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18" x 36" Drum Sander
(Models 31-250, 31-255X)
PART NO. 406-13-651-0021 - 06-19-03
Copyright © 2003 Delta Machinery
To learn more about DELTA MACHINERY
visit our website at: www.deltamachinery.com.
For Parts, Service, Warranty or other Assistance,
1-800-223-7278 (
1-800-463-3582).
please call
In Canada call
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Table of Contents
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Summary of Contents for Delta 31-250
- Page 1 18" x 36" Drum Sander (Models 31-250, 31-255X) PART NO. 406-13-651-0021 - 06-19-03 Copyright © 2003 Delta Machinery To learn more about DELTA MACHINERY visit our website at: www.deltamachinery.com. For Parts, Service, Warranty or other Assistance, 1-800-223-7278 ( 1-800-463-3582). please call...
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Page 2: Safety Guidelines - Definitions
SAFETY GUIDELINES - DEFINITIONS This manual contains information that is important for you to know and understand. This information relates to protect- ing YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the symbols to the right. Please read the manual and pay attention to these sections. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. - Page 3 FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY. FOR YOUR OWN SAFETY, READ THE INSTRUC- TION MANUAL BEFORE MACHINE. Learning the machine’s application, limitations, and specific hazards will greatly minimize the possibility of accidents and injury. USE CERTIFIED SAFETY EQUIPMENT. Eye protection equipment should comply with ANSI Z87.1 standards, hearing equipment should comply with ANSI S3.19 standards, and dust mask...
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Page 4: Additional Safety Rules
ADDITIONAL SAFETY RULES FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY. DO NOT OPERATE THIS TOOL UNTIL it is assembled and installed according to the instructions. OBTAIN ADVICE from your supervisor, instructor, or another qualified person if you are not familiar with the operation of this tool. -
Page 5: Power Connections
A separate electrical circuit should be used for your machines. This circuit should not be less than #12 wire and should be protected with a 20 Amp time lag fuse. If an extension cord is used, use only 3-wire extension cords which have 3- prong grounding type plugs and matching receptacle which will accept the machine’s plug. -
Page 6: Extension Cords
FOREWORD The Delta Model 31-250 / 31-255X is an 18" x 36" drum sander with a two-speed drum. Its single-piece frame and cast- iron table construction provides accuracy, stability, and easy adjustments. This unit can be fitted with an optional outboard shaft that accommodates an accessory pneumatic drum for contour sanding. -
Page 7: Carton Contents
DRUM SANDER PARTS CAUTION TAG CAUTION: Pay close attention to caution tags attached to this machine and follow these instructions precisely. This machine is heavy. Remove the container from around the machine. DO NOT lift it from the container. Carefully unpack all loose items from the shipping container and cut the carton from around the machine. - Page 8 FOR YOUR OWN SAFETY, DO NOT CONNECT THE MACHINE TO THE POWER SOURCE UNTIL THE MACHINE IS COMPLETELY ASSEMBLED AND YOU READ AND UNDERSTAND THE ENTIRE INSTRUCTION MANUAL. ATTACHING LEGS This machine is heavy. Use two or more people when lifting. With the machine on its back, resting on the two wood blocks (not supplied), attach the legs.
- Page 9 ATTACHING AND LEVELING FEED TABLE Remove the front and rear shipping bolts that were installed to stabilize the support plate during transit. These bolts, one shown at (N) Fig. 5, should be removed before attaching table. Use a ½" wrench to hold hex stop post (S) then with another ½"...
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Page 10: Operating Controls And Adjustments
OPERATING CONTROLS AND ADJUSTMENTS STARTING AND STOPPING THE MACHINE 1. The drum motor on/off switch (A) Fig. 12 is located underneath the switch shield (B). To turn the drum “ON”, move switch (A) to the “ON” (up) position. To turn the drum “OFF”, push down on switch shield (B) Fig. - Page 11 RAISING AND LOWERING THE FEED TABLE To raise the feed table, turn the handwheel (A) Fig. 16 counter- clockwise. To lower the feed table, turn hand-wheel, (A) Fig. 16 clockwise. NOTE: Each 1/4 turn of handwheel (A) will increase or decrease the height of the table by 1/64".
- Page 12 Fig. 19A SETTING THE HEIGHT SCALE Run a piece of lumber through the drum sander (Fig. 22) to finish one side of the board. Use a square (A) Fig. 23 to measure the thickness of the lumber. Loosen the screw (B) Fig. 24. Move scale up or down until the cursor shows the exact board thickness that was measured in STEP 2.
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Page 13: Sanding Belt
Use a 9/16” socket with an extension (not supplied). Place it in one of the two holes where the hole plugs were removed. Loosen one hex bolt, then the other to relieve tension on the motor. (One is shown at (D) Fig. 26). Apply upward pressure on the motor (located under the machine) to relieve tension on the belt. -
Page 14: Dust Collection
REMOVING AND REPLACING FEED BELT DISCONNECT MACHINE FROM POWER SOURCE. 1. Disconnect the DC Motor Quick Connect. (see Fig. 10). 2. Use a 1/4" hex wrench to remove the four table mounting screws, lockwashers and flange nuts , two of which are shown at (A) Fig. 32. 3. -
Page 15: Frequently Asked Questions
Stock can be removed more quickly by using a fast speed, but the machine works much harder, and the wood is left with a rougher finish. Slowing the speed will lighten the load of the sander, and make the finish better, but it will increase the sanding time. - Page 16 Then sand them as a group. The sander will accept more than one board at a time if the total width is 16" or less and are the same thickness. Pass the first board. When it reaches the rear pressure roller, start another board on the other side of the table. Depending on the width, several boards can go through the sander at one time.
- Page 17 Use different wood types and different widths. 2.To see how the sander works, measure the thickness of your stock. Set the table height to that thickness and then lower it 1/4 turn. Turn the drum switch "ON" and then turn the table feed belt speed to 50% (indicator line on the knob vertical).
- Page 18 OR WHEN CHANGING ACCESSORIES. The Drum Sander feed table should adjust up or down with 35 in-lbs. of torque or less. If more torque is required, then an adjustment may be needed. If you hear a clicking or knocking noise as you turn the handwheel, the timing belt is most likely jumping teeth and an adjustment will be needed.
- Page 19 from turning and tighten the socket head screw(B) with the 3/16" hex wrench. 4. With the support plate level, try moving the table up and down. 5. If the movement is still tight, go back through this procedure before going to the next step of CHECKING LOCK NUT ADJUSTMENT.
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Page 20: Maintenance
MAKE CERTAIN THE MACHINE IS DISCONNECTED FROM THE POWER SOURCE BEFORE PERFORMING MAINTENANCE PROCEDURES. 1. Periodically clean or vacuum the feed belt. 2. Periodically clean the sawdust from sanding cylinder cavities. 3. Oil all bushings on the feed table rollers and front and rear pressure rollers. 4. - Page 21 NOTES...
- Page 22 NOTES...
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Page 23: Parts, Service Or Warranty Assistance
A complete line of accessories is available from your Delta Supplier, Porter-Cable • Delta Factory Service Centers, and Delta Authorized Service Stations. Please visit our Web Site for the name of your nearest supplier. Since accessories other than those offered by Delta have not been tested with this product, use of such accessories could be hazardous. - Page 24 PORTER-CABLE (CENTROS DE SERVICIO DE PORTER-CABLE Parts and Repair Service for Porter-Cable (Obtenga Refaccion de Partes o Servicio para su Herramienta en los Siguientes Centros de Porter-Cable ARIZONA ILLINOIS Tempe 85282 (Phoenix) Addison 60101 (Chicago) 2400 West Southern Avenue 400 South Rohlwing Rd. Suite 105 Phone: (630) 424-8805 Phone: (602) 437-1200...