HARBOR FREIGHT 58079 Surface Conditioning Tool Owner’s Manual

HARBOR FREIGHT 58079 Surface Conditioning Tool

Owner’s Manual & Safety Instructions

Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance, and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
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Email our technical support at: productsupport@harborfreight.com

When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible. Copyright© 2021 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, the actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.
WARNING: Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL.

Warning Symbol and definitions

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
DANGER: Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE: Addresses practices not related to personal injury.

IMPORTANT SAFETY INFORMATION

General power tool Safety Warnings

Read all safety warnings, instructions, illustrations and specifications provided with this power tool.
Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

1. Work area safety

   • Keep work area clean and well-lit. Cluttered or dark areas invite accidents.
   • Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
   • Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

2. Electrical safety

   • power tool plugs must match the outlet. never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.

   • avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators.
     There is an increased risk of electric shock if your body is earthed or grounded.

   • Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.

   • Do not abuse the cord. never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.

   • When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.

   • if operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (gfci) protected supply. Use of a GFCI reduces the risk of electric shock.

3. personal safety

   • Stay alert, watch what you are doing and use common 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 inattention while operating power tools may result in serious personal injury.

   • use personal protective equipment. always wear eye protection. Protective equipment such as dust masks, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

   • prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.

   • remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.

   • Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.

   • Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.

   • if devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. The use of dust collection can reduce dust-related hazards.

   • Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.

   • Only use safety equipment that has been approved by an appropriate standards agency. Unapproved safety equipment may not provide adequate protection. Eye protection must be ANSI-approved and breathing protection
     must be NIOSH-approved for the specific hazards in the work area.

   • Avoid unintentional starting. Prepare to begin work before turning on the tool.

   • Do not lay the tool down until it has come to a complete stop. Moving parts can grab the surface and pull the tool out of your control.

   • When using a handheld power tool, maintain a firm grip on the tool with both hands to resist starting torque.

   • Do not leave the tool unattended when it is plugged into an electrical outlet. Turn off the tool, and unplug it from its electrical outlet before leaving.

   • This product is not a toy. Keep it out of reach of children.

   • People with pacemakers should consult their physician(s) before use. Electromagnetic fields in close proximity to the heart pacemakers could cause pacemaker interference or pacemaker failure. In addition, people with pacemakers should:

   • Avoid operating alone.

   • Do not use with Power Switch locked on.

   • Properly maintain and inspect to avoid electrical shock.

   • Properly ground power cord.
     Ground Fault Circuit Interrupter (GFCI) should also be implemented – it prevents sustained electrical shock.

   • The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors that cannot be built into this product but must be supplied by the operator.

4. power tool use and care

   • Do not force the power tool. use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
   • Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
   • Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
   • Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
   • Maintain power tools and accessories. check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. if damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
   • Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
   • use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
   • Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

5. Service

   • a. Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
     b. Maintain labels and nameplates on the tool. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

6. polishing drum safety warnings

   • Hold the power tool by insulated gripping surfaces, because the sanding surface may contact its own cord. Cutting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
   • Extreme care should be taken when removing paint. The peelings, residue and vapors of paint may contain lead, which is poisonous. Any pre-1977 paint may contain lead and paint applied to homes prior to 1950 is likely to contain lead. Once deposited on surfaces, hand-to-mouth contact can result in the ingestion of lead. Exposure to even low levels can cause irreversible brain and nervous system damage; young and unborn children are particularly vulnerable. Before beginning any paint removal process you should determine whether the paint you are removing contains lead. This can be done by your local health department or by a professional who uses
     a paint analyzer to check the lead content of the paint to be removed.
     LEAD BASED PAINT SHOULD ONLY BE REMOVED BY A PROFESSIONAL AND SHOULD NOT BE REMOVED USING THIS TOOL.

7. Vibration Safety
   This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent physical injury, particularly to the hands, arms and shoulders.
   To reduce the risk of vibration-related injury:

   • Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check-ups to ensure medical problems are not being caused or worsened from use. Pregnant women or people who have impaired blood circulation to the hand, past hand injuries, nervous system disorders, diabetes, or Raynaud’s Disease should not use this tool. If you feel any symptoms related to vibration (such as tingling, numbness, and white or blue fingers), seek medical advice as soon as possible.
   • Do not smoke during use. Nicotine reduces the blood supply to the hands and fingers, increasing the risk of vibration-related injury.
   • Wear suitable gloves to reduce the vibration effects on the user.
   • Use tools with the lowest vibration when there is a choice.
   • Include vibration-free periods each day of work.
   • Grip tool as lightly as possible (while still keeping safe control of it). Let the tool do the work.
   • To reduce vibration, maintain the tool as explained in this manual. If any abnormal vibration occurs, stop use immediately.

Grounding

WARNING: tO prEVEnt ELEctric SHOcK anD DEatH FrOM incOrrEct GrOunDinG WirE cOnnEctiOn: check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the power cord plug provided with the tool. never remove the grounding prong from the plug. Do not use the tool if the power cord or plug is damaged. if damaged, have it repaired by a service facility before use. if the plug will not fit the outlet, have a proper outlet installed by a qualified electrician.

Grounded tools: tools with three prong plugs

1. Tools marked with “Grounding Required” have a three wire cord and three prong grounding plug. The plug must be connected to a properly grounded outlet. If the tool should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user, reducing the risk of electric shock. (See 3-prong plug and Outlet.)
2. The grounding prong in the plug is connected through the green wire inside the cord to the grounding system in the tool. The green wire in the cord must be the only wire connected to the tool’s grounding system and must neverbe attached to an electrically “live” terminal. (See 3-prong plug and Outlet.)
3. The tool must be plugged into an appropriate outlet, properly installed and grounded in accordance with all codes and ordinances. The plug and outlet should look like those in the preceding illustration. (See 3-prong plug and Outlet.)

Double insulated tools: tools with two prong plugs

1. Tools marked “Double Insulated” do not require grounding. They have a special double insulation system which satisfies OSHA requirements and complies with the applicable standards of Underwriters Laboratories, Inc., the Canadian Standard Association, and the National Electrical Code.
2. Double insulated tools may be used in either of the 120 volt outlets shown in the preceding illustration.(See Outlets for 2-prong plug.)

Extension cords

1. Grounded tools require a three wire extension cord. Double Insulated tools can use either a two or three wire extension cord.
2. As the distance from the supply outlet increases, you must use a heavier gauge extension cord. Using extension cords with inadequately sized wire causes a serious drop in voltage, resulting in loss of power and possible tool damage. (See table a.)
3. The smaller the gauge number of the wire, the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher current than a 16 gauge cord. (See table a.)
4. When using more than one extension cord to make up the total length, make sure each cord contains at least the minimum wire size required. (See table a.)
5. If you are using one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the required minimum cord size. (See table a.)
6. If you are using an extension cord outdoors, make sure it is marked with the suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
7. Make sure the extension cord is properly wired and in good electrical condition. Always replace a damaged extension cord or have it repaired by a qualified electrician before using it.
8. Protect the extension cords from sharp objects, excessive heat, and damp or wet areas.

TABLE A: RECOMMENDED MiniMuM WirE GauGE FOr EXtEnSiOn cOrDS* (120/240 VOLt)

*taBLE a: rEcOMMEnDED MiniMuM WirE GauGE FOr EXtEnSiOn cOrDS (120/240 VOLt)**

naMEpLatE

aMpErES

(at full load)

| EXtEnSiOn cOrD LEnGtH
25´| 50´| 75´| 100´| 150´
0 – 2.0| 18| 18| 18| 18| 16
2.1 – 3.4| 18| 18| 18| 16| 14
3.5 – 5.0| 18| 18| 16| 14| 12
5.1 – 7.0| 18| 16| 14| 12| 12
7.1 – 12.0| 18| 14| 12| 10| –
12.1 – 16.0| 14| 12| 10| –| –
16.1 – 20.0| 12| 10| –| –| –
* Based on limiting the line voltage drop to five volts at 150% of the rated amperes.

Symbology

Specifications

Setup – Before use:

read the EntirE iMpOrtant SaFEty inFOrMatiOn section at the beginning of this manual including all text under subheadings therein before set up or use of this product.
note: For additional information regarding the parts listed in the following pages, refer to Parts List and Diagram on page 10.

Install auxiliary Handle

tO prEVEnt SEriOuS inJury:
Do not operate tool without auxiliary Handle installed. Attach Auxiliary Handle using Handle Screws and included Hex Wrench.

power Supply requirements

Grounded 120VAC 15A outlet.
Functions

Operating instructions

read the EntirE iMpOrtant SaFEty inFOrMatiOn section at the beginning of this manual including all text under subheadings therein before set up or use of this product.

Workpiece and Work area Set up

1. Workpiece selection:
   • Workpiece must be free of foreign objects.
   • Wear a NIOSH-approved respirator and have appropriate ventilation whenever removing paint.
   • Designate a work area that is clean and well lit. The work area must not allow access by children or pets to prevent distraction and injury.
2. Route the power cord along a safe route to reach the work area without creating a tripping hazard or exposing the power cord to possible damage. The power cord must reach the work area with enough extra length to allow free movement while working.
3. Secure loose workpieces using a vise or clamps (not included) to prevent movement while working.
4. There must not be objects, such as utility lines, nearby that will present a hazard while working.

tool changing

WARNING: tO prEVEnt SEriOuS inJury FrOM acciDEntaL OpEratiOn: Make sure that the power Switch is in the off-position and unplug the tool from its electrical outlet before performing any procedure in this section. removing Drum.

1. Press and hold Spindle Lock to stop Drum from rotating.
2. While pressing Spindle Lock, remove Screw by turning clockwise with included hex wrench.
3. Remove Washer and Drum.

installing Drum

1. Align indents on Drum with tabs on Spindle, then install Drum.
2. Insert Screw into Washer, then thread Screw into Spindle counterclockwise with included hex wrench.

General instructions for use

1. Hold tool with both hands. Grasp Handle with one hand and Auxiliary Handle with other hand.

2. Make sure that the Power Switch is in the off-position, then plug in the tool.

3. Adjust Speed Dial.
   note: If workpiece gets hot, reduce speed.

4. Apply tool to workpiece, then turn on tool and let it come up to full speed.
   note: Soft-start feature prevents tool from jumping at start up, so tool may initially seem slow to start.

5. To create a smoother finish, keep tool moving across the work surface. Do not allow it to rest on one spot for a long time while it is operating.

6. Engage Trigger Lock as needed.

7. To prevent accidents, turn off the tool, let it come to a complete stop before setting it down, and unplug it after use. Clean, then store the tool indoors out of children’s reach.

Maintenance and Servicing instructions

procedures not specifically explained in this manual must be performed only by a qualified technician.

WARNING:
tO prEVEnt SEriOuS inJury FrOM acciDEntaL OpEratiOn:
Make sure that the power Switch is in the off-position and unplug the tool from its electrical outlet before performing any procedure in this section.

tO prEVEnt SEriOuS inJury FrOM tOOL FaiLurE:
Do not use damaged equipment. if abnormal noise or vibration occurs, have the problem corrected before further use.

cleaning, Maintenance, and Lubrication

1. BEFOrE EacH uSE, inspect the general condition of the tool. Check for:
   • loose hardware,
   • misalignment or binding of moving parts,
   • damaged cord/electrical wiring,
   • cracked or broken parts, and
   • any other condition that may affect its safe operation.
2. aFtEr uSE, wipe external surfaces of the tool with clean cloth.
3. WarninG! tO prEVEnt SEriOuS inJury: if the plug or the supply cord of this power tool is damaged, it must be replaced only by a qualified service technician.

Troubleshooting

2.    No power at outlet.

3.    Internal damage or wear. (Carbon brushes or

Power Switch, for example.)

| 1.    Check that cord is plugged in.

2.    Check power at outlet. If outlet is unpowered, turn off tool and check the circuit breaker.

If breaker is tripped, make sure circuit is right capacity for tool and circuit has no other loads.

3.    Have technician service tool.

Tool operates slowly.| 1.    Forcing tool to work too fast.

2.    Extension cord too long or cord diameter too small.

| 1.    Allow tool to work at its own rate.

2. Eliminate use of extension cord. If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords

in Grounding section on page 5.

Performance

decreases over time.

| Carbon brushes worn

or damaged.

| Have qualified technician replace brushes.
Excessive noise

or rattling.

| Internal damage or wear. (Carbon

brushes or bearings, for example.)

| Have technician service tool.
Overheating.| 1.    Forcing tool to work too fast.

2.    Blocked motor housing vents.

3.    Motor being strained by long or small diameter extension cord.

| 1.    Allow tool to work at its own rate.

2.    Wear ANSI-approved safety goggles and NIOSH-approved dust mask/respirator while blowing dust out of motor using compressed air.

3. Eliminate use of extension cord. If an extension cord is needed, use one with the proper diameter for its length and load. See Extension Cords

in Grounding section on page 5.

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.

Parts List and Diagram

PLEaSE rEaD tHE FOLLOWinG carEFuLLy
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

parts List

Assembly Diagram

Limited 90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We 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 product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resultedfrom causes not within the scope of our warranty, then you must bear the cost of returning the product. This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

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