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Service and Maintenance 

 

© PAT Rev. 7 06/18/01 // MO 

191319_7.DOC 

37 

8  SERVICE AND MAINTENANCE 

Daily maintenance of the load moment indicator consists of inspecting: 

 

1.  The electrical wiring connecting the various parts of the system.  

If electrical wiring is damaged, it shall be replaced immediately. 

 

2.  If the insulation is worn on the length sensor cable or cable guides are damaged, these parts shall 

be replaced. 

 

3.  Check the anti two-block limit switches for freedom of movement. 

 

4.  The cable reel shall be under tension to operate properly. 

 

5.  Check the pressure transducers at the hoist cylinder(s) and the connecting hoses for oil leakage. 

 

Other than correcting the problems identified in the Malfunctions Table and replacing faulty 

mechanical parts and cables, no other repairs shall be performed by non expert personnel. 

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Summary of Contents for DS 350

Page 1: ...www patamerica com PAT America Inc P N 050 350 191 319 REV 7 6 18 2001 LOAD MOMENT INDICATOR DS 350 1319 Graphic OPERATOR S MANUAL ...

Page 2: ...ed No part of this document may be photocopied reproduced or translated to another language without the prior written consent of PAT America Inc PAT America Inc reserves proprietary rights to all drawings photos and the data contained therein The drawings photos and data are confidential and cannot be used or reproduced without the written consent of PAT America Inc The drawings and or photos are ...

Page 3: ...n 26 5 1 4 Radius Limitation 28 5 2 INFO CRANE CONFIGURATION 30 5 3 DISPLAY CONTRAST CONTROL 31 6 PRE OPERATION INSPECTION AND CALIBRATION VERIFICATION 32 6 1 MACHINES WITH ONLY A MAIN HOIST 32 6 2 MACHINES WITH MAIN AND AUXILIARY HOISTS 32 6 3 INSTALLATION OF ANTI TWO BLOCK RETAINER IN LOCKING POSITION 33 6 4 REMOVAL AND STORAGE OF THE ANTI TWO BLOCK RETAINER 33 6 5 PRE OPERATION INSPECTION AND C...

Page 4: ... ...

Page 5: ...he device is not and shall not be a substitute for good operator judgment experience and use of accepted safe crane operating procedures The responsibility for the safe crane operation shall remain with the crane operator who shall ensure that all warnings and instructions supplied are fully understood and observed Prior to operating the crane the operator must carefully and thoroughly read and un...

Page 6: ...ne movements such as hoist up telescope out and boom down will be stopped The fixed data regarding the crane such as capacity charts boom weights centers of gravity and dimensions are stored in memory chips in the central processor unit This data is the reference information used to calculate the operating conditions Boom length and boom angle are registered by the length angle sensor mounted insi...

Page 7: ...RIPTION PAT Rev 7 06 18 01 MO 191319_7 DOC 3 Fig 1 Components of the LMI system PAT DS 350 1 Anti Two Block switches 2 Pressure Transducers 3 Length Angle sensor 4 Operating console 5 Central Micro Processor unit ...

Page 8: ...l logo If the system was turned off for more than two hours the setup configuration has to be entered after the system test Chapter 4 First the operating mode is determined by an interactive step by step interrogation of the rigging states Next is the interactive input of the reeving Now the LC display shows in symbols all inputs and awaits acknowledgment or cancelling Upon acknowledgment of the i...

Page 9: ... IDENTIFICATION This unit contains a display and different controls which are described as follows Legend to Fig 2 1 LC Display Area 10 Button and Control Light INFO 2 Load Moment Limit Light 11 Button and Control Light CONTROL 3 Load Moment Prewarning Light 12 Audible Alarm 4 Alarm Light Anti Two Block 13 By Pass Key Switch 5 Override Key Warning Light 14 Button and Control Light By Pass Anti Two...

Page 10: ...Operator s Manual DS 350 1319 PAT Rev 7 06 18 01 MO 191319_7 DOC 6 Fig 2 Operating Console ...

Page 11: ... down Load Moment Prewarning Light The yellow LOAD MOMENT PRE WARNING LIGHT 3 will light up when the load on the crane reaches the defined prewarning area thus indicating that an overload condition is approaching This means for the operator to continue his crane operation with extreme caution Alarm Light Anti 2 Block The red Anti Two Block Alarm Light 4 lights up when the anti two block limit swit...

Page 12: ...e actual load display when the boom radius is changed either by angle or length Button LIMITS Button to start the function program limit values For the proceeding please refer to Chapter 5 1 Button SELECT Button to start the function set operating mode For the proceeding please refer to Chapter 4 1 The correct setting is of utmost importance for the proper function of the system and the crane Ther...

Page 13: ...eactivated when the KEY SWITCH 13 is turned to position B and the By pass LMI button 15 is pushed KEY SWITCH 13 can be operated only by using the matching key Since button 14 and 15 deactivate the cut off function of the LMI system the anti two block system the following instructions must be obeyed The by pass function shall be used with discretion as unwarranted use of it to override the control ...

Page 14: ...f the anti two block switch is deactivated The Override Key Warning Light 5 flashes to indicate that the cut off function is deactivated Button By pass LMI This button can be operated only if key switch 13 is turned to position B After pushing this button the control lever lockout function of the LMI is deactivated The Override Key Warning Light 5 flashes to indicate that the cut off function is d...

Page 15: ...d the inputs have been confirmed If the system is turned off for example during short breaks less than 2 hours all adjustments remain stored When turning on again the system these adjustments can be acknowledged by merely pressing one key provided that the crane configuration has not been modified During the programming procedure the Load Moment Pre Warning Light 3 and the Load Moment Limit Light ...

Page 16: ... The following illustrations define the symbols appearing on the display during the setup procedure Not all symbols will be shown depending on the crane type and the answers to the questions Select interactive configuration setup special mode setup Interactive Configuration Setup Special Mode Setup Note Refer to manufacturer load chart for special LMI operating code if selected special mode setup ...

Page 17: ...b For detailed symbol explanation of extensions please refer to Appendix A in this manual Setting the counterweight configuration If your crane is equipped with counterweight options please refer to Appendix B in this manual for detailed symbol explanation of counterweight Setting The Hoist Configuration Front Hoist Rear Hoist Setting The Outrigger Configuration On Rubber Outrigger Position 0 Outr...

Page 18: ...on Of The Programming Procedure At the end of the procedure all inputs are represented once again in symbolic forms If inputs have been made the corresponding symbols are filled in black Quick Setting The Reeving Chapter 4 3 Quick Hoist Line Selection Chapter 4 2 Cancel Procedure Confirm Inputs counterweight configuration optional hoist selection boom configuration outrigger configuration reeving ...

Page 19: ...ramming procedure again Call LMI Programming Procedure Directly call function Quick Setting of the Reevings Note The direct call is impossible if the system has been turned off for more than 2 hours Input Of Reeving Increase Reeving Decrease Reeving Confirm Reeving F1 F2 F3 F4 Confirm Modification Select Again The Function Upon Faulty Input Note If a configuration is selected which is not availabl...

Page 20: ...ugh the whole LMI setup procedure again Call LMI setup procedure Directly call function Hoist Line Selection Note The direct call is not possible if the system has been turned off for more than 2 hours Select hoist Front Hoist Rear Hoist Confirm modification Call up the function again if you have selected the wrong winch by mistake Note If a configuration is selected which is not available on the ...

Page 21: ...actual crane configuration the system is ready for operation The display shows the LMI screen example for value representation reeving parts of line operation code number boom length tip height boom angle radius max load actual load utilization bargraph only for cranes with boom control system ...

Page 22: ...mits exceeded see Chapter 5 1 1 a Symbol work area definition continuously visible work area definition active blinking work area limits exceeded see Chapter 5 1 1 b Symbol height limitation continuously visible height limitation active blinking height limit exceeded see Chapter 5 1 2 Symbol boom angle limitation continuously visible boom angle limitation active blinking angle limits exceeded see ...

Page 23: ...p by step user guidance Functions can be used individually or in combinations Exceeding a programmed limit triggers an audible and visual alarm Depending on the crane type not all functions listed below are available Overview limits Slewing Angle Limitation Work Area Definition Chapter 5 1 1 Tip Height Limitation Chapter 5 1 2 Boom Angle Limitation Chapter 5 1 3 Radius Limitation Chapter 5 1 4 ...

Page 24: ...er the corresponding figure to call the function Slewing angle limitation Maximum Minimum Slewing Angle Chapter 5 1 1 A Work Area Definition Virtual wall setup A wall is defined by a straight line between two set points Chapter 5 1 1 B 5 1 1 A Slewing Angle Limitation set delete left slewing angle Select limit Select left limit set delete Position boom to required left limit value program present ...

Page 25: ...t limit select right limit set delete Position boom to the required right limit value set present slewing angle as right limit delete right angle limit Display shows symbols and angle values of the programmed slewing angle limit Display shows symbols without angle values Quit function ...

Page 26: ... operator can setup up to 5 virtual walls the first wall is defined by a straight line between two set points The second through fifth walls are created by one new point and the previously selected point After the walls have been set the system alerts the operator when the boom approaches them This is done both visual and audible The console will warn the operator by an audible beeping alarm which...

Page 27: ...nd deletes all virtual wall settings After pressing SET an infinite virtual wall is defined Now three soft keys are available Accepts the defined wall and exits Allows for further walls to be added Exits the screen and deletes all virtual wall settings After pressing SET an X appears where the last point had been set and a new wall may thus be added Move the boom tip to the other end of the additi...

Page 28: ...S 350 1319 PAT Rev 7 06 18 01 MO 191319_7 DOC 24 Upon pressing SET the second wall is created Accepts the defined walls and exits Allows for further walls to be added Exits the screen and deletes all virtual wall settings ...

Page 29: ...lete height limitation Call LIMIT Setting Press the corresponding figure to select function tip height limitation Press key set delete Move the tip to the required upper limit set present tip height as upper limit delete tip height limitation Display shows symbol and value of the programmed height limit Display shows symbol without values Quit function ...

Page 30: ...the corresponding figure to call function boom angle limitation set delete upper limit value Select limit selection upper boom angle limit set delete Luff up the boom the requested limit value set present boom angle as upper limit delete upper angle limit Display shows symbol with value of the upper angle limit Display shows symbol without value of the upper angle limit Quit function Set delete lo...

Page 31: ...selection lower boom angle limit set delete Luff down boom to the required limit value set present boom angle as lower limit delete lower angle limit Display shows symbol with lower angle limit Display shows symbol without value of lower limit angle Quit function ...

Page 32: ...T Setting Select the corresponding figure to call the function radius limitation set delete minimum radius Select limits select minimum radius limit set delete position boom at the required minimum radius value set present boom radius as minimum radius delete minimum radius limit display shows symbol with radius value of minimum limit display shows symbol without value of minimum radius Quit funct...

Page 33: ...limit Selection Maximum Radius Limit set delete Position boom to the required maximum radius value set present boom radius as maximum radius Delete maximum radius limit Display shows symbol with radius value of max limit Display shows symbol without value of max radius Quit function ...

Page 34: ...the system is ready for operation this function displays the system configuration Call Function Press key INFO The display shows the crane symbol representing the adjusted configuration marked black the extended operating code number and the reeving number parts of line End Function Press again key INFO ...

Page 35: ... pattern is shown by means of which the display can be adjusted to the optimum contrast Use the functional keys to modify the contrast upon request Darken Display Brighten Display Confirm Setting Press key OK to store the momentarily adjusted contrast value and to quit the function F1 F2 F3 F4 darken brighten During normal LMI operation the display contrast can be adjusted also by pressing one of ...

Page 36: ... is fixed with a red lanyard at the anti two block switch described on pages 40 and 41 Then the weight shall be reattached to the boom extension anti two block switch Failure to re position the anti two block switch weight will prevent the overhoist system from functioning properly No weight shall be on the main hoist anti two block switch when the boom extension is being used 6 2 MACHINES WITH MA...

Page 37: ... Retainer in Locking Position Fig 2 Retainer in Locking Position 3 Straighten the cable completely into the slot and release the cable 4 4 Turn the flag of the retainer for best visibility for the operator 5 6 4 REMOVAL AND STORAGE OF THE ANTI TWO BLOCK RETAINER Procedure see Fig 3 and 4 1 Pull the cable out of the switch 1 and bend back parallel to the boom and hold 2 2 Move the retainer down 3 a...

Page 38: ...e crane movements hoist up telescope out and boom down 1 Check the anti two block alarm light 4 and the audible alarm 12 by performing one of the following tests a By manually lifting the weight attached to the anti two block switches When the weight is lifted the audible alarm 12 should sound the anti two block alarm light 4 should light b Slowly raise the main boom load handling device to create...

Page 39: ... before operating the crane 2 If the crane is equipped with a boom extension repeat the test procedure for the boom extension anti two block switch Check that the display of the main boom length agrees with the actual boom length 3 Check that the display of the main boom angle agrees with the actual boom angles 4 Check that the display of the operating radius of the crane agrees with the actual ra...

Page 40: ...e LMI Rated loads include the weight of the hook block slings and auxiliary load handling devices Their combined weights shall be subtracted from the listed load capacities as stated on the load capacity chart to obtain the net load to be lifted If any of the displays reflects a deviation between displayed and actual values an authorized PAT service representative shall be called for repair of the...

Page 41: ...lation is worn on the length sensor cable or cable guides are damaged these parts shall be replaced 3 Check the anti two block limit switches for freedom of movement 4 The cable reel shall be under tension to operate properly 5 Check the pressure transducers at the hoist cylinder s and the connecting hoses for oil leakage Other than correcting the problems identified in the Malfunctions Table and ...

Page 42: ...electronic microprocessor shall be repaired by factory trained service personnel When these faults occur the competent service organization shall be contacted 9 2 MALFUNCTION TABLE Error Code Error E01 Fallen below the radius or above angle range E02 Radius range exceeded or fallen below angle range E03 Boom position is out of the permissible working area E04 Operating mode not existing E05 Prohib...

Page 43: ...sible working area See lifting diagram in the load capacity charts E04 Operating mode switch in the console incorrectly set Correctly set operating mode switch to the code assigned to the operating mode of the crane Operating mode is not permissible with the actual crane configuration boom position or area definition Be sure crane is set up according to proper operating configurations E05 Boom was...

Page 44: ...iary boom nose A frame boom extension offsetable A frame Fixed extension tele offsettable extension Fixed offsettable extension fixed jib Swingaway bifold with fly stowed on main boom swingaway with fly tele Swingaway bifold without fly stowed on main boom swingaway bifold without fly fly stowed on main boom bifold with fly stowed on main boom ...

Page 45: ...terweight without auxiliary counterweight with auxiliary counterweight without counterweight with counterweight A with counterweight B with counterweight A B only for cranes with auxiliary counterweight without auxiliary counterweight with auxiliary counterweight scroll up to the next pre programmed counterweight configuration scroll down to the next pre programmed counterweight configuration pres...

Page 46: ...s with superstructure counterweight and front bumper counterweight configuration scroll up to the next pre programmed counterweight configuration scroll down to the next pre programmed counterweight configuration press the O K button to confirm and to proceed with console programming ...

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