Land Manager Service Manual - DICKEY
Contents
1. Nozzle Pressure LAND MANAGER COMMON OPERATING QUESTIONS 3 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL Under Application Question My applicator has XR8004 nozzles with 20 spacing on two booms I m using 40 for Nozzle Pressure and 4 for Nozzle Con stant My pressure sensor is mounted between the Dj valve and the boom shutoff valves have found that am under applying What is wrong and how do correct the problem W hat is being seen here is a difference in pressure between the pressure sensor and the nozzle Pressure drops occur in any sprayer and the distance from sensor to nozzle determines the amount of the loss In this case the system is controlling the application based on the pressure at the sensor but the nozzles with a lower pressure are under applying To correct this problem either move the sensor to the boom next to a nozzle or do a catch test at the pressure that you have entered into NOZZLE PRESSURE Catch a few nozzles on each boom average the results and enter the average flow rate per gallon as your Nozzle Constant This method compensate for pressure losses that may be occurring Valve Full Open Alarm Question I m getting the alarm before the upper pressure limit is reached What is causing this The alarm means the control valve is fully open This indication normally occurs when the pressure requirement is greater than the system can produce H owever a damaged pressure sensor or a2. Abnormal Pressure D isplay not match the console Question After installing check valves on my sprayer the console indicates pressure when I m not spraying Why This is common on machines with check valves no drip nozzles air stops etc These systems continue to hold pressure on the boom and due to the pressure at the sensor cause a display reading all the time even if you are not spraying It is also important to note that large changes in barometric pressure and temperature En B could cause a significate shift Definition of Capacities Question Please define Nozzle Pressure and Nozzle constant These two setup positions describe what nozzles you are using Simply stated the N ozzle Pressure is only a pressure reference any pressure will due The Nozzle constant is how much water in gallons flow out of that nozzle in one minute at that pressure reference From these two numbers the console determines the flow rate from that nozzle at any given pressure Question Does the pressure entered in Nozzle Pressure have to match the pressure being sprayed Is there an ideal pres sure that can use No it does not Y ou can enter any pressure that you like into Nozzle Pressure however it is best to use a pressure that is within the working limits of the nozzle you have selected There really is no ideal pressure but 40 PSI is probably the most popular choice Just remember to use the correct flow rate for the pressure se lected
3. drawn Check all connections to ensure good contacts at the connec tors Inspect the battery connections very carefully and clean contacts as necessary SHORT IN SYSTEM 1 Fuse blows immediately To isolate the problem disconnect all sensors and M ain cable but not the Power RS 232 cable This cable is necessary to supply battery power to the console Replace the fuse 2 Fuse continues to blow The console or Power RS 232 cable contains the short Disconnect the cable and check with an ohmmeter If no short is found in the cable replace the console 3 Fuse no longer blows After disconnecting all sensors and cables except battery and the fuse does not blow the short is indicated in the disconnected cables or one of the sensors With power on reconnect the M ain connector and then each sensor cable one at a time When the fuse blows again that sensor or cable contains the short See correct harnessing diagram to trace the wiring ERROR MESSAGE CANNOT BE CLEARED 1 Damaged sensor or incorrectly installed Correct installation or repair replace the sensor 2 Sensor not receiving 12 Volts Check for 12 V olts at the sensor See correct harnessing diagram If voltage is not present check cable for damage or a faulty connection LAND MANAGER BASIC SYSTEM 5 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL 3 Signal line GRN wire is open or shorted Check the green wire for continuity or a short
4. replace the sensor LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL D CKEY john LAND MANAGER 11001 1168 199906 Revision A TOPIC 4 CONSOLE During troubleshooting the ability to quickly verify console performance becomes very important in isolating system failures Console operation can be proven either by substituting a different console or by using a special wrap around cable test module The wrap around cable allows a special self test routine to check normal console operation If the test proves normal the console is eliminated as a possible cause and troubleshooting can proceed to the harness and other system components If the tests fail remove the console from the system and tag for immediate repair CONNECTING THE WRAP AROUND CABLE The wrap around cable is a small black box with three sets of cables with connectors The two large connectors replace the harness connectors at the bottom of the Land M anager and are keyed to prevent reversal The third cable containing a fuse link connects to 12 volt power or battery When power is turned on the Land M anager recognizes the presence of wrap around cable and automatically begins testing Figure 2 Connecting the Wrap Around Cable Warp Armand Box art Nem ber XXXXXX Positive Battery Temisal CONSOLE 11 OPERATOR S TROUBLESHOOTING MANUAL RUNNING THE TEST After applying power each test automatically runs
5. When complete either a FAILURE or PASS displays with a prompt to press ENTER If sufficient failures occur to fill the screen M O R E displays at the top of the list Errors on a previous screen cannot be reviewed from the display After all functional tests finish a keypad test screen appears to allow dynamic testing each key on the front of the console 1 12 CONSOLE Connect 1 and 2 to the console connectors The connectors cannot be inserted incorrectly Connect the power cable to a 12 Volt source The red wire connects to the positive terminal the black wire to the negative terminal Turn the power on using the I O button on the console The console starts by displaying the DICK EY john logo and sounding a beep The next screen appearing reads FUNCTIONAL TEST The tests automatically follow When finished observe the results a If the display indicates PASS the console is functional and ready for operation Proceed to Step 5 b If the display indicates FAILED disconnect and tag the console for repair Depress ENTER to continue with the key pad test The screen displays three statements KEY PAD TEST PRESS KEY TWICE TO END TEST and TEST KEY NO KEY PRESS Depress each console key once except the I O button Each key should show an appropriate response on the display i e depressing the CLEAR key should display CLEAR When finished end the test by depressi
6. for field application If the control system is not functioning correctly first check the functionality of all other system mechanical devices 1 Check to make sure the ground speed sensor is functioning SYSTEM SENSORS AND ACTUATORS 9 OPERATOR S TROUBLESHOOTING MANUAL Safety Precautions For your own protection it is important that you carefully follow all safety precautions outlined in the Operator s manual when handling anhydrous ammonia Anhydrous ammonia can be very dangerous if improperly handled All safety procedures should be carefully observed Serious injury is prevent able by observing a few simple rules 10 SYSTEM SENSORS AND ACTUATORS 2 Check the functionality of the pressure transducer on a sprayer system or the flow meter on the anhydrous system 3 Check to be sure the control valve is operating in the manual mode Solicit the aid of an extra person H old the switch on the switch module in the MANUAL position The control valve should be heard opening for approximately 1 5 seconds Release the switch the control valve should close in 1 5 seconds If the motor in the valve is not running then the control valve actuator or the cabling is defective CHECKING THE FLOWMETER ANHYDROUS AMMONIA The flowmeter sensor senses the rotational rate of a paddle wheel anhydrous ammonia passes through the line If the flowmeter ceases to produce pulses begin by checking the wiring to the flowmeter
7. from the sensor back to the console 4 Application Rate or other Sensor is defective If the above checks do not reveal the problem replace the respective sensor SYSTEM DOES NOT OPERATE IN AUTO ONLY IN MANUAL 1 Ensure the ground speed signal is present If the ground speed indicates on the display check the switch module and then suspect a faulty console 2 No ground speed signal is present Unplug the radar unit and check for 12 V olts at the radar cable connector See correct harnessing diagram If no 12 V olts is present check continuity of the cable or observe for damage R epair or replace as required 3 No ground speed signal is present on the GRN wire Check the Fg GRN pin from the sensor back to the console If continuity is absent or cable is shorted check the connections at the connector or suspect a damaged cable 4 Signal is not present at the sensor Replace the radar sensor and try again 5 Cable and sensor are normal Replace the console SYSTEM DOES NOT OPERATE IN AUTO OR MANUAL 1 Console Programming may be incorrect Be sure the channel is turned on Then check BOOM CONFIG 12V ON OFF under the CONFIG MENU Also check the operation of the implement switch 2 Check Master Switch Module cable and switch Ensure continuity from the connector and the module is present Also ensure no shorts between conductors exist C heck the switch for correct operation 3 Check main cable wiring
8. your understanding of overall system operation ANHYDROUS AMMONIA SYSTEM Question When selecting density do enter pounds of Nitrogen or pounds of Anhydrous Neither in the SYSTEM MENU under CONFIGURATION and then under ANHYDROUS you select DENSITY for either NITROGEN OR NH From this selection the Land M anager automatically determines the weight for display Also be certain to check TANK PRESSURE under CHANNEL SETUP in the SETUP mode Question Where do find the flow meter constant could not find it stamped on the body as indicated in the O perator s Manual The constant should be written on the side of the flowmeter body with a silver marker If unable to locate the value use 2 13 as a starting point until a calibration can be run Question Why do need a hydraulic electric or rope operated shutoff A second shutoff is needed in case of a control system failure Question over applied my product by 5 how do correct for it The K Factor can be adjusted to compensate for small errors of less than 10 Increase the value to raise the amount of material applied Decrease the value to lower the amount Question under over applied product The console displays a correct amount Where is the error This indicates DENSITY is incorrectly programmed or flowmeter calibation isin error Go to CONFIGURATION menu and check the DENSITY selection Likely itis indicating NITROGEN and should be NH or vice versa Also check TA
9. Carefully bleed off all ammonia See sidebar remove the flowmeter module With a small pencil or wire reach inside the venturi tube and spin the paddle wheel It should spin freely If not repair the cause If the wheel is found free replace the flowmeter module CHECKING THE FAN RPM SENSOR Check the fan sensor by waving a piece of metal quickly back and forth across the sensor s end while observing the console display Some reading should be observed Assuming the cabling is normal no reading indicates a faulty sensor CHECKING THE HOPPER LEVEL SENSOR A sensor failure is first detected at the console by an improper readout If this occurs try unplugging the sensor If no change occurs check the cabling If it does change replace the sensor If the display message is simply indicating low too soon or not soon enough inspect the mounting position of the sensor CHECKING THE PRESSURE TRANSDUCER Before checking a pressure sensor release all the pressure from the lines or completely remove the sensor from the boom and then perform a Zero Pres sure Calibration If the constant comes up 0000 check for 12 volts at the sensor connection on the harness and also check continuity on the green wire from the sensor connection to console connection See Wiring Diagram If 12 volts is not present check continuity of the power and ground wires If all harness checks are normal or if the Zero Pressure Calibration constant reads 1 000 or more
10. Check the wiring between the M aster Switch M odule and the console Check for open or shorted conductors See Wiring Diagram 4 Check the valve actuator Check for correct voltages and signals to the actuator See W iring Diagram 5 No 12 Volts is present to the actuator Check the power cable and the signal wires to the console 6 BASIC SYSTEM LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL vickeyjonn LAND MANAGER 11001 1168 199906 Revision A TOPIC 3 SYSTEM SENSORS AND ACTUATORS During normal system operation the alarm and console display indicates the status of the system sensors and product application devices If a failure occurs the operator is alerted and the problem can be quickly identified Before calling for assistance check the following list to locate and repair the failure CHECKING THE SWITCH MODULE This device consists of only the cable and a three position switch 1 From the console select SYSTEM mode SERVICE menu TROUBLESHOOTING menu and finally LOW LEVEL TEST V iew the M aster Switch as you change switch positions If the response is not correct OFF 00 AUTO 01 Manual 11 proceed with the next step 2 Open the Switch Module and verify the switch operation Use an ohmmeter to verify the switch contacts Check each switch position Figure 1 Checking the Master Switch OFFAITO MANUAL Y SWII CH 3 Visually inspect the cable for d
11. Connecting the Warp Around Cable nenea eee keke aaa 11 RUNNING Te Test nenea asia kanya aaa apa a at ae a 12 Topic 5 Harness and Repair 23 Console and H arness Layout eee aaa aaa e aaa e 13 Locating a Shorted Cable k lik icgdll ana aea caen catena aaa rana 13 Locating an open short within a cable mme nenea eke kk e 15 Sealing the Repaired Cable kA lilililil emana emana anemie AKA 16 List of Illustrations Figure 1 Checking the M aster Switch eee aaa aaa nara 7 Figure 2 Connecting the Wrap Around Cable mmm arena 11 Figure 3 Taping Sach lead ae eae 16 Figure 4 Sealing the Repair nenea ere aan aaa aa nana 17 Figure 5 Final Wrapping the Repair carena eee aaa ca eee 17 TABLE OF CONTENTS i OPERATOR S TROUBLESHOOTING MANUAL ii TABLE OF CONTENTS LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL dIcKEyjonn Density Constant Flow Sensor Constant Shutoff Safety K Factor Adjustment Incorrect ensity Constant Electric Shutoff LAND MANAGER 11001 1168 199906 Revision A TOPIC 1 COMMON OPERATING QUESTIONS This topic lists a series of frequently asked questions These are grouped by subject to provide easy reference in setting up your system for optimum operation O ften basic terms prove to be the point of confusion which can be cleared up with a little more information Reading the following should aid
12. NK PRESSURE in the CHANNEL SETUP menu of the SETUP mode and then flowmeter calibration Question Can use the OFF AUTO MANUAL Switch to operate my electric shutoff No COMMON OPERATING QUESTIONS 1 OPERATOR S TROUBLESHOOTING MANUAL GRANULAR SYSTEM Interchanging Parts Question Can GC 1000 or CC S100 parts be reused in a Land Man ager system Y es the radar and the hydraulic control valve with the use of a valve driver are directly interchangeable The application rate sensor can be used with the correct adapter cable Using Spinners Question Does the console control the spinners as well as the conveyor belt No the spinners are controlled manually Tests Calculations Disagree Question did two different drop tests and used the two formulas described in the O perator s manual for determining spreader constant The results calculated were two completely different numbers for spreader constants What did do wrong Be sure that the correct values are being used for each formula All the formulas will yield identical numbers Mounting Application Rate Sensor Question Can the application rate sensor be mounted on a con veyer shaft or must it be installed on the conveyer motor The rate sensor can be installed on any shaft that rotates in proportion to the conveyor travel rate N eed to Recalculate Question Does a spreader constant require recalculating if the rate sensor is moved to a different shaft Y es However the sh
13. Sprayer Spreader Control Systems Land Manager O perator s Troubleshooting Manual DICKEY john ORPORATION OPERATOR S TROUBLESHOOTING MANUAL pickey jonn LAND MANAGER 11001 1168 199906 Revision A Table of Contents Topic 1 Common Operating Questions ananas aenanaan ananas annannaenaea L Anhydrous Syster s xu ee iza a aa pa a ta lt n al a t 1 Granular System sic cacao a a i a n ca a a ta i a aE 2 Ciguid Sy Sterse ca d a edited ea b a pal aa 3 Topic 2 Basic System i cccsisdsscestcassesssnincersisssscsssvlucionteoiaassansadensasisaseanicannsdinade D Display does not turin ONM a Al eee aaa ed l yan da Kek aaa ai ain 5 System does not operate in AUTO only in MANUAL 6 System does not operate in AUTO 6 Topic 3 System Sensors and ActuatorS sssssssusssnssnsunununnnnununnnnnnnnanannnnanana 7 Checking the Switch Module nenea eee eee aaa e 7 Checking the Ground Speed Sensor eee eee e aaa 8 Checking the Lift Switch kenl an nan haaa yan r h wn arek seen aan e 8 Checking the A pplication R ate Sensor Granular Al 9 Checking the H ydraulic Control Valve Granular k l eee 9 Checking the Liquid Control Valve oo nenea eee eee aaa 9 Flowmeter Anhydrous Ammonia e eee en keke keka kake ka keka ka kak kak 10 Topic ala ran xul kak wa xa una a RR ine ne da Wa ERE KI ER RE ME WA LL
14. ach pin Fashion a jumper wire between the ground line and the signal line of the cable Be sure not to short the 12 volt line to ground Doing so results in blowing the main system fuse ntermittently make and break the connection between the ground and the signal lines as rapidly as possible The results are a series of random pulses which should gener ate some indication on the display If the display responds the system harness and console are normal meaning the application rate sensor is the cause CHECKING THE HYDRAULIC CONTROL VALVE GRANULAR The hydraulic control valve regulates the conveyor speed electrically via the console If any of the spreader components such as the hydraulic pump or hydraulic motors are not operating properly the control system may appear to be faulty Check that all the mechanical devices are operating normally before suspecting any of the control system components 1 Check that the valve operates in the manual mode 2 If not disconnect the cable to the actuator driver circuits and measure for drive signals If no signals are present on the three lines suspect the cables first and then the console If signals are observed on the lines try a new valve driver actuator If the control system functions normally in the MANUAL mode but does not open in the AUTO mode the problem may be a faulty ground speed input CHECKING THE LIQUID CONTROL VALVE The liquid control valve controls the liquid flow rate
15. aft used on must rotate smoothly with application U nder applying of product Question have discovered that am under applying just a little Is there a way to fine tune the system Simply adjust the spreader constant the same percentage as your application error Adjust up to increase the application rate down to decrease T his works if the error is within 10 Larger errors may Other Problens indicate other problems Question What are some other problems Larger application problems are normally traced directly to program ming errors wrong gate setting incorrect ground speed signal or a Conveyor Surging faulty rate sensor Question The conveyor on the truck has recently started surging The hydraulics seem to be normal What could cause the prob lem M ake sure the rate sensor is not rocking back and forth on its mounting Also check to see the coupling is not slipping on the rate sensor shaft 2 COMMON OPERATING QUESTIONS LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL LIQUID SYSTEM Parts Interchangeability Question Do any SC 1000 or CCS 100 parts work with the Land Manager Y es the SC 1000 hydraulic valve with driver pressure sensor radar and all other CCS 100 components work with the Land Zero Pressure Calibration M anager system Question Do have to do the Zero Pressure Calibration each time fill the tank No Set it once and forget it unless the pressure on the boom does
16. ain Investigate that cable for the short To locate the actual short proceed as follows To locate a signal line short A sensor signal line can be shorted to either to ground or to 12V but does not normally blow a fuse Either condition renders the sensor inoperative If only one sensor is inoperative the short must be within that sensor or its cable If more than one sensor is inoperative the problem is closer to the console and the main cable should be sus pected To isolate proceed as follows 1 Turn off system power and disconnect the failed sensor 2 Measure the resistance between the pins at the connector of the sensor Readings of less than a few hundred ohms should be investigated as shorted conductors 3 If Step 2 indicates a normal sensor check the main cable Readings between the sensor line and ground or the sensor line and power should measure a high resistance If not disconnect the main cable from the console and repeat the test If the condition persists the cable is shorted To locate an open line An open line 12V Gnd or signal also renders a sensor s inopera tive If only one sensor is inoperative the open must be within that sensor or its cable If more than one sensor is inoperative the problem is closer to the console and the main cable should be suspect To isolate proceed as follows 1 Disconnect the faulty sensor 2 Measure resistance between the power signal and ground leads A high
17. amage Use the ohmmeter to check integrity of the cable Check the cable for shorts between wires and then check each wire for an open condition SYSTEM SENSORS AND ACTUATORS 7 OPERATOR S TROUBLESHOOTING MANUAL 8 SYSTEM SENSORS AND ACTUATORS CHECKING THE GROUND SPEED SENSOR One of three types of Ground speed sensors may be used 1 radar sensor 2 in line speedometer drive sensor or 3 magnetic distance sensor 1 2 Begin by visually inspecting the cable and sensor for damage Check all connections and inspect sensor mounting When inspecting a radar sensor check for excessive vibration Start the vehicle engine and slowly increase engine RPM to the governed rate or operating RPM while observing the console display The display should remain at zero If not the radar mounting is not secure If no ground speed value displays during operation check the condition of the harness A simple test can be conducted to prove harness integrity to the console by using a small jumper wire Disconnect the ground speed sensor from the main harness At the main harness connector identify each pin Fashion a jumper wire between the ground line and the signal line of the cable Be sure not to short the 12 volt line to ground Doing so results in blowing the main system fuse ntermittently make and break the connection between the ground and the signal lines as rapidly as possible The results are a series of random pulses w
18. ctuator can also be the cause To eliminate the sensor check the pressure on the console against the manual gauge on your boom if you have one If the pressure on the manual gauge is greater than the console pressure check the sensor If the console and manual gauge match then the sprayer is unable to develop the correct pressure Check to see the actuator is opening completely Then check for slipping pumps hose restrictions sparge valve open too far etc Question When setting my pressure limits the speed ranges dis played are very high or low How do fix this Check your Nozzle Constant It is either too high or too low Also be sure you don t have a misplaced decimal point Speed Range Display 4 COMMON OPERATING QUESTIONS LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL vickeyjonn TOPIC 2 BASIC SYSTEM This topic lists a few basic problems to check before calling for assistance The list below is notin any particular order Scanning through these possible problems may suggest a corrective action for returning the system to normal again If the problem cannot be solved call Dickey john for assistance DISPLAY DOES NOT TURN ON 1 Blown fuse Check fuse in positive battery harness lead and replace with proper size fuse if blown If it blows again check for a shorted sensor lead or a damage cable See below 2 Fuse OK If the fuse is normal the indication is no current is being
19. folding the cable in half so that the two connector ends lay side by side Check for continuity through each conductor U se wire colors or harness drawings to identify the correct conductor If the cable is not easily folded in half because of being strapped down short pins together at one connector with a small wire jumper and check for continuity through the two conductors at the other connector R epeat until all conductors are verified If a break is found isolate it to a single conductor Locate the break within a wire Connect one lead of an ohmmeter to each end of the suspected broken wire M ove along the harness flexing the cable by hand while observing the ohmmeter for an indication A response indicates the damaged area If an area cannot be determined select the center U se a sharp object such as a straight pin or knife tip to pierce through the insulation It may be necessary to carefully slit the outer jacket of the cable to reach the suspected wire Remember the opening later requires repair If the cable is strapped down add a length of wire to one ohmmeter lead to lengthen its reach HARNESS AND REPAIR 15 OPERATOR S TROUBLESHOOTING MANUAL 5 Determine which cable half contains the break Check continuity between the pierced point and the cable connector If no continuity is present move the ohmmeter lead toward the connector i e half way W hen continuity is obtained the break is between the last two read
20. gnal lines are unique to each sensor and run separately to the console LOCATING A SHORTED CABLE A shorted sensor cable renders the sensor inoperative or may cause system failure by blowing the main power fuse Three basic types of shorts may appear within a sensor 1 power to ground 2 power to signal and 3 signal to ground To locate a power ground short 1 Check the main power and actuator fuses If the a actuator fuse s is blown the short is isolated to that actuator cable or actuator Unplug the actuator and try another fuse of proper size If the fuse blows again the actuator cable is shorted If not the actuator is shorted If the main power fuse is blown proceed to Step 2 2 Unplug the main cable J1 from the console and install a new fuse If the fuse blows again the short is either in the power cable or the console Disconnect 2 from the console and repeat the test with a new fuse If the fuse blows the cable has a short if not the console has an internal short If both the cable and console prove normal proceed to Step 3 HARNESS AND REPAIR 13 OPERATOR S TROUBLESHOOTING MANUAL 14 HARNESSES AND REPAIR 3 Unplug all the sensor and extension cables and install a new fuse If the fuse blows with all sensors and extension cables disconnected the short is isolated to the main harness 4 Begin reconnecting each connector one at a time When the line containing the short is connected the fuse blows ag
21. hich should generate some speed indication on the display If the display responds the system harness and console are normal indicating the ground speed sensor is at fault If a using a magnetic distance sensor check the sensor with an ohmmeter Connect the ohmmeter directly across the sensor element The reading should be infinity when the magnet is away from the sensor and zero ohms when the magnet is next to the sensor Also a click should be heard when a the magnet is passed near the sensor CHECKING THE LIFT SWITCH The microswitch closure integrity can be checked with an ohmmeter 1 2 Disconnect the lift switch from the harness at the connector Connect an ohmmeter across the terminals of the lift switch and manually open and close the switch The ohmmeter should show near zero resistance when the switch closes and infinity when open LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL LAND MANAGER 11001 1168 199906 Revision A CHECKING THE APPLICATION RATE SENSOR GRANULAR The application rate sensor is mounted on the drive shaft of the conveyor to monitor the rotational rate of the shaft 1 If no application rate displays during operation check the condi tion of the harness A simple test can be conducted to prove harness integrity to the console by using a small jumper wire Disconnect the application sensor from the main harness At the main harness connector identify e
22. ings Finalize by working toward the break until the exact location is pinpointed SEALING THE REPAIRED CABLE A damaged or cut cable can be repaired in the field using the following procedure This type of repair is limited to cables only Do not attempt to repair any wiring inside the hydraulic control valve the ground speed sensor or the application rate sensor Doing so breaks the seals and voids the warranty Do not attempt to repair cable connectors The following method of repairing cables is for temporary use only Units with new cables or new extension cables must be ordered as soon as possible otherwise chemicals may enter the repaired area and damage components Always use rosin core solder for making cable repairs NEVER USE ACID CORE SOLDER 1 Carefully cut away the cable cover at the damaged area Strip about 1 2 inch of insulation from damaged lead s Do not cut the wire strands Clean about two inches of the cable cover and wire ends 2 Twist the two bare leads together solder and tape for each damaged lead Be certain to match wire colors Then solder the leads Tape each repaired lead with vinyl electrical tape Figure 3 Taping each lead REY qH os it DPI eat wha 16 HARNESSES AND REPAIR LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL 3 Add a layer of vinyl electrical tape up to the cable cover at each end of the repaired section M a
23. ke paper trough as shown in the Figure then apply silastic compound over the repaired section Be sure to use enough silastic compound to fill the open ends of the cable Figure 4 Sealing the Repair 4 Allow silastic compound to dry then use vinyl electrical tape to completely cover the repaired area Apply tape to at least two inches beyond each end of the cable opening Secure repaired cable in a manner to protect the damage from reoccur ring 5 Tape Final Repair This procedure is intended only for temporary repair Replacement of the complete cable is highly recommended Failure to do so may result in damage to the system since active chemicals can creep up through the cable and into one or more of the system units Figure 5 Final Wrapping the Repair LAND MANAGER HARNESS AND REPAIR 17 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL 18 HARNESSES AND REPAIR LAND MANAGER 11001 1168 199906 Revision A DICKEY john P O BOX 10 5200 DICKEY john Road Auburn IL 62615 Telephone 217 438 3371 Fax 217 438 6012 In either the USA or Canada call 800 637 3302 11001 1168 199906
24. ng any key twice The screen displays TEST COMPLETE Remove power and discon nect the wrap around cable LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL DICKEY john amp LAND MANAGER 11001 1168 199906 Revision A TOPIC 5 HARNESSES AND REPAIR M ost cable failures are categorized as either a short or open circuit If a either condition occurs within a cable locating the actual fault can be tedious and frustrating W hen encountering an intermittent break locating the problem may be difficult but ultimately must be treated as an open circuit After locating the break or short cable replacement should be planned but temporary repair can be performed in order to continue working In repairing a good splice and a weath er tight seal is extremely important The following paragraphs describe how to locate cable faults and then repair properly CONSOLE AND HARNESS LAYOUT Before commencing wire tracing from the console to the sensors take a moment to study the general wiring scheme Refer to the correct wiring diagram in the foldouts of this manual Study the general wiring layout from the console to each sensor and particularly the wire colors to the sensor in question Each sensor generally uses a RED wire for 12 volt power a BLK wire for ground anda GRN wire for the signal line The power lines from most sensors connect to a common junction point within the harness while the si
25. resistance should be measured between each check but should not indicate a short 3 Turn the console on and measure voltage between the 12V signal and ground leads of the main cable A 12V reading between the power and ground terminals indicates those two lines are normal Some small voltage should be read on the signal line No reading indicates the signal line is open if the power and ground leads have been verified LAND MANAGER 11001 1168 199906 Revision A OPERATOR S TROUBLESHOOTING MANUAL LOCATING AN OPEN SHORT WITHIN A CABLE 1 LAND MANAGER 11001 1168 199906 Revision A Carefully inspect the cable for damage Observe cable for loose wires particularly at the connectors Check along the cable for a mangled area caught in the machinery or by sharp objects piercing the cable If a damaged area is found proceed to Step 6 If no damage is observed disconnect the cable at both ends Use an ohmmeter to check for shorts between conductors Check for shorts between all combinations of conductors The simplest method is illustrated below using an example with a five conductor cable At one of the connector ends measure resistance between pins in the following sequence 11 2 2 to 3 3 to 4 4to 5 1 3 2 to 4 3to5 1 to 4 2 to 5 1 to 5 By progressively moving through the pin count no combination of conductors is missed No continuity should be found in any measurement Check for an open condition by
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