Delta 31-390, 31-392 User Manual

6" Edge Sander

(Model 31-390, 391, 392)

PART NO. 406-11-651-0006 - 03-12-02

Copyright © 2002 Delta Machinery

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).

MANUAL INSTRUCTION

GENERAL SAFETY RULES

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)

WARNING: FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY

1.FOR YOUR OWN SAFETY, READ INSTRUCTION MANUAL BEFORE OPERATING THE TOOL. Learn the tool’s application and limitations as well as the specific hazards peculiar to it.

2.KEEP GUARDS IN PLACE and in working order.

3.ALWAYS WEAR EYE PROTECTION. Wear safety glasses. Everyday eyeglasses only have impact resistant lenses; they are not safety glasses. Also use face or dust mask if cutting operation is dusty. These safety glasses must conform to ANSI Z87.1 requirements. NOTE: Approved glasses have Z87 printed or stamped on them.

4.REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and adjusting wrenches

are removed from tool before turning it “on”.

5.KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.

6.DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or wet locations, or expose them to rain. Keep work area well-lighted.

7.KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be kept a safe distance from work area.

8.MAKE WORKSHOP CHILDPROOF – with padlocks, master switches, or by removing starter keys.

9.DON’T FORCE TOOL. It will do the job better and be safer at the rate for which it was designed.

10.USE RIGHT TOOL. Don’t force tool or attachment to do a job for which it was not designed.

11.WEAR PROPER APPAREL. No loose clothing, gloves, neckties, rings, bracelets, or other jewelry to get caught in moving parts. Nonslip footwear is recommended. Wear protective hair covering to contain long hair.

12.SECURE WORK. Use clamps or a vise to hold work when practical. It’s safer than using your hand and frees both hands to operate tool.

13.DON’T OVERREACH. Keep proper footing and balance at all times.

14.MAINTAIN TOOLS IN TOP CONDITION. Keep tools sharp and clean for best and safest performance. Follow instructions for lubricating and changing accessories.

15.DISCONNECT TOOLS before servicing and when changing accessories such as blades, bits, cutters, etc.

16.USE RECOMMENDED ACCESSORIES. The use of accessories and attachments not recommended by Delta may cause hazards or risk of injury to persons.

17.REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is in “OFF” position before plugging in power cord. In the event of a power failure, move switch to the “OFF” position.

18.NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is accidentally contacted.

19.CHECK DAMAGED PARTS. Before further use of the tool, a guard or other part that is damaged should be carefully checked to ensure that it will operate properly and perform its intended function – check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced.

20.DIRECTION OF FEED. Feed work into a blade or cutter against the direction of rotation of the blade or cutter only.

21.NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don’t leave tool until it comes to a complete stop.

22.STAY ALERT, WATCH WHAT YOU ARE DOING, AND USE COMMON SENSE WHEN OPERATING A POWER TOOL. DO NOT USE TOOL WHILE TIRED OR UNDER THE INFLUENCE OF DRUGS, ALCOHOL, OR MEDICATION. A moment of inattention while operating power tools may result in serious personal injury.

23.MAKE SURE TOOL IS DISCONNECTED FROM POWER SUPPLY while motor is being mounted, connected or reconnected.

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.

25. WARNING: 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, such as those dust masks that are specially designed to filter out microscopic particles.

SAVE THESE INSTRUCTIONS.

Refer to them often and use them to instruct others.

2

ADDITIONAL SAFETY RULES FOR

ABRASIVE FINISHING MACHINES

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

1. DO NOT OPERATE THIS MACHINE 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 machine.

3.FOLLOW ALL WIRING CODES and recommended electrical connections.

4.USE THE GUARDS WHENEVER POSSIBLE. Check to see that they are in place, secured, and working correctly.

5.CHECK BELTS for wear and tension. If the belt is damaged or can’t be tensioned properly, replace it.

6.CHECK FOR CORRECT BELT INSTALLATION, and insure that the belt is tracking properly.

machine in a horizontal position.

14.FEED THE WORKPIECE AGAINST THE ROTATION OF THE SANDING SURFACE. Hold the workpiece securely on the table.

15.USE A DUST COLLECTION SYSTEM.

16.CLEAN THE MACHINE AND DUST COLLECTION SYSTEM THOROUGHLY BEFORE AND AFTER SANDING METAL. Combining wood dust and metal filings (or aluminum filings and metal filings) can create a fire hazard. DO NOT sand magnesium. It is highly flammable.

17.FOR DRUM SANDERS, DO NOT SAND WORKPIECES SHORTER THAN 7" or thinner than 1/32".

7.KEEP ARMS, HANDS, AND FINGERS away from 18. PROPERLY SUPPORT LONG OR WIDE

abrasive surfaces.

8.AVOID AWKWARD OPERATIONS AND HAND POSITIONS where a sudden slip could cause a hand to contact the sanding surface.

9.NEVER WEAR GLOVES or hold the workpiece with a rag when sanding.

10.NEVER START THE MACHINE with the workpiece against the sanding surface.

workpieces.

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

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

11.NEVER START THE MACHINE before clearing the 21. ADDITIONAL INFORMATION regarding the safe and

table of all objects (tools, scrap pieces, etc.).

12.MAINTAIN MINIMUM CLEARANCE between the table and the sanding surface.

13.USE A BACKSTOP when using the belt finishing

proper operation of this machine 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.

SAVE THESE INSTRUCTIONS. Refer to them often

and use them to instruct others.

3

POWER CONNECTIONS

A separate electrical circuit should be used for your tools. 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 tool’s plug. Before connecting the motor 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 tool. All line connections should make good contact. Running on low voltage will damage the motor.

WARNING: DO NOT EXPOSE THE TOOL TO RAIN OR OPERATE THE TOOL IN DAMP LOCATIONS.

MOTOR SPECIFICATIONS

Your tool is wired for 230 volt, 60 HZ alternating current. Before connecting the tool to the power source, make sure the switch is in the “OFF” position.

GROUNDING INSTRUCTIONS

WARNING: THIS TOOL MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM ELECTRIC SHOCK.

1. All grounded, cord-connected tools:

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 tool is equipped with an electric cord having an equipment-grounding 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 tool is properly grounded.

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

Repair or replace damaged or worn cord immediately.

2. Grounded, cord-connected tools intended for use on a supply circuit having a nominal rating between 150 - 250 volts, inclusive:

If the tool is intended for use on a circuit that has an outlet that looks like the one illustrated in Fig. A. The tool will have a grounding plug that looks like the plug illustrated in Fig. A. Make sure the tool is connected to an outlet having the same configuration as the plug. No adapter is available or should be used with this tool. If the tool must be re-connected for use on a different type of electric circuit, the re-connection should be made by qualified service personnel; and after re-connection, the tool should comply with all local codes and ordinances.

SINGLE PHASE INSTALLATION 31-390

The motor on your tool is wired for 230 Volt, single phase operation. The power cord is equipped with a plug that has two flat current carrying prongs in tandem and one round or "U" shaped longer ground prong. This is used only with the proper mating 3-conductor grounding type receptacle, as shown in Fig. A.

When the 230 Volt, three prong plug is plugged into a grounded 3-conductor receptacle, as shown in Fig. A, the long ground prong on the plug contacts first, so the tool is properly grounded before electricity reaches it.

THREE PHASE INSTALLATION 31-391

The motor on your tool is to be wired for 230 Volt, three phase operation, a power cord and plug is not supplied with the tool. To bring power to the tool proceed as follows:

1.Remove cover from the starter box.

2.Bring the three phase power cord through the entrance hole in the bottom of starter box and connect the three power leads to terminals Ll, L2 and L3 and the ground wire to one of the terminals on the grounding strip shown in Fig. B.

3.Turn the tool on and off and check if the sanding belt is rotating in the right direction. The sanding belt should turn counterclockwise when looking down on the belt.

4.If the sanding belt is rotating in the wrong direction,

DISCONNECT THE TOOL FROM THE POWER SOURCE and interchange any two of the three leads that are connected to terminals Ll, L2, L3, Fig. B.

5.Replace cover on the starter box.

PERMANENTLY CONNECTED TOOLS:

If the tool is intended to be permanently connected the tool should be connected to a grounded metal permanent wiring system; or to a system having an equipment-grounding conductor.

WARNING: IN ALL CASES, MAKE CERTAIN THE MACHINE IN QUESTION IS PROPERLY GROUNDED. IF YOU ARE NOT SURE HAVE A

QUALIFIED ELECTRICIAN CHECK THE MACHINE.

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GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

BRING POWER LEAD THRU ENTRANCE HOLE IN BOTTOM OF STA RTER

ENCLOSURE

GROUNDING BLADE

IS LONGEST OF THE 3 BLADES

G R O U N D

STRIP

CONNECT THREE POWER LEADS TO TERMINALS

L1 - L2 - L3

AND GREEN LEAD TO THE G R O U N D STRIP

	Fig. A			Fig. B
	EXTENSION CORDS
	31-390 ONLY:
		MINIMUM GAUGE EXTENSION CORD
	Use proper extension cords. Make sure your extension
		RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC TOOLS
	cord is in good condition and is a 3-wire extension cord
		Ampere		Total Length	Gauge of
	which has a 3-prong grounding type plug and matching
		Rating	Volts	of Cord in Feet	Extension Cord
	receptacle which will accept the tool’s plug. When using
		0-6	230	up to 50	18 AWG
	an extension cord, be sure to use one heavy enough to
		0-6	230	50-100	16 AWG
	carry the current of the tool. An undersized cord will
		0-6	230	100-200	16 AWG
	cause a drop in line voltage, resulting in loss of power	0-6	230	200-300	14 AWG
	and overheating. Fig. C, shows the correct gauge to use
		6-10	230	up to 50	18 AWG
	depending on the cord length. If in doubt, use the next
		6-10	230	50-100	16 AWG
	heavier gauge. The smaller the gauge number, the	6-10	230	100-200	14 AWG
	heavier the cord.	6-10	230	200-300	12 AWG
		10-12	230	up to 50	16 AWG
		10-12	230	50-100	16 AWG
		10-12	230	100-200	14 AWG
		10-12	230	200-300	12 AWG
		12-16	230	up to 50	14 AWG
		12-16	230	50-100	12 AWG
		12-16	230	GREATER THAN 100 FEET NOT RECOMMENDED

Fig. C

FUNCTIONAL DESCRIPTION

FOREWORD

Delta Model 31-390 is a large capacity Edge Sander for fast, efficient, straight and bevel edge sanding with the added ability to handle contour sanding jobs. The standard unit includes; motor, stand legs, push-button controls, magnetic starter, transformer, overload protection, laminate coated tables, graphite platens, three sanding drums with 80 grit medium abrasive sleeves and 6" x 132" belt, sealed ball bearing idler pulley, rubber contact motor pulley, belt guard with hinged end caps and instruction manual.

UNPACKING AND CLEANING

Carefully unpack the tool, two legs 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.

Fig. 2, illustrates the basic sander (A) removed from the shipping container. Place the sander (A) on a supporting surface that will hold 375 lbs., such as two saw horses, which will allow safe and efficient assembly of the legs.

A

Fig. 2

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