Wood-mizer LT70AC Safety, Setup, Operation & Maintenance Manual
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Wood-mizer LT70AC Safety, Setup, Operation & Maintenance Manual

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Wood-Mizer
Sawmill
Safety, Setup, Operation
& Maintenance Manual
LT70AC Remote
rev. A2.02
Safety is our #1 concern! Read and understand all
!
safety information and instructions before operating,
setting up or maintaining this machine.
October 2004
Form #996

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Summary of Contents for Wood-mizer LT70AC

  • Page 1 ® Wood-Mizer Sawmill Safety, Setup, Operation & Maintenance Manual LT70AC Remote rev. A2.02 Safety is our #1 concern! Read and understand all safety information and instructions before operating, setting up or maintaining this machine. October 2004 Form #996...

  • Page 2: Table Of Contents

    Table of Contents Section-Page SECTION 1 SAFETY 1-II Safety Instructions ....................1-iii SECTION 2 SERVICING THE SAWMILL If You Need To Order Parts ..................2-1 Customer and Sawmill Identification................ 2-2 If You Need Service ....................2-4 SECTION 3 SETUP Site Preparation ......................3-1 Replacing The Blade ....................
  • Page 3 Table of Contents Section-Page SECTION 7 SAWMILL ALIGNMENT Routine Alignment Procedure ................... 7-1 Align Side Supports....................7-14 Complete Alignment Procedure ................7-15 SECTION 8 SPECIFICATIONS Log Capacity ......................8-1 Overall Dimensions ....................8-1 Motor Specifications ....................8-2 Chains ........................8-3 Hydraulic System ......................
  • Page 4 The information and instructions given in this manual do not amend or extend the limited warranties for the equipment given at the time of purchase. For general information regarding Wood-Mizer and our “Forest to Final Form” products, please refer to the All Products Catalog in your support package.
  • Page 5 Safety Symbols SECTION 1 SAFETY Safety Symbols The following symbols and signal words call your attention to instructions concerning your personal safety. Be sure to observe and follow these instructions. DANGER! indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING! suggests a potentially hazardous situation which, if not avoided, could result in death or serious injury.

  • Page 6: Safety 1-Ii

    Wood-Mizer sawmill. All Wood-Mizer mill owners are encouraged to become thoroughly familiar with these applicable laws and comply with them fully while using the mill.
  • Page 7 Safety Safety Instructions WEAR SAFETY CLOTHING WARNING! Secure all loose clothing and jewelry before operating the sawmill. Failure to do so may result in serious injury or death. WARNING! Always wear gloves and eye protection when handling bandsaw blades. Changing blades is safest when done by one person! Keep all other persons away from area when coiling, carrying or changing a blade.
  • Page 8 Safety Safety Instructions HANDLE FUEL/LUBRICANTS SAFELY WARNING! Use ONLY water or approved additives with the lube system. Never use flammable fuels or liquids. If these types of liquids are necessary to clean the blade, remove it and clean with a rag. Failure to do so may result in serious injury or death. DISPOSE OF SAWING BY-PRODUCTS PROPERLY IMPORTANT! Always properly dispose of all sawing by-products,...
  • Page 9 Safety Safety Instructions CHECK SAWMILL/BLADES BEFORE OPERATION DANGER! Make sure all guards and covers are in place and secured before operating the sawmill. Failure to do so may result in serious injury. WARNING! Blade guide alignment is essential for optimal cutting performance, blade life and safety.
  • Page 10 Safety Safety Instructions KEEP HANDS AWAY DANGER! Always shut off the sawmill and wait until the blade wheels have come to a complete stop before changing the blade. Failure to do so will result in serious injury. DANGER! Always keep hands away from moving bandsaw blade. Failure to do so will result in serious injury.
  • Page 11 Safety Safety Instructions USE PROPER PROCEDURE WHEN CONDUCTING ELECTRICAL SAFETY CHECKS AND MAINTENANCE DANGER! Make sure all electrical installation, service and/or maintenance work is performed by a qualified electrician and is in accordance with applicable electrical codes. DANGER! Hazardous voltage inside electric sawmill...
  • Page 12 Safety Safety Instructions KEEP SAFETY LABELS IN GOOD CONDITION IMPORTANT! Always be sure that all safety decals are clean and readable. Replace all damaged safety decals to prevent personal injury or damage to the equipment. Contact your local distributor, or call your Customer Service Representative to order more decals.

  • Page 13: Servicing The Sawmill If You Need To Order Parts

    If You Need To Order Parts SECTION 2 SERVICING THE SAWMILL Wood-Mizer is committed to providing you with the latest technology, best quality and strongest customer service available on the market today. We continually evaluate our customers’ needs to ensure we’re meeting current wood-processing demands. Your com- ments and suggestions are welcome.

  • Page 14: Customer And Sawmill Identification

    Customer and Sawmill Identification Customer and Sawmill Identification Each Wood-Mizer sawmill has a model number and a 17-digit Vehicle Identification Num- ber (VIN). In addition, when you pick up your mill, you will receive a customer number. These three numbers will help expedite our service to you. Please locate them now and write them below so you have quick, easy access to them.
  • Page 15 Servicing The Sawmill Customer and Sawmill Identification The model number and V.I.N. can be found in the following locations. MODEL NUMBER AND V.I.N. LOCATIONS Servicing The Sawmill 60HDdoc100206...

  • Page 16: If You Need Service

    Servicing The Sawmill If You Need Service If You Need Service From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland at +48-63-2626000 or +48-3912-1319. From the continental U.S., call us toll-free at 1-800-525-8100. Ask to speak with a Customer Service Representative. Please have your vehicle identification number and your customer number ready when you call.

  • Page 17: Setup

    SETUP Site Preparation SECTION 3 SETUP Site Preparation IMPORTANT! This information is provided so that you may have your site prepared for installation of your electric sawmill. In order to properly install your sawmill, you need 1. Prepare a firm, level area where the sawmill can be anchored. There should be enough room around the sawmill for operators, sawdust removal, log loading and board removal.
  • Page 18 SETUP Site Preparation See Table 3-2. This table lists the 25 horsepower motor specifications for your reference. 25 HP Electric Motor Specifications Horsepower 25 (18.5kW) 2930 Volts Amps 33.8 Ambient temperature -15° to +40° Insulation Class Protection Degree IP55 Duty Continuous TABLE 3-2 doc100206...
  • Page 19 SETUP Sawmill Installation Sawmill Installation Position the sawmill approximately 10 inches (250 mm) from the operator station. The operator station may be moved in the horizontal direction slightly to obtain the desired view of the sawmill. After the sawmill is positioned, make sure the horizontal locking bolt and top adjustment nut on each leg is loose.

  • Page 20: Replacing The Blade

    SETUP Replacing The Blade Replacing The Blade DANGER! Always shut off the sawmill motor before changing the blade. Failure to do so will result in serious injury. WARNING! Always wear gloves and eye protection when handling bandsaw blades. Changing blades is safest when done by one person! Keep all other persons away from area when coiling, carrying or changing a blade.

  • Page 21: Tensioning The Blade

    SETUP Tensioning The Blade Tensioning The Blade Before tensioning the blade, check the air pressure gauge to see that the air tension sys- tem is properly charged. The gauge should read 50 PSI, i.e. .34 MPa (yellow colour) with the blade tension completely released. To add air pressure, remove the air valve stem cover and attach an air pump to the air valve.

  • Page 22: Tracking The Blade

    SETUP Tracking The Blade The tension gauge should be checked occasionally when adjusting the cant control or while cutting. Ambient temperature changes will cause tension to change. Adjust the ten- sion handle as necessary to maintain the recommended tension level. Tracking The Blade 1.
  • Page 23 SETUP Tracking The Blade See Figure 3-3. Turn bolt clockwise to move blade out on DETAIL wheel; counterclock- wise to move blade in on wheel. Cant Adjustment Bolt (See Detail) FIG. 3-3 To move the blade out on the blade wheel, turn the cant adjustment bolt clockwise. To move the blade in on the blade wheel, turn the bolt counterclockwise.
  • Page 24 SETUP Tracking The Blade 10. Be sure to close the blade housing and pulley covers when the adjustment is complete. DANGER! Make sure all guards and covers are in place and secured before operating or towing the sawmill. Failure to do so may result in serious injury. Be sure the blade housing and pulley covers are closed (i.e., the safety switches located on them are engaged).

  • Page 25: Starting The Motor

    SETUP Starting The Motor Starting The Motor See the appropriate manual supplied with your specific engine/motor configuration for starting and operating instructions. DANGER! Make sure all guards and covers are in place and secured before operating or towing the sawmill. Failure to do so may result in serious injury.

  • Page 26: Initial Control Programming

    Kerf Value The kerf value setting can range from 0 to 10 mm. For standard Wood-Mizer blades, the kerf value should be set to 2 - 3 mm. If it is set to 0 mm, the blade kerf size will not be automatically added to the board thickness setting to compensate for the thickness of the blade.
  • Page 27 SETUP Max Head H (upper saw head travel limit) See Figure 3-4. Last Cut ac_s002 FIG. 3-4 3.7.2 Max Head H (upper saw head travel limit) The Max Head H (upper saw head travel limit) is programmable (from 100mm to 885mm, the maximum height allowed by the length of the sawmill mast).
  • Page 28 SETUP PF adjustment (power feed dial calibration) To calibrate the power feed dial, press the top button on the left joystick when „PF Adjustment” has appeared on the display. „PF Min” message should be displayed. Turn the power feed dial to a point where you want the saw head speed to be 0 (for this position of the dial the head speed will be 0).

  • Page 29: Operation

    Operation Control Overview SECTION 4 OPERATION Control Overview The LT70 Remote control was designed to allow the operator to control the sawing operation with minimal effort and movement. See Figure 4-1. The control includes several sets of buttons for controlling how the sawmill is programmed to cut a log.
  • Page 30 Operation Control Overview 1. START/STOP button – starts/turns off the blade motor. 2. BED light – When lit, indicates that the joystick controls are in BED mode. The joysticks can be used for log handling functions. 3. HEAD – When lit, the joystick controls are in HEAD mode. The joysticks can be used to operate saw head functions.
  • Page 31 Operation Control Overview 16. Emergency Stop button. 17. Feed Rate Dial. 18. Left joystick. 19. Sawdust Blow-Off Switch - used to turn on/off the air blow-off which removes sawdust from the wood being cut while the saw head is moving in reverse. 20.

  • Page 32: Controlling The Sawmill

    Controlling The Sawmill Controlling The Sawmill LT70AC Remote sawmills are operated with the controls located on the front panel of the control box. Most of the sawmill head and bed functions are performed with two joysticks (left and right). The joysticks can work in two control modes: Head Mode Bed Mode.
  • Page 33 Operation Performing Log Handling Functions See Figure 4-2. Group No. 1 of the log handling functions (neither of the joystick top buttons has to be pressed). Turner Right Turner Up Main Clamp Main Clamp Right Down Turner Down Turner Left Main Clamp Main Clamp Left...
  • Page 34 Operation Performing Log Handling Functions See Figure 4-3. Group No. 2 of the log handling functions (either of the joystick top buttons has to be pressed and held). Rear Toe Board Loader Up Down Middle Toe Board Front Toe Board Down Loader Down Rear Toe Board...
  • Page 35 Operation Performing Log Handling Functions See Figure 4-4. Group No. 3 of the log handling functions (both joystick top buttons have to be pressed and held). Rear Pull Down Clamp Rear Pull Down Clamp Down Right Front Pull Down Clamp Front Pull Down Clamp Right Down...
  • Page 36 Operation Performing Head Functions 4.2.5 Performing Head Functions To perform any of the head functions, first check if the yellow HEAD light is lit. If this light is on, the joystick controls are in HEAD mode and you can operate all saw head functions.
  • Page 37 Operation Performing Head Functions See Figure 4-7. Using the right joystick, you can also move the debarker (optional sawmill equipment) against or away from the log. To move the debarker in or out, press and hold the top button on this joystick and then push the joystick as shown below. Debarker Debarker Debarker...
  • Page 38 4.2.8 Up/Down Operation In LT70AC Remote sawmills the upward/downward movement of the saw head can be controlled manually (MANUAL mode) or automatically (REF/PAT/BED REF modes). In MANUAL mode the operator must position the saw head for the first cut by pushing or pulling and holding the left joystick.
  • Page 39 Operation Programming board and cant thicknesses (possible only when REF1, REF2, PAT1, PAT2 or (i.e. each board being cut, up to the last one, is of the same thickness), he can use BED REF function (the blue BED REF button on the control panel). 4.2.9 Programming board and cant thicknesses (possible only when REF1, REF2, PAT1, PAT2 or BED REF is enabled)
  • Page 40 Operation Programming board and cant thicknesses (possible only when REF1, REF2, PAT1, PAT2 or FIG. 4-10 When you first turn on the machine after its installation, the following board thicknesses are in the computer memory: Board 1 - 25mm Board 2 - 35mm Board 3 - 50mm Board 4 - 75mm Board 5 - 80mm...
  • Page 41 Operation Programming board and cant thicknesses (possible only when REF1, REF2, PAT1, PAT2 or 2. You will enter the Setup function (Edit Mode). 3. Push the top button on the right joystick (end MEMORY BANK button if desired) as many times as necessary to access the board thickness (storage cell) you want to change.
  • Page 42 Operation REF functions (temporary referencing the blade location) 4.2.11 REF functions (temporary referencing the blade location) REF1 and REF2 functions, as mentioned ealier in this section, are typically used when sawing a log down to a cant, i.e., until all four sides of the log are flat. With a new log loaded and clamped in position on the sawmill bed, press the white HEAD/BED button to activate HEAD mode.
  • Page 43 Operation REF functions (temporary referencing the blade location) blade over the slab. Once the blade is above the slab, release the joystick then pull it back again and release. (The display should read “ABORT!!! ABORT!!!”.) This will abort the control before it reaches the next programmed target, preventing it from replacing the stored position of the blade during the last cut.
  • Page 44 Operation REF functions (temporary referencing the blade location) REF 1/ REF LOCK BOARD THICK- NESS 1 Using the procedure described above, make cuts on the third side of the log as REF 1 desired. REF 2 SIDE 3 When the log is ready for making cuts on REF 2/ its fourth side, activate HEAD mode REF LOCK...
  • Page 45 Operation REF functions (temporary referencing the blade location) NOTE: The fact that the saw head stops and starts moving in a reverse direction after releasing the joystick, with the NEXT CUT function on (REF1 or REF2 light is flashing, REF LOCK light is illuminating), is often considered a fault by operators.
  • Page 46 Operation REF functions (temporary referencing the blade location) illuminate). To make the cut, use the left joystick as described above. After turning the cant again and levelling it on the sawmill bed, activate HEAD mode again and press the REF2 button twice (the button light will start flashing). The REF LOCK function will turn on automatically (the REF LOCK button will illuminate).
  • Page 47 Operation REF functions (temporary referencing the blade location) See Figure 4-13. Example: The saw head is at the height of 300 mm, the REF1 and REF LOCK functions are turned on (REF1 and REF LOCK lights are on steady state, the display reads: „Ref 1 Lock 300mm”).
  • Page 48 Operation PAT and BED REF (referencing the blade position from the bed surface) 4.2.14 PAT and BED REF (referencing the blade position from the bed surface) The PAT and BED REF functions are typically used after the log has been squared, i.e., for cutting a cant.
  • Page 49 Operation PAT and BED REF (referencing the blade position from the bed surface) See Figure 4-15. Example: In this example the blade kerf is 0. You are sawing 30-mm-thick boards from a 500-mm-thick (high) cant and want to finish with a 100-mm-thick cant.
  • Page 50 Operation PAT and BED REF (referencing the blade position from the bed surface) NOTE! If you change the board thickness dimension while using PAT1, PAT2 or BED REF button Board Blade location when the board 35mm Thickness thickness was changed to 25 mm 10mm Corrective Cut Board...

  • Page 51: Wear Life

    Maintenance Wear Life SECTION 5 MAINTENANCE This section lists the maintenance procedures that need to be performed. The Short Interval Maintenance Schedule lists procedures that need to be performed every 4, 8 or 24 hours. The Maintenance Log lists procedures that need to be performed every 50, 100, 200, or 1000 hours.

  • Page 52: Blade Guides

    Maintenance Blade Guides Blade Guides 1. Check the rollers for performance and wear every blade change. Make sure the rollers are clean and spinning freely. If not, rebuild them. Replace any rollers which have worn smooth or have become cone shaped. Steel Guide Blocks 2.
  • Page 53 Maintenance Steel Guide Blocks See Figure 5-1. To adjust the disks up, loosen the bottom guide disk mounting bolt and clamp bolt. Use the provided adjustment tool to raise bottom disk. Retighten the bottom disk mounting bolt and clamp bolt. IMPORTANT! The ceramic inserts should be parallel to the blade.

  • Page 54: Sawdust Removal

    Maintenance Sawdust Removal to premature blade breakage. If the blade breaks during operation and the blade has multiple stress cracks, the blade could shatter into several pieces and escape from the protective guards of the sawmill. Small blade pieces projected into the area around the sawmill creates a safety hazard for the operator and any bystanders surrounding the mill.

  • Page 55: Carriage Track, Wiper & Scrapers

    Maintenance Carriage Track, Wiper & Scrapers Carriage Track, Wiper & Scrapers Properly maintaining the sawmill carriage track is critical in preventing corrosion that can cause pitting and scaling on the rail surfaces. Pitted and scaled surfaces can, in turn, cause rough cuts or jerky power feed movement. See Figure 5-3.

  • Page 56: Vertical Mast Rails

    Maintenance Vertical Mast Rails Clean and lubricate track wiper Adjust track scrapers Clean sawdust from track roller Track housings Rail 600011 FIG. 5-3 Vertical Mast Rails Clean and lubricate the vertical mast rails every 50 hours of operation. Use a light-grade sandpaper to remove any rust from them.

  • Page 57: Miscellaneous

    Maintenance Miscellaneous Miscellaneous 1. Oil all chains with Dexron III ATF every fifty hours of operation. CAUTION! Do not use chain lube. It causes sawdust buildup in chain links. 2. Apply a thin film of a NLGI No. 2 grade lithium grease to the blade guide arm every fifty hours of operation to help prevent it from rusting.
  • Page 58 Maintenance Drive Belt Adjustment counterclockwise to reduce the tension. Turn clockwise to tighten Turn counter - clockwise to loosen 600027 FIG. 5-4 60HDdoc100206 Maintenance...

  • Page 59: Hydraulic System

    Maintenance Hydraulic System Hydraulic System 1. Check the hydraulic fluid level every fifty hours of operation. Add fluid as necessary. The level in the hydraulic pump should be 3/4" (19mm) from the top with all cylinders collapsed. If humidity is a problem or the mill is used outside in humid weather, drain and replace two quarts (.95 liters) of fluid every six months.

  • Page 60: Up/Down System

    Maintenance Up/Down System Up/Down System Adjust the up/down chain tension as needed. Measure chain tension with the head all the way to the top of the vertical mast. Find the chain adjusting bolt at the bottom of the mast. Use the adjustment nut to adjust the bolt until the center of the chain can be deflected 3/4”...
  • Page 61 Up/Down System See Figure 5-7. Mounting Bolts Adjustment Bolts FIG. 5-7 Periodically check the belt for wear. Replace any damaged or worn belts as needed. 5. If oil leaks from the gear box, contact Wood-Mizer Customer Service. Maintenance 60HDdoc100206 5-11...

  • Page 62: 5.10 Power Feed System

    L type frame) from the top of the top rail at its lowest point. CAUTION! Do not overtighten the feed chain. Damage to the gear reducer may result. See Figure 5-8. Adjustment Nuts Sm0145 FIG. 5-8 2. If oil leaks from the gear box, contact Wood-Mizer Customer Service. 5-12 60HDdoc100206 Maintenance...
  • Page 63 Troubleshooting Guide Sawing Problems SECTION 6 TROUBLESHOOTING GUIDE Sawing Problems PROBLEM CAUSE SOLUTION BLADES DULL QUICKLY Dirty logs. Clean or debark logs, especially on entry side of the cut. When grinding teeth, heating Grind just enough metal to restore too much and causing teeth to sharpness to the teeth.

  • Page 64: Troubleshooting Guide Sawing Problems

    Troubleshooting Guide Sawing Problems PROBLEM CAUSE SOLUTION BOARDS THICK OR THIN ON Stress in log which causes log After log has been squared, take ENDS OR MIDDLE OF BOARD to not lay flat on the bed. equal cuts off opposing sides. Take a board off the top.
  • Page 65 Troubleshooting Guide Sawing Problems CONTROL UNIT DOES NOT Perform the following RESET WORK PROPERLY procedure. Turn off the power. Press and hold REF LOCK + MANUAL buttons. Turn on the power. ATTENTION! All user settings (boards thicknesses etc.) will be lost.

  • Page 66: Power Feed Problems

    Troubleshooting Guide Power Feed Problems Power Feed Problems PROBLEM CAUSE SOLUTION POWER FEED IS JERKY AT Loose components or wire Have the control box LOW SPEEDS OR DOES NOT terminals. checked/repaired. MOVE AT ALL Feed rate dial is worn. Replace feed rate dial. Speed controller is locked.
  • Page 67 Troubleshooting Guide Power Feed Problems PROBLEM CAUSE SOLUTION POWER FEED MOTOR OVER- Middle track oiler is dragging. Clean and lubricate the middle HEATS (MOTOR track oiler. Allow motor to cool TEMPERATURE IS ABOVE before restarting. ° 75 C Ground is not level. Level the sawmill.

  • Page 68: Hydraulic Problems

    Troubleshooting Guide Hydraulic Problems Hydraulic Problems PROBLEM CAUSE SOLUTION YOU CAN ACTUATE ANY Carriage not positioned Move the saw carriage so that it HYDRAULIC HANDLE, BUT properly to provide power to contacts the hydraulic power supply GET NO RESPONSE FROM the pump.
  • Page 69 Pressure relief valve moved Adjust pressure relief valve. It can be from proper setting. done by Wood-Mizer Customer Service only. Low air temperature causing Allow fluid to warm up. Synthetic fluids hydraulic fluid to thicken.
  • Page 70 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION HYDRAULIC SIDE SUP- Dirt in sequence valve. Remove sequence valves and clean PORTS GO DOWN BEFORE thoroughly with kerosene. NOTE: Be OR AT SAME TIME AS LOG sure to reassemble the valve and TURNER install it in its original position on the cylinder.
  • Page 71 Troubleshooting Guide Hydraulic Problems HYDRAULIC TOE BOARDS Can be a result of failing to INITIAL CHECK OR CLAMP "CREEP" DOWN lower completly the toe To check, disconnect the toe board WITHOUT THE JOYSTICK board/log clamp before load- hydraulic hose from its current valve BEING OPERATED OR DO ing the log and hitting the toe section and temporarily connect it to...

  • Page 72: Motor And Drive Pulleys Alignment (Ac Sawmills Only)

    Troubleshooting Guide Motor And Drive Pulleys Alignment (AC Sawmills Only) Motor And Drive Pulleys Alignment (AC Sawmills Only) WARNING! Do not for any reason adjust the motor drive belts or belt support bracket with the motor running. Doing so may result in serious injury. 1.

  • Page 73: Power Feed Mechanical Test

    Troubleshooting Guide Power Feed Mechanical Test Power Feed Mechanical Test 1. If on the saw head there is anything other than its components, remove it. 2. Make sure the middle track cover is not bent or touching the top rail. 3.

  • Page 74: Hydraulic Pressure Test

    Troubleshooting Guide Hydraulic Pressure Test Hydraulic Pressure Test Perform the procedure described below to check, and adjust the hydraulic pressure, if necessary. See Figure 6-9. FIG. 6-9 Activate BED mode (See Section 4.2.1 Performing Log Handling Functions). Then engage any of the log handling units except for the log turner. Wait until the cylinder is all the way out.

  • Page 75: Sawmill Alignment

    SECTION 7 SAWMILL ALIGNMENT The Wood-Mizer sawmill is factory aligned. Two alignment procedures are available to realign the sawmill if necessary. The Routine Alignment instructions should be performed as necessary to solve sawing problems not related to blade performance. The Complete Alignment procedure should be performed approximately every 1500 hours of operation (sooner if you regularly transport the sawmill over rough terrain).
  • Page 76 SAWMILL ALIGNMENT Saw Head Tilt Saw Head Tilt As the blade enters a wide log or cant, the outside of the saw head will drop down slightly. To compensate for the drop, the saw head is adjusted 1/16" (1.5 mm) higher at the out- side.
  • Page 77 SAWMILL ALIGNMENT Saw Head Tilt (1.5 mm) higher than the inside. Retighten the retaining plate bolts. 600011-4a Retaining Adjustment Bolt Plate Bolts Adjustment Bolt Stop Bolt Tighten adjustment bolts to raise saw head; Stop Bolt Loosen adjustment bolts to lower saw head DETAIL OF LOWER TRACK ROLLER ASSEMBLY FIG.
  • Page 78 SAWMILL ALIGNMENT Blade Guide Arm Alignment Blade Guide Arm Alignment The blade guide arm moves the outer blade guide in and out. If the arm becomes loose, the blade guide will not deflect the blade properly, causing inaccurate cuts. A loose blade guide arm can also cause blade vibration.
  • Page 79 SAWMILL ALIGNMENT Blade Guides After tightening the blade guide arm rollers, check that the arm is aligned properly. Blade Guides 3. With the arm adjusted 1/2" (15 mm) from fully closed, measure the distance between the blade guide roller flange and the blade. If the sawmill is equipped with optional blade guides (with two guide inserts in each blade guide), measure from the blade to the guide roller.
  • Page 80 SAWMILL ALIGNMENT Blade Guides jam nuts and recheck the blade guide arm horizontal tilt. Left Horizontal Right Horizontal Adjustment Bolt Adjustment Bolt FIG. 7-5 5. Now check the vertical tilt of the blade guide arm. Move the saw carriage so the blade guide arm is positioned over a bed rail.
  • Page 81 SAWMILL ALIGNMENT Blade Guides See Figure 7-6. Measure from blade guide arm to bed rail with arm open and closed 600025-2a FIG. 7-6 7. Adjust the blade guide arm to 1/2" (15 mm) from fully open. Measure the distance from the bottom of the blade guide mounting block to the bed rail.
  • Page 82 SAWMILL ALIGNMENT Blade Guides arm vertical tilt. Left Vertical Adjust- Right Vertical ment Bolt Adjustment Bolt FIG. 7-7 60HDdoc042607 SAWMILL ALIGNMENT...
  • Page 83 SAWMILL ALIGNMENT Blade Guide Vertical Tilt Adjustment Blade Guide Vertical Tilt Adjustment The blade guides should be adjusted properly in the vertical plane so that the blade is parallel to the bed rails. A Blade Guide Alignment Tool (BGAT) is provided to help you measure the vertical tilt of the blade.
  • Page 84 SAWMILL ALIGNMENT Blade Guide Vertical Tilt Adjustment See Figure 7-9. Loosen the jam nuts on the top and bottom vertical tilt adjustment Adjustment Screw 600034b Adjust screws down to tilt roller up; Adjust screws up to tilt roller down Bottom Vertical Tilt Adj t FIG.
  • Page 85 SAWMILL ALIGNMENT Blade Guide Horizontal Tilt Adjustment 7.1.10 Blade Guide Horizontal Tilt Adjustment If the blade guides are tilted in the wrong direction horizontally, the back of the blade may contact the flange as the roller is spinning down, causing it to push the blade away from the guide roller.
  • Page 86 SAWMILL ALIGNMENT Blade Guide Horizontal Tilt Adjustment The roller should be tilted slightly to the left (’A’ 1/8" [3 mm] less than ’B’). See Figure 7-12. Loosen the jam nuts on the horizontal tilt adjustment screws. To tilt the roller left, loosen the right screw and tighten left screw. To tilt the roller right, loosen the left screw and tighten the right screw.
  • Page 87 SAWMILL ALIGNMENT Blade Guide Roller Flange Spacing Blade Guide Roller Flange Spacing Each blade guide must be adjusted so the roller flange is the correct distance from the back edge of the blade. If the flange is too close to or too far from the blade, the sawmill will not cut accurately.

  • Page 88: Align Side Supports

    SAWMILL ALIGNMENT Align Side Supports Align Side Supports See Figure 7-14. Place two square tubes or straight board across the bed rails in front of one of the side supports. Use the controls to raise the side supports all the way up. Set a square on the tubes or board and place against the side support.

  • Page 89: Complete Alignment Procedure

    SAWMILL ALIGNMENT Complete Alignment Procedure Complete Alignment Procedure Frame Setup Before performing the following alignment procedures, setup the mill on firm, level ground. The stationary sawmill must be setup on perfectly level ground so that the weight of the sawmill is evenly supported by all legs. See Section 3.1 SAWMILL ALIGNMENT 60HDdoc042607...
  • Page 90 SAWMILL ALIGNMENT Blade Installation And Tracking Blade Installation And Tracking 1. Remove the blade and replace the blade wheel belts. New blade wheel belts are required to perform the complete alignment procedure. 2. Blow sawdust off of the blade guide assemblies. Remove sawdust from the blade housings.
  • Page 91 SAWMILL ALIGNMENT Blade Wheel Alignment Blade Wheel Alignment The blade wheels should be adjusted so they are level in the vertical and horizontal planes. If the blade wheels are tilted up or down, the blade will want to travel in the tilted direction.
  • Page 92 SAWMILL ALIGNMENT Blade Wheel Alignment Adjust vertical adjustment screws up to tilt drive-side blade wheel down; Adjust screws down to tilt wheel up FIG. 7-16 5. Recheck the vertical tilt of the drive-side blade wheel with the blade guide alignment tool. Readjust the blade wheel as necessary until the front and rear of the tool are the same distance from the bed rail (within 1/16"...
  • Page 93 SAWMILL ALIGNMENT Blade Wheel Alignment See Figure 7-17. Use the vertical adjustment screws to adjust the idle-side blade wheel. To tilt the wheel up, loosen the bottom adjustment screw one quarter turn. Loosen the jam nut on the top adjustment screw and tighten the screw. Tighten the top and bottom jam nuts.
  • Page 94 SAWMILL ALIGNMENT Blade Wheel Alignment 9. Check the position of the blade on the idle-side blade wheel. See Figure 7-18. The horizontal tilt of the blade wheel should be adjusted so that the gullet of a 1-1/4" blade is 1/8" (3 mm) out from the front edge of the wheel (± 1/16" [1,5 mm]).The gullet of a 1-1/2"...
  • Page 95 SAWMILL ALIGNMENT Blade Wheel Alignment 10. Check the position of the blade on the drive-side blade wheel. The blade should be positioned on the wheel as described for the idle-side blade wheel. Adjust the drive-side blade wheel if necessary. See Figure 7-20. Use the horizontal adjustment screw to adjust the drive-side blade wheel.
  • Page 96 SAWMILL ALIGNMENT Blade Wheel Alignment See Figure 7-21. To adjust the saw head tilt, use the bolts located at the bottom of the saw head mast. Loosen the three sets of four retaining plate bolts. To raise the outside of the saw head, back the stop bolts out, then tighten the adjustment bolts.
  • Page 97 SAWMILL ALIGNMENT Blade Wheel Alignment See Figure 7-22. Loosen the bed rail clamping bolts and turn the adjustment bolts to move the bed rails to the blade if necessary. Retighten the clamping bolts and adjustment bolt jam nuts. FIG. 7-22 11.
  • Page 98 Blade Guide Installation Blade Guide Installation Each Wood-Mizer sawmill has two blade guide assemblies that help the blade maintain a straight cut. The two blade guide assemblies are positioned on the saw head to guide the blade on each side of the material being cut.
  • Page 99 SAWMILL ALIGNMENT Blade Guide Installation counterclockwise to raise the top disk all the way up. Remove the bottom guide disk from each blade guide assembly and install the provided alignment bar. 3. Install each blade guide assembly to the mounting blocks and push all the way back. Install, tension and track the blade.
  • Page 100 SAWMILL ALIGNMENT Blade Guide Arm Alignment Blade Guide Arm Alignment The blade guide arm moves the outer blade guide in and out. If the arm becomes loose, the blade guide will not deflect the blade properly, causing inaccurate cuts. A loose blade guide arm can also cause blade vibration.
  • Page 101 SAWMILL ALIGNMENT Blade Guide Arm Alignment After tightening the blade guide arm rollers, check that the arm is aligned properly. 3. With the arm adjusted 1/2" (15 mm) from fully closed, measure the distance between the blade guide roller and the blade. See Figure 7-26.
  • Page 102 SAWMILL ALIGNMENT Blade Guide Arm Alignment See Figure 7-27. Loosen the horizontal adjustment bolt jam nuts. To tilt the arm in toward the blade, loosen the right bolt and tighten the left bolt. To tilt the arm out away from the blade, loosen the left bolt and tighten the right bolt.
  • Page 103 SAWMILL ALIGNMENT Blade Guide Arm Alignment See Figure 7-28. Adjust the blade guide arm to 1/2" (15 mm) from fully open. Remeasure the distance from the blade guide mounting block to the bed rail. This measurement should be 15" (375 mm) or slightly higher because the saw head is tilted up 1/16" (1.5 mm) on the outside (See Saw Head Tilt).
  • Page 104 SAWMILL ALIGNMENT Blade Guide Arm Alignment See Figure 7-29. Loosen the vertical adjustment bolt jam nuts. To tilt the blade guide arm down, loosen the right bolt and tighten the left bolt. To tilt the blade guide arm up, loosen the left bolt and tighten the right bolt.
  • Page 105 SAWMILL ALIGNMENT Blade Deflection Blade Deflection Perform the following steps to achieve proper blade deflection with the blade guides. 1. Raise the carriage until the blade is 15" (375 mm) above a bed rail. Measure the distance from the top of the rail to the bottom of the blade. See Figure 7-30.
  • Page 106 SAWMILL ALIGNMENT Blade Guide Vertical Tilt Adjustment Blade Guide Vertical Tilt Adjustment The blade guides should be adjusted properly in the vertical plane so that the blade is parallel to the sawmill bed. A Blade Guide Alignment Tool (BGAT) is provided to help you measure the vertical tilt of the blade.
  • Page 107 SAWMILL ALIGNMENT Blade Guide Vertical Tilt Adjustment See Figure 7-32. Loosen the jam nuts on the top and bottom vertical tilt adjustment screws. To tilt the roller up, loosen the bottom screw and tighten top screw. To tilt the roller down, loosen the top screw and tighten the bottom screw.
  • Page 108 SAWMILL ALIGNMENT Blade Guide Horizontal Tilt Adjustment Blade Guide Horizontal Tilt Adjustment If the blade guides are tilted in the wrong direction horizontally, the back of the blade may contact the flange as the roller is spinning down, causing it to push the blade away from the guide roller.
  • Page 109 SAWMILL ALIGNMENT Blade Guide Horizontal Tilt Adjustment See Figure 7-34. Loosen the jam nuts on the horizontal tilt adjustment screws. To tilt the roller left, loosen the right screw and tighten left screw. To tilt the roller right, loosen the left screw and tighten the right screw.
  • Page 110 SAWMILL ALIGNMENT Blade Guide Flange Spacing Blade Guide Flange Spacing Each blade guide must be adjusted so the roller flange is the correct distance from the back edge of the blade. If the flange is too close to or too far from the blade, the sawmill will not cut accurately.
  • Page 111 SAWMILL ALIGNMENT Blade Guide Levelling Blade Guide Levelling Perform the following steps to make sure the blade guide assembly is parrarel to the blade. 1. Loosen the alignment bar mounting bolt. Use the provided adjustment tool to adjust the alignment bar up so the bar is close to, but not touching the bottom of the blade. Retighten the alignment bar mounting bolt.
  • Page 112 SAWMILL ALIGNMENT Guide Disk Adjustment Guide Disk Adjustment 1. Remove the blade and the alignment bars from the blade guide assemblies. Install new or reconditioned bottom guide disks to both blade guide assemblies (leave mounting bolts loose). Use the provided bottom disk adjustment tool to lower the bottom disk all the way down.
  • Page 113 SAWMILL ALIGNMENT Align Side Supports Align Side Supports See Figure 7-38. Place two square tubes or straight board across the bed rails in front of one of the side supports. Use the controls to raise the side supports all the way up. Set a square on the tubes or board and place against the side support.
  • Page 114 SAWMILL ALIGNMENT Main Clamp Stop Adjustment Main Clamp Stop Adjustment 1. Once the side supports are aligned, lower them down. 2. Tie a string to the stop block at the first bed rail. Stretch the string toward the rear of the frame and tie to the stop block at the last bed rail.
  • Page 115 SAWMILL ALIGNMENT Saw Head Tilt Saw Head Tilt As the blade enters a wide log or cant, the outside of the saw head will drop down slightly. To compensate for the drop, the saw head is adjusted 1/16" (1.5 mm) higher at the outside.
  • Page 116 SAWMILL ALIGNMENT Saw Head Tilt (1.5 mm) higher than the inside. Retighen the retaining plate bolts. 600011-4a Retaining Adjustment Bolt Plate Bolts Adjustment Bolt Stop Bolt Tighten adjustment bolts to raise saw head; Stop Bolt Loosen adjustment bolts to lower saw head DETAIL OF LOWER TRACK ROLLER ASSEMBLY FIG.

  • Page 117: Specifications Log Capacity

    Specifications Log Capacity SECTION 8 SPECIFICATIONS Log Capacity See Table 8-1. The log size capacities of the LT70 Remote sawmill are listed below. LT70 Remote Maximum Log Diameter 93 cm Maximum Log Length 6.7 m Maximum Log Weight 3000kg TABLE 8-1 Overall Dimensions See Table 8-2.

  • Page 118: Motor Specifications

    Poland TABLE 8-3 The electric motors supplied on Wood-Mizer sawmills carry a rating assigned by the motor manufacturer for the continuous duty operation of the motor, potentially, 24 hours per day, day after day. See Table 8-4. The table below contains specifications of the remaining electric motors used in LT70 AC Remote sawmills.

  • Page 119: Chains

    Maximum Pressure 20MPa (2900 PSI) (AC) TABLE 8-7 Belt Sizes See Table 8-8. Belt sizes for LT70 Series sawmills are shown below. Description Belt Size Wood-Mizer Part # Drive Belt ( E25 ) 3B/HB 089464 2462La Up/Down Drive Belt HA560...

  • Page 120: Blade Sizes

    Blade Sizes Blade Sizes See Table 8-9. Wood-Mizer TRU•SHARP™ offers three types of blades to provide effi- cient sawing for all models of sawmills. The engine/motor size of your sawmill and the type of wood you saw should determine which blade you choose for optimum perfor- mance.

  • Page 121: Hydraulic System

    HYDRAULIC SYSTEM Hydraulic Hoses, LT70 Remote SECTION 9 HYDRAULIC SYSTEM Hydraulic Hoses, LT70 Remote “A” HD0017 Symbol Color Qty. Length Application Wood-Mizer Code "A" Part No. Black/ 3/8” Log Infeed Deck 094588 brown Orange 4.4m 3/8” 2-Plane Clamp, In/Out 094589 White 4.6m...

  • Page 122: Section 10 Electrical Information

    Electrical information Electrical Component List SECTION 10 ELECTRICAL INFORMATION 10.1 Electrical Component List Symbol Description WM Part No. Switch, ABB OT45E3 Motor Switch, GV3ME40 090436 1M, 2M Contactor, LC1 D18 B7 084306 Contactor, LC1 D09 B7 084305 2S, 5S, 6S, 7S Contactor, LC1K0610B7 084308 1S, 3S, 4S...
  • Page 123 Electrical information Electrical Component List Ps1/L1, Ps11 START-STOP Switch, M22 090452 Hour Meter, SH17 10-30VDC 095479 Key Switch, M22 091361 Debarker Switch 091467 Transfer Deck Switch 091359 Log Infeed Deck Switch 091360 P1, P2, P3, P4, Relay, Finder 40.52.24V DC 090515 P5,Pp Direct 06...
  • Page 124 Electrical Information Electrical Diagrams DIAGRAM (1 OF 12) S i l n i k g ł ó w n H a m u s i l n i k a g ł ó w n P o s u w P .
  • Page 125 Electrical Information DIAGRAM (2 OF 12) P r z e n o ś t a ś m o w P o m p a h y d r a u l K o r o w R a m p a z a ł a d o w Infeed Deck Debarker...
  • Page 126 Electrical Information DIAGRAM (3 OF 12) 240VAC 240VAC 14VAC C60N 1P 6A -12DC +12DC ABL7 Re2402 C60N 1P 2A ABL7 RE2405 +24 Sol AC(L) AC(N) DO-06DR C60N 1P 1A 240VAC 240VAC D40doc100206 Electrical Information...
  • Page 127 Electrical Information DIAGRAM (4 OF 12) 6 0 N 1 P 2 A o m p a y d r a u l i c z n a a m p a a ł a d o w c z a o r o w a r k a P r z e n o ś...
  • Page 128 Electrical Information DIAGRAM (5 OF 12) Blade Guide Arm Left Blade Guide Arm Right Debarker Left Debarker Right Hydraulic - start +12DC +24 DC D40doc100206 Electrical Information...
  • Page 129 Electrical Information DIAGRAM (6 OF 12) Ps11 Left Joystick forward Ps12 Left Joystick backward Ps13 Left Joystick right Ps14 Left Joystick left Ps15 Left Joystick upper button Ps16 Right Joystick forward Ps17 Right Joystick backward Ps18 Right Joystick right Ps19 Right Joystick left Ps20 Right...
  • Page 130 Electrical Information DIAGRAM (7 OF 12) +24 DC REF 1 Button REF 2 Button REF LOCK Button AUTO / MANUAL Button PAT 1 Button PAT 2 Button HEAD / BED Button Ps10 BED REF Button Analog Module In2 Input IN 4 IN 1 In1 Input F04AD2DA-1...
  • Page 131 Electrical Information DIAGRAM (8 OF 12) +24 DC Blow off Head Forward Y110 Y110 Head Backward Y111 Y111 Head Up Y112 Head Down Y112 Y113 Y113 REF 1 Light Y121 REF 2 Light Y121 X122 REF LOCK Light X122 Y123 AUTO / MANUAL Light Y123 Y124...
  • Page 132 Electrical Information DIAGRAM (9 OF 12) +24 Sol +24 Sol Blow off A5 (II) Front Clamp B5 (II) Front Clamp A7 (II) Front Clamp B7 (II) Front Clamp Down 2-Plane Clamp 2-Plane Clapm 2-Plane Clamp 2-Plane Clamp down +24 Sol A-11 D40doc100206 Electrical Information...
  • Page 133 Electrical Information DIAGRAM (10 OF 12) +24 Sol A2 (II) Rear Clamp B2 (II) Rear Clamp A4 (II) Rear Clamp B4 (II) Rear Clamp Down A8 (II) Turner Right B8 (II) Turner Left Turner Up Side Supports Turner Dwon Side Supports Down +24 Sol Form #1014...
  • Page 134 Electrical Information DIAGRAM (11 OF 12) +24 Sol Log Arms Up Y100 Y100 Log Arms Down Y101 Y101 Front Toe Board Y102 Y102 Front Toe Board Down Y103 Y103 Rear Toe Board Y104 Y104 Rear Toe Board Down Y105 Y105 Y106 Y107 Bypass...
  • Page 135 Electrical Information DIAGRAM (12 OF 12) +24 DC OUT2 Power Feed adjustment OUT1 F04AD2-DA1 Up/Down Drive adjustment Form #1014 doc100206 A-14...

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