WEN 3920 User Manual

Table of contents

Technical data………………………………………………………… 2 General safety rules…………………………………………………… 3 Specific safety rules for the scroll saw……………………………….. 5 Electrical information………………………………………………… 7 Know your scroll saw………………………………………………… 9 Assembly and adjustments…………………………………………… 10 Operation……………………………………………………………... 16 Maintenance………………………………………………………….. 20 Exploded view & parts list...…………………………………………. 21 Warranty……………………………………………………………… 23

Technical data

16" Scroll Saw

Item: 3920 Motor: 120 VAC, 60 Hz, 1.2 A Speed: 400-1600 SPM (no load) Throat depth: 16" Blade: 5" pinned & pin-less Blade stroke: 9/16" Cutting capacity: 2" at 90º Table tilt: 0º to 45º left Overall dimensions: 26-3/8" x 13" x 14-3/8" Weight: 33 lb

General safety rules

Safety is a combination of common sense, staying alert, and knowing how the scroll saw works.

SAVE THESE SAFETY INSTRUCTIONS.

WARNING: To avoid mistakes that could cause serious injury, do not plug in the saw

until the following steps have been read and understood.

1. READ and become familiar with this entire instruction manual. LEARN the tool’s

applications, limitations, and possible hazards.

2. AVOID DANGEROUS CONDITIONS. Do not use power tools in wet or damp areas or

expose them to rain. Keep work areas well-lit.

3. DO NOT use power tools in the presence of flammable liquids or gases.

4. ALWAYS keep your work area clean, uncluttered, and well-lit. DO NOT work on floor

surfaces that are slippery.

5. KEEP BYSTANDERS AT A SAFE DISTANCE from the work area, especially when the

tool is operating. NEVER allow children or pets near the tool.

6. DO NOT FORCE THE TOOL to do a job for which it was not designed.

7. DRESS FOR SAFETY. Do not wear loose clothing, gloves, neckties, or jewelry (rings,

watches, etc.) when operating the tool. Inappropriate clothing and items can get caught in moving parts and draw you in. ALWAYS wear non-slip footwear and tie back long hair.

8. WEAR A FACE MASK OR DUST MASK as the sawing operation produces dust.

WARNING: Dust generated from certain materials can be hazardous to your health. Always operate this tool in a well-ventilated area and provide for proper dust removal. Use dust collection systems whenever possible.

9. ALWAYS remove the power cord plug from the electrical outlet when making adjustments,

changing parts, cleaning or working on the tool.

10. KEEP GUARDS IN PLACE AND IN WORKING ORDER.

11. AVOID ACCIDENTAL START-UPS. Make sure the power switch is in the OFF position

before plugging in the power cord.

12. REMOVE ADJUSTMENT TOOLS. Always make sure all adjustment tools are removed

from the saw before turning it on.

General safety rules (continued)

13. NEVER LEAVE A RUNNING TOOL UNATTENDED. Turn the power switch to OFF. Do

not leave the tool until it has come to a complete stop.

14. NEVER STAND ON A TOOL. Serious injury could result if the tool tips or is accidentally

hit. DO NOT store anything above or near the tool.

15. DO NOT OVERREACH. Keep proper footing and balance at all times. Wear oil-resistant

rubber-soled footwear. Keep the floor clear of oil, scrap, and other debris.

16. MAINTAIN TOOLS PROPERLY. ALWAYS keep tools clean and in good working order.

Follow instructions for lubricating and changing accessories.

17. CHECK FOR DAMAGED PARTS. Check for alignment of moving parts, jamming,

breakage, improper mounting, or any other conditions that may affect the tool¡¯s operation. Any part that is damaged should be properly repaired or replaced before use.

18. MAKE THE WORKSHOP CHILDPROOF. Use padlocks and master switches and

ALWAYS remove starter keys.

19. DO NOT operate the tool if you are under the influence of drugs, alcohol, or medication that

could affect your ability to use the tool properly.

20. USE SAFETY GOGGLES AT ALL TIMES¡ªthat comply with ANSI

Z87.1. Normal safety glasses only have impact resistant lenses and are not designed for safety. Wear a face or dust mask when working in a dusty environment. Use ear protection, such as plugs or muffs, during extended periods of operation.

Specific safety rules for the scroll saw

WARNING: Do not operate the scroll saw until it is assembled, and you have read and

understood the following instructions and the warning labels on the scroll saw.

Before operating

1. Check for proper assembly and proper alignment of moving parts.

2. Understand the function and proper use of the ON/OFF switch.

3. Know the condition of the scroll saw. If any part is missing, bent, or does not operate

properly, replace the component before you use the scroll saw.

4. Determine the type of work you are going to be doing. Properly protect your body including

your eyes, hands, face, and ears.

5. To avoid injury caused by pieces thrown from accessories, use only recommended

accessories designed for this saw. Follow the instructions supplied with the accessory. The use of improper accessories may cause risk of injury.

6. To avoid contact with rotating equipment:

• Do not position your fingers where they could contact the blade if the work piece should

unexpectedly shift or your hand should slip.

• Do not cut a work piece too small to be held safely.

• Do not reach under the scroll saw table when the motor is running.

• Do not wear loose clothing or jewelry. Roll long sleeves above the elbow. Tie back long

hair.

7. To avoid injury from accidental starting of the scroll saw:

• Make sure the switch is OFF and unplug the power cord from the electric outlet before

changing the blade, performing maintenance or making adjustments.

• Make sure the switch is OFF before plugging in the power cord to an electric outlet.

8. To avoid injury from a fire hazard, do not operate the scroll saw near flammable liquids,

vapors or gases.

9. To avoid back injury:

• Obtain help when it is necessary to raise the scroll saw more than 10 inches (25.4 cm). Bend

your knees when lifting the scroll saw.

• Carry the scroll saw by its base. Do not move the scroll saw by pulling on the power cord.

Pulling on the power cord could cause damage to the insulation or the wire connections resulting in electric shock or fire.

Specific safety rules for the scroll saw (continued)

When operating the scroll saw

1. To avoid injury from unexpected scroll saw movement:

• Use the scroll saw on a firm level surface with adequate space for handling and

supporting the work piece.

• Be sure the scroll saw cannot move when operated. Secure the scroll saw to a workbench

or table with wood screws or bolts with washers and nuts.

2. Before moving the scroll saw, unplug the power cord from the electrical outlet.

3. To avoid injury from kickback:

• Hold the work piece firmly against the tabletop.

• Do not feed the work piece too fast while cutting. Only feed the work piece at the rate

the saw will cut.

• Install the blade with the teeth pointing downward.

• Do not start the saw with the work piece pressing against the blade. Slowly feed the

work piece into the moving blade.

• Use caution when cutting round or irregularly shaped work pieces. Round items will roll

and irregularly shaped work pieces can pinch the blade.

4. To avoid injury when operating the scroll saw:

• If you are not thoroughly familiar with the operation of scroll saws, obtain advice from a

qualified person.

• Before starting the saw, make sure the blade tension is correct. Recheck and adjust

tension as needed.

• Make sure the table is locked into position before starting the saw.

• Do not use dull or bent blades.

• When cutting a large work piece, make sure the material is supported at the table height.

• Turn the saw OFF and unplug the power cord if the blade jams in the work piece while

being backed out. This condition is usually caused by sawdust clogging the line you are cutting. If this happens, turn OFF the scroll saw and unplug the power cord. Wedge open the work piece and back out the blade.

Electrical information

Grounding Instructions

IN THE EVENT OF A MALFUNCTION OR BREAKDOWN, grounding provides the path of least resistance for electric current and reduces the risk of electric shock. This tool is equipped with an electric cord that has 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 an electrician.

IMPROPER CONNECTION of the equipment grounding conductor can result in electric shock. The conductor with the green insulation (with or without yellow stripes) is the equipment grounding 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 licensed electrician or service personnel if you do not completely understand the grounding instructions, or if you are not sure if the tool is properly grounded.

USE ONLY THREE-WIRE EXTENSION CORDS that have 3-pronged plugs and outlets that accept the tool's plug as shown in Fig. A. Repair or replace a damaged or worn cord immediately.

CAUTION: In all cases, make certain the outlet in question is properly grounded. If you are not sure if it is, have a licensed electrician check the outlet.

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