JET J-4210K Operating Instructions and Parts Manual

Operating Instructions and Parts Manual

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Belt and Disc Sanding Machine

Model J-4210

JET

1.0 IMPORTANT SAFETY

INSTRUCTIONS

WARNING – To reduce risk of injury:

- Misuse of this machine can cause serious injury.

- For safety, the machine must be set up, used and serviced properly.

- Read, understand and follow the instructions in the operator’s and parts man ual which w as shipped w ith your machine.

- Never modify the machine without consulting JET.

1.1 General Machinery Warnings

1. Always wear protective eye wear when operating

machinery. Eye wear shall be impact resistant, protective safety glasses with side shields which comply with ANSI Z87.1 spe cificati ons. Use of eye wear which does not comply with ANSI Z87.1 specifications could resu lt in severe injury from the breakage of the eye protection.

2. Wear proper apparel. No loose clothing or jewelry

which can get caught in moving parts. Rubber soled, nonslip, footwear is recommended for best footing.

3. Do not overreach. Failure to maintain a proper

working position can cause you to fall into the machine or cause your clothing to get caught — pulling you into the machine.

4. Keep guards in place and in pr oper w orking order.

Do not operate the machine with the guards removed.

5. Avoid dangerous working environments. Do not

use stationary machine tools in wet or damp locations. Keep work areas clean and well lit.

6. Avoid accidental starts by being sure that the start

switch is in the “OFF” position before plugging in the machine.

7. Never leave the machine running while

unattended. The machine shall be shut off whenever it is not being used.

8. Disconnect the electrical power before servicing,

whenever changing accessories or when general maintenance is done on the machine.

9. Maintain all machine tools with care. Follow all

maintenance instructions for lubricating and the changing of accessories. No attempt shall be made to modify or have makeshift repairs done to the machine. This not only voids the warranty but also renders the machine unsafe.

10. If there is any risk of tipping or sliding, the

machinery must be anchored to the floor.

11. Secure your work. Use clamps or a vise to hold your work, when practical. It is safer than using your hands and it frees both hands to operate the machine.

12. Never brush chips away while the machine is in operation.

13. Keep work area clean. Cluttered areas invite accidents.

14. Remove adjusting keys and wrenches before turning the machine on.

15. Use the right tool. Don’t force a tool or attachment to do a job for which it was not designed.

16. Use only recommended accessories and follow manufacturer’s instructions pertaining to them.

17. Keep hands in sight and clear of all moving parts and cutting surfaces.

18. All visitors should be kept at a safe distance from the work area. Make your workshop completely safe by using padlocks, master switches, or by removing starter keys.

19. Know the tool you are using; its application, limitations, and potential hazards.

20. Do not stand on the tool. Serious injury could occur if the tool is tipped or the cutting tool is unintentionally contacted.

Check damaged parts. Before further use of the

21.

tool, a guard or other part that is damaged should be carefully checked to determine 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.

1.2 General Electrical Cautions

This machine must be gro unded in accordan ce with the National Electrical Code and local codes and ordinances. The work should be done by a qualified electrician. The machine must be grounded to protect the user from electrical shock.

CAUTION: For circuits that are a great distance from the electrical service box, the wire size must be increased in order to deliver ample voltage to the motor. To minimize pow er l os s es a nd to prevent motor overheating and burnout, the use of wire sizes for branch circuits or electrical extension cords according to the following table is recommended:

Conductor

length

240 volt lines 120 volt lines

0-50 feet No. 14 No. 14

50-100 feet No. 14 No. 12

Over 100 feet No. 12 No. 8

AWG (American Wire Gauge)

number

1.3 Safety Requirements for

Abrasive Sanding Machines

Abrasive sanding can be hazardous to operators and bystanders. Sanding sparks, chips and dust particles thrown off by the sanding disc can cause serious injury by contact or inhalation. To avoid injuries you must comply with the following safety requirements:

1. Always wear protective eyewear when operating machinery. Eye wear shall be impact resistant, protective safety glasses with side shields which comply with ANSI Z87.1. Use of eye wear which does not comply with ANSI Z87.1 specifications could result in severe injury from breakage of eye protection.

2. Wear leather safety gloves, arm guards, leather aprons and safety shoes.

3. A dust collection system is recommended, Operator shall also wear a dust mask at all times.

4. Additional precautions may be necessary for sanding materials which are flammable or have other hazardous properties. You should always consult the manufacturer of such materials for instructions on sanding and handling.

5. Do not force or jamb the workpiece into the sanding disc.

6. Before sanding, always allow the motor to come up to operating speed, then check the sanding disc for wobble, runout, or any unbalanced condition. If the disc is not operating accurately and smoothly, immediately stop the motor and make repairs before attempting any sanding operations.

7. Abrasive discs must be stored in a controlled environment area. Relative humidity should be 35% to 50% and the temperature should be between 60 and 80 degrees Farenheit. Failure to do so could cause premature disc failure.

8. Examine the fac e of the sanding disc carefully. Excessive sanding which wears down to the backing material can tearing of the disc. Never use a disc which shows backing, nicks or cuts on the surface or edge or damage due to creasing or poor handling.

9. When installing a new disc, be certain the disc is accurately centered on the drive wheel. Failure to do so could cause a serious unbalanced condition.

10. Always present the workpiece to the wheel while resting the workpiece firmly on the table. Failure to do so could result in damage to the workpiece or throwing of the workpiece off the wheel.

11. Safety shoes which comply with ANSI Z41.1 shall be worn.

12. Personal hearing protection such as ear plugs or ear muffs shall be used to protect against the effect of noise exposure.

WARNING: This product can expose you to chemicals including lead and cadmium which are known to the State of California to cause cancer and birth defects or other reproductive harm, and phthalates which are known to the State of California to cause birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov.

WARNING: Some dust, fumes and gases created by power sanding, sawing, grinding, drilling, welding and other construction activities contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are:

• lead from lead based paint

• crystalline silica from bricks, cement and other masonry products

• arsenic and chromium from chemically treated lumber

Your risk of exposure 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 dust masks that are specifically designed to filter out microscopic particles. For more information go to http://www.p65warnings.ca.gov/ and http://www. p65warnings.ca.gov/wood.

SAVE THESE INSTRUCTIONS

Familiarize yourself with the following safety notices used in this manual:

This means that if precautions are not heeded, it may result in minor injury and/or possible machine damage.

are not heeded, it may result in serious, or possibly even fatal, injury.

This means that if precautions

2.0 Table of contents

Section Page

1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2

1.1 General Machinery Warnings ..................................................................................................................... 2

1.2 General Electrical Cautions ........................................................................................................................ 2

1.3 Safety Requirements for Abrasive Sanding Machines ............................................................................... 3

2.0 Table of contents ............................................................................................................................................ 4

3.0 About this manual .......................................................................................................................................... 5

4.0 About the J-4210 Sander ............................................................................................................................... 5

5.0 Features ......................................................................................................................................................... 5

6.0 Specifications ................................................................................................................................................. 6

7.0 Setup and assembly ....................................................................................................................................... 7

8.0 Electrical connections .................................................................................................................................... 7

8.1 Grounding Instructions ................................................................................................................................ 7

8.2 Voltage conversion ..................................................................................................................................... 8

9.0 Adjustments ................................................................................................................................................... 8

9.1 Adjusting belt tracking ................................................................................................................................ 8

9.2 Platen housing position .............................................................................................................................. 8

9.3 Adjusting sander tables .............................................................................................................................. 8

10.0 Operation ..................................................................................................................................................... 9

10.1 Miter gauge .............................................................................................................................................. 9

10.2 Controls .................................................................................................................................................... 9

11.0 User-maintenance ........................................................................................................................................ 9

11.1 Lubrication ................................................................................................................................................ 9

11.2 Cleaning ................................................................................................................................................... 9

11.3 Replacing sanding belt ............................................................................................................................. 9

11.4 Replacing sanding disc .......................................................................................................................... 10

11.5 Replacing V-belts ................................................................................................................................... 10

11.6 Replacing motor ..................................................................................................................................... 11

11.7 Additional servicing ................................................................................................................................ 11

12.0 Troubleshooting J-4210 Belt-Disc Sander ................................................................................................. 12

13.0 Replacement Parts ..................................................................................................................................... 12

13.1.1 J-4210 Belt & Disc Sander – Exploded View ...................................................................................... 13

13.1.2 J-4210 Belt & Disc Sander – Parts List ............................................................................................... 14

13.2.1 J-4210 Stand – Exploded View ........................................................................................................... 16

13.2.2 J-4210 Stand – Parts List .................................................................................................................... 16

14.0 Electrical Connections for J-4210 .............................................................................................................. 17

15.0 Warranty and service ................................................................................................................................. 18

3.0 About this manual

This manual is provided by JET, covering the safe operation and maintenance procedures for the J-4210 Belt and Disc Sander. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions set forth in this document.

If there are questions or comments, please contact your local supplier or JET. JET c an also be reached at our web site: www.jettools.com.

Retain this manual for future reference. If the machine transfers ownership, the manual should accompany it.

Read and understand the entire contents of this manual before attempting assembly or operation! Failure to comply may cause serious injury!

4.0 About the J-4210 Sander

The JET Model J-4210 Belt and Disc Sanding Machine is ideal for all shops. This versatile m achine can be u sed to grind, sand, finish, and contour all types of parts including metal, wood, plastic, and composite materials. Because of these capabilities, the JET sander eliminates the need for multiple machines to perform the same tasks.

5.0 Features

Figure 1 Figure 2

6.0 Specifications

Model number

Belt/Disc Sander with Stand

Stock numbers

Motor and Electricals

Motor type Totally enclosed, fan cooled Horsepower 1 HP Motor phase single Motor voltage 115/230 V Cycle 60 Hz Full load amperage (FLA) 10 / 5.5 Motor speed 3450 RPM Power transfer v-belt On/off switch Pushbutton with removable safety key Recommended circuit size 1 15 A

Belt sanding

Belt speed Belt size and grit 6 x 48 in. (153 x 1219 mm), 80 Grit Dust port, outside diameter Platen Cast iron Belt table Cast iron, 6 x 10-1/2 in. (153 x 267 mm) Belt table miter slot 5/8 in. (16 mm)

Disc sanding

Disc speed Abrasive disc size and grit Disc table Disc table miter slot Disc table tilt Dust port, outside diameter

Dimensions

Overall dimensions, Sander and Stand (LxWxH) 23 x 26 x 61 in. (584 x 660 x 1550 mm)

Weights

Net weight (sander and stand) 170 lbs. (77 kg) Shipping weight

Belt/Disc Sander only

Stand only

10 in. (254 mm), 80 Grit

Cast iron, 7-1/2 x 13 in. (191 x 330 mm)

Sander only Stand only

J-4210

414550K

414550 414549

1650 SFPM

2-1/2 in. (63.5 mm)

2100 RPM

5/8 in. (16 mm)

45 deg. out

2-1/2 in. (63.5 mm)

121 lbs. (55 kg)

55 lbs. (25 kg)

Table 1

L = length, W = width, H = height RPM = revolutions per minute SFPM = surface feet per minute

Subject to local/national electrical codes.

The specifications in this manual were current at time of publication, but because of our policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

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