Operating Instructions and Parts Manual 20-inch Disc Sander Model DS20 Three Phase model shown WALTER MEIER (Manufacturing) Inc. 427 New Sanford Road LaVergne, TN 37086 Ph.: 800-274-6848 www.powermatic.com Part No. M-0460226 Revision G 01/2010 Copyright © 2010 Walter Meier (Manufacturing) Inc.
Warranty and Service Walter Meier (Manufacturing) Inc., warrants every product it sells. If one of our tools needs service or repair, one of our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of these Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or perform routine maintenance and major repair on your POWERMATIC® tools.
Table of Contents Warranty and Service..........................................................................................................................2 Table of Contents ...............................................................................................................................3 Warning .............................................................................................................................................4 Introduction .......................................
Warning 1. Read and understand the entire owner’s manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This disc sander is designed and intended for use by properly trained and experienced personnel only.
21. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 22. Maintain a balanced stance at all times so that you do not fall or lean against the disc or other moving parts. Do not overreach or use excessive force to perform any machine operation. 23. Support the workpiece with the miter gauge; maintain control of the workpiece at all times. 24. Use the right tool at the correct speed and feed rate.
Introduction This manual is provided by Walter Meier (Manufacturing) Inc., covering the safe operation and maintenance procedures for a Powermatic Model DS20 Disc Sander. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide years of trouble free operation if used in accordance with instructions set forth in this manual.
Installation Tools required for assembly: 6mm hex key (“Allen wrench”) Exposed metal areas of the Disc Sander have been factory coated with a protectant. This should be removed with a soft cloth dampened with a cleaner/degreaser, or kerosene. Do not use gasoline, acetone or lacquer thinner for this purpose. Do not get solvents near plastic or rubber parts, and do not use an abrasive pad because it may scratch metal surfaces. 1.
Dust Collection The use of a dust collection system with the Disc Sander is strongly recommended. It will maintain shop cleanliness, and help prevent possible health hazards caused by wood dust. Make sure the capacity of the dust collector is suitable for this size machine. Minimum 600 cubic feet per minute is recommended. The Disc Sander has a 4” diameter dust port (Figure 2). Slide the hose of your dust collector over the outlet, and secure with a hose clamp.
The three phase Band Saw may be converted to 460 volt operation. Re-connect the motor leads according to the diagram inside the motor junction box. (Similar diagrams may be found at the back of this manual; however, diagrams on the machine itself should take precedence.) Recommended Gauges (AWG) of Extension Cords Extension Cord Length * It is recommended that the three phase 230V Sander be connected to a grounded and dedicated, minimum 20 amp circuit with a 20 amp circuit breaker or time delay fuse.
Adjustments Table Movement The work table (A, Figure 5) can be tilted 30 degrees forward and 45 degrees backward. 1. Loosen the handle (B, Figure 5) and rotate the handwheel (C, Figure 5) clockwise to tilt table backward, and counterclockwise to tilt table forward. The pointer on the trunnion scale (D, Figure 5) indicates the angle. 2. When table is positioned, re-tighten handle (B, Figure 5). The table can also be raised or lowered on the column: 1.
Miter Gauge The miter gauge is equipped with individually adjustable index stops at 90 degrees and 45 degrees right and left. The index stops can be adjusted by loosening the hex nut (G, Figure 8) and turning the screw (H, Figure 8). Check the accuracy of the 90-degree stop by placing a square against the miter gauge and the disc, as shown in Figure 9. To operate the miter gauge, loosen knob (J, Figure 8) and move the body of the miter gauge (K, Figure 8) to the desired angle.
Forward-Reverse The three phase model of the DS20 has a Forward-Reverse switch (Figure 11). When changing direction with the Forward-Reverse switch, turn the lever to the OFF position and allow the disc to come to a complete stop. (Use the brake for immediate stop). Then turn the lever to the opposite direction, and allow the disc to come up to speed. Brake Pull the brake handle until the pad contacts the rotating disc.
Troubleshooting Trouble Probable Cause Remedy Machine will not start/restart or repeatedly trips circuit breakers or blows fuses. Machine not connected to power source. Verify machine is connected to power. Fuse blown, or circuit breaker tripped. Replace fuse, or reset circuit breaker. Cord damaged. Replace cord. Extension cord too light or too long. Use adequate size extension cord. Building circuit breaker trips or fuse blows. Verify that sander is on a circuit of correct size.
Trouble Probable Cause Remedy Machine vibrates excessively. Sander base not level with floor. Shim if necessary. Not secured to the floor. Use lag screws through holes in base to secure machine to the floor. Improper motor mounting. Check and adjust mounting. Sanding paper too coarse for required finish. Use proper grit. Coarser grits for stock removal, and finer grits for finish work. Workpiece sanded across grain.
Parts List: DS20 Disc Sander Index No. Part No. Description Size Qty 1 .............. 6295560 ..................Base .................................................................................................. 1 2 .............. 6295561 ..................Column .............................................................................................. 1 3 .............. 6295562 ..................Rack ...............................................................................................
Index No. Part No. Description Size Qty 55 ............ 6295615 ..................Phillip Head Screw......................................1/4"-20 x 1/2".................... 4 56 ............ 6295616 ..................Spring Pin ..................................................5 x 20mm ......................... 5 57 ............ 6295617 ..................Pilot, Left............................................................................................ 1 58 ............ 6295618 ..................
Exploded View: DS20 Disc Sander 17
Parts List: Brake Assembly Index No. Part No. Description Size Qty ................ DS20-200 ................Brake Assembly (includes index #1 through 12) ...................................... 1 .............. DS20-201 ................Brake Pad .......................................................................................... 1 2 .............. TS-2311081 ............Hex Nut...........................................................M8 ............................. 1 3 .............. DS20-203 ..
Electrical Connections 19
