GENERAL INFORMATION 1. GENERAL INFORMATION The PAT Anti–Two-block System has been designed to warn the crane operator of a two-blocking condition of the crane. If a two-blocking condition is approached, the system will warn the operator by sounding an audible alarm, lighting a warning light and locking out those functions which may aggravate the crane's condition, whenever applicable.
CONTROL IDENTIFICATION Figure 1 illustrates the controls of the PAT Anti-two-block System. The numbers of the illustration correspond to the numbers in the following list, which describes the function of each control. Buzzer: The BUZZER (1) is an audible alarm that sounds during an approaching two-block condition of the crane.
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PRE-OPERATION INSPECTION Anti-Two-block Alarm Light and Alarm Stop Button: The ALARM LIGHT BUTTON serves a dual purpose. First, a red warning light illuminates when the anti-two-block limit switch contact opens. This indicates that a two-blocking condition is approaching. At the same time, the BUZZER (1) will sound and the following crane movements will be stopped concurrently: hoist up, telescope out and boom down.
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INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK PRE-OPERATION INSPECTION Prior to operating the crane, the following checks must be made: 1. Check the cabling connections to the various parts of the system for physical damage. 2. Check the spring-loaded cable reel to ensure it is free to rotate, has proper tension and is spooled properly.
PRE-OPERATION INSPECTION 6. Check the installation of the A2B retainer when applicable. - See Numbers 4 and 5 of Pre- Operation Inspection, above. Installation of Anti-two-block Retainer in Locking Position (Figures 1 and 2) 1. Pull the cable out of the switch and bend back parallel to the boom and hold . 2.
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK OPERATIONAL TESTS The operation test will test and verify the anti-two- block switch(es)is (are) functioning properly. This test should be completed periodically or any time there is an indication of uncertainty for operation. The following tests must be performed carefully to prevent personal injury or damage to the machine.
INSTALLATION INSTALLATION SYSTEM KITS This Installation Manual shows the approximate location of components and wiring diagrams required for system operation. This manual has two different system component and wiring diagrams; therefore, use the drawings that match your system, as shown below: 1.
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK DRAWING 1. 031-300-060-653 A2B CONSOLE INSTALLATION KIT - PARTS LIST VIEWOF CONS OLE MOUNTE D IN CAB 2,3,4,5 P A T TO PLUG AT BOOM BASE CLEA N ELECTRI C A L CO NTA CTS A N D CO NNECTO RS OF A LL FOREIGN MA TERIA L SUCH AS GREA SE, OIL, TO CONSOLE...
INSTALLATION, HYDRAULIC CRANE DRAWING 1. 031-300-060-654 A2B MAIN BOOM INSTALLATION KIT - PARTS LIST 21,22 20, 21 42,43, 44,45 0,11,1 2 13,14,15,1 5. 5"TO 1 1 /2 TYP. SPAC AT 55 2-7/8 FRONT PDSITIO N *H E BASE SEC*I0 N ROLLER GUI DE, A DIST ANCE FRO M VIEW A—A.
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INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK PART NO. DESCRIPTION 068-000-050-078 HOOK BOLT, 3/8-16 X 4 068-000-050-077 HOOK BOLT, 3/8-16 X 2 3/4 000-207-010-105 FLAT WASHER, 3/8 000-208-040-100 LOCK WASHER, 3/8 002-060-101-005 NUT, 3/8-16 HEX 002-051-110-255 SCREW, 3/8-16 X 1 HEX HEAD 002-350-207-255 STUD, 1/4-20 X 1 WELD 002-060-100-705...
INSTALLATION, HYDRAULIC CRANE DRAWING 3. 031-300-100-443 A2B MOUNTING KIT - PARTS LIST APPROX. P A T 1 1/ 2 TYP. ROLLER GUIDES ON BASE SECTION POSITION HEIGHT OF ROLLER GUIDE BE CENTERED ON CABLE DRUM, OBTA IN CABLE REEL LINE PA TH ING GUIDES TO FORM STRA IGHT IS PA RA LLEL TO TOP SURFA CE OF TO DEA D END ON...
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK DRAWING 4. 031-300-060-653 A2B CONSOLE INSTALLATION KIT - ELECTRICAL DIAGRAM INNER SHIELD (Is) INSULATED RE*ER TO CRANE ELECTRIC AND CONNECT E D AS SHOWN. SCHEMATICS. OUTER SHIELD GROUNDED Y/ITH EACH 30LENQID VALVE 0R COMPONE NT STRAIN RELIEF MAC N ET DEVICE TQ BE INSTALLS D Y/I TH DI0DE IN 4003..IN4007 AS SH0Y/N.
INSTALLATION, HYDRAULIC CRANE DRAWING 5. 031-300-100-654 A2B MAIN BOOM INSTALLATION KIT - ELECTRICAL DIAGRAM N Q TES : OU TER SH I ELD GROUNDED A* STRAI N RELIEF C 0 N N EC*OR I NN ER SHI ELD INSULATED AND CON N EC*ED AS S H0WN INNER SHIELD CUT OFF AND TAPED OUTER SH OLD NSU LACED AND CON N EC*LD...
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK INSTALLATION, LATTICE CRANE SYSTEM, A2B LATTICE MAIN & EXT BOOM KITS Drawing 6. 031-300-101-224 Kit, A2B Main Boom Lattice Retrofit - Parts List and 031-300-101-225 Kit, A2B Jib Lattice Retrofit - Parts List Drawing 7. 031-300-101-224 Kit, A2B Main Boom Lattice Retrofit - Electrical Diagram and 031-300-101-225 Kit, A2B Jib Lattice Retrofit - Electrical Diagram Optional jib kits are shown on parts list (the additional components available upon request) NOTE: CONTACT CRANE MANUFACTURER FOR WELDING INSTRUCTION PRIOR TO WELDING...
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK LENGTH CABLE REPLACEMENT PROCEDURE WARNING The cable drum is under high tension. Do not let the length cable spool back without supporting the cable and leading it back on the drum. Pay attention and watch that the wraps do not pile up on one side.
INSTALLATION, LATTICE CRANE SLIP RING REPLACEMENT PROCEDURE This section explains the replacement of the slip ring in the cable reel. Refer to Drawing 9 in this section. 1. Retract the boom fully. Refer to the manufactures operators manual and familiarize yourself with its operation and the LMI bypass.
INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK TROUBLESHOOTING ANTI-TWO-BLOCK PROBLEM PROBLEM: Function of Anti-Two-Block System is faulty. START Check to see whether or not crane is in two-block condition. Correct? Lower hook down into safe position Turn power off or disconnect wires # 5 & 6 from console board X1:3 & 4. Refer to Drawing 4, Section 4.
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TROUBLESHOOTING MANUAL PREVIOUS PAGE Measure the A2B signal in the cable reel between X1:Brown and X2:Red wires on the slip ring with an ohmmeter. Switch closed =4700 ±500Ohms Switch open => 1 Megaohm Refer to Drawing 5, Section 4. Fault in wiring between boom nose box and cable reel. Check for damaged length cable and wiring.
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INSTALLATION, OPERATOR’S & TROUBLESHOOTING MANUAL ANTI-TWO-BLOCK PREVIOUS PAGE Connect wires # 5 & 6 back to the Console Board terminal X1:3 & 4. Refer to Drawing 4, Section 4. Turn system power off. Check Anti-Two-Block signal in console with ohmmeter measure between X1:3 and X1:4.
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LEVER LOCKOU T OLENO D V,4LVE CONSOLE BYP ASS K E SWITCH SH I ELD SHIELD OUTPU* CORE w it h C,AB BE REEL LED GTH CABLE CONSOLE IRM M AN U*AC TO RER’S * RE*ER *O CRAN ELEC R! CAL DOCU M EN TATION FOR W RE NU MBER CON NECT ON O LOCKOU T S G N AL...
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