This .pdf document is bookmarked Operating Instructions and Parts Manual 20-inch Disc Sander Model DS20 Three Phase model shown Powermatic 427 New Sanford Road LaVergne, TN 37086 Ph.: 800-274-6848 www.powermatic.com Part No.
Warranty and Service Powermatic warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official Powermatic branded website. • Powermatic products carry a limited warranty which varies in duration based upon the product.
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 Powermatic 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.
Mounting the Brake Assembly Unpacking Attach the brake assembly as shown in Figure 1, using the two socket head cap screws, lock washers, and flat washers which are pre-installed on the machine. Use a 6mm hex key to tighten. Open shipping container and check for shipping damage. Report any damage immediately to your distributor and shipping agent. Do not discard any shipping material until the Disc Sander is installed and running properly.
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.) Grounding Instructions Electrical connections must be made by a qualified electrician in compliance with all relevant codes. This machine must be properly grounded to help prevent electrical shock and possible fatal injury.
On-Off Switch Padlock forward. The pointer on the trunnion scale (D, Figure 6) indicates the angle. The sander is equipped with a push-button switch that will accept a safety padlock (not included). See Figure 5. To safeguard your machine from unauthorized operation and accidental starting by young children, the use of a padlock is highly recommended. 2. When table is positioned, re-tighten handle (B, Figure 6). The table can also be raised or lowered on the column: 1.
Replacing Abrasive Disc The DS20 accepts standard 20” diameter cloth or paper-back sanding discs. We recommend 60 grit for coarse or rough sanding, 80 grit for general purpose medium duty sanding, and 100 grit for fine sanding. 1. Lower the table as far as possible, and push back the guard. See Figure 6. 2. Use a putty knife to remove the old abrasive from the disc. Clean the disc with solvent and allow it to dry. 3. Mount the new sanding paper.
The DS20 Sander requires minimal maintenance. Periodically, make sure the rack and the trunnions on both sides of the table (Figure 13) are lubricated with a good grade, non-hardening grease. Figure 12 (3 Phase model only) Brake Figure 13 Pull the brake handle until the pad contacts the rotating disc. The table surface must be kept clean and free of rust for best results. If rust appears, remove it using a mixture of household ammonia, a good commercial detergent and #000 steel wool.
Troubleshooting Trouble Probable Cause Machine will not start/restart or repeatedly trips circuit breakers or blows fuses. Machine not connected to power source. Fuse blown, or circuit breaker tripped. Cord damaged. Extension cord too light or too long. Building circuit breaker trips or fuse blows. Loose electrical connections. Switch or motor failure (how to distinguish). Motor failure. On/Off switch failure. (or Forward/Reverse switch on 3 phase model). Disc won’t come up to speed.
Trouble Probable Cause Remedy Sanding paper becomes glazed. Sanding painted surface. Wood is wet or gummy. Wrong sanding paper surface. Feed pressure too great. Use open-end grain/flint sanding paper. No cure. Use different stock. Use coarser grit for stock removal. Burn marks on workpiece. Sanding paper burns, or clogs quickly. Workpiece pulled from hand. Sanded edge is not square. Too much pressure, sanding disc biting too deeply into workpiece. No support for workpiece.
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 54 ............. 6295614...................Pilot, Right ................................................... ......................................... 1 55 ............. 6295615...................Phillip Head Screw ...................................... 1/4"-20 x 1/2" .................... 4 56 ............. 6295616...................Spring Pin.................................................... 5 x 20mm.......................... 5 57 ............. 6295617..........
Exploded View: DS20 Disc Sander 16
Parts List: Brake Assembly (DS20 Disc Sander) 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 ..............................
Electrical Connections for DS20 Disc Sander 18
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.powermatic.
