RIKON 50-1428 Disc Sander User Manual

SPECIFICATIONS

• Motor ……………………………………………………3/4HP, 120V, 5A, 60Hz
• Motor Speed ……………………………………………………….. 3,580 RPM
• Belt Size …………………………………………………………………… 1” x 42”
• Belt Speed …………………………………………………………. 3,265 SFPM
• Belt Table Size ……………………… 7-7/8” x 5-7/8” (190mm x 159mm)
• Belt Table Tilt ………………………………………………………………… 0-45°
• Disc Size ……………………………………………………… 8” (200mm) PSA
• Disc Speed ………………………………………………………….. 3,580 RPM
• Disc Table ………………………….. 10-3/8” x 5-7/8” (260mm x 150mm)
• Disc Table Tilt ……………………………………………………………….. 0-45°
• Miter Gauge …………………………………………………………….. Included
• Miter Gauge Slot …………………………… 5/8” x 1/4” (16mm x 6.5mm)
• Machine Height ………………………………………………19-1/2” (495mm)
• Machine Width …………………………………………….20-1/2” (520.7mm)
• Machine Depth ………………………………………………18-1/2” (470mm)
• Base Size …………………….. 11-13/16” x 10-5/8” (300mm x 270mm)
• Dust Ports (2) …………………………… 1-5/32”-1-1/2” OD x 1-9/16” ID
• (36.5 -38.5mm OD x 32.5mm ID)
• Net Weight ……………………………………………………. 52 lbs. / 23.6 kg.
• Shipping Weight …………………………………………. 55.6 lbs. / 25.7 kg.
• Shipping Carton ………………………….. 17-1/2” x 15-1/4” x 22-13/16”
• 445mm x 390mm x 580mm

This owner’s manual is not a teaching aid and is intended to show assembly, adjustments, and general use.
NOTE: The specifications, photographs, drawings, and information in this manual represent the current model when the manual was prepared. Changes and improvements may be made at any time, with no obligation on the part of RIKON Power Tools, Inc. to modify previously delivered units. Reasonable care has been taken to ensure that the information in this manual is correct and to provide you with the guidelines for the proper safety, assembly, and operation of this machine.

SAFETY SYMBOLS

IMPORTANT!
Safety is the single most important consideration in the operation of this equipment. The following instructions must be followed at all times. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious personal injury. There are certain applications for which this tool was designed. We strongly recommend that this tool not be modified and/or used for any other application other than that for which it was designed. If you have any questions about its application, do not use the tool until you have contacted us and we have advised you.

SAFETY SYMBOLS

SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, or CAUTION. This symbol may be used in conjunction with other symbols or pictographs.

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

WARNING
Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury.

CAUTION
Indicates a potentially hazardous situation, which, if not avoided, could result in minor or
moderate injury.
NOTICE: Shown without a Safety Alert Symbol indicates a situation that may result in property damage.

GENERAL SAFETY

KNOW YOUR POWER TOOL. Read the owner’s manual carefully. Learn the tool’s applications, work capabilities, and specific potential hazards.

BEFORE USING YOUR MACHINE
To avoid serious injury and damage to the tool read and follow all of the Safety and Operating Instructions before operating the machine.

1. Some dust created by using power tools contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Some examples of these chemicals are:

   • Lead from lead-based paints.
   • Crystalline silica from bricks, cement, and other
   • masonry products.
   • 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 dust masks that are specially designed to filter out microscopic particles.

2. READ the entire Owner’s Manual. LEARN how to use the tool for its intended applications.

3. GROUND ALL TOOLS. If the tool is supplied with a 3-prong plug, it must be plugged into a 3-contact electrical receptacle. The 3rd prong is used to ground the tool and provide protection against accidental electric shock. Do NOT remove the 3rd prong. See Grounding Instructions on the following pages.

4. AVOID A DANGEROUS WORKING ENVIRONMENT. DO NOT use electrical tools in a damp environment or expose them to rain.

5. DO NOT use electrical tools in the presence of flammable liquids or gases.

6. ALWAYS keep the work area clean, well-lit, and organized. DO NOT work in an environment with floor surfaces that are slippery from debris, grease, and wax.

7. KEEP VISITORS AND CHILDREN AWAY. DO NOT permit people to be in the immediate work area, especially when the electrical tool is operating.

8. DO NOT FORCE THE TOOL to perform an operation for which it was not designed. It will do a safer and higher quality job by only performing operations for which the tool was intended.

9. WEAR PROPER CLOTHING. DO NOT wear loose clothing, gloves, neckties, or jewelry. These items can get caught in the machine during operations and pull the operator into the moving parts. The user must wear a protective cover on their hair, if the hair is long, to prevent it from contacting any moving parts.

10. CHILDPROOF THE WORKSHOP AREA by removing switch keys, unplugging tools from the electrical receptacles, and using padlocks.

11. ALWAYS UNPLUG THE TOOL FROM THE ELECTRICAL RECEPTACLE when making adjustments, changing parts, or performing any maintenance.

12. KEEP PROTECTIVE GUARDS IN PLACE AND WORKING ORDER.

13. AVOID ACCIDENTAL STARTING. Make sure that the power switch is in the “OFF” position before plugging in the power cord to the electrical receptacle.

14. REMOVE ALL MAINTENANCE TOOLS from the immediate area before turning “ON” the machine.

15. USE ONLY RECOMMENDED ACCESSORIES. The use of incorrect or improper accessories could cause serious injury to the operator and cause damage to the tool. If in doubt, check the instruction manual that comes with that particular accessory.

16. NEVER LEAVE A RUNNING TOOL UNATTENDED. Turn the power switch to the “OFF” position. DO NOT leave the tool until it has come to a complete stop.

17. DO NOT STAND ON A TOOL. Serious injury could result if the tooltips are over, or you accidentally contact the tool.

18. DO NOT store anything above or near the tool where anyone might try to stand on the tool to reach it.

19. MAINTAIN YOUR BALANCE. DO NOT extend yourself over the tool. Wear oil-resistant rubber-soled shoes. Keep the floor clear of debris, grease, and wax.

20. MAINTAIN TOOLS WITH CARE. Always keep tools clean and in good working order. Keep all blades and tool bits sharp, dress grinding wheels, and change other abrasive accessories when worn.

21. EACH AND EVERY TIME, CHECK FOR DAMAGED
    PARTS BEFORE USING THE TOOL. Carefully check all guards to see that they operate properly, are not damaged, and perform their intended functions. Check for alignment, binding, or breaking of moving parts. A guard or other part that is damaged should be immediately repaired or replaced.

22. DO NOT OPERATE TOOLS WHILE TIRED OR UNDER THE INFLUENCE OF DRUGS, MEDICATION, OR ALCOHOL.

23. SECURE ALL WORK. Use clamps or jigs to secure the workpiece. This is safer than attempting to hold the workpiece with your hands.

24. STAY ALERT, WATCH WHAT YOU ARE DOING, AND USE COMMON SENSE WHEN OPERATING A POWER TOOL. A moment of inattention while operating power tools may result in serious personal injury.

25. ALWAYS WEAR A DUST MASK TO PREVENT INHALING DANGEROUS DUST OR AIRBORNE PARTICLES, including wood dust, crystalline silica dust, and asbestos dust. Direct particles away from the face and body. Always operate the tool in a well-ventilated area and provide for proper dust removal. Use a dust collection system wherever possible. Exposure to the dust may cause serious and permanent respiratory or other injury, including silicosis (a serious lung disease), cancer, and death. Avoid breathing the dust, and avoid prolonged contact with dust. Allowing dust to get into your mouth or eyes, or lay on your skin may promote absorption of harmful material. Always use properly fitting NIOSH/OSHA-approved respiratory protection appropriate for dust exposure, and wash exposed areas with soap and water.

26. USE A PROPER EXTENSION CORD IN GOOD CONDITION. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. The table on the following page shows the correct size to use depending on cord length and nameplate amperage rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the larger the diameter of the extension cord. If in doubt about the proper size of an extension cord, use a shorter and thicker cord. An undersized cord will cause a drop in line voltage resulting in a loss of power and overheating. USE ONLY A 3-WIRE EXTENSION CORD THAT HAS A 3-PRONG GROUNDING PLUG AND A 3-POLE RECEPTACLE THAT ACCEPTS THE TOOL’S PLUG.

27. ADDITIONAL INFORMATION regarding the safe and proper operation of this product is available from:

    • Power Tool Institute 1300 Summer Avenue Cleveland, OH 44115-2851 www.powertoolinstitute.org
    • National Safety Council 1121 Spring Lake Drive Itasca, IL 60143-3201 www.nsc.org
    • American National Standards Institute 25 West 43rd Street, 4th Floor New York, NY 10036 www.ansi.org
    • ANSI 01.1 Safety Requirements for Woodworking Machines and the U.S. Department of Labor regulations www.osha.gov

28. SAVE THESE INSTRUCTIONS. Refer to them frequently and use them to instruct others.

ELECTRICAL SAFETY

THIS TOOL MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM ELECTRIC SHOCK. 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 requires a grounding plug (not included). The plug MUST be plugged into a matching electrical receptacle that is properly installed and grounded by ALL local codes and ordinances. DO NOT MODIFY ANY PLUG. If it does not fit the electrical receptacle, have the proper electrical receptacle installed by a qualified electrician.

IMPROPER ELECTRICAL CONNECTION of the equipment grounding conductor can result in a risk of electric shock. The conductor with the green insulation (with or without yellow stripes) is the equipment grounding conductor. DO NOT connect the equipment grounding conductor to a live terminal if repair or replacement of the electric cord or plug is necessary. CHECK with a qualified electrician or service personnel if you do not completely understand the grounding instructions, or if you are not sure the tool is properly
grounded when installing or replacing a plug.

USE ONLY A 3-WIRE EXTENSION CORD THAT HAS THE PROPER TYPE OF A 3-PRONG GROUNDING PLUG THAT MATCHES THE MACHINE’S 3-PRONG PLUG AND ALSO THE 3-POLE RECEPTACLE THAT ACCEPTS THE TOOL’S PLUG. *
REPLACE A DAMAGED OR WORN CORD IMMEDIATELY.

This tool is intended for use on a circuit that has an electrical receptacle as shown in FIGURE A. It shows a 3-wire electrical plug and electrical receptacle that has a grounding conductor. If a properly grounded electrical receptacle is not available, an adapter as shown in FIGURE B can be used to temporarily connect this plug to a 2-contact ungrounded receptacle. The adapter has a rigid lug extending from it that MUST be connected to a permanent earth ground, such as a properly grounded receptacle box.
THIS ADAPTER IS PROHIBITED IN CANADA.

EXTENSION CORDS

THE USE OF AN EXTENSION CORD WITH THIS MACHINE IS NOT RECOMMENDED. For best power and safety, plug the machine directly into a dedicated, grounded electrical outlet that is within the supplied cord length of the machine. If an extension cord needs to be used, it should only be for a limited operation of the machine. The extension cord should be as short as possible in length, and have a minimum gauge size of 14AWG. Check extension cords before each use. If damaged replace immediately. Never use a tool with a damaged cord, since touching the damaged area could cause electrical shock, resulting in serious injury.

Use a proper extension cord. Only use cords listed by Underwriters Laboratories (UL). Other extension cords can cause a drop in line voltage, resulting in a loss of power and overheating of the tool. When operating a power tool outdoors, use an outdoor extension cord marked “W-A” or “W”. These cords are rated for outdoor use and reduce the risk of electric shock.

Warning
Keep the extension cord clear of the working area. Position the cord so that it will not get caught on lumber, tools, or other obstructions while you are working with your power tool. Canadian electrical codes require extension cords to be certified SJT type or better. The use of an adapter in Canada is not acceptable.

SPECIFIC SAFETY INSTRUCTIONS FOR SANDERS

This machine is intended for the surfacing of natural, solid woods and composite materials. Any other use not as specified, including modification of the machine or use of parts not tested and approved by the equipment manufacturer can cause unforeseen damage, and invalidate the warranty.
ATTENTION : The use of this sander still presents risks that cannot be eliminated by the manufacturer. Therefore, the user must be aware that woodworking machines are dangerous if not used with care and all safety precautions are adhered to.

1. Do not operate this machine until you have read all of the following instructions.
2. Do not attempt to operate this machine until it is completely assembled.
3. Do not turn ON this machine if any pieces are damaged or missing.
4. This machine must be properly grounded.
5. If you are not familiar with the operation of the machine, obtain assistance from a qualified person.
6. It is highly recommended that this machine be firmly mounted to a flat and secure work surface or stand.
7. Always wear protective eyewear before operating this machine.
8. Always wear a dust mask and use adequate dust collection and proper ventilation. The use of sanders can produce harmful particles while sanding certain types of wood.
9. Do not wear loose clothing or jewelry when operating this machine. Keep long hair tied back.
10. Always make sure the power switch is in the OFF position before plugging in the machine.
11. Always make sure the power switch is in the OFF position when doing any assembly or setup operation.
12. Make sure all safety guards and hardware are securely tightened before operating the machine.
13. The use of any accessories or attachments not recommended may cause injury to you and damage your machine.
14. Abrasive discs and belts should be the recommended width and length of the manufacturer.
15. Replace worn, frayed, or torn abrasives, as injury to the user, or the machine, may result.
16. Always keep your face and hands clear of moving parts such as belts, discs, and pulleys.
17. Keep power supply cords free of moving parts of the sander. Damaged cords can result in electric shock.
18. Maintain a minimal gap clearance (1/16” or less) between the sanding disc or the sanding belt and their tables.
19. Always support the workpiece with the table or backstop during sanding.
20. Carefully feed work into the rotating sanding belt, or disc, in the downward direction, so that the abrasive action pushes the work down onto the tables where it can be controlled.
21. Do not force the work into the abrasives, as burning of the wood or stalling of the machine may result.
22. Remove material or debris from the work area. Keep the work area neat and clean.

SAVE THESE INSTRUCTIONS. Refer to them often.
This owner’s manual is not a teaching aid and is intended to show assembly, adjustments, and general use.

CALIFORNIA PROPOSITION 65 WARNING
Drilling, sawing, sanding, or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood. This product can expose you to chemicals including Dibutyl phthalate, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

CONTENTS OF PACKAGE UNPACKING AND CLEAN-UP

1. Carefully remove all contents from the shipping carton. Compare the contents with the list of contents to make sure that all of the items are accounted for, before discarding any packing material.
2. Place parts on a protected surface for easy identification and assembly. If any parts are missing or broken, please call RIKON Customer Service (877-884-5167) as soon as possible for replacements.
3. DO NOT turn your machine ON if any of these items are missing. You may cause injury to yourself or damage to the machine.
4. Report any shipping damage to your local distributor. Take photographs for any possible insurance claims.
5. Clean all rust-protected surfaces with ordinary household-type grease or spot remover. Do not use; gasoline, paint thinner, mineral spirits, etc. These may damage painted surfaces.
6. Apply a coat of paste wax to the table to prevent rust. Wipe all parts thoroughly with a clean dry cloth.
7. Set packing material and shipping carton aside. Do not discard until the machine has been set up and is running properly.

TABLE OF LOOSE PARTS

• A. Belt & Disc Sander Assembly
• B. Sanding Belt Table
• C. Lever Handle & Washer for Sanding Belt Table
• D. Belt Tension Handle
• E. Hex Wrenches (3) 4mm, 5mm, 6mm
• F. Sanding Disc Table
• G. Miter Gauge
• H. Lever Handles & Washers for Sanding DiscTable (2)
• I. Sanding Disc Guard
• J. Screws & Washers for Disc Guard (2)
• K. Dust Port Adapters (2) – sizes 1-5/32”-1-1/2” OD x
• 1-9/16” ID (36.5 -38.5mm OD x 32.5mm ID)

TOOL STORAGE
NOTE: Storage to the Miter Gauge and 3 Hex Wrenches are provided on the Belt Guard (#83). SLIDE the tools in or out of the plastic holders.

See pages 17 – 19
for the full Parts Diagram and Parts List

GETTING TO KNOW YOUR SANDER

• A. Mounting Hole in Base
• B. Sanding Disc Table
• C. Miter Gauge
• D. Sanding Disc Guard
• E. Sanding Disc 8” (PSA)
• F. Motor
• G. Belt Tension Handle
• H. Sanding Belt Tracking Knob
• I. Sanding Belt 1” x 42”
• J. Platen for Sanding Belt
• K. Sanding Belt Table
• L. Sanding Belt Table Lock Handle
• M. ON/OFF Safety Switch
• N. Disc Table Angle Scale & Lock Knob
• O. Sanding Belt Safety Cover
• P. Sanding Belt Dust Ports (2) (not shown)
• Q. Hex Wrench Storage (3) 4mm, 5mm, 6mm
• R. Base with Rubber Feet (4)
• S. Power Cord 120V (rear, not shown)

INSTALLATION

MOVING & INSTALLING THE SANDER
When moving the sander, lift the machine with your hands positioned under the motor ends or belt and disc housings. DO NOT carry or move it using the attached work tables.

1. The machine should be firmly bolted to a stand or solid, level workbench to avoid any movement of the machine during use. The sander’s base has holes for this purpose (mounting hardware is not included). For portability and secure clamping of the sander to a workbench, the machine can be first permanently bolted to a piece of plywood. Then the sander can be positioned on your workbench or other solid surface, and the plywood can be clamped in place to secure the sander for use. After use, the plywood can be
   unclamped and the sander stored for future use.

2. When positioning the machine for work, locate it in an area that has ample space around the sander for the moving of projects to be sanded. Align the machine so that it will not face aisles, doorways, or other work areas that bystanders may be in. Do not
   locate or use the machine in damp conditions. Use a Dust Collector to capture the fine dust that is created when sanding. See the safety instructions.

ASSEMBLY

TOOLS REQUIRED FOR ASSEMBLY

• Hex Wrenches 4, 5 & 6mm (supplied)

• 2 Phillips Screwdriver (not supplied)

NOTE
The parts listed in the instructions refer to the Parts Diagrams & Parts Lists on pages 17 to 19. THE MACHINE MUST NOT BE PLUGGED IN THE POWER SWITCH MUST BE IN THE OFF POSITION UNTIL FULL ASSEMBLY AND ALL ADJUSTMENTS ARE COMPLETE.

MOUNTING THE SANDER TO A WORKBENCH
CAUTION: If during operation there is any tendency for the sander to tip over, slide, or walk on the supporting surface, the sander should be properly mounted to a workbench or stand, and at a suitable, safe height for your sanding work to be carried out.

1. Rubber feet are fastened to this sander before shipping. They may, or may not, be used when attaching the sander to a bench or stand.
2. Position the sander on the workbench.
3. Mark the workbench through the two mounting holes located on the left and right sides of the sander base (between the holes for rubber feet).
4. Drill holes in the workbench at the 2 marks.
5. Using long bolts, washers, lock washer nuts; or lag bolts; (fasteners not supplied), secure the sander to the workbench.

INSTALLING THE SANDING BELT TENSION HANDLE
Screw the Tension Handle (#1) into the hole of the Tension Handle Base (#2). FIG. A.

INSTALLING THE BELT SANDER TABLE

1. Locate the belt-sanding Table (#17).
2. Position the table by threading the belt and plate through the table’s slot and square opening.
3. NOTE: Ensure that the locating pin Set Screw (#20) passes through the Table Bracket Support’s (#21) curved hole and the Support is facing inwards.
4. Fasten the table to the frame by using the table Adjustment Knob and 8mm Washer (#18,19). FIG. B.
5. Bring the adjustment knob’s screw through the slot in the bracket opening on the underside of the table, then into the threaded hole in the frame. (#25).
6. Fasten the table in place by using the adjustment lever handle to turn its integral screw.
   NOTE: The Locking Handle is spring-loaded on its internal bolt. To change the handle position, pull the handle out, rotate it to the position you desire, then release the handle and it will align itself back onto the bolt.

INSTALLING THE SANDING DISC TABLE

1. Tilt the Disc-Sanding Table (#87) upward to slide it onto the sander”s Frame (#86), aligning the table Supports’ semi-circular slots with the two threaded holes. FIG. C on page 10.
2. Place Washers (#19) on the threaded shafts of the two Locking Knobs (#18) and insert them through the curved support slots and tighten them into the frame’s threaded holes.
3. Adjust the Disc-Sanding Table to level or any angle between 0° to 90° for sanding. FIG. F & G page 11.
4. When required for sanding small parts or for sanding to specific angles, use the miter gauge which slides into the slot that is in the disc-sanding table.

INSTALLING THE SANDING DISC COVER

1. Mount the sanding Disc Protection Cover (#89) onto the left side of the disc’s metal Cover (#86) that surrounds the sanding disc.
2. Fasten the cover in place with the two Phillips Screws (#90).

BELT TABLE ADJUSTMENTS
For most sanding operations, the table will likely remain at a 90º angle to the belt. To ensure and check the 90º angle, proceed as follows:

1. Loosen the table-locking lever/knob (#18).
2. Tilt the table back to the rear as far as possible.
3. Using a square or protractor, measure the angle of the table against the ‘platen’/ belt backstop (#23) FIG. D. Once the 90º angle is found, lock it in place with the locking lever that is under the table.
4. To set the table to a different angle, tilt the table forward until it is at the required angle. FIG. E.
5. Tighten the table-locking lever to lock the table in position for sanding.
   NOTE: To get the full range of table angling, the table-locking handle lever must be very loose so that it slides along the slot in the table bracket. The table can then be moved back to get maximum angles.

DISC TABLE ADJUSTMENTS

1. To check the trueness of the 90º angle of the disc-sanding table, place a square or other measuring device on the table with the other end against the sanding disc. FIG. F page 11.
2. Loosen the 2 disc-table adjustment handles (#18), and adjust the table angle to 90º.
3. Re-tighten the 2 disc-table adjustment handles. THE MACHINE MUST NOT BE PLUGGED IN AND THE POWER SWITCH MUST BE IN THE OFF POSITION UNTIL FULL ASSEMBLY AND ALL ADJUSTMENTS ARE COMPLETE.
4. To adjust the disc-table to another angle, loosen the 2 disc-table adjustment handles.
5. Set the table at the desired angle. FIG. F & G.
6. Re-tighten the 2 disc-table adjustment handles.

CHANGING THE SANDING DISC
NOTE: Hook & Loop sanding discs cannot be used with this sander! Only 8” sanding discs with pressure-sensitive adhesive (PSA) backing can be used. The sandpaper disc can be removed with the table installed or with the table removed to give more working access to the disc if needed.

DISC CHANGING WITH THE TABLE IN PLACE

1. Remove the disc sander protection cover (#89) to give access to the sanding disc plate and paper (#62, 65).
2. Angling the disc table down will reveal more of the sanding disc and make removing the disc easier.
3. Peel the used abrasive disc from the metal sanding disc plate. A putty knife and hair dryer may help in this process. FIG. H.
4. Make sure that the disc plate is clean of any residue. Mineral spirits will soften the PSA adhesives for its removal. Rotating the disc by hand may be necessary to get access to all of the disc surfaces.
5. Peel the protective backing from the new PSA 8” abrasive sanding disc, then center and press the sanding disc firmly onto the disc plate.

DISC CHANGING WITH THE TABLE REMOVED

1. Remove the disc sander protection cover (#89) to give access to the sanding disc plate and paper (#62, 65).
2. Completely remove the 2 disc-table adjustment handles and washers (#18, 19).
3. Tip the table up and remove it from the guard frame by slipping the table back out of the slots in the frame.
4. Peel the used abrasive disc from the metal sanding disc plate. A putty knife and hair dryer may help in this process. FIG. H.
5. Make sure that the disc plate is clean of any residue. Mineral spirits will soften the PSA adhesives for its removal. Rotating the disc by hand may be necessary to get access to all of the disc surfaces.
6. Peel the protective backing from the new sanding disc.
7. Center and press the new PSA sanding disc firmly onto the disc plate.
8. Replace the sanding table, handles, and cover that were removed in steps 1, 2, and 3 (above). Both Disc and Belt tables have Support Brackets (#2, 75, 76) with Bolts (#22, 77) that can be loosened to adjust the tables closer or further away from the sanding disc or belt. For safety, tables should be positioned 1/16” (1.6mm) away from the abrasives.

INSTALLING & CHANGING SANDING BELTS
SANDING BELT REMOVAL:

1. Remove the side Belt Cover (#83) by loosening the two Hex Bolts (#31) and sliding the cover to the right/ rear to remove it from the frame (#25).

2. Release the belt tension by pulling down on the spring-loaded Tension Handle (#1) and then;

3. Remove the belt past the rear of the belt table and off of the three drive and tracking wheels.
   SANDING BELT INSTALLATION:

4. Release the belt tension by pulling down on the spring-loaded Tension Handle (#1) and then;

5. Install the new belt around the top wheel, the large drive wheel, and then the rear idler wheel. Return the tension on the belt by releasing the tension handle back to its original position.

6. Replace the side cover and re-fasten the 2 Hex Bolts loosened in step 2 above.

7. Before using, check the belt tracking as described in the “Belt Tracking” section, and adjust as necessary.

BELT TRACKING
The belt-tracking adjustment is set at the factory so that the abrasive belt will run true on the pulleys. If, however, the belt should track to one side or the other, an adjustment can be made by turning the Tracking Knob (#7), which is located next to the Tension Handle at the top left of the belt frame. FIG. A, page 9. – Turning the knob clockwise (forward) will cause the belt to track to the left, towards the sander’s frame. – Turning the knob counterclockwise (backward) will cause the belt to track to the right, away from the sander’s frame.

BELT SANDER PLATEN
The Belt Platen (# 23) is a heavy steel support plate that is positioned behind the sanding belt, rising from the table level to a point several inches above the table surface. Its purpose is to support the belt when sanding. The platen should be adjusted so that it is
almost touching the back of the sanding belt. This can be done by loosening the two Hex Bolts (#24) that fasten the bottom of the platen to the sander frame. If the platen is out of alignment for some reason, loosen these two bolts, adjust the platen, and re-tighten the two bolts. FIG. J.

To remove the platen for operations such as curved surface sanding, stropping, polishing, or other special operations, remove the two bolts that fasten the bottom of the platen to the frame, and remove the platen. THE MACHINE MUST NOT BE PLUGGED IN AND THE POWER SWITCH MUST BE IN THE OFF POSITION UNTIL FULL ASSEMBLY AND ALL ADJUSTMENTS ARE COMPLETE. Never walk away from Sander when the machine is running. Always lock the switch in the ‘OFF’ position and unplug from the power supply when not in use.

GENERAL USAGE

ON/OFF SWITCH

1. To start the sander, the Power Switch must be in the “OFF” position. FIG. K.
2. Stand to the side of the sander and plug in the power cord to a suitable power source.
3. Remain to the side of the sander and turn it “ON” by moving the power switch to the up position.
4. Allow the sander to come up to a steady speed. Place the workpiece flat on the appropriate work table for sanding.
5. Firmly hold onto the workpiece to avoid any ‘chattering’ or unwanted workpiece movement that could ruin the project or damage the paper.
6. Move the power switch to the down position to turn the sander “OFF”.
7. Unplug the Sander from the power source when not in use.
   NOTE: To prevent unauthorized use of the sander, the power switch has a removable locking key. With the power switch in the “OFF” position, pull the locking key out. The sander cannot be turned “ON” with the key removed. Insert the locking key back into the power switch to resume sanding operations.

DUST CHUTES / PORTS
Sanding operations are inherently dusty. To help minimize the amount of dust that escapes into the surrounding air, this sander is equipped with two dust ports that can be easily connected to a dust-collection system. FIG. L. There is one dust port for the belt-sanding system and another for the disc-sanding system. Attach your dust collector to the proper dust chute according to which sanding mode (belt or disc) is being used.

NOTE: Two 1-3/8” O.D. / 1-7/32” I.D. (36mm O.D / 31mm I.D.) nozzle adapters (#88) are included with the sander for dust collection with smaller diameter hoses. It is strongly recommended that users employ a dust-collection system when using this belt & disc
sander. The use of a mask or respirator is still recommended, even when a dust-collection system is in use.

MITER GAUGE
A miter gauge is supplied with your sander and can be used on the disc table, which has a slot in its design to fit the miter gauge’s bar. The miter gauge head can be set anywhere up to 45º (right or left) by loosening the lock knob, setting the miter gauge head
to the desired angle, and re-tightening the lock knob. FIG. M.

Never start the machine with work in contact with the sanding belt or disk, or damage to the machine, your project, or personal injury may result from the sudden ‘kick-back’ of the parts.
NOTE: It is strongly recommended that users employ a dust-collection system when using this belt & disc sander. The use of a mask or respirator is still recommended, even when a dust-collection system is in use.

TROUBLESHOOTING

Service on these tools should only be performed by an authorized, qualified technician.

2.     Open the circuit in the motor or lose connections.

3.     Blown fuse or breaker.

4.     Motor failure.

| 1.     Check the power source for proper voltage.

2.     Inspect all lead connections on the motor for loose or open connections. (Send for Servicing.)

3.     Short circuit. Improper match between tool and circuit, fuse, or breaker.

4.     Replace motor capacitor.

The motor will not start – fuses or circuit breakers tripping or blowing.| 1. Short circuit in line, cord, or plug.

2.     Short circuit in motor or loose connections.

3.     Incorrect fuses or circuit breakers in the power line.

| 1.     Inspect the cord or plug for damaged insulation and shorted wires.

2.     Inspect all connections on the motor for loose or shorted terminals and/or worn insulation.

3.     Install the correct fuse circuit breakers or switch tool to an appropriately sized circuit.

Motor overheats.

WARNING: DO NOT TOUCH HOT MOTORS.

Class B motors run hot – up to 95° C (203° F)!

| 4. The motor is overloaded.

5. The extension cord is too long and of insufficient gauge (weight).

6.     Poor air circulation around the motor

| 4.     Reduce load on the motor (pressure on the sandpaper from the object being sanded.)

5.     Utilize an extension cord of appropriate gauge and length or plug the tool directly into an outlet.

6.     Reduce the motor run time to 30 min.

Motor stalls or runs slow – resulting in blown fuses or tripped circuits.| 1. The motor is overloaded.

2.     Short circuit in the motor or loose connections.

3.     Low line voltage.

4.     Incorrect fuses or circuit breakers in the power line.

5. The motor capacitor has failed.

| 1.     Reduce the load on the motor.

2.     Inspect connections on the motor for loose or shorted terminals or worn insulation.

3.     Correct low voltage conditions (for ample: improper extension cord length and/or wire gauge).

4.     Install CORRECT fuses or circuit breakers or plug tools into an appropriate circuit, matched to an appropriate fuse or breaker.

5.     Replace motor capacitor.

The machine slows down when operating.| 1. The feed rate is too great.

2.     Undersized circuit or use of undersized extension cord.

| 1.     Reduce the rate at which the work is fed into the sandpaper.

2.     Ensure circuit wires or extension cords are properly gauged, or eliminate the use of extension cords.

The machine vibrates excessively or makes excess noise.| 1.     Incorrect motor mounting.

2.     Incorrect sanding-belt tension.

3.     Weak or broken belt tension spring.

4. The idler roller is too loose.

5.     Broken/defective sanding belt or disc.

| 1.     Make sure all fasteners are tightened.

2.     Adjust tension-adjustment knob. Follow belt tensioning/tracking instructions in this manual.

3.     Replace the belt tension spring with a service technician.

4.     Have the service technician adjust the idler roller.

5.     Replace sanding belt/disc.

2.     Using too much pressure.

3.     Work held still for too long against the sandpaper.

| 1.     Use a coarser-grit sandpaper.

2.     Reduce workpiece pressure on the sandpaper while sanding.

3.     Do not keep the workpiece sanding in one place for too long.

Deep sanding grooves or scars in the work piece.| 1. The sanding belt/disc grit is too coarse for the desired finish.

2. The workpiece is being sanded across the grain.

3.     Too much sanding force on the workpiece.

4.     Work workpiece held still against the belt disc for too long.

| 1.     Use a finer-grit sanding belt or disc.

2.     Sand with the grain of the wood.

3.     Reduce pressure on the workpiece while sanding.

4.     Keep the work piece moving while sanding.

Sanding surface clogs quickly

| ****

1.     Too much pressure against the belt or disc.

2.     Sanding softwood or highly resinous woods.

| ****

1.     Reduce pressure on the work piece while sanding.

2.     Use different stock, sanding grits, or accept that this will happen and plan on cleaning or replacing belts & discs frequently.

Sanding grains easily rub off the belt or disc.| 1.     Sandpaper has been stored in an incorrect environment.

2.     Sandpaper has been damaged or folded.

| 1.     Ensure sandpaper is stored away from extremely hot & dry or damp/humid conditions.

2.     Store sanding accessories flat – not bent or folded.

The workpiece lifts from the sanding disc-table.| 1.  Sanding on the “up”, left side of the disc, where rotation is up and away from the table.| 1. Sand on the right side of the sanding disc, where the disc rotates down towards the table.

MAINTENANCE

Turn the power switch “OFF” and disconnect the plug from the outlet before adjusting or maintaining the sander. DO NOT attempt to repair or maintain the electrical components of the motor. Take the sander to a qualified service technician for this type of maintenance.

MAINTENANCE REQUIRED FREQUENCY

1. Check the power cord for any damage. Before each use.
2. Check sanding belts and discs for damage. Before each use.
3. Check all guards and hardware to make sure they are secure. Before each use.
4. Check all moving parts for alignment and binding issues. Before each use.
5. Dress/Clean sanding surfaces for best abrasive action. As needed
6. Replace sanding belts or discs when worn or damaged. As needed.
7. Clean and vacuum dust from the motor housing and other sander parts. As needed. Service beyond recommended maintenance on these tools should only be performed by an authorized, qualified technician.

NOTE : Ball bearings are grease-packed at the factory and require no further lubrication.

WIRING DIAGRAM

This machine must be grounded. Replacement of the power supply cable should only be done by a qualified electrician. See page 5 for additional electrical information. This tool is intended for use on a circuit that has a 120-volt electrical receptacle. The illustration on page 5 shows the type of 120V, 3-wire electrical plug and receptacle that has a grounding conductor that is required.

WARRANTY

5-Year Limited Warranty
RIKON Power Tools Inc. (“Seller”) warrants to only the original retail consumer/purchaser of our products that each product be free from defects in materials and workmanship for five (5) years from the date the product was purchased at retail. This warranty may not be transferred. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs, alterations, lack of maintenance, or normal wear and tear. Under no circumstances will Seller be liable for incidental or consequential damages resulting from defective products. All other warranties, expressed or implied, whether of merchantability, fitness for purpose, or otherwise are expressly disclaimed by Seller.

This five-year warranty does not cover products used for commercial, industrial, or educational purposes. The warranty term for these claims will be limited to two years. This limited warranty does not apply to accessory items such as blades, drill bits, sanding discs, grinding wheels, belts, guide bearings, and other related items. Seller shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special, or consequential damages arising from the use of our products.

To take advantage of this warranty, proof of purchase documentation must be provided which has the date of purchase and an explanation of the complaint. The Seller reserves the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. To register your machine online, visit RIKON at www.rikontools.com/warranty To take advantage of this warranty, or if you have any questions, please contact us at 877-884-5167 or email warranty@rikontools.com

PARTS DIAGRAM

50-1428 1” X 42” BELT / 8” DISC SANDER ASSEMBLY

NOTE: Please reference the Manufacturer’s Part Number when calling for Replacement Parts. For Parts under Warranty, the Serial Number of your machine is required.

PARTS LIST

ACCESSORIES

SANDING BELTS

• 1” x 42” Aluminum Oxide
• 50-3080 80 Grit Pack of 5
• 50-3120 120 Grit Pack of 5
• 50-3150 150 Grit Pack of 5
• 50-3180 180 Grit Pack of 5
• 50-3220 220 Grit Pack of 5
• 50-3320 320 Grit Pack of 5
• 50-3999 Assortment Pack of 10
• 2 each of 5 grits
• 80, 120, 150, 180 & 220

SANDING DISCS

• 8” Diameter, PSA, Aluminum Oxide
• 50-8060 60 Grit Pack of 5
• 50-8080 80 Grit Pack of 5
• 50-8120 120 Grit Pack of 5
• 50-8180 180 Grit Pack of 5
• 50-8220 220 Grit Pack of 5
• 50-8999 Assortment Pack of 10
• 2 each of 5 grits
• 80, 120, 150, 180 & 220

For more information
25 Commerce Way
North Andover, MA 01845
877-884-5167 / 978-528-5380
techsupport@rikontools.com

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