LALT 1151L System for Lattice Cranes Installation and Calibration Manual 1 of 39
This manual is designed to guide the fully trained and experienced crane operator in the correct installation and calibration of the LALT 1151L System. This manual is not to be used as a substitute for the usual safety practices and precautions required for the safe setup and operation of the crane. 2 of 39
The LALT 1151L System for Lattice Cranes LALT 1151L System... 5 Features...5 System Components... 5 SECTION 1. Installation Display Console meter... 7 Cable Storage Reel... 9 Boom Angle Sensor A220220... 9 Swing-Arm Mounted Tensiometer... 11-13 Anti Two-Block Switch main... 14-16 Anti Two-Block Switch jib... 17 Anti Two-Block Switch rooster/auxiliary... 17 Motion Cuts single signal... 17 Dimensional Drawings... 18-20 SECTION 2. Calibration See page 21. 3 of 39
Figures - Installation Figure 1. System Layout -Typical Butt Mount with Anti Two-Block... 6 Figure 2. System Layout -Typical Point Mount with Anti Two-Block... 8 Figure 3. Boom Angle Sensor/Cable Storage Reel... 10 Figure 4. Position of Boom Angle Sensor in Relation to Boom Centerline... 10 Figure 5. Swing Arm Mounted Tensiometer - Single or Dual Load Channels... 12 Figure 6. Swing Arm Mounted Tensiometer - Single or Dual Load Channels... 13 Figure 7. Boom Head - Main Anti Two-Block Switch - Left-Hand Mount... 15 Figure 8. Boom Head - Main Anti Two-Block Switch - Right-Hand Mount... 16 Dimensional Drawings Figure 9. Two-Block Switches, Cable Storage Reel, Angle Sensor, and Extension Reel.... 19 Figure 10. Tensiometers... 20 4 of 39
LALT -1151L System The LALT 1151L System is designed to aid in preventing crane overload and/or a two-block condition for lattice cranes. The system also enables the operator to set and control alarms needed for specific areas of alert. When an overload condition develops, visual and audible alarms activate to alert the crane operator to approaching danger. These alarms are continuous until the overload condition is resolved. When a two-block condition develops, visual and audible alarms activate and boom movements (hoist up, boom down, extend out) are halted. The LALT 1151L System can be used with a wide variety of lattice boom cranes. Features Displays length and angle of main boom Displays the radius of the load Displays the height of the boom head Displays the weight of the actual load System Components LALT 1151L Display Console (meter) Cable storage reel (lattice boom cranes) Tensiometer(s) Two-block switch main Jib and rooster two-block switch(es) 5 of 39
A251000 CHAIN & WEIGHT A251000 CHAIN & WEIGHT A048000 JIB CABLE TOP ANGLE SENSOR A220220 ANGLE CABLE A047037 GREER COMPANY A250023 JIB SWITCH A250003 MAIN SWITCH A048000-XX JIB CABLE ON REEL A240105 CABLE STORAGE REEL A310104 (LALT - 1151L) CAB DISPLAY A048010-XX LOAD CELL CABLE A048000-XX JIB CABLE TOWARD BOOM PIVOT COMP/REEL MAIN ATB WHIP JUNCTION BOX A048050-30 CABLE - DISPLAY TO REEL A230000-XX (HRT 181 TENSIOMETER Figure 1. System Layout - Typical Butt Mount with Anti Two-Block Single load shown dual available #12066-702 DISPLAY CONSOLE 6 of 39
Display Console Meter Refer to Figures 1 & 2, pages 6 and 8, for System layouts. 1. Choose a suitable location inside the cab for the display console. The display screen should be easily viewed by the operator without obstructing the visual field through the cab window. 2. Mount the display console bracket securely in the selected position. 3. Secure the display console unit to the bracket. This unit will operate on either 12 or 24 VDC negative ground equipment without modification. 4. Route the power cable to a 12 or 24 volt DC buss (positive connector) that turns off automatically when the ignition is turned off. 5. Check the voltage to ensure a minimum of 12 VDC. 6. Connect the black wire to "ground" (BAT neg) and the red wire to the 12 or 24 volt DC buss. (BAT pos).this connection permits the load indicator to be either energized or de-energized by turning the ignition switch on or "off." The single orange wire is used to drive function kickout solenoids and can handle a maximum of 10 amps. If the FKO system used requires more than 10 amps, we suggest that you use the orange wire to drive a slave relay that meets your amperage requirements. If no motion cut valves are to be installed, insulate the orange motion cut wire. It will be "hot" when the display console is operating. 7. Tie off and store excess cable in a protected location. 7 of 39
Angle cable A048030 XX shielded Toward boom pivot A second linerider can be used instead of a tension cell TOP #12044-702 Figure 2. System Layout: Typical Point Mount with Anti Two-Block Figure 2A. Angle sensor and cable connection for older models. A220300 Angle sensor Bat-714 #12044-702-1 8 of 39
Cable Storage Reel The cable storage reel is a hand-cranked extension reel that can accommodate enough cable for maximum boom length. Excess load cell or anti two-block cable for shorter boom lengths can be stored on this reel. 1. Clamp the cable storage reel to the lattice on the inside of the base section of the boom. The hole pattern on the base of the reel will accommodate varying clamp sizes. 2. Tighten the wing-nut on the front of the extension reel. The wing-nut controls the rate of rotation of the reel. Boom Angle Sensor A220220 Refer to Figures 3 and 4, page 10. The mounting position for the boom angle sensor must be either on the outside of the left side (operator's left when seated in the cab) of the boom, or on the inside of the right side of the boom, as shown in the illustration. 1. With the boom in a horizontal position, mount the boom angle sensor vertically (connector toward pivot) with the top of the sensor parallel to the centerline of the boom. Mount the sensor using 1/4" bolts, studs, or weld plate. 2. Connect angle sensor cable to angle sensor. Route the cable along the lower edge of the boom. Make a loop in front of or behind the boom pivot, ensuring that the cable does not stretch, pinch, or abrade when the boom is at a high or low angle. 3. Continue routing the cable into the cab to connect to the angle connection from the display console. 4. Install cable clamps/cable ties every two to three feet along the boom. 9 of 39
CABLE STORAGE REEL ANGLE SENSOR ENSURE THAT AT HIGH BOOM ANGLES THE CABLE IS NOT STRETCHED OR PINCHED INSIDE RIGHT POSSIBLE POSITION FOR ANGLE SENSOR TO TENSIOMETER OUTSIDE LEFT TO METER Figure 3. Boom angle sensor/cable storage reel. #13391-702 90 Top BOOM CENTERLINE Figure 4. Position of boom angle sensor in relation to boom centerline. #13391-702-1 #13391-702-1 10 of 39
Swing-Arm Mounted Tensiometer Single or Dual Load Channel Refer to Figures 5 and 6 on pages 12 and 13. 1. Mount the swing-arm tensiometer at the top of the tip section or at the top of the base section of the boom. This position is determined by the number of tensiometers to be installed and whether or not the winches are side-by-side or tandem. The method of installation is the same for either tip or base mount. 2. With the boom lowered to the ground: a) Lay the swing-arm bracket on the top of the boom. b) Position the bracket and loosely install the clamps without interfering with the lattice. c) Mount the swing-arm to the bracket with the bolt and nut supplied. 3. Place the landing pad bracket onto the top of the boom so that the center of the bracket is approximately 7 inches from the end of the swing-arm. a) Loosely install the clamps. b) Place the tensiometer on top of the landing pad with the load cell cable toward the swing-arm. c) Bolt the tensiometer to the swing-arm with the bolt and nut supplied. 4. Before tightening the clamps on the swing-arm bracket and landing pad, ensure that the center of the tensiometer is over the center of the landing pad. If two tensiometers are to be installed, mount the second tensiometer before tightening the clamps. Check for freedom of movement of the joints on both ends of the swing-arm. 5. Remove the bolt that secures the rocker-arm/center roller assembly during shipping. Feed the hoist cable under the back of the end roller, over the top of the center roller, and under the front roller to the head sheaves. Continued on next page 11 of 39
LAYDOWN INSTALLATION LAYDOWN INSTALLATION STANDUP INSTALLATION LANDING LANDING PAD PAD TENSIOMETER SWING ARM MOUNTING BRACKET This method can also be used when mounting the tensiometer on the boom butt section. 13194 Figure 5. Swing-arm mounted tensiometer - single or dual load channels Figure 4. Swing-arm mounted tensiometer - single or dual load channel If it is inconvenient to un-reeve the block, install the cable on the tensiometer as follows: a. Remove the two end rollers and both top spacers. b. Set the hoist cable into the tensiometer on the center roller. c. Replace the end rollers and spacers. d. Grease the four zerk fittings on the tensiometer before operating. 6. Clamp the cable to the frame of the tensiometer for strain relief. 7. Ensure that the load lines will not rub on the cable. Secure the cable about every 12 inches along the swing-arm. 8. Leave enough slack so that the tensiometer can swing to the stops in all directions without pulling on the loadcell plug. Continued on next page 12 of 39
LOADCELL CABLE LACED INSIDE BOOM TO BOOM PIVOT ENSURE THAT THERE IS ENOUGH SLACK TO ALLOW FULL MOTION OF THE SWING -ARM ENSURE THAT THERE IS ENOUGH SLACK TO ALLOW FULL MOTION OF THE SWING -ARM SWING -ARM ASSEMBLY SLACK CABLE AROUND HINGE AREA CLAMP TO CHORDS USING MOUNTING BRACKETS LANDING PAD CLAMP TO CHORDS USING MOUNTING BRACKETS CLAMP TO CHORDS USING MOUNTING BRACKETS. SWING -ARM ASSEMBLY LANDING PAD CLAMP TO CHORDS USING MOUNTING BRACKETS MOUNT DISPLAY CONSOLE (METER) FOR EASY VIEWING BY OPERATOR. ENSURE THAT OPERATOR'S VIEW THROUGH THE CAB WINDOW IS NOT OBSTRUCTED. #12148 Figure 6. Swing-arm mounted tensiometer - single or dual load channels 9. At the lower universal joint of the swing-arm, leave enough slack for free swing-arm movement. 10. Route the cable down the boom to the display console. 13 of 39
Anti Two-Block Switch Main The mounting method used for installing the anti two-block switch main is dependent on the identification number on the switch arm. Follow the instructions for the appropriate type below and Refer to Figure 7 on the next page for left-hand mounts. For right-hand mounts, refer to Figure 8 on page 16. 1. Remove the two 1/4 20" truss head screws from the main anti two-block switch cover and set the cover aside. 2. Look at the pivoting switch-arm. If the arm is cast with the number 065181, follow Type 1 (the arm will also have a G.L.G. cast into it). If the arm is cast with the number 065218, follow Type 2. TYPE 1 1. Lower the boom to 0 (zero). 2. Find and mark a location on the boom head where the anti two-block switch can be mounted at about a 30 angle to the boom. Measure the angle from the bottom front edge of the switch. Ensure that the switch will not interfere with any of the attachments when fitted. 3. Remove the back weld plate from the switch. 4. Weld the plate to the boom. 5. After allowing the plate to cool, clean and paint the plate. 6. Mount the switch to the plate and replace the cover. 7. Attach the chain and weight assembly to the switch swing-arm. TYPE 2 1. Lower the boom to 0 (zero). 2. Find and mark a location on the boom head where the anti two-block switch can be mounted parallel to the boom. The switch must not interfere with any of the attachments when fitted. 3. Remove the back weld plate from the anti two-block switch. 4. Weld the plate to the boom. 5. After allowing the plate to cool, clean and paint the plate. 6. Mount the anti two-block switch to the plate; replace the cover. 7. Attach the chain and weight assembly to the switch swing-arm. 14 of 39
TYPE 1 FOR SWITCHES WITH THE NUMBER 065181 CAST INTO THE SWITCH ARM (G.L.G. WILL ALSO APPEAR CAST IN THE SWITCH ARM). TYPE 2 FOR SWITCHES WITH THE NUMBER 065218 CAST INTO THE SWITCH ARM MAIN TWO-BLOCK SWITCH MS3101A-10SL-3P (RECEPTACLE FOR JIB CABLE) BOOM CENTERLINE MS3106A-10SL-3S BOOM CENTERLINE CHAIN WEIGHT APPROXIMATELY 30º MS3106A-10SL-3P A048000-XX MS3101A-10SL-3P RECEPTACLE FOR JIB SWITCH FROM STORAGE REEL OR J BOX MAIN TWO- BLOCK SWITCH CHAIN WEIGHT FROM STORAGE REEL OR J BOX A048000-XX HOIST ROPE HOIST ROPE 13309-702 #13309-702 Figure 7. Boom head (main) anti two-block switch - left-hand mount 15 of 39
Figure 8. Boom head main anti two-block switch - right-hand mount. This Figure illustrates the setup for both long-arm and short-arm switches. Casting Numbers: P065181 (long-arm switch) and P065218 (short-arm switch) TYPICAL long-arm switch: GC P/N A250003 (SW 208) TYPICAL short-arm switch: GC P/N A250000 (SW 252) 16 of 39
Anti Two-Block Switch Jib The mounting method used depends on the model number of the jib anti two-block switch. 1. Remove the two 1/4-20 truss head screws from the Anti Two-Block switch cover; set cover aside. 2. If the pivoting switch arm is cast with the number P065181, use type 1 (page 14). If the arm is cast with the number PO65218, use type 2 (page 14). The arm will also have a G.L.G. cast into it (exception: not on P065218). 3. In some cases, the anti two-block switch will have to be mounted behind the jib sheave. The jib switch is connected to the main anti two-block switch with a cable. A small loop, which can be coiled up when not in use, will be required to connect the cable to the main switch. a) Connect the jib cable to the jib switch. b) Lace the cable inside the jib where it cannot be pinched or damaged. c) Secure the cable every 3 to 4 feet. Anti Two-Block Switch - rooster/auxiliary The rooster/auxiliary switch is installed the same way as the jib switch but in most cases the cable from the switch will be long enough to connect straight to the main anti two-block switch. Clamp the cable to the boom head to prevent damage. 17 of 39
Dimensional Drawings 18 of 39
MAIN TWO-BLOCK SWITCH (TYPE 1) 2.06 7.50 4.50 CABLE STORAGE REEL 11.00 11.00 9.38 7.50 JIB TWO-BLOCK SWITCH (TYPE 1) 2.06 7.50 4.75 4.50 4.13 9.38 MAIN TWO-BLOCK SWITCH (TYPE 2) 1.88 6.85 ANGLE SENSOR 3.56 UP 4.75 4.79 5.41 4.78 414 JIB TWO-BLOCK SWITCH (TYPE 2) 1.88 6.85 313 3.56 4.75 #12149-702 Figure 9. Dimensional drawing for two-block switches, cable storage reel, angle sensor, and extension reel. 19 of 39
26.00 GREER COMPANY HRT 186 4.35 7.50 HRT 179 8.25 11.13 Figure 10. Dimensional drawing for tensiometers. MOUNTING BRACKETS FOR STAND UP INSTALLATION ONLY 5.34 4.31 10.25 HRT 181 22.00 #13403 25.38 26.00 20 of 39
SECTION 2 Calibration This portion of the manual is designed to guide the fully trained and experienced crane operator in the safe calibration of the LALT 1151L System for lattice cranes. While in the calibration mode, only the two-block will function. All other alarms will remain inactive until the system is out of the calibration mode. The calibration mode is entered only when the system requires calibration. Operator-settable alarms as well as the rest of the system are dependent upon proper calibration. Before calibration, be sure that the crane installation procedures have been followed and are completed. Please follow these instructions carefully. 21 of 39
The LALT 1151L System for Lattice Cranes SECTION 2. Calibration Introduction to the Calibration Process... 23 Required Tools... 24 Identifying Calibration Needs... 24 Initialization... 24 Boom Length... 24-25 Parts-of-Line... 25 Entering and Exiting the Calibration Mode... 25 Number Entry... 26 Boom Angle Calibration... 27 Slew Offset Calibration... 28 Main Line pull Calibration... 29 Main Zero Calibration... 30 Main Span Calibration... 31-32 Auxiliary Line pull Calibration... 33 Auxiliary Zero Calibration... 34 Auxiliary Span Calibration... 35-37 22 of 39
Introduction to the Calibration Process After installation, the LALT 1151L System for lattice cranes must be calibrated before it can operate. Take a moment to become familiar with the keys on the face of the display below. These keys along with the required tools listed below and the two screens on the face of the display are all that is necessary to calibrate the LALT 1151L System. Required Tools Tape measure Inclinometer (for measuring the angle of the boom) A test weight for each hoist that is heavy enough to make a single part line pull at least equal to 50% of the hoist rope maximum capacity. (See example for calculating the correct test weight on page 31.) Figure 1 Contrast Control Knob 23 of 39
Identifying Calibration Needs If the LALT -1151L System has never been calibrated: complete Sections A J for single winch cranes and Sections A L for dual winch cranes. Always calibrate the System in the order shown in the following pages. Always set the boom length before entering the calibration mode. If the LALT -1151L System has already been calibrated, but needs recalibration in a particular area: 1. Check the boom length and parts-of-line (Sections B & C) for accuracy. 2. Enter the Calibration Mode (Section D). 3. Recalibrate only those areas requiring change. 4. Do not perform initialization steps in Section A; to do so will cause all previously stored calibration data to be lost. If the displays are blank or all black, adjust the contrast knob (Figure 1, page 23) on the bottom of the display unit. A Initialization Perform the following "INITIALIZATION" steps 1-7 ONLY when calibrating the ENTIRE LALT -1151L System. These steps will remove all data that was previously stored in the System memory. 1. Press OPTION MENU. The display will read: "SET RIGGING MODE." 2. Press MIN RAD. 3. Press MIN ANG. 4. Press MAX ANG. 5. Press PARTS-OF-LINE. 6. Press either ENTER for "YES" or CANCEL for "NO." 7. Press CANCEL to exit the OPTION menu. Ensure that all limit displays except MAX LOAD show "." B Boom Length Always set "BOOM LENGTH" before entering the Calibration Mode. 1. Press SET LENGTH. 24 of 39
2. Press the r or o arrows to enter BOOM LENGTH. 3. Press ENTER. C Parts-of-Line Always set "PARTS-OF-LINE" before entering the Calibration Mode. 1. Press MAIN/AUX until the display reads: "M" (MAIN). 2. Press PARTS-OF-LINE. 3. Pressing the r and o arrows, set the PARTS-OF-LINE for the MAIN winch. 4. Press ENTER. 5. Verify that the PARTS-OF-LINE are correct on the display. (If there is no auxiliary hoist line in use, do not complete steps 6-10.) 6. Press MAIN/AUX once; the display will read: "A" (AUXILIARY). 7. Press PARTS-OF-LINE. 8. Pressing the r and o arrows, set the Parts-of- Line for the AUXILIARY winch. 9. Press ENTER 10. Verify that the PARTS-OF-LINE are correct on the display. D Entering and Exiting the Calibration Mode To calibrate the System, it is necessary to first enter the "CALIBRATION MODE." 1. Press OPTION MENU. The display will read: "SET RIGGING MODE." 2. Press the r arrow three times. The display will read: "ENTER CAL. MODE." 3. Press ENTER. The display will read: "ENTER KEY CODE." 4. Press MAX ANGLE twice; then, press OPTION MENU three times. An asterisk will appear for each key press. 5. When the display reads: "CAL. ANGLE," the System is in the CALIBRATION MODE. 6. When ready to exit the CALIBRATION MODE, press CANCEL after completing any of the calibration routines. 25 of 39
E Number Entry When entering angle, length, radius, or load numbers, a decimal should show on the screen. a) An ANGLE is displayed in degrees, decimal, and tenths of degree. EXAMPLE: Ten and one half degrees = 10.5 b) LENGTH, RADIUS, and SWING OFFSET is displayed in feet, decimal, and tenths of feet. EXAMPLE: Ten and one half feet = 10.5 c) LOAD is displayed in pounds x 1000 EXAMPLE: Ten thousand five hundred pounds = 10.5 26 of 39
F Boom Angle Calibration The "BOOM ANGLE" is the angle measured between the boom centerline and horizontal. When first entering "CAL MODE," the display will read: "CAL. ANGLE." 1. Press ENTER to start the routine. 2. Boom down (Fig. 2) to 0 (zero). Verify the angle with an inclinometer. Boom Centerline 3. Press ENTER. ------0 Figure 2 4. Boom up (Fig. 3) to at least 60. Verify the angle with an inclinometer. 5. Press ENTER. 6. Pressing the r and o arrows,* set the EXACT BOOM ANGLE. 7. Press ENTER. 8. Press ENTER to exit the routine. Boom Centerline Figure 3 Horizontal Boom Angle *The longer an r or o arrow is pressed, the faster the displayed numbers will change. When the arrow key is released, the flashing digit will be the digit that will change the next time an r or o arrow is pressed. 27 of 39
G Slew Offset Calibration "SLEW OFFSET" is the horizontal distance between the centerline of rotation and the boom pivot. If the pivot pin is in front of the centerline of rotation, as illustrated, the slew offset must be entered as a positive number. 1. Press the r arrow until the display reads: "CAL. SLEW OFFSET." 2. Press ENTER to start the routine. 3. Measure the horizontal distance on the crane between the centerline of rotation and the center of the boom pivot pin (Fig. 4) to get the positive SLEW OFFSET. 4. Pressing the r arrow, set the positive SLEW OFFSET. 5. Press ENTER. 6. Press ENTER to exit the routine SLEW OFFSET BOOM PIVOT CENTERLINE OF ROTATION Figure 4 28 of 39
H Main Linepull Calibration "MAXIMUM MAIN LINEPULL" is the maximum allowable tension in one part of the main winch hoist rope. 1. Press the r arrow until the display reads: "CAL. MAIN L-PULL." 2. Press ENTER to start the routine. 3. Pressing the r and o arrows, set the MAXIMUM ALLOWABLE LINEPULL of one part of the main winch hoist rope. 4. Press ENTER. 5. Verify that the value for the main linepull shown on the display is correct. 6. Press ENTER to exit the routine. 29 of 39
I Main Zero Calibration "MAIN ZERO" is the tension in the main winch hoist rope when the hook is on the ground. 1. Press the r arrow until the display reads: "CAL. MAIN ZERO." 2. Press ENTER to start the routine. 3. Put the main hook on the ground and let the lines go slack (Fig.5). 4. Press ENTER. 5. Press ENTER to exit the routine. Figure 5 30 of 39
J Main Span Calibration "MAIN SPAN" is the internal adjustment that causes the System to correctly indicate the main winch load weight. 1. Prepare to lift the main winch test weight at a safe radius (see capacity chart) for that load. Use a test weight that is heavy enough to make a single part line pull at least equal to 50% of the hoist rope maximum capacity. Example for calculating test weight: A hoist rope with a 10,000 lb. capacity reeved to 4 parts of line, at 50% of the hoist rope maximum capacity will have a minimum test weight of 20,000 lbs. (10,000 x 4 2 = 20,000). 2. Press the r arrow until the display reads: "CAL. MAIN SPAN." 3. Press ENTER to start the routine. 4. Pressing the r and o arrows, set the TEST WEIGHT. 5. Press ENTER. 6. Leaving the test weight on the ground, lift the rigging, letting it hang slack from the hook (Fig. 6). Figure 6 31 of 39
7. Press ENTER. 8. Lift the test weight off the ground (Fig. 7). 9. Press ENTER. 10. Verify that the load weight shown on the display is the test weight plus the weight of the rigging. If the weight shown on the display is correct, press ENTER to exit the routine. If the weight shown on the display is incorrect, press ENTER two times to reenter "CAL MAIN SPAN" and adjust the weight. 11. Continue with Option A or B, as appropriate: A. If there is an auxiliary hoist winch in use on the crane, complete calibration steps in Sections K, L, and M. B. If there is no auxiliary hoist winch in use on the crane, do not complete calibration steps in Sections K, L, and M. Press CANCEL to exit the calibration mode. Figure 7 32 of 39
K Aux. Linepull Calibration "MAXIMUM AUX. LINEPULL" is the maximum allowable tension in one part of the auxiliary winch hoist rope. 1. Press the r arrow until the display reads: "CAL. AUX L-PULL." 2. Press ENTER to start the routine. 3. Pressing the r and o arrows, set the MAXIMUM ALLOWABLE LINEPULL of one part of the aux. winch hoist rope. 4. Press ENTER. 5. Verify that the value for the "AUX. L-PULL" shown on the display is correct. 6. Press ENTER to exit the routine. 33 of 39
L Aux. Zero Calibration "AUX. ZERO" is the tension in the aux. winch hoist rope when the hook is on the ground. 1. Press the r arrow until the display reads: "CAL. AUX. ZERO." 2. Press ENTER to start the routine. 3. Put the Aux. hook on the ground (Fig. 8), and let the lines go slack. 4. Press ENTER. 5. Press ENTER to exit the routine. Figure 8 34 of 39
M Aux. Span Calibration "AUX. SPAN" is the internal adjustment that causes the System to correctly indicate the weight of the auxiliary winch load. 1. Prepare to lift the aux. winch test weight at a safe radius (see capacity chart) for that load. Use a test weight that is heavy enough to make a single part line pull at least equal to 50% of the hoist rope maximum capacity. Example for calculating test weight: A hoist rope with a 10,000 lb. capacity, reeved to 1 part of line, at 50% of the hoist rope maximum capacity will have a minimum test weight of 5,000 lbs. (10,000 x 1 2 = 5,000). 2. Press the r arrow until the display reads: "Cal. Aux. Span." 3. Press ENTER to start the routine. 4. Pressing the r and o arrows, set the TEST WEIGHT. 5. Press ENTER. 35 of 39
6. Leaving the test weight on the ground, lift the rigging, letting it hang slack from the hook (Fig. 9). 7. Press ENTER. Figure 9 36 of 39
8. Lift the test weight off the ground (Fig. 10). 9. Press ENTER. 10. Verify that the value shown on the display is the test weight plus the weight of the hook and rigging. If the weight shown on the display is correct, press ENTER to exit the routine. If the weight shown on the display is incorrect, press ENTER two (2) times to reenter CAL. AUX. SPAN and adjust the weight. 11. Press CANCEL to exit the CALIBRATION MODE. Figure 10 37 of 39
For Service Call GREER COMPANY TELEPHONE: (714) 259-9702 38 of 39
1918 East Glenwood Place Santa Ana, CA 92705 Telephone: (714) 259-9702 Fax: (714) 259-7626 39 of 39