American 12 Operator's Manual 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.
Contents of this Book Operator Safety Instructions ......................................................... 3 Introduction and Machine Specifications ....................................... 5 230V Electrical Connection Instructions ........................................ 6 How to Transport the Machine ...................................................... 7 Machine Set-Up ........................................................................... 8 How to Operate the Machine .............................
OPERATOR SAFETY INSTRUCTIONS WARNING AVERTISSEMENT ADVERTENCIA DANGER means: Severe bodily injury or death can occur to you or other personnel if the DANGER 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.
Page DANGER: Electrocution could occur if the machine is used on a power circuit that repeatedly trips or is undersized. Have a licensed electrician check the fuse, circuit breaker or power supply. DANGER: Electrocution could occur if maintenance and repairs are performed on a unit that is not properly disconnected from the power source. Disconnect the power supply before attempting any maintenance or service. DANGER: Electrocution could occur if machine is used on ungrounded electrical circuit.
Operating Controls Introduction and Machine Specifications Operating Controls Motor Starter / Protector Sanding Pressure Adjustment Tool Storage Tray Leveling Adjustment PART NUMBER 07044C Abrasive Size Contact Wheel Speed Abrasive Speed Dust Fan Speed Dust Fan Flow Motor Leveling Control Operating Control Motor Starter/Protector Sanding Pressure Adjustment Wheels (Front) Wheel (Adjustment) Drive Dimensions Weight 12 x 261/8 (30.5cmx67.3cm) paperback 2000/2400 rpm (revolutions per min.
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. This machine must be connected to an electrically ground circuit in order to protect the operator from electric shock.
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. To transport the machine, follow this procedure: 1. Make sure the power cable is disconnected from the electrical outlet. 2. Disconnect the handle plug connection. See figure 1. 3. Remove the belt cover. 4. Remove the fan belt. Figure 1 5. Loosen the motor bolt. Using the ¾" wrench, turn the motor bolt counterclockwise. See figure 2. 6.
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. 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 electrical hazard. 3.
8. Put the smooth side of the abrasive against the sanding drum. 9. Put one end of the abrasive against the sanding drum slot (1). See figure 3. 10. Turn the drum one revolution. Put the other end of the abrasive in the drum slot (2). See figure 3. 11. Tighten the abrasive. To tighten the abrasive, follow this procedure: 1. The end wrenches are given with the machine. Put a wrench around the nut at each end of the durm (1). See figure 4. Figure 3 2.
How to Operate the Machine Page 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 explosive environment when certain combustible materials are in the atmosphere, i.e.
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 5. 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 opposite side of the handle and hold it in place with your hand.
A. First pass forward, right to left. B. First pass reverse, retrace same path. C. Second pass forward, overlap ½ the drum width. D. Second pass reverse, retrace second path forward, etc....for the entire room E. Work the remaining unsanded floor in the same fashion, right to left.
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 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.
Sander Adjustment Procedures DANGER: Electrocution could occur if maintenance and repairs are performed on a unit that is not properly disconnected from the power source. Disconnect the power supply before attempting any maintenance or service. DANGER: Moving parts of this machine can cause serious injury and/or damage. Keep hands, feet and loose clothing away from all moving parts of the sander. Sanding Pressure To adjust the sanding pressure follow this procedure: 1.
Leveling If the sanding drum is out of adjustment, follow this procedure: 1. Remove the belt cover. 2. Loosen the eccentric lock screw. Using the 7/16" wrench, turn the eccentric lock screw (1) counterclockwise. See figure 7. 3. To raise or lower the drum, turn the eccentric (2). See figure 7. 4. Tighten the eccentric lock screw. To tighten the eccentric lock screw, turn the screw clockwise. 5. Install the belt cover.
Routine Maintenance The following items need to be periodically inspected and maintained to keep your sander in good working condition. Wheels Periodically remove the debris from the truck and caster wheels. Debris can cause waves on a sanded surface. Lubricate truck mechanism every 25 hours of use. The machine is equipped with lubrication fittings and are located on shaft supporting mechanism.
Troubleshooting PROBLEM Drive belts slip. ACTION CAUSE Insufficient tension. Worn belts. Tension drive belt. (Squeaking or squealing sound) Replace belts. Squealing, growling or grinding noise coming from machine. Damaged and/or worn bearing. Remove drive belts, rotate arbor motor, fan, shafts and idler pulley to locate dragging or rough bearing. Contact an authorized American Sanders Technology dealer. Dust pick-up is poor. Dust bag is over 1/3 full. Dust bag is dirty. Dust chute is obstructed.
NOTES Page 18 AMERICAN SANDERS TECHNOLOGY - American 12 Floor Sander Owner's Manual
AMERICAN SANDERS TECHNOLOGY American Sander 12 Wiring Diagram 4/93 AMERICAN SANDERS TECHNOLOGY -American 12 Floor Sander Operator's Manual Page 19
AMERICAN SANDERS TECHNOLOGY Model American 12 Floor Sander Drawing #1 Handle Assembly 10/00 2 46 1 5 4 3 7 6 8 9 27 10 26 11 13 25 12 24 21 15 16 17 22 15 18 12 23 28 45 21 10 44 29 20 19 32 30 31 43 33 36 35 32 34 37 42 41 34 38 31 39 40 Page 20 AMERICAN SANDERS TECHNOLOGY - American 12 Floor Sander Owner's Manual
AMERICAN SANDERS TECHNOLOGY Model American 12 Floor Sander Parts List #1 Handle Asembly 10/00 Ref No. Part No 1 2w 3 4 5 6 7 8 9w 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29w 30 31 32 33 w 34 35 w 36 37 38 w 39 40 41 42 43 44 45 46 Ref.
AMERICAN SANDERS TECHNOLOGY Model American 12 Floor Sander Drawing #2 10/00 87 89 88 7 90 92 93 91 94 1 5 4 95 96 58 97 6 99 8 12 10 13 100 2 3 16 14 15 11 98 9 20 17 101 102 19 22 21 23 20 27 24 33 32 28 18 30 31 29 86 34 36 37 38 39 40 41 45 42 47 44 51 46 25 62 70 26 71 73 43 61 63 72 76 75 85 5354 83 49 103 49 50 55 56 40 59 17 9 60 31 30 44 64 71 74 77 78 84 48 52 80 79 40 39 67 68 69 81 82 Page 22 AMERICAN SANDERS TECHNOLOGY - America
AMERICAN SANDERS TECHNOLOGY Model American 12 Floor Sander Parts List #2 10/00 Ref # 1 2 3 4 5 6 Part No.
AMERICAN SANDERS TECHNOLOGY American 12 Floor Sander Assembly Drawing #3 6/01 1 2 3 4 5 8 32 13 14 11 12 15 16 22 17 23 24 25 43 29 44 46 47 53 21 26 41 27 30 28 40 30 31 34 8 45 35 14 48 49 52 50 51 16 19 20 36 41 15 42 18 39 58 55 9 38 56 10 9 57 55 10 54 37 39 56 59 57 37 54 Optional Urethane Wheels 55 9 37 62 10 61 60 37 33 56 Page 24 AMERICAN SANDERS TECHNOLOGY - American 12 Floor Sander Owner's Manual
070 07048C 49 071 C 0 071 8A 09A AMERICAN SANDERS TECHNOLOGY American 12 Floor Sander Assembly Parts List #3 6/01 Ref. No Part No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33u 34 35 36 37u 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 u 56 u NOTE: u indicates a change has been made since the last publication of this manual. 57 58 59 60u 61u 62u 88502A 25200C 67309A 87000A 67907A 67315A 66123A 67109A 920196 87101A 67906A Ref.
AMERICAN SANDERS TECHNOLOGY American 12 Floor Sander Accessories Drawing & Parts List #4 10/00 1 2 3 5 6 7 8 9 10 RefRef. # 1 2 3 5 6 7 8 9 10 Page 26 Part No.
Chatter - Wave Prevention American Sanders Technology Sanders are designed and manufactured to the most rigid tolerances. However, after a finishing cut it is possible to see “chatter” or “waves”. The best guarantee to remove the chatter is to finish the floor with a rotating horizontal sander, such as American Sanders Technology’s Sander 16. To minimize chatter when using a belt or drum sander the following steps should be taken: 1) DRUM PAPER...insure the paper is secured in the slot, but not too tight.
Chatter Wave Prevention (cont) 3) UNEVEN WALKING PACE..... can leave lengthy “waves”. The machine cuts more material during the slower pace. Pay particular attention to a steady, even pace. 4) EXCESSIVE LIGHT CUTS.... may reveal high spots on the paper/contact wheel and cause chatter. Take a heavier cut and increase the pace. 5) DEBRIS.... lodged between the paper and the drum will leave chatter. On a belt sander, debris may be adhered to the drum.
ALTO® PRODUCT SUPPORT BRANCHES U. S. A. Locations HEAD OFFICE European Locations PRODUCTION FACILITIES ALTO U.S. Inc., St. Louis, Missouri 16253 Swingley Ridge Road, Suite 200 Chesterfield, Missouri 63017-1725 PRODUCTION FACILITIES ALTO U.S. Inc., Springdale, Arkansas 2100 Highway 265 Springdale, Arkansas 72764 (501) 750-1000 Customer Service - 1-800-253-0367 Technical Service - 1-800-356-7274 ALTO U.S. Inc., Bowling Green, Ohio 43402 1100 Haskins ALTO U.S. Inc., Clearwater, Florida 33765 1500 N.
AMERICAN SANDERS TECHNOLOGY U.S. WARRANTY This American Sanders Technology Industrial/Commercial Product is warranted to be free from defects in materials and workmanship under normal use and service for a period of one year from the date of purchase, when operated and maintained in accordance with American Sanders Technology's Maintenance and Operations Instructions. This warranty is extended only to the original purchaser for use of the product.
