Delta 31-250, 31-255X User guide

INSTRUCTION MANUAL

18" x 36" Drum Sander

(Models 31-250, 31-255X)

PART NO. 406-13-651-0021 - 04-03-03

To learn more about DELTA MACHINERY visit our website at: www.deltamachinery.com.

For Parts, Service, Warranty or other Assistance, please call

1-800-223-7278 (In Canada call 1-800-463-3582).

Woodworking can be dangerous if safe and proper operating procedures are not followed. As with all machinery, there are certain hazards involved with the operation of the product. Using the machine with respect and caution will considerably lessen the possibility of personal injury. However, if normal safety precautions are overlooked or ignored, personal injury to the operator may result. Safety equipment such as guards, push sticks, hold-downs, featherboards, goggles, dust masks and hearing protection can reduce your potential for injury. But even the best guard won’t make up for poor judgment, carelessness or inattention. Always use common sense

and exercise caution in the workshop. If a procedure feels dangerous, don’t try it. Figure out an alternative procedure that feels safer. REMEMBER: Your personal safety is your responsibility.

This machine was designed for certain applications only. Delta Machinery strongly recommends that this machine not be modified and/or used for any application other than that for which it was designed. If you have any questions relative to a particular application, DO NOT use the machine until you have first contacted Delta to determine if it can or should be performed on the product.

Technical Service Manager Delta Machinery 4825 Highway 45 North Jackson, TN 38305

(IN CANADA: 505 SOUTHGATE DRIVE, GUELPH, ONTARIO N1H 6M7)

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Used without the safety alert symbol indicates potentially hazardous situation which, if not avoided, may

result in property damage.

This manual contains information that is important for you to know and understand. This information relates to protecting 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.

SAFETY GUIDELINES - DEFINITIONS

SOME DUST CREATED BY POWER SANDING, SAWING, GRINDING, DRILLING, AND OTHER

CONSTRUCTION ACTIVITIES contains chemicals known to cause cancer, birth defects or other reproductive harm.

Some examples of these chemicals are:

· lead from lead-based paints,

· crystalline silica from bricks and cement and other masonry products, and

· arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, always wear MSHA/NIOSH approved, properly fitting face mask or respirator when using such tools.

READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT. Failure to follow all instructions listed below, may result in electric shock, fire, and/or serious personal injury or property damage.

SAVE!

IMPORTANT SAFETY INSTRUCTIONS

VE!

GENERAL SAFETY RULES

1. FOR YOUR OWN SAFETY, READ THE INSTRUCT-

TION MANUAL BEFORE OPERATING THE MACHINE. Learning the machine’s application,

limitations, and specific hazards will greatly minimize the possibility of accidents and injury.

2. 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 protection should comply with MSHA/NIOSH certified respirator standards. Splinters, air-borne debris, and dust can cause irritation, injury, and/or illness.

3. DRESS PROPERLY. Do not wear tie, gloves, or loose clothing. Remove watch, rings, and other jewelry. Roll up your sleeves. Clothing or jewelry caught in moving parts can cause injury.

4. DO NOT USE THE MACHINE IN A DANGEROUS ENVIRONMENT. The use of power tools in damp or wet locations or in rain can cause shock or electrocution. Keep your work area well-lit to prevent tripping or placing arms, hands, and fingers in danger.

5. MAINTAIN ALL TOOLS AND MACHINES IN PEAK CONDITION. Keep tools sharp and clean for best and safest performance. Follow instructions for lubricating and changing accessories. Poorly maintained tools and machines can further damage the tool or machine and/or cause injury.

6. CHECK FOR DAMAGED PARTS. Before using the machine, check for any damaged parts. Check for alignment of moving parts, binding of moving parts, breakage of parts, and any other conditions that may affect its operation. A guard or any other part that is damaged should be properly repaired or replaced. Damaged parts can cause further damage to the machine and/or injury.

7. KEEP THE WORK AREA CLEAN. Cluttered areas and benches invite accidents.

8. KEEP CHILDREN AND VISITORS AWAY. Your shop is a potentially dangerous environment. Children and visitors can be injured.

9. REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure that the switch is in the “OFF” position before plugging in the power cord. In the event of a power failure, move the switch to the “OFF” position. An accidental start-up can cause injury.

10. USE THE GUARDS. Check to see that all guards are in place, secured, and working correctly to prevent injury.

11. REMOVE ADJUSTING KEYS AND WRENCHES BEFORE STARTING THE MACHINE. Tools, scrap pieces, and other debris can be thrown at high speed, causing injury.

12. USE THE RIGHT MACHINE. Don’t force a machine or an attachment to do a job for which it was not designed. Damage to the machine and/or injury may result.

13. USE RECOMMENDED ACCESSORIES. The use of accessories and attachments not recommended by Delta may cause damage to the machine or injury to the user.

14. USE THE PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage, resulting in loss of power and overheating. See the Extension Cord Chart for the correct size depending on the cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

15. SECURE THE WORKPIECE. Use clamps or a vise to

hold the workpiece when practical. Loss of control of a workpiece can cause injury.

16. FEED THE WORKPIECE AGAINST THE DIRECTION

OF THE ROTATION OF THE BLADE, CUTTER, OR ABRASIVE SURFACE. Feeding it from the other

direction will cause the workpiece to be thrown out a high speed.

17. DON’T FORCE THE WORKPIECE ON THE

MACHINE. Damage to the machine and/or injury may result.

18. DON’T OVERREACH. Loss of balance can make

you fall into a working machine, causing injury.

19. NEVER STAND ON THE MACHINE. Injury could occur if

the tool tips, or if you accidentally contact the cutting tool.

20. NEVER LEAVE THE MACHINE RUNNING UNATTEN-

DED. TURN THE POWER OFF. Don’t leave the machine until it comes to a complete stop. A child or visitor could be injured.

21. TURN THE MACHINE “OFF”, AND DISCONNECT THE

MACHINE FROM THE POWER SOURCE before installing or removing accessories, before adjusting or changing set-ups, or when making repairs. An accidental start-up can cause injury.

22. MAKE YOUR WORKSHOP CHILDPROOF WITH

PADLOCKS, MASTER SWITCHES, OR BY REMOVING STARTER KEYS. The accidental

start-up of a machine by a child or visitor could cause injury.

23. STAY ALERT, WATCH WHAT YOU ARE DOING,

AND USE COMMON SENSE. DO NOT USE THE MACHINE WHEN YOU ARE TIRED OR UNDER THE INFLUENCE OF DRUGS, ALCOHOL, OR MEDICATION. A moment of inattention while

operating power tools may result in injury.

24. THE DUST GENERATED by certain woods and

wood products can be injurious to your health. Always operate machinery in well-ventilated areas, and provide for proper dust removal. Use wood dust collection systems whenever possible.

FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY.

ADDITIONAL SAFETY RULES

FOR DRUM SANDERS

SAVE THESE INSTRUCTIONS.

Refer to them often and use them to instruct others.

1. DO NOT OPERATE THIS TOOL UNTIL it is assembled and installed according to the

instructions.

2. OBTAIN ADVICE from your supervisor, instructor, or another qualified person if you are not familiar with the operation of this tool.

3. FOLLOW ALL WIRING CODES and recommended electrical connections.

4. COVER POWER TAKE-OFF SHAFT when not using accessories. Unguarded rotating shafts can create an entanglement hazard which can result in injury.

5. USE A DUST COLLECTION SYSTEM with this tool.

6. CAUTION: THIS MACHINE IS DESIGNED TO SAND WOOD or wood-like products only. Sanding or grinding metal could result in fire, injury, and/or damage to the product.

7. CHECK THE TABLE BELT TRACKING to prevent belt run-off.

8. CHECK BELTS FOR WEAR and for tension.

9. CLEAR THE SANDING AREA and infeed/ outfeed tables of all objects (tools, scrap pieces, etc.) prior to starting tool.

10. DO NOT sand pieces of material that are shorter than 7" in length or thinner than 1/32".

11. SUPPORT ALL SANDING WORKPIECES with a table or additional support at table height. Curved work on an outer sanding drum is the only exception.

12. DRESS PROPERLY. DO NOT WEAR LOOSE

CLOTHING OR JEWELRY. CONTAIN LONG HAIR. KEEP YOUR HAIR, CLOTHING, AND GLOVES AWAY FROM MOVING PARTS. Loose clothes,

jewelry, or long hair can be caught in moving parts.

13. PREVENT THE WORKPIECE FROM CONTACTING THE SANDING BELT before starting the tool.

14. AVOID AWKWARD HAND POSITIONS. A sudden slip could cause a hand to contact the sanding belt.

15. NEVER WEAR GLOVES or hold the work with a rag when sanding.

16. HOLD THE WORK FIRMLY when sanding.

17. SAND with the grain of the wood

18. FEED WORK against the drum rotation.

19. NEVER perform layout, assembly, or set-up work on the tables when the tool is operating.

20. DISCONNECT THE TOOL from the power source before installing or removing accessories, before adjusting or changing set-ups, or when making repairs.

21. DISCONNECT THE TOOL from the power source, and clean the table/work area before leaving the tool. LOCK THE SWITCH IN THE “OFF” POSITION to prevent unauthorized use.

22. ADDITIONAL INFORMATION regarding the safe and proper operation of this tool is available from the Power Tool Institute, 1300 Summer Avenue, Cleveland, OH 44115-2851. Information is also available from the National Safety Council, 1121 Spring Lake Drive, Itasca, IL 60143-3201. Please refer to the American National Standards Institute ANSI 01.1 Safety Requirements for Woodworking Machines and the U.S. Department of Labor OSHA

1910.213 Regulations.

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 3prong grounding type plugs and matching receptacle which will accept the machine’s plug. Before connecting the machine to the power line, make sure the switch is in the “OFF” position and be sure that the electric current is of the same characteristics as indicated on the machine. All line connections should make good contact. Running on low voltage will damage the machine.

DO NOT EXPOSE THE MACHINE TO RAIN OR OPERATE THE MACHINE IN DAMP LOCATIONS.

Fig. A Fig. B

GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

GROUNDING BLADE IS LONGEST OF THE 3 BLADES

GROUNDED OUTLET BOX

GROUNDING

MEANS

ADAPTER

2. Grounded, cord-connected machines intended for use on a supply circuit having a nominal rating less than 150 volts:

If the machine is intended for use on a circuit that has an outlet that looks like the one illustrated in Fig. A, the machine will have a grounding plug that looks like the plug illustrated in Fig. A. A temporary adapter, which looks like the adapter illustrated in Fig. B, may be used to connect this plug to a matching 2-conductor receptacle as shown in Fig. B if a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can be installed by a qualified electrician. The green-colored rigid ear, lug, and the like, extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box. Whenever the adapter is used, it must be held in place with a metal screw.

NOTE: In Canada, the use of a temporary adapter is not permitted by the Canadian Electric Code.

IN ALL CASES, MAKE CERTAIN THE RECEPTACLE IN QUESTION IS PROPERLY GROUNDED. IF YOU ARE NOT SURE HAVE A QUALIFIED ELECTRICIAN CHECK THE RECEPTACLE.

1. All grounded, cord-connected machines: In the event of a malfunction or breakdown, grounding

provides a path of least resistance for electric current to reduce the risk of electric shock. This machine is equipped with an electric cord having an equipmentgrounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Do not modify the plug provided - if it will not fit the outlet, have the proper outlet installed by a qualified electrician.

Improper connection of the equipment-grounding conductor can result in risk of electric shock. The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipmentgrounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal.

Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the machine is properly grounded.

Use only 3-wire extension cords that have 3-prong grounding type plugs and matching 3-conductor receptacles that accept the machine’s plug, as shown in Fig. A.

Repair or replace damaged or worn cord immediately.

POWER CONNECTIONS

MOTOR SPECIFICATIONS

Your machine is wired for 120 volt, 60 HZ alternating current. Before connecting the machine to the power source, make sure the switch is in the “OFF” position.

GROUNDING INSTRUCTIONS

THIS MACHINE MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM ELECTRIC SHOCK.

Use proper extension cords. Make sure your extension cord is in good condition and is a 3-wire extension cord which has a 3-prong grounding type plug and matching receptacle which will accept the machine’s plug. When using an extension cord, be sure to use one heavy enough to carry the current of the machine. An undersized cord will cause a drop in line voltage, resulting in loss of power and overheating. Fig. D, shows the correct gauge to use depending on the cord length. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

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 castiron 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. The 31-250 and 31-255X will provide accurate sanding for wood up to 18" in one pass (36" in two passes).

Fig. D

MINIMUM GAUGE EXTENSION CORD

RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES

Ampere Total Length Gauge of

Rating Volts of Cord in Feet Extension Cord

0-6 120

up to

25 18 AWG 0-6 120 25-50 16 AWG 0-6 120 50-100 16 AWG 0-6 120 100-150 14 AWG

6-10 120

up to

25 18 AWG 6-10 120 25-50 16 AWG 6-10 120 50-100 14 AWG 6-10 120 100-150 12 AWG

10-12 120

up to

25 16 AWG 10-12 120 25-50 16 AWG 10-12 120 50-100 14 AWG 10-12 120 100-150 12 AWG

12-16 120

up to

25 14 AWG 12-16 120 25-50 12 AWG 12-16 120

GREATER THAN 50 FEET NOT RECOMMENDED

FUNCTIONAL DESCRIPTION

UNPACKING AND CLEANING

Carefully unpack the machine and all loose items from the shipping container(s). Remove the protective coating from all unpainted surfaces. This coating may be removed with a soft cloth moistened with kerosene (do not use acetone, gasoline or lacquer thinner for this purpose). After cleaning, cover the unpainted surfaces with a good quality household floor paste wax.

NOTICE: THE MANUAL COVER PHOTO ILLUSTRATES THE CURRENT

PRODUCTION MODEL. ALL OTHER ILLUSTRATIONS ARE REPRESENTATIVE

ONLY AND MAY NOT DEPICT THE ACTUAL COLOR, LABELING OR

ACCESSORIES AND MAY BE INTENDED TO ILLUSTRATE TECHNIQUE ONLY.

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.

CARTON CONTENTS

1. Drum Sander

2. Legs (2) 3 Feed Table

4. Cable tie (in instruction packet)

5. Thickness Scale (in instruction packet)

6. 1/8" T-Handle Hex Wrench(in instruction packet)

7. Table Raising Handwheel

8. 5/16-18 x 1” Socket Head Screws (4)

9. 5/16" Lock-washers (4)

10. 5/16-18 x 5/8” Carriage Head Screws (12)

11. 5/16-18 Flange Nuts (16)

CAUTION:

TAG

CAUTION: