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Classic 8
Operator's
Manual
Belt Sander
READ THIS BOOK
This book has important information for the use and safe operation of this machine. Failure to read
this book prior to operating or attempting any service or maintenance procedure to your ALTO
machine could result in injury to you or to other personnel; damage to the machine or to other property
could occur as well. You must have training in the operation of this machine before using it. If your
operator cannot read English, have this man
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Contents of this Book Operator Safety Instructions ........................................................ 3 Machine Safety Statements ......................................................... 5 Introduction and Machine Specifications .....................................6 230V Electrical Connection Instructions......................................7 How to Transport the Machine.....................................................8 One Person.....................................................
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OPERATOR SAFETY INSTRUCTIONS WARNING AVERTISSEMENT ADVERTENCIA DANGER means: Severe bodily injury or death can occur to you or other personnel if the DAN- GER statements found on this machine or in this Owner's Manual are ignored or are not adhered to. Read and observe all DANGER statements found in this Owner's Manual and on your machine. WARNING means: Injury can occur to you or to other personnel if the WARNING statements found on your machine or in this Owner's Manual are ignored or are not
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DANGER: This machine had rotating and moving elements that can cause serious injury. Follow these precautions: Do not operate this machine unless all guards, doors and covers are secure and in place. Keep hands, feet and loose clothing away from all moving parts. Do not service the machine while in operation. Disconnect the electrical cord before servicing. Do not change or make adjustments to the abrasive while the machine is in operation. WARNING: Any alterations, modifications or mi
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Machine Safety Statements The following safety decals are mounted on the machine as shown. If these or any other machine decal, label or plate should become damaged or illegible, install a new decal in its place. Contact your local autho- rized distributor for new decals. The following information signals potentially dangerous conditions to the operator and/or equipment. Read this manual carefully and familiarize yourself with the machine. Know when these conditions can exist. Locate all sa
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Introduction and Machine Specifications Operating Control Lever Motor Starter / Protector Tension Release Lever Sanding Pressure Adjustment Level Adjustment Nut PART NUMBER 07094C 1 7 ABRASIVE SIZE 29 /2" x 7 /8 " CONTACT WHEEL SPEED 2850 rpm (revolutions per minute) ABRASIVE SPEED 4300 sfm (surface feet per minute) DUST FAN SPEED 6800 rpm (revolutions per minute) DUST FAN FLOW 234 cfm (cubic feet per minute) MOTOR 4 hp 208-230V 60Hz 16A LEVELING CONTROL Externally adjustable OPERATING CONTRO
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230V Electrical Connection Instructions CAUTION: This machine will operate only on AC frequency and on electrical voltage shown on the motor nameplate. Make sure you have the correct frequency and voltage before connecting the power cord to an outlet. The machine has a plug as shown below. Figure #1 This machine must be connected to an electrically ground circuit in order to protect the operator from electric shock. This machine has an approved power cord with three conductors as well as a plu
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How to Transport the Machine WARNING: The machine is heavy. Remove the motor from the machine before transporting. Get help loading the machine and motor. Transporting the Machine - One Person To transport the machine, follow this procedure: 1. Make sure the power cable is disconnected from the electrical outlet. 2. Disconnect the handle pigtail cord connection. (twist and pull) See figure #3. Figure 3 3. Loosen the belt tension T-screw completely. Grasp the belt guard immediately above the
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NOTE: It is not necessary to adjust the fan belt independently during this procedure or during replace- ment. The idler pulley is factory adjusted. 5. Close the belt guard door. 6. Plug the motor pigtail in, twisting to lock. Transporting the Machine - Two People When transporting the machine with two people follow this procedure: 1. One operator places hands under the front of the machine main casting. 2. Person #2 lifts the machine by the handle AMERICAN SANDERS TECHNOLOGY Classic 8 Opera
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Machine Set-Up To set-up your machine follow this procedure: 1. Familiarize yourself with the machine and read all danger, warning and caution statements. Make sure all operators of this machine have read this Owner's Manual. If they cannot read English, have the manual explained fully before allowing anyone to operate the sander. Figure 7 2. Locate the power supply. The receptacle should be compatible with the plug. The receptacle must be grounded and must be fused (30 amp) to avoid an elec
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How to Operate the Machine DANGER: Sanding/finishing wood floors can create an environment that can be explosive. Cigarette lighters, pilot lights and any other source of ignition can create an explosion when active during a sanding session. All sources of ignition should be extinguished or removed entirely if possible from the work area. DANGER: Work areas that are poorly ventilated can create an explo- sive environment when certain combustible materials are in the atmosphere, i.e., solven
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To operate the machine follow this procedure: 1. Install the operator's belt as follows: a. Position the operator's belt around waist. b. Cross the straps at the waist. See figure #11. c. Slide the belt loop end over the handle on the control lever side. Adjust the length as needed. d. Wrap the remaining strap around the oppo- site side of the handle and hold it in place with your hand. WARNING: Should quick release of the ma- chine be necessary, serious op- erator injury could occur if the
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A. First pass forward, right to left. B. First pass reverse, retrace same path. D. Second pass reverse, retrace C. Second pass forward, overlap ½ the drum width. second path forward, etc.....for the entire room. E. Work the remaining unsanded floor in the same fashion, right to left. Figure 12, A - E AMERICAN SANDERS TECHNOLOGY Classic 8 Operator's Manual Page 13
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Sanding Cuts and Sandpaper Initial Cut The purpose of the initial cut is to remove old finish and gross imperfections on the floor surface. The sanding equipment should be adjusted to heavy sanding pressure setting and a coarse abrasive belt should be used. If the surface is severely damaged by deep scratches, pre-existing dwell marks, uneven planks, etc., it may be necessary to sand across or diagonally to the grain to restore evenness to the surface. If these conditions are not present, the
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Sander Adjustment Procedures DANGER: Electrocution could occur if main- tenance and repairs are performed on a unit that is not properly dis- connected from the power source. Disconnect the power supply be- fore attempting any maintenance or service. DANGER: Moving parts of this machine can cause serious injury and/or dam- age. Keep hands, feet and loose clothing away from all moving parts of the sander. The following information provides details on how to adjust different features/controls
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Leveling To adjust the machine leveling follow this procedure: 1. Locate the leveling screw. See figure #15. The leveling screw is located towards the rear of the chassis beneath the sanding pressure knob. 2. Tighten the leveling screw (compress the leveling spring) to sand heavier on the drive belt side. 3. Loosen the leveling screw (relax the leveling spring) to sand heavier on the side opposite the drive belts. Belt Tracking Figure 15 WARNING: Injury to the operator could occur if any machi
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Routine Maintenance The following items need to be periodically inspected and maintained to keep your sander in good working condition. Sanding Chamber Periodically blow out the sanding chamber to prevent large accumulations of debris which could interfere with the performance of the tension roller. Wheels Periodically remove the debris from the truck and caster wheels. Debris can cause waves on a sanded surface. Dust Bag Remove the dust bag from the machine and shake it thoroughly to remove th
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Troubleshooting ACTION PROBLEM CAUSE Drive belts slip. Insufficient tension. Tension drive belt as described in (Squeaking or squealing sound) adjustment procedures. Worn belts. Replace belts. Squealing, growling or grinding Damaged and/or worn bearing. Remove drive belts, rotate arbor noise coming from machine. motor, fan, shafts and idler pulley to locate dragging or rough bearing. Contact an authorized dealer. Dust pick-up is poor. Dust bag is over 1/3 full. Empty contents of bag. Dust bag is
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Troubleshooting ACTION PROBLEM CAUSE Burning or glazing. Dull abrasive. Replace abrasive. Excessive sanding pressure. Decrease sanding pressure setting. Fig. #14, page 13. Too fine of an abrasive. Use coarser abrasive. Slow cutting. Dull abrasive. Replace abrasive. Too fine of an abrasive belt. Use a coarser abrasive belt. Insufficient sanding pressure. Increase sanding pressure setting. Fig. #14, page13. Waves on sanded surface. Debris on wheel. Remove and clean wheels. Flat spot on tire(s).
