1
1.8 GROUND SPEED OVERRIDE SWITCH
An optional ground speed override Switch can be used to temporarily operate the sprayer using a pre-selected "minimum (GSO) speed" rather than the actual speed registered by the ground speed sensor. The override feature is used to bring the sprayer on line quickly when starting from a dead stop or to maintain an adequate spray pattern when the vehicle is maneuvering at very low ground speeds. It can also be used to allow the operator to flush the sprayer from the cab with the vehicle stopped.
The control console operates normally as long as the ground speed override switch condition is open (OFF). Whenever the override switch is closed (ON) and the actual ground speed is cally selects the "GSO speed" value to control both carrier and injected chemical flow rates. As soon as the switch reverts to its normally open (OFF) condition, or the actual ground speed increases above the preset "GSO speed", the control console controls flow rates on the basis of the actual ground speed.
CAUTION: When traveling at a speed slower than the GSO speed setting, this feature will cause the product to be applied at a rate consistent with the GSO speed, rather than the true ground speed. When Ground Speed Over­ride is being used and the true ground speed is less than the preselected "GSO Speed", the console will sound an alarm and the display will flash a "Too Slow" message to warn the operator of possible over application.
less than "GSO speed", the control console automati-
1-5
98-05010
Rev. - 1
TASC-6000, 6300, 6600
This page purposely left blank
1-6
TASC-6000, 6300, 6600
98-05010
Rev. - 1
2.0 CALIBRATION AND SET UP
NOTE: PLEASE READ THROUGH THE FOLLOWING SECTIONS COMPLETELY BEFORE YOU BEGIN CALIBRATION!
The TASC Control Console must be calibrated for the various sensors used and programmed with certain information before it is ready to be used. The calibration and set up processes are not difficult, however; they must be followed precisely in order to get maximum accuracy out of the system.
2.1 ENGLISH AND METRIC UNITS
The TASC Control Console is capable of operating in two different units of measure, English and Metric.
2.1.1 UNITS FOR EACH POSITION
(Refer to Appendix D for these units in "Handgun Mode".)
FUNCTION U.S. METRIC
Speed Miles/Hour (MPH)* Kilometers/Hour (KPH)* Area Acres (-Ac)* Hectares (-Ha)* Chem. Applied Ounces-U.S. Gallons (TOTAL/Oz)* Chem. Rate Ounces/Acre (Oz-Ac)*
@
Appl. Rate U.S. Gallons/Acre (Flow/RATE Liters/Hectare (Flow/RATE/
GAL./ -Ac)* Liters-Ha)* Total Applied U.S. Gallons (TOTAL/Flow/Gal.)* Liters (TOTAL/Flow)* Width Inches-Feet (TOTAL/Boom/Ft.)* Meters (TOTAL/Boom/Meters)* Distance Feet-Miles (Dist./Ft.)*** Meters-Kilometers (Dist.)* Prime Ounces (Oz) Liters (Liters) Test Speed Miles/Hour (MPH) Kilometers/Hour (KPH)
#
Liters (TOTAL/Liters)* Liters/Acre (RATE/Liters-Ha)*
#
@
* Items in parenthesis are the abbreviations that appear on the screen. ** No units displayed *** No units displayed after roll over of feet to miles or meters to kilometers # TOTAL when channel in Non-Peristaltic
@
-Ac when channel is in Non-Peristaltic
2.1.2 CHANGING UNITS
To change units, set the Mode switch to OPERATE and the Display Selector to SPEED. The current speed units are be displayed. Holding the INC/DEC switch down for approximately 5 sec.causes the display to alternate between U.S and Metric modes (MPH and KPH). The mode being displayed when the INC/DEC switch is released will be selected.
2.2 PERISTALTIC AND NON-PERISTALTIC INJECTION PUMP MODES
Settingg Channel 1 - 6 Drive Method (TASC 6300/6600 Only)
The TASC 6300 and 6600 Chemical Applicator channels (1 - 6) can use two different drive methods, depending on the type of equipment being controlled by the individual channel. "Peristaltic Drive" is used for peristaltic injection pumps. "Non-Peristaltic Drive" is for future development. You should select the "peristaltic" drive method at this time.
2-1
98-05010
TASC-6000, 6300, 6600
Rev. - 1
A. Use the following switch settings to select the desired drive method (You should have to do this only once
unless you change your equipment configuration.).
Power OFF Mode selector SET-UP Display selector DISTANCE
B. Turn the rate selector switches, for any channels (1 - 6) that you want set to non-peristaltic to "ON". Any
channels left "OFF" are set to the peristaltic mode.
C. Hold the INC/DEC switch down while turning on the TASC power. After completing the start up routine, the
display settles on a series of o's and -'s. The o's correspond to the channels that are set to non-peristaltic drive and the -'s indicate peristaltic channels.
o o -
Indicates channel 1 and 2 are set to non-peristaltic drive and channel 3 is set for peristaltic.
D. If it is ever necessary to reset the channel configuration, simply repeat the above procedure selecting the desired
switch configuration.
E. Whenever the TASC power is turned ON, the console momentarily displays the drive status of the chemical
applicator channels (unless all channels are in peristaltic mode).
2.3 SETTING APPLICATION RATES
2.3.1 SETTING CARRIER APPLICATION RATE
TASC is designed to maintain a constant, preselected application rate for the carrier, including chemical, as it exits the sprayer. In order for TASC to do this, the operator must enter the desired carrier application rate. NOTE: The minimum
Carrier Rate must exceed the total Chemical Rate by at least one Gal/Ac (L/Ha).
A. Set the console switches to the following positions:
Power ON Mode Selector SET-UP Display Selector CARRIER, APPL. RATE
The display shows the current Carrier plus Chemical application rate (Gal/Ac or L/Ha).
B. Use the INC/DEC switch to set the value displayed to the new desired rate.
NOTE: Setting the Carrier Application Rate to 0.0 shuts off the flow control function.
2.3.2 SETTING CHEMICAL APPLICATION RATE
The TASC-6300 and 6600 consoles are designed to maintain a preset injection rate for each injection pump. To do this the operator must enter the desired Application Rate (Oz/Ac or L/Ha) for each pump.
A. Set the console switches to the following positions:
Power ON Mode Selector SET- UP Display Selector CHEMICALS, CHEM. RATE Pump Switch #1 CENTER, ON POSITION
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TASC-6000, 6300, 6600
The display shows the current Standard Application Rate (Oz/Ac or L/Ha) for Pump #1.
B. Use the INC/DEC switch to set the value displayed to the desired rate.
Example: 64.0 for 64 Fluid Oz. (2 qts.) per acre, (See Appendix A, Fluid Oz. Conversion Chart). Remember this is the
actual chemical rate and bears no relationship to the carrier rate.
C. Repeat steps A and B for the remaining injection pumps, turning off each pump off before setting the next one.
NOTE: The Mode switch must be moved back to OPERATE for the new rate to be registered by the console.
2.3.3 SETTING ALTERNATE CHEMICAL APPLICATION RATE
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The TASC-6300 and 6600 consoles are also designed to maintain a preset this the operator must enter the desired Alternate Rate (Oz/Ac or L/Ha) for each pump.
A. Set the console switches to the following positions:
Power ON Mode Selector SET- UP Display Selector CHEMICALS, CHEM. RATE Pump Switch #1 UP, ALT. RATE POSITION
The display shows the current Alternate Application Rate (Oz/Ac or L/Ha) for Pump #1.
B. Use the INC/DEC switch to set the value displayed to the desired rate. The alternate rate for injection pump #1 is
now established.
C. Repeat steps A and B for the remaining injection pumps, turning each completed pump off before setting the next
one.
2.4 SETTING THE % RATE CHANGE OF THE CHEMICAL INJECTION PUMPS & THE CARRIER
This feature allows the operator to change the application rate of all active injection pumps or the carrier “ON THE GO” with a simple actuation of the INC/DEC switch. The amount of change each switch actuation makes is proportional to the value programmed into this position, (e.g. 5 = 5% change in the target rate). For example, if the chemical application rate is set at 64.0 ounces per acre, a single press of the INC. switch, with the Display Selector in "Chemicals, % Rate", results in a change of application rate to 67.2 ounces per acre (64.0 + 5% = 67.2). If the Display Selector had been in the "Carrier, Appl. Rate" position the carrier rate would have increased by 5% of its programmed rate.
alternate rate for each injection pump. To do
NOTE: It is not recommended that the carrier rate be changed "on the go", while doing chemical injection, as momen­tary dramatic changes in chemical application rate can result.
A. Set the Console to the following positions;
Power ON Mode Selector SET- UP Display Selector CHEMICALS, % RATE
The display shows the current % change value.
B. Use the INC/DEC switch to set this number to the desired % change.
NOTE: The rate change function will affect either the normal injection rate or the alternate injection rate, depending on which position the pump switch is in.
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2.5 SETTING BOOM WIDTHS
The Mid-Tech TASC Control Console is designed to automatically compensate for changes in the swath width, caused by activating or deactivating separate sections of a multi-section spray boom. For the console to automatically respond to changes in swath width, it is necessary for the operator to set the individual boom section lengths into the console. Use the following procedure to define the boom lengths to the console.
A. Set the Console to the following positions;
Power ON Mode Selector SET-UP Display Selector WIDTH All Boom Switches (external) OFF
The display cycles through each boom position and displays its current width in inches.
B. As each boom position appears on the display, use the INC/DEC Switch to set the display to the appropriate
number of inches (meters) covered by that boom. Repeat for each section.
NOTE: Individual boom widths are entered in inches. The control console converts the total boom width to feet
when it is switched back to the Operate Mode and the booms are turned on.
C. Set all unused boom sections (up to a total of nine) to a width of zero “0” inches. This insures that an accidental
boom switch ON does not affect the control console.
D. Let the boom width display cycle through the boom sections until it shows “Boom C”. As the width of “C” is
displayed, it can be changed with the INC/DEC switch. This value is used by the control console to determine the operating speed for the injection pumps during calibration sequences (as long as none of the boom switches are turned ON). This value should be the normal operating width of the entire sprayer, in inches (meters).
E. The individual boom section widths are now established. Turn all boom switches to the ON position and return
to the OPERATE Mode, the new total boom width is displayed in feet (meters). If this does not agree with your total sprayer width, check the individual boom widths (steps B and C).
2.6 FLOW METER CALIBRATION
TASC must be calibrated for the flowmeter being used. The calibration number required by TASC is the actual number of electrical pulses per gallon generated by the flowmeter for each gallon of liquid that passes through the flowmeter. Flowmeters are calibrated for water at the factory. This number is to be considered an initial value. The actual flowmeter calibration number for your system may differ due to plumbing variations or other factors. If you have any doubts as to the
accuracy of the flowmeter calibration number, a field calibration/catch test should be performed using the actual carrier solution. This is particularly important if you are pre-mixing chemical with the carrier.
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2.6.1 TYPICAL FLOWMETER CALIBRATION NUMBERS (for water)
Standard Flowmeters
SIZE SUPPLIER CAL.# SIZE SUPPLIER CAL.# .75 inch (Mid-Tech) 396.9 3.00 inch(Mid-Tech) 5.0
1.00 inch (Mid-Tech) 153.1
1.50 inch (Mid-Tech) 38.8 1.25 inch (Raven) 75.0*
2.00 inch (Mid-Tech) 23.8 3.00 inch (Raven) 16.4*
Mid-Tech Rapid Check Flowmeters
SIZE RANGE CAL# SIZE RANGE CAL#
1.00 inch 0.75 - 5 gpm 3200 1.50 inch 2.6 - 53 gpm 361.9
1.00 inch 2.5 - 25 gpm 612.4 1.50 inch 9 - 90 gpm 155.2
1.50 inch2.5 - 16 gpm 800 2.00 inch 20.0 - 195 gpm 94.5
* Raven flow meters, use the factory calibration number divided by 10. All other flowmeters use the manufacturers' supplied information regarding the pulses per gallon (usually provided on a tag on the flowmeter).
Use the following procedure to enter the typical flowmeter calibration number.
A. Set the Console to the following positions;
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Power ON Mode Selector SET- UP Display Selector CARRIER, TOTAL APPLIED
B. Use the INC/DEC switch to select the desired flowmeter calibration number.
2.6.2 FLOW METER CALIBRATION PROCEDURE
Field calibration of the TASC flowmeter is relatively simple. Operators have successfully performed flowmeter calibrations using a second, calibrated, flowmeter, using a truck scale and calculating volumes based on weight and density of the liquid discharged, and by discharging into a marked, calibrated tank.
A method such as the following is recommended. It is necessary to pump and measure at least 100 gallons (400 liters) and as much as 500 gallons (2000 liters), depending on the accuracy required. The better the measurement accuracy of actual discharge and the more material pumped, the more accurate is the resulting calibration. For example: an actual measure­ment accurate to within 5 gallons (20 liters) while pumping and measuring 500 gallons (2000 liters) yields an accuracy of 1 %. A result within 5 gallons (20 liters) while using only 100 gallons (400 liters) results in an error of 5 %.
A. Disconnect the line to one of the booms and direct the output to an appropriate catch basin through a manually
adjustable valve. Adjust the valve for smooth flow with no error messages on the console.
B. Verify that the boom switches and injection pump switches are OFF; turn the Control Console ON; select the
SET-UP mode; rotate the display selector switch to CARRIER, TOTAL APPLIED.
C. The current flowmeter calibration number is displayed. Make sure it is the recommended initial calibration number
for the flowmeter installed in the system (Refer to the metal tag attached to the flowmeter.). Use the INC/DEC switch to adjust as necessary.
D. Select OPERATE with the mode selector switch. Hold the DEC switch down for three to five seconds to zero the
accumulated gallons display.
E. If the "HOLD on All Booms OFF" function has been activated for carrier valve, reset it to "CLOSE". (See section
2.9.2 of the manual if you are unsure about this; the factory setting is "CLOSE").
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F. Make sure there is enough liquid in the main tank to do the test; start the main carrier pump; rotate the display
selector switch to TEST SPEED; turn ON the boom switch. Allow the sprayer to discharge until the desired amount has been pumped; turn OFF the boom switches.
G. Rotate the display selector switch to CARRIER, TOTAL APPLIED. If the total shown on the console agrees
with the total discharge actually measured, no further action is necessary. The flowmeter is already calibrated.
H. If the indicated volume pumped does not agree with the actual volume pumped, calculate a corrected calibration
number as follows:
(INDICATED AMOUNT / MEASURED AMOUNT) X OLD CAL. # = NEW CAL. #
If the measured amount is more than the indicated amount, the calibration number should decrease. If the measured amount is less than the indicated amount, the calibration number should increase.
I. Set the mode selector to SET-UP and correct the calibration number using the INC/DEC switch. Return the mode
selector to OPERATE and the amount displayed should now match the amount measured. The flowmeter is now calibrated.
J. Write this number down for future reference. This is the number to use for these specific conditions (material and
sprayer configuration).
K. Further fine tuning of the calibration can be done based on field spraying experience. If liquid is consistently left
over after spraying a known number of acres, adjust the calibration number up slightly. If there is consistently too little liquid to cover the desired acres, adjust the calibration number down slightly.
RECORD THE FLOW METER CALIBRATION NUMBER HERE:
2.7 DISTANCE CALIBRATION, GROUND SPEED SENSOR
2.7.1 GENERAL CONSIDERATIONS AND INITIAL CALIBRATION NUMBERS
It is important to field calibrate the distance sensor to insure optimum accuracy! The distance calibration must be
periodically checked. This is especially important if the sensor has come loose or been repositioned (Radar Sensor), or if the tires have been changed (Wheel and Speedometer Sensor).
Use the following initial calibration settings to get started. For the radar this number will be pretty close. For the wheel speed sensor and the speedometer sensor the adjustment to this initial calibration number may be very large, depending on the configuration of the vehicle.
Dj RADAR - 1000 MID-TECH COMPACT RADAR - 779
WHEEL SENSOR & SPEEDOMETER SENSOR - 3500
A. Set TASC switches to the following settings:
Power ON Mode Selector SET-UP Display Selector DISTANCE
The display now shows the current distance calibration value.
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B. Use the INC/DEC switch to select the initial distance calibration value suggested. You are now ready to perform
the distance calibration.
2.7.2 DISTANCE CALIBRATION PROCEDURE
The following procedure is recommended by MIDWEST TECHNOLOGIES for establishing an accurate distance calibra­tion. NOTE: All pump and boom switches should remain OFF during the entire procedure.
A. Fill the main tank 1/2 full of water, to approximate actual load conditions. This minimizes the effect on the radar
mounting angle and/or actual working diameter of the tires as the main tank empties.
B. Measure out a known distance of 400 ft. (150 m) or more in a field or roadway. Make it an easy place to maneuver
the vehicle. The longer the distance, the more accurately the test can be performed. Keeping the distance in even hundreds of feet will make the calculations easier.
C. Drive the vehicle to the starting point of the distance range and stop.
D. Turn the Display Selector to the DISTANCE position and the Mode Select switch to SET-UP. The console
displays the current Distance Calibration Number. Record this number for future reference. As an example, assume this number is 1000.
E. Return the Mode Select switch to OPERATE and check to see that the accumulated distance is set at zero. If not,
reset it to zero using the INC/DEC switch.
F. Start driving. Drive the vehicle at a speed of between 5 and 10 mph (8 - 16 kph). The distance start to accumulate
in the display.
G. Stop the vehicle at the end marker. The display shows the accumulated distance. Compare this distance to the
actual Measured distance, to determine how much of a correction is necessary. For example, if an accumulated distance of 396 ft. (149 m) is shown after driving over a 400 ft. (150 m) range, the error in the distance calibration is 1.0% (.7%).
H. Calculate the new Distance Calibration Number using the following formula:
(Measured distance/Accumulated distance) x Old DC# = New DC#
If the accumulated distance is less than the measured distance the new Cal# will be larger.
Example: (400 / 396) x 1000 = 1010, the New DC#
NOTE: The same procedure is used, regardless of the type of distance sensor .
RECORD THE DISTANCE CALIBRATION NUMBER HERE:
2.8 INJECTION PUMP CALIBRATION (TASC-6300 & 6600 ONLY)
The pump calibration procedure "fine tunes" the precision injection pumps to ensure the highest possible accuracy of the TASC-6300 or 6600 system for your sprayer. It is important to understand that each of the injection pumps installed on a particular sprayer must be separately calibrated. It is also important to periodically check the calibration of the individual pumps to ensure they continue to perform properly. Checking the calibration is particularly important when the tubing in the pump chamber has been replaced or when the system is being activated after an extended downtime.
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2.8.1 TYPICAL PUMP CALIBRATION NUMBERS, PC#
The pump calibration number (PC#) is a value that relates to the volume of chemical output during each revolution of the injection pump and is used by the TASC Control Console to determine each pump’s actual discharge rate. Pump calibra­tion numbers will differ slightly from one pump to the next due to variations in plumbing, tube size, pump chambers, etc.
The following values are typical PC#’s you can expect to see after performing the field calibration procedure. If your pump calibration number differs from the typical range, check the calibration. Use these numbers for your initial pump calibra­tion numbers, before conducting the actual prime or pump calibration procedure.
MODEL # DESCRIPTION TYPICAL PC# RANGE
ISC-20 PUMP 0.2 to 20-Oz./Min. (1/4"Dia. Tube) 32.0 27/37 ISC-50 PUMP 2.6 to 53-Oz./Min. (1/4"Dia. Tube) 110.0 100/120 ISC-50 PUMP 1.5 to 29-Oz./Min. (3/16"Dia. Tube) 65.0 58/72 ISC-100 PUMP 1.0 to 100-Oz./Min. (3/8"Dia. Tube) 145.0 130/160 ISC-150 PUMP 1.5 to 150-Oz./Min. (3/8"Dia. Tube) 145.0 130/160 ISC-200 PUMP 6.4 to 128-Oz./Min. (3/8"Dia. Tube) 285.0 256/314 ISC-200 PUMP 10.7 to 213-Oz./Min. (1/2"Dia. Tube) 485.0 436/534 ISC-350 PUMP 22.0 to 220-Oz./Min. (3/8"Dia. Tube) 285.0 256/314 ISC-350 PUMP 37.0 to 370-Oz./Min. (1/2"Dia. Tube) 485.0 436/534
2.8.2 PUMP CALIBRATION, FIELD PROCEDURE
TO ENSURE AN ACCURATE CALIBRATION, PLEASE FOL­LOW THE PROCEDURE EXACTLY!
The following field procedure is recommended to check or calibrate the injection pumps. This procedure requires a catch basin or container of at least 60 Oz. with graduation marks. In this example, a 56 Oz. test is described. There is nothing magic about the 56 Oz. number, in fact, collecting more material leads to smaller measurement errors. However, it is important to get a very accurate measurement of the volume of fluid (Fl. oz.) collected. In this example we will be calibrat­ing Pump #1, the procedure is the same for all pumps.
NOTE: MID-TECH suggests doing all calibrations using water to keep the procedure as simple and safe as possible; however, it may be necessary to calibrate with the actual chemical if it is an extremely thick, heavy or viscous fluid.
Check the current Pump Calibration Number and Application Rate (pump to be calibrated), Boom Width “C”, and Test Speed values. These should be typical for your sprayer operations. If not, reset them to a typical value, (Refer to Sections
2.3.2. & 2.5 to view and enter these values).
The calibration is conducted with the vehicle STOPPED and the main carrier pump NOT running. To safeguard against backflushing and siphoning, SHUT OFF the feed line from the main tank to the main pump.
NOTE: Thoroughly flush all injection lines and fill with clean water before performing calibration procedure.
A. Make sure all chemical containers are filled with fresh, clean water, and they are connected to the proper injection
pumps. Turn all booms OFF (boom width "C" is used.)
B. Set the control console switches as follows:
Power ON Mode Selector OPERATE Display Selector CHEMICALS, CHEM, APPLIED Pump Switch #1 CENTER, ON POSITION
The accumulated volume for pump #1 will be displayed.
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TASC-6000, 6300, 6600
C. Use the INC/DEC switch to reset the display to zero. Select SET-UP with the Mode Selector switch. The current
pump calibration number is displayed. Now go back to the pump and perform the flush operation.
D. Disconnect the discharge line on the injection pump from the sprayer. (On most installations this can be accom-
plished by using a calibration valve to redirect the discharge flow.)
E. Open the cover on pump # 1 and place the calibration magnet on the “*” target depicted on the motor control
module. Allow the pump to run until satisfied the lines are flushed and filled with liquid. Remove the calibration magnet.
F. Return to the control console and select OPERATE with the Mode Selector switch. Use the INC/DEC switch to
zero the accumulated volume for pump #1 and again select SET-UP with the Mode Selector switch. Now go back to the pump and perform the test.
G. Be sure the supply tank for the pump being calibrated contains more than enough material to conduct the test.
Direct the discharge line from the injection pump into the graduated container.
H. Place the calibration magnet on the "*" target on top of the pump control module and allow the pump to dis-
charge into the calibration container. When enough material has been pumped, remove the calibration magnet. Verify the amount of liquid in the calibration container as observed on the marks on the side of the container (ie. 56 oz)
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I. Return to the console. Select the OPERATE Mode. The number displayed will be the “Indicated” Ounces from
Pump #1. If the console reading agrees with the calibration container the pump is calibrated. If the console reading is incorrect, calculate the new calibration number. For instance, if the Accumulated ounces reads 53 instead of 56 (which we collected), then we would divide the Actual Ounces by the Indicated Ounces and multiply that number by the old PC# to calculate the new PC#.
Actual Oz./Indicated Oz. x Old PC# = New PC#
If the Indicated Ounces is less than the Actual Ounces collected, the Cal# will increase.
Example: 56/53 x 145.0 = 153.2, the New PC#
J. To change the Pump Calibration Number, return to the SET -UP Mode and view the old Pump Calibration Number
(145.0 for example).
K. Use the INC/DEC switch to increase the PC# from 145.0 to 153.2.
L. Set the Mode Select switch back to OPERATE and the accumulated ounces will again be displayed. The console
recalculates the ounces accumulated and should now show the amount actually collected (56 in our example). If the displayed value of accumulated ounces is still off by a significant amount, repeat the procedure.
M. Turn OFF pump #1. Connect the injection pump discharge line to the sprayer.
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N. REPEAT THIS PROCEDURE (steps B through M) FOR THE REMAINING PUMPS.
O. Record the Pump Calibration Numbers Here:
PUMP 1
PUMP 2
PUMP 3
PUMP 4
PUMP 5
PUMP 6
TASC-6000, 6300, 6600
(NOTE: This calibration procedure can be conducted with one or more boom sections active.. This will not affect the accuracy of the calibration, however; the console will not allow any further opera­tions until the active boom sections are turned "OFF". This ensures the vehicle does not begin to spray by mistake. A message "BOOM OFF" will be displayed to remind the operator to close the boom valves.)
2.8.3 ESTABLISHING THE “PRIME” VOLUME FOR EACH INJECTION PUMP
The “PRIME” volume is the volume of material in the system, between the chemical tank and the injection point at the main boom supply line. Obviously, this volume will depend on the sizes of lines used, the size of the injection pump, and the distance between the tank and the injection point. There are two methods of establishing the “PRIME’ value.
A. CALCULATING THE “PRIME” VALUE
Calculate the volume of fluid needed to completely fill the line and pump, and convert this volume to fluid ounces, and use this calculated value directly. Calculate this volume using the following formula (all measurements in inches):
(Line diameter/2)
For example, let’s suppose we have a system where the line from the chemical container to the pump inlet is 1/2 inch diameter hose, 36 inches long. The pump tubing is 3/8 inch diameter, 25 inches long. And, the discharge line is 3/8 inch diameter, 24 inches long. We want to calculate the volume, in ounces, needed to prime the line from the chemical container to the discharge point.
2
X 3.1416 X Line length X 0.5541 = Volume in Fluid Ounces
(0.500/2)2 X 3.1416 X 36 X 0.5541 = 3.92 ounces (0.375/2)2 X 3.1416 X 25 X 0.5541 = 1.53 ounces (0.375/2)2 X 3.1416 X 24 X 0.5541 = 1.47 ounces
“PRIME” Volume = 6.9 ounces
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B. DIRECT MEASUREMENT OF THE “PRIME” VALUE
Actually measuring the amount of fluid needed to prime the injection line is the second, and more accurate method, of determining the “PRIME” value. To do this, first calibrate each injection pump using the procedure outlined in Section
2.8.2.; then, operate the pump in a controlled manner, allowing its discharge to be collected and measured. Ordinarily, this procedure would only need to be done once, unless there are major changes to the plumbing on your sprayer.
NOTE: MID-TECH suggests you do all your calibrations using water to keep the procedure as simple and safe as possible.
The following procedure ensures an accurate measurement of the volume of fluid needed to prime each injection pump. It should be followed exactly. The measurement is conducted with the vehicle running. To prevent backflushing and siphoning, shut off the feed line from the main tank to the main pump.
Check the current Pump Calibration Number and Application Rate (pump to be calibrated), Boom Width “C”, and Test Speed values. These should be typical for your sprayer operations. If not, reset them to a typical value, (Refer to Sections
2.3.2. & 2.5 to view and enter these values).
NOTE: Thoroughly flush all injection lines and fill with clean water before performing calibration procedure.
A. Make sure all chemical containers are filled with fresh, clean water, and they are connected to the proper injection
pumps. Make sure all boom switches are OFF.
stopped and the main carrier pump not
B. Disconnect the injection lines at the injection point in the main boom supply line.
C. Set the Control Console switches as follows:
Power ON Mode Selector OPERATE Display Selector CHEMICALS, CHEM, APPLIED Pump Switch #1 CENTER, ON POSITION (any individual pump can be selected)
The accumulated volume pumped by pump #1 will be displayed.
D. Use the INC/DEC switch to reset the display to zero. Select SET-UP with the Mode Selector switch. The current
pump calibration number is displayed. Now go back to the pump and perform the flush operation.
E . Open the cover on pump # 1 and place the calibration magnet on the “*” target depicted on the motor control
module. Allow the pump to operate until satisfied the lines are flushed and filled with fresh liquid. Remove the magnet to stop the pump.
F. Return to the control console and select OPERATE with the Mode Selector switch. Use the INC/DEC switch to
zero the accumulated volume for pump #1 and again select the SET-UP mode with the Mode Selector switch. The current pump calibration number is displayed. Now go back to the pump and perform the catch test.
G. Add foam marker dye to the water in each chemical container.
H. Place a collection container, graduated in ounces, under the discharge tube for pump #1.
(A rough calculation of “PRIME” vol. can be used to help chose the right sized container.)
I. Place the magnet provided on the “*” target on the pump control module. The pump will begin to operate.
J. Remove the magnet as soon as colored water begins to discharge from the tube. The pump will stop.
K. Read the volume of fluid collected in the graduated container. This volume is the “PRIME” value for pump #1.
Record this value.
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L. Proceed to measure the prime values for the remaining pumps, in sequence, using the procedure outlined in items
C through K above.
M. When all measurements are complete, reconnect the pump discharge lines to the injection points in the main
boom supply line.
N. Use the procedure outlined in 2.8.4. below, to set the recorded “PRIME” values into the console.
O. Record the Prime numbers Here:
Pump #1 - Prime# Pump #4 - Prime#
Pump #2 - Prime# Pump #5 - Prime#
Pump #3 - Prime# Pump #6 - Prime#
2.8.4 SETTING “PRIME” VALUES IN THE CONSOLE MEMORY
A. Set the console switches to the following positions:
Power ON Mode Selector SET- UP Display Selector PRIME Pump Switch #1 CENTER, ON POSITION
The display will show the current prime volume (Oz) for Pump #1
B. Use the INC/DEC switch to choose the value desired. Turn Pump #1 switch OFF.
C. View and reset all injection pump PRIME values using the procedure in A and B above.
2.9 SETTING THE "HOLD/CLOSE" RESPONSE OF THE FLOW CONTROL VALVE
The operator can select a "HOLD" or "CLOSE" response of the Flow Control Valve to both the Status Switch and to an All Booms "OFF" condition. These responses are independent of each other, allowing the operator to select a "HOLD" condition for one and a "CLOSE" for the other. Careful consideration should be given to both conditions and the appropriate response selected for your spraying application. NOTE: In both cases the Chemical Injections Pumps will
stop automatically.
2.9.1 STATUS SWITCH
When the "HOLD" condition is selected, activation of the Status Switch will HOLD the Flow Control Valve in its current position. The valve does not close even though the vehicle speed may drop to zero. Then, when the Status Switch is deactivated the Flow Control Valve is already open and Carrier Flow is instantaneous. This response assumes that some other device is used to stop the carrier flow.
When the "CLOSE" condition is selected, activation of the Status Switch automatically causes the Flow Control Valve to CLOSE. This response is preferred when it is necessary to use the Flow Control Valve to stop the Carrier Flow.
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