Wood-mizer HR250 Operation Manual
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Wood-mizer HR250 Operation Manual

Twin head horizontal band resaw
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HR250
TWIN HEAD HORIZONTAL
BAND RESAW
OPERATION MANUAL
NOTE
• The operator must thoroughly read this manual
before operation.
• Keep this manual for future reference.
Form 2368

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Summary of Contents for Wood-mizer HR250

  • Page 1 HR250 TWIN HEAD HORIZONTAL BAND RESAW OPERATION MANUAL NOTE • The operator must thoroughly read this manual before operation. • Keep this manual for future reference. Form 2368...

  • Page 2: Table Of Contents

    CONTENTS GENERAL SAFETY RULES FOR WOODWORKING MACHINERY..........1 SAFETY RULES FOR HORIZONTAL BAND RESAW................ 4 MACHINE SPECIFICATIONS......................8 LIFTING THE MACHINE........................10 UNPACKING AND CHECKING CONTENTS..................12 CLEANING THE MACHINE........................ 13 INSTALLING MACHINE........................14 LEGEND OF THE MACHINE (FRONT VIEW).

  • Page 3: General Safety Rules For Woodworking Machinery

    GENERAL SAFETY RULES FOR WOODWORKING MACHINERY WARNING Do not attempt to operate until you have read thoroughly and understood completely all instructions, rules etc. contained in this manual. Failure to comply can result in accidents involving fire, electric shock, or serious personal injury. Keep this operation manual and review frequently for continuous safe operations.
  • Page 4 GENERAL SAFETY RULES FOR WOODWORKING MACHINERY 9. Do not force the machine. It will do the job better and be safer at the rate for which it was designed. 10. Use the right tools. Do not force the machine or attachments to do a job for which they were not designed for.
  • Page 5 Use a wood dust collection system whenever possible. The HR250 Resaw is intended for sawing wood only. The machine must not be used for other purposes such as cutting ice, metal or any other materials.

  • Page 6: Safety Rules For Horizontal Band Resaw

    SAFETY RULES FOR HORIZONTAL BAND RESAW 1. Do not attempt to remove any object from the conveyor belt when the machine is running. 2. The sawblade is very sharp. Care should be taken when replacing the sawblade. 3. Turn the power off before performing maintenance or servicing. 4.
  • Page 7 SAFETY RULES FOR HORIZONTAL BAND RESAW The blade tension should be released when the machine is not in use (e.g.: after a shift). There should be information on the machine that it is necessary to tension the blade before starting to use the machine again. Before installation of the blade, inspect it for damage and cracks.
  • Page 8 SAFETY RULES FOR HORIZONTAL BAND RESAW Safety Labels Description See Table 1-1. Pictogram decals used to warn and inform the user about danger in the saw...
  • Page 9 SAFETY RULES FOR HORIZONTAL BAND RESAW...

  • Page 10: Machine Specifications

    MACHINE SPECIFICATIONS HR250 SPECIFICATIONS HR250 Super Power Options Two 15kW (20HP) Motor, 230V Part #: HR250SEA20 Two 15kW (20HP) Motor, 380V 50Hz Part #: HR250SEH20 Two 18.5kW (25HP) Motor, 460V/60Hz Part #: HR250SEC20 HR250 Manual Power Options Two 15kW (20HP) Motor, 230V...
  • Page 11 MACHINE SPECIFICATIONS Noise Level = 87dB(A) The noise level measurement was taken in accordance with PN-EN ISO 3746 Standard . The noise exposure level given above concerns an 8-hour work day. Value for associated uncertainty K=4dB. The figures quoted are emission levels and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further precautions are required.

  • Page 12: Lifting The Machine

    LIFTING THE MACHINE SAWDUST EXTRACTOR SPECIFICATION Maximum Capacity: 1200m Collector Inlet Diameters (in front of fan): 145 mm Electric Motor Horsepower: 1,5 kW Number of Sacks for Waste 2 pc Total Capacity of Sacks 0.25 m Pressure drop 1,5 kPa (0.22 psi) Weight 110 kg Conveying Speed When 10 m Long...
  • Page 13 This machine should be lifted or moved only by using a forklift. Make sure the loading capacity of the forklift is enough to lift the machine. The weight of HR250 is shown as below: Net weight: 1630 kgs (3594 lbs.) Gross weight: 1730 kgs (3814 lbs.) Lifting a packed machine and unpacked machine is shown below.

  • Page 14: Unpacking And Checking Contents

    UNPACKING AND CHECKING CONTENTS The twin head horizontal band resaw is shipped in one wooden crate. Carefully unpack the machine to avoid damage to the machine. Check the machine to see if all parts are present and free of damage. If any parts are missing or damaged, contact your local distributor or the machine manufacturer immediately.

  • Page 15: Cleaning The Machine

    CLEANING THE MACHINE Before shipment, the machine is coated with a rust-preventive oil to prevent rusting during transportation. Once you receive and unpack the machine, thoroughly remove rust preventive oil. To do this, use a clean cloth soaked in kerosene for removing the rust preventive oil. CAUTION Do not use lacquer thinners or any volatile solvents, because they can damage the...

  • Page 16: Installing Machine

    • A concrete foundation and anchored bolts are recommended. • When your HR250 resaw is used indoors, it must be operated with a sawdust exhaust system connected. • The HR250 resaw must not be used outdoors when it is raining/snowing.

  • Page 17: Legend Of The Machine (Front View)

    LEGEND OF THE MACHINE (FRONT VIEW) 1. Feed conveyor 2. Air cylinder for infeed pressure roller 3. Lifting channels for forklift 4. Front door 5. Dust outlet for lower sawblade (ø6”) 6. Lower saw wheel drive motor (20HP) 7. Dust outlet for upper sawblade (ø6”) 8.

  • Page 18: Legend Of The Machine (Back View)

    LEGEND OF THE MACHINE (BACK VIEW) 1. Lower saw wheel drive motor (20HP) 2. Filter/regulator/lubricator combination unit 3. Air/hydraulic combination unit for sawblade tension 4. Emergency stop switch 5. Conveyor belt drive motor (20HP) 6. Gear reducer 7. Oil box for oil mist cooler 8.

  • Page 19: Control Panel

    CONTROL PANEL 1. KEY SWITCH- MAINTENANCE/ RUN 2. EMERGENCY STOP SWITCH 3. POWER ON CONTROL PANEL SWITCH 4. CONVEYOR BELT SPEED REGULATOR 5. SAWBLADE TENSION SWITCH 6. AIR PRESSURE WARNING LIGHT 7. CONVEYOR BELT STOP SWITCH 8. CONVEYOR BELT START SWITCH 9.
  • Page 20 CONTROL PANEL 12. LOWER SAW WHEEL RAISING SWITCH 13. DIGITAL CONTROLLER FOR LOWER SAW WHEEL ELEVATION 14. DIGITAL CONTROLLER FOR UPPER SAW WHEEL ELEVATION 15. UPPER SAW WHEEL LOWERING SWITCH 16. UPPER SAW WHEEL RAISING SWITCH UPPER SAW WHEEL START SWITCH UPPER SAW WHEEL STOP SWITCH MAGNETIC BRAKE CONTROL SWITCH...
  • Page 21 CONTROL PANEL 1. KEY SWITCH- MAINTENANCE/ RUN (1) Turn the Key Switch to the left (Maintenance), this activates the switch to tension or release tension on the blades. NOTE Please Note when in Maintenance mode the machine is unable to start, only the tensioning of the blades and the magnetic brake switch are active.
  • Page 22 CONTROL PANEL 3. EMERGENCY STOP SWITCH (1) During operation, if any abnormal motion or emergency condition occurs, the operator should press the “EMERGENCY STOP SWITCH. Then all driven motions of the " machine will stop. (2) Before restarting the machine, you need to turn the “EMERGENCY STOP SWITCH"...
  • Page 23 CONTROL PANEL 5. SAWBLADE TENSION SWITCH The Key Switch (1) must be turned to Maintenance for the sawblade tension switch to activate (1) Turn this switch to the Left for loosening sawblade tension. (2) Turn this switch to the Right for tightening sawblade tension 6.
  • Page 24 CONTROL PANEL 7. CONVEYOR BELT STOP SWITCH (1) Press this switch to stop the conveyor belt running. 8. CONVEYOR BELT START SWITCH (1) Press this switch to start the conveyor belt running. 9. LOWER SAW WHEEL STOP SWITCH (1) Press this switch for stopping the lower saw wheels running.
  • Page 25 CONTROL PANEL LOWER SAW WHEEL START SWITCH (1) Press this switch for starting the lower saw wheel running. (2) This switch is effective only when the Key Switch (1) has been turned to the run position and there is enough air pressure. (3) Operating pressure of 5-7 Bar required.
  • Page 26 CONTROL PANEL DIGITAL CONTROLLER FOR LOWER SAW WHEEL ELEVATION (1) This digital controller indicates the lower saw wheel elevation and providing quick setting of thickness of cut. DIGITAL CONTROLLER FOR UPPER SAW WHEEL ELEVATION (1) This digital controller indicates the upper saw wheel elevation and providing quick setting of thickness of cut.
  • Page 27 CONTROL PANEL 16. UPPER SAW WHEEL RAISING SWITCH (1) Press this switch, then the upper saw wheels will raise. (2) The raising distance is displayed on the digital controller (14). (3) This switch is a jog switch. When pressing on this switch, the upper saw wheel will raise.
  • Page 28 CONTROL PANEL 19. MAGNETIC BRAKE CONTROL SWITCH This switch is for releasing the magnetic brake in order to track and align blades. (2) This switch is effective only when the Key Switch (1) has been turned to the maintenance position.
  • Page 29 CONTROL PANEL (MODEL CH-525) 1) FIGURE BUTTONS ARE FROM 0 TO 9. 2) BUTTON C IS FOR CLEAR. 3) (.) BUTTON FOR SETTING THE DIGITS AT RIGHT SIDE OF THE DECIMAL POINT. 4) SET IS A BUTTON FOR SETTING DATA. 5) UNIT IS A BUTTON FOR TRANSITING DIMENSION UNITS.
  • Page 30 CONTROL PANEL 6) (–) FOR MANUAL OPERATION TO DEDUCT THE FIGURE. 7) (+) FOR MANUAL OPERATION TO INCREASE THE FIGURE. 8) ‘’START’’ IS A BUTTON TO START. 9) ‘’STOP’’ IS A BUTTON TO STOP AND STOP ALL OPERATIONS MEANWHILE. OPERATING INSTRUCTION FOR CORRECTING DATA In accordance with the dimension of the actual material, press “SET”...
  • Page 31 CONTROL PANEL STEP 2: Press ‘’1’’ button followed by pressing ‘’0’’ button twice. STEP 3: Press ‘’SET’’ button and hold for 2-3 seconds. Figure 100.0 will be displayed. Correcting the data is complete. DIMENSION UNIT SELECTING & DESCRIPTION OF CHANGE The user can choose between INCH and MM in accordance with their common use.
  • Page 32 CONTROL PANEL STEP 2: Once you have pushed the ‘’UNIT’’ button the size will automatically change accordingly. DESCRIPTION OF AUTOMATIC START OPERATING If the figure shown on this control unit is 100.0 and we need to increase it to 200.0 press “SET” button first.
  • Page 33 CONTROL PANEL STEP 1: Press ‘’SET’’ button. Display will show 0. STEP 2: Press ‘’2’’ button, followed by pressing ‘’0’’ button twice. Display will show 200. STEP 3: Press ‘’START’’ button. The control unit starts to run and the figure on the display changes Back to 100 and begins to increase until it reaches the set size.
  • Page 34 CONTROL PANEL Problem Search for Failure Correction The display fails to show Check if the electric pressure Re-input correct electric figures. of the power 220V or AC110V pressure. is normal. Check if the fuse is burnt out Replace with a new 1A fuse. and fused to be broken.
  • Page 35 CONTROL PANEL Travel dimension is incorrect. If the correction is made at The parameter of the control 30MM, but the dimension at unit isn’t complied with the 150MM isn’t complied with table, correct the parameter. scale, but back to 30MM, the dimension is complied with the scale.
  • Page 36 LAYOUT OF VARIOUS LIMIT SWITCHES Limit switch for min. distance between sawblades LIMIT SWITCH FOR MIN. DISTANCE BETWEEN SAWBLADES 1. This limit switch is located at the right side of the machine back, which is used to control the minimum distance between the upper and the lower sawblades.

  • Page 37: Layout Of Various Limit Switches

    LAYOUT OF VARIOUS LIMIT SWITCHES Limit switch for lower saw wheel position for blade loosening Top limit switch for lower saw wheel. Bottom limit switch for lower saw wheel. These 3 limit switches are provided at the right side of the machine back.
  • Page 38 LAYOUT OF VARIOUS LIMIT SWITCHES Top limit switch for upper saw wheels Limit switch for lower saw wheel position for blade loosening Top limit switch for lower saw wheel. Bottom limit switch for lower saw wheel.

  • Page 39: Connecting Power Wires

    CONNECTING POWER WIRES CAUTION It is recommended that a 30mA Ground Fault Interrupter (GFI) be used. 1. Before connecting the power wires of the machine to your factory’s power source, make sure the voltage, Hz and phase of the machine are same as that of your factory’s power source.

  • Page 40: Checking Power Wire Connection

    CONNECTING POWER WIRES ELECTRICAL CABINET...

  • Page 41: Electric Wiring Diagram

    ELECTRIC WIRING DIAGRAM Under revision...
  • Page 42 ELECTRIC WIRING DIAGRAM...
  • Page 43 ELECTRIC WIRING DIAGRAM...

  • Page 44: Connecting The Dust Hood Outlet

    CONNECTING THE DUST HOOD OUTLET 1. This machine is equipped with three dust hood outlets. Two are located at the right side of the machine, and one is located at the left side. 2. Diameters of all dust hood outlets are all 6". 3.

  • Page 45: Connecting The Air Circuit

    CONNECTING THE AIR CIRCUIT 1. The quick air connector is provided on the filter/regulator/lubricator combination unit (F.R.L. Unit). 2. You need to connect the quick air connector to an air source. 3. The size of the quick air connector is 3/8”. 4.

  • Page 46: Filter/Regulator/Lubricator Unit

    FILTER/REGULATOR/LUBRICATOR UNIT 1. PRESSURE GAUGE. The pressure for the air system is indicated on the pressure gauge. Working air pressure can be adjusted by turning the pressure regulation knob located on the filter cup. Turn it clockwise for increasing pressure. Turn counter-clockwise for decreasing pressure.

  • Page 47: Oil Mist Cooler

    OIL MIST COOLER 1. This machine is equipped with an oil mist cooler for cooling the upper and the lower sawblades. In addition, the cooler can also remove dusts deposited on the sawblade. 2. The oil mist cooler requires air and oil to operate. 3.

  • Page 48: Adjusting Oil Mist Flow Rate

    ADJUSTING OIL MIST FLOW RATE Nozzle Flow Rate Regulator Upper Sawblade Lower Nozzle Sawblade Flow Rate Regulator 1. Open the front doors before adjusting oil mist flow rate. DANGER Make sure the saw wheels have come to a complete stop before opening the front doors Left Door Right Door...

  • Page 49: Inspecting And Adjusting Sawblade Tension

    INSPECTING AND ADJUSTING SAWBLADE TENSION When installing a new sawblade, it is necessary to inspect and adjust the sawblade tension. In addition, after the machine has operated for a long period, the sawblade tension may become loose gradually. At this time, it is also necessary to inspect and adjust the sawblade tension.
  • Page 50 INSPECTING AND ADJUSTING SAWBLADE TENSION 2. Fit the sawblade tension gauge onto the sawblade. Make sure the two slot bottoms on the sawblade tension gauge have touched the back side of the sawblade. Sawblade Tension Gauge Slot Bottom Left Slot Right Slot 3.
  • Page 51 INSPECTING AND ADJUSTING SAWBLADE TENSION 5. Tighten the right fix screw on the sawblade tension gauge. Left Fix Screw Right Fix Screw Turn the gauge to set it at graduation "0." Set at graduation "0" 7. Turn the sawblade tension switch (5), located on the operation panel, to the Right position (tighten) for tightening the sawblade.
  • Page 52 INSPECTING AND ADJUSTING SAWBLADE TENSION 9. If adjusting blade tension is required, turn the air pressure regulator on the air hydraulic combination unit, located at the back side of the machine. Air Pressure Regulator Air Pressure Gauge Air Hydraulic Combination Unit. 10.

  • Page 53: Adjusting Sawblade Track (Forward/Backward Direction)

    ADJUSTING SAWBLADE TRACK (FORWARD/BACKWARD DIRECTION) 1. Turn power off before conducting sawblade tracking adjustment. 2. Open the saw wheel guard (front doors). 3. Make sure the sawblade tension is proper before adjusting sawblade tracking. 4. Slowly turn the saw wheel by hand, and check the sawblade running track condition.
  • Page 54 ADJUSTING SAWBLADE TRACK (FORWARD/BACKWARD DIRECTION) 6. Turn the blade track adjustment screw 1/4 turn counter-clockwise for moving the sawblade forward. Turn the screw1/4 turn clockwise for moving the sawblade backward. 7. After blade track is adjusted, tighten the fixing nut (1). 8.

  • Page 55: Adjusting Sawblade Track (Rightward/ Leftward Direction)

    ADJUSTING SAWBLADE TRACK (RIGHTWARD/ LEFTWARD DIRECTION) 1. Turn power off before conducting sawblade tracking adjustment. 2. Open the saw wheel guard (front doors). 3. Make sure the sawblade tension is so proper before adjusting sawblade tracking. 4. Slowly turn the saw wheel by hand, and check the sawblade running track condition.
  • Page 56 ADJUSTING SAWBLADE TRACK (RIGHTWARD/ LEFTWARD DIRECTION) 6. Turn the blade track adjustment screw 1/4 turn counter-clockwise for moving the sawblade leftward. Turn the screw 1/4 turn clockwise for moving the sawblade rightward. 7. After blade track is adjusted, tighten the fixing nut (2). 8.

  • Page 57: Adjusting Conveyor Belt Tracking

    ADJUSTING CONVEYOR BELT TRACKING 1. If the conveyor belt runs to either right or left side, you need to adjust the conveyor belt running track. 2. Before adjusting the conveyor belt tracking, make sure the conveyor belt tension is tightened. Otherwise, you should adjust belt tension before adjusting its running track.

  • Page 58: Adjusting The Loading Pressure Of Infeed Pressure Roller

    ADJUSTING THE LOADING PRESSURE OF INFEED PRESSURE ROLLER The loading (hold-down) pressure and raising sensitivity of the indeed pressure roller can be adjusted by turning the two air flow regulators, provided on the air cylinder located at the infeed end. The “UPPER AIR FLOW REGULATOR “is used to adjust the hold- down pressure of the infeed pressure roller.

  • Page 59: Convenient Wood Infeed

    CONVENIENT WOOD INFEED The infeed roller assembly is equipped with a sensing plate. Once the wood touches the sensing plate, the infeed roller assembly will raise slowly. This allows the wood to be pressed by the infeed roller easily without blocking problems. INFEED ROLLER ASSEMBLY SENSING...

  • Page 60: Maintenance

    MAINTENANCE Proper maintenance is important to keep the machine in the best condition. Note that a small problem may lead to poor machine performance or even cause a serious damage. Therefore, the operator and maintenance personnel should not neglect the maintenance work. CAUTION Disconnect air supply and release compressed air from the air system before servicing...
  • Page 61 MAINTENANCE 2. DAILY MAINTENANCE (1) Every day before starting the machine, check all lubrication positions of the machine. (2) Every day when the work is finished, clean the machine. Remove wood chips from the machine and surroundings. Apply oil on the sliding parts.
  • Page 62 MAINTENANCE 3. WEEKLY MAINTENANCE (1) Clean the filter screen and fan in the electrical cabinet. (2) Clean the entire machine and the working area. (3) Check if any switch or push-button has loosened or not. If loosened, tighten securely. (4) Check if warning devices and proximity sensors work normally on not. (5) Open wheel Hubs on Saw Wheel and tighten Bearing retaining nut by one notch, this ensures the bearings are preloaded.
  • Page 63 MAINTENANCE Safety devices on the HR250 resaw which must be checked before every shift: • E-STOP button and its circuit inspection • Up/down limit switches • Blade cover safety switch and its circuit inspection. E-STOP button and its circuit inspection Turn on the blade motor.

  • Page 64: Trouble Shooting

    TROUBLE SHOOTING PROBLEM PROBABLE CAUSES CORRECTION 1. Sharpen or 1.Sawblade is dulled replace sawblade SAWBLADE SLOW 2. Motor overload DOWN DURING uce cutting speed CUTTING 3. Sawblade tension is too loose 3. Tighten sawblade Too tight tension of Adjust sawblade tension SAWBLADE BREAK sawblade properly...

  • Page 65: Hydraulic Schematic

    HYDRAULIC SCHEMATIC...

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