Wen 3922 Instructional Manual Download

Page: 19 / 24

TROUBLESHOOTING GUIDE

PROBLEM

POSSIBLE CAUSE

SOLUTION

Motor will not start.

1. Machine not plugged in.

1. Plug unit into power source.

2. Incorrect size of extension cord.

2. Choose the proper size and length of

extension cord.

3. Worn carbon brushes.

3. Replace carbon brushes; see p. 18.

4. Blown fuse on main PCB.

4. Replace fuse (T5AL250V, 5mm x

20mm). Contact customer service at

1-800-232-1195 for assistance.

5. Defective power switch, PCB, or

motor.

5. Contact customer service at 1-800-

232-1195.

Variable speed does not work.

1. Defective potentiometer (3920B-

075).

1. Contact customer service at 1-800-

232-1195

2. Defective PCB (3920B-049).

2. Contact customer service at 1-800-

232-1195

Dust collection ineffective.

1. Side panel open.

1. Make sure side panel is closed for

optimum dust collection.

2. Dust collection system not strong

enough.

2. Use a stronger system, or reduce the

length of the dust collection hose.

3. Broken/blocked blower bellows or

line.

3. Contact customer service at 1-800-

232-1195.

Excessive vibration.

1. Machine speed set at a harmonic

frequency of the saw.

1. Adjust speed up or down to see if

issue is resolved.

2. Machine not secured to work sur-

face.

2. Secure machine to work surface.

3. Incorrect blade tension.

3. Adjust blade tension (see p. 13).

4. Hold-down foot not being used.

4. Adjust hold-down foot to slightly

clear workpiece surface when cutting.

5. Loose fastener.

5. Check machine for loose fasteners.

6. Defective bearing.

6. Contact customer service at 1-800-

232-1195.

Blades keep breaking.

1. Blade tension set too high.

1. Reduce blade tension; see p. 13.

2. Incorrect blade size.

2. Use a larger (thicker) blade more

suitable for the job at hand.

3. Incorrect blade tooth pitch.

3. Choose a blade with more or fewer

teeth per inch (TPI); a minimum of 3

teeth should contact workpiece at all

times.

4. Excessive pressure on blade.

4. Reduce pressure on blade. Let the

tool do the work.

Blade drift, or otherwise poor cuts.

1. Excessive pressure on blade.

1. Reduce pressure on blade. Let the

tool do the work.

2. Blade mounted upside-down.

2. Mount blade with teeth pointing

down (towards work table).

Tension mechanism does not work.

Broken tension mechanism spring.

Contact customer service at 1-800-

232-1195.

Summary of Contents for 3922

Page 1: ...o the rules for safe operation warnings and cautions If you use your tool properly and for its intended purpose you will enjoy years of safe reliable service NEED HELP CONTACT US Have product questions Need technical support Please feel free to contact us TECHSUPPORT WENPRODUCTS COM 1 800 232 1195 M F 8AM 5PM CST For replacement parts and the most up to date instruction manuals visit WENPRODUCTS C...

Page 2: ... Electrical Information 7 BEFORE OPERATING 8 Unpacking Packing List 8 Know Your Scroll Saw 9 Assembly Adjustment 10 OPERATION MAINTENANCE 14 Operation 14 Maintenance 18 Troubleshooting Guide 19 Exploded View Parts List 20 Warranty Statement 23 To purchase replacement blades for your tool visit WENPRODUCTS COM 2 ...

Page 3: ...ur tool NOTE The following safety information is not meant to cover all possible conditions and situations that may occur WEN reserves the right to change this product and specifications at any time without prior notice At WEN we are continuously improving our products If you find that your tool does not exactly match this manual please visit wenproducts com for the most up to date manual or conta...

Page 4: ...hock PERSONAL SAFETY 1 Stay alert watch what you are doing and use com mon sense when operating a power tool Do not use a power tool while you are tired or under the influence of drugs alcohol or medication A moment of inatten tion while operating power tools may result in serious personal injury 2 Use personal protective equipment Always wear eye protection Protective equipment such as a respira ...

Page 5: ...cordance with these instructions taking into ac count the working conditions and the work to be per formed Use of the power tool for operations different from those intended could result in a hazardous situa tion 8 Use clamps to secure your workpiece to a stable surface Holding a workpiece by hand or using your body to support it may lead to loss of control 9 KEEP GUARDS IN PLACE and in working or...

Page 6: ...the power cord Pulling on the power cord could cause damage to the insulation or the wire connections resulting in electric shock or fire SCROLL SAW SAFETY 1 To avoid injury from unexpected saw movement Use the scroll saw on a firm level surface with adequate space for handling and supporting the workpiece Be sure the scroll saw cannot move when operated Secure the scroll saw to a workbench or tab...

Page 7: ... 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 1 Examine extension cord before use Make sure your extension cord is properly wired and in go...

Page 8: ...g list below to make sure you have all of the parts and accessories If any part is missing or broken please contact customer service at 1 800 232 1195 M F 8 5 CST or email techsupport wenproducts com Scroll Saw CAUTION Do not lift the saw by the arm that holds the blade The saw will be damaged Lift the saw by the table and back housing WARNING To avoid injury from accidental startups turn switch O...

Page 9: ...our scroll saw The components will be referred to later in the manual for assembly and operation instructions Blade Tension Knob Arm Housing Table Sawdust Blower Back Locking Knob Front Locking Knob Table Bevel Knob Blade Guard Foot Blade Guard Foot Lock Knob Sawdust Collection Port ON OFF Switch Speed Knob Table Insert Motor Base Table Adjustment Screw Upper Blade Holder Lower Blade Holder 9 ...

Page 10: ...e table to prevent movement 6 Tighten the adjusting screw Fig 4 2 under the table until the head of the screw touches the table Tighten the lock nut Fig 4 1 7 Loosen the screw Fig 3 2 holding the bevel scale pointer and position pointer to 0 Tighten the screw 8 Attach the blade guard foot Fig 2 1 so the foot rests flat against the table Tighten the screw Fig 2 2 using a Phillips head screwdriver n...

Page 11: ...el to the table and rests flat above the workpiece 1 To adjust loosen the screw Fig 6 1 tilt the foot Fig 6 2 so it is parallel to the table and tighten the screw 2 Loosen the height adjustment knob Fig 7 1 to raise or lower the foot until it just rests on top of the workpiece Tighten the knob ADJUSTING THE DUST BLOWER For best results the dust blower tube Fig 8 1 should be ad justed to direct air...

Page 12: ...e width can cut circles with smaller diameters NOTE Thinner blades will tend to deflect more when making bevel cuts Teeth per Inch Blade Width Blade Thickness Blade SPM Material Cut 10 to 15 0 11 0 018 500 to 1200 SPM Medium turns on 1 4 to 1 3 4 wood soft metal hardwood 15 to 28 0 055 to 0 11 0 01 to 0 018 800 to 1700 SPM Small turns on 1 8 to 1 1 2 wood soft metal hardwood Fig 10 10 to 15 Feet p...

Page 13: ... side panel and secure it by locking both the front Fig 12 1 and back Fig 12 2 locking knobs 13 This saw uses pinned and pinless blades Pinned blades are thicker for stability and for faster assembly They provide faster cutting on a variety of materials NOTE When installing pinned blades the slot on the blade holder must be slightly wider than the thickness of the blade After the blade is installe...

Page 14: ...cutting wood thicker than one inch guide the wood slowly into the blade and take extra care not to bend or twist the blade while cutting in order to maximize blade life 7 Teeth on scroll saw blades wear out and the blades must be replaced frequently for best cutting results Scroll saw blades generally stay sharp for 1 2 hour to 2 hours of cutting depending on the type of cut wood species etc 8 To ...

Page 15: ...justments FREEHAND CUTTING 1 Lay out desired design or secure design to the workpiece CAUTION Always make sure the blade is not in contact with the workpiece before turning the saw ON 6 Slowly feed the workpiece into the blade while holding the workpiece securely against the table Fig 14 2 Fig 15 2 Raise the blade guard foot Fig 15 1 by loosening the height adjustment knob Fig 15 2 3 Position the ...

Page 16: ... under Freehand cutting INTERIOR CUTTING FRETWORK FIG 17 1 Lay out the design on the workpiece Drill a 1 4 pilot hole in the workpiece 2 Remove the blade See Blade removal and installation on p 13 NOTE If you are not changing blades only remove the blade from the upper blade holder Leave it installed in the lower blade holder If you are changing blades install the new blade in the lower blade hold...

Page 17: ... adjustment knob 7 Remove the workpiece from the blade prior to turning the scroll saw ON CAUTION In order to avoid uncontrollable lifting of the workpiece and reduce blade breakage do not turn the switch on while the workpiece is against the blade 8 Position the workpiece against the straight edge prior to touching the leading edge of the workpiece against the blade 9 Slowly feed the workpiece in...

Page 18: ...sh length is worn down to 3 16 or less Reinstall the old carbon brushes in their original orientation if your brushes are not worn down to 3 16 or less Both carbon brushes should be replaced at the same time 4 Replace the carbon brush cover NOTE New carbon brushes tend to spark for a few minutes during the first use as they wear down WARNING Always turn the switch OFF and unplug the power cord fro...

Page 19: ...ibration 1 Machine speed set at a harmonic frequency of the saw 1 Adjust speed up or down to see if issue is resolved 2 Machine not secured to work sur face 2 Secure machine to work surface 3 Incorrect blade tension 3 Adjust blade tension see p 13 4 Hold down foot not being used 4 Adjust hold down foot to slightly clear workpiece surface when cutting 5 Loose fastener 5 Check machine for loose fast...

Page 20: ... 37 38 39 40 41 42 43 44 13 11 16 20 32 79 12 39 4 1 46 47 50 56 58 60 61 62 63 64 69 70 71 72 73 52 57 59 74 75 32 3 42 5 4 4 7 16 16 48 2 23 18 17 53 68 27 65 66 67 26 25 49 34 31 33 76 81 77 55 54 78 2 88 45 33 2 19 22 82 87 8 a 8 b 4 89 83 84 85 86 51 80 7 7 4 2 2 4 4 2 4 2 3 20 ...

Page 21: ... 2 34 3920B 034 Clamping Board 2 35 3920B 076 Blade 15TPI 1 36 3920B 036 Screw M5x25 1 37 3920B 037 Big Cushion 1 No Model No Description Qty 38 3920B 038 Eccentricity Connector 1 39 3920B 039 Bearing 625Z 80025 2 40 3920B 040 Nut M5 1 41 3920B 041 Clamping Board 1 42 3920B 042 Screw ST4 2x9 5 5 43 3920B 043 Washer 1 44 3920B 044 Screw M5x16 1 45 3922 045 Back Side Panel Lock Knob 1 46 3920B 046 D...

Page 22: ...0 1 78 3920B 078 Screw M5x8 4 79 3920B 033 Screw M4x16 2 80 3920B 080 Foot 3 81 3920C 095 Wrench S3 1 82 3922 082 Spring Washer M8 1 No Model No Description Qty 83 3922 083 Lock Switch 1 84 3922 084 Guide Sleeve 1 85 3922 085 Washer M4 1 86 3922 086 Screw M4X8 1 87 3922 087 Lock Nut M4 1 88 3920B 092 Bolt M8x20 2 89 3920B 093 Bolt M6x80 1 22 ...

Page 23: ...parts and products may need to be sent to WEN before the replacements can be shipped out Upon the confirmation of a WEN representative your product may qualify for repairs and service work When re turning a product for warranty service the shipping charges must be prepaid by the purchaser The product must be shipped in its original container or an equivalent properly packed to withstand the hazard...

Page 24: ...THANKS FOR REMEMBERING V 2019 11 12 ...

Search results

Summary of Contents for 3922

Reviews:

Related manuals for 3922

Brands by name

Popular brands

Wen 3922, Instructional Manual

Search results

Summary of Contents for 3922

Reviews:

Related manuals for 3922

Brands by name

Popular brands