Porter-Cable 7425, 7429 User Manual

Double Insulated

Disc Grinder

Instruction

manual

The Model and Serial No. plate is located on the main housing of the tool. Record these numbers in the spaces below and retain for future reference.

Model No. ______________________________________

Type ___________________________________________

Serial No. _______________________________________

IMPORTANT

Please make certain that the person who is to use this equipment carefully reads and understands these instructions before starting operations.

ESPAÑOL: PÁGINA 15 FRANÇAISE : PAGE 29

To learn more about Porter-Cable

visit our website at:

http://www.porter-cable.com

Part No. 302457 - 05-20-05

MODEL

7429

MODEL

7425

Read and understand all warnings and operating instructions before using any tool or equipment. When using tools or equipment, basic safety precautions should always be followed to reduce the risk of personal injury. Improper operation, maintenance or modification of tools or equipment could result in serious injury and property damage. There are certain applications for which tools and equipment are designed. Porter-Cable strongly recommends that this product NOT be modified and/or used for any application other than for which it was designed.

If you have any questions relative to its application DO NOT use the product until you have written Porter-Cable and we have advised you.

Online contact form at www.porter-cable.com Postal Mail: Technical Service Manager

Porter-Cable

4825 Highway 45 North Jackson, TN 38305

Information regarding the safe and proper operation of this tool is available from the following sources:

Power Tool Institute 1300 Sumner Avenue, Cleveland, OH 44115-2851

www.powertoolinstitute.org

National Safety Council 1121 Spring Lake Drive, Itasca, IL 60143-3201

American National Standards Institute, 25 West 43rd Street, 4 floor, New York, NY 10036 www.ansi.org

ANSI 01.1Safety Requirements for Woodworking

Machines, and the U.S. Department of Labor regulations www.osha.gov

SAVE THESE INSTRUCTIONS!

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

SAFETY GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

GENERAL SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

ADDITIONAL SPECIFIC SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . .6

ADDITIONAL SAFETY RULES FOR PAINT REMOVAL . . . . . . . . . . . . .8

CARTON CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

ESPAÑOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

FRANÇAISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

SERVICE CENTER LOCATIONS . . . . . . . . . . . . . . . . . . . . . . .back cover

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS

Some dust created by power sanding, sawing, grinding, drilling,

and other construction activities 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 and 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, always wear NIOSH/OSHA approved, properly fitting face mask or respirator when using such tools.

indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

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

indicates a potentially hazardous situation which, if not avoided,may result in minor or moderate injury.

used without the safety alert symbol indicates potentially hazardous situation which, if not avoided, may result in property damage.

CALIFORNIA PROPOSITION 65

It is important for you to read and understand this manual. The information it contains relates to protecting YOUR SAFETY and PREVENTING PROBLEMS. The symbols below are used to help you recognize this information.

SAFETY GUIDELINES - DEFINITIONS

Read all instructions. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. The term "power tool" in all of the warnings listed below refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

SAVE THESE INSTRUCTIONS

1) Work area safety

a) Keep work area clean and well lit. Cluttered or dark areas invite

accidents.

b) 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.

c) Keep children and bystanders away while operating a power tool.

Distractions can cause you to lose control.

2) Electrical safety a) 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.

b) 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.

c) Do not expose power tools to rain or wet conditions. Water

entering a power tool will increase the risk of electric shock.

d) 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.

e) 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.

3) Personal safety a) 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 orunder the influence of drugs, alcohol or medication. A

moment of inattention while operating power tools may result in serious personal injury.

b) Use safety equipment. Always wear eye protection. Safety

equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c) Avoid accidental starting. Ensure the switch is in the off-position

before plugging in. Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites accidents.

GENERAL SAFETY RULES

d) 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.

e) Do not overreach. Keep proper footing and balance at all times.

This enables better control of the power tool in unexpected situations.

f) 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.

g) If devices are provided for the connection of dust extraction and

collection facilities, ensure these are connected and properly used. Use of these devices can reduce dust-related hazards.

4) Power tool use and care a) 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.

b) 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.

c) Disconnect the plug from the power source before making any

adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) 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.

e) Maintain power tools. Check for misalignment or binding of

moving parts, breakage of parts and any other condition that may affect the power tools operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly

maintained power tools.

f) Keep cutting tools sharp and clean. Properly maintained cutting

tools with sharp cutting edges are less likely to bind and are easier to control.

g) Use the power tool, accessories and tool bits etc., in accordance

with these instructions and in the manner intended for the particular type of power tool, 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.

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.

GENERAL SAFETY RULES

continued

ADDITIONAL SPECIFIC SAFETY RULES

1. Always use proper guard with grinding wheel. A guard protects

operator from broken wheel fragments.

2. Accessories must be rated for at least the speed recommended on the tool warning label. Wheels and other accessories running over

rated speed can fly apart and cause injury.

3. Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of

the tool “live” and shock the operator.

4. Sanding of lead-based paint is not recommended. Lead-based paint should only be removed by a professional.

5. Do not install woodcarving blade on this grinder. Wheels and other accessories running over rated speed can fly apart and cause injury.

6. Wear eye and hearing protection. Always use safety glasses. Everyday eyeglasses are NOT safety glasses. USE CERTIFIED SAFETY EQUIPMENT. Eye protection equipment should comply with ANSI Z87.1 standards. Hearing equipment should comply with ANSI S3.19 standards.

7. Use of this tool can generate and disburse dust or other airborne particles, including wood dust, crystalline silica dust and asbestos dust. Direct particles away from face and body. Always operate

tool in well ventilated area and provide for proper dust removal. Use 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 the dust exposure, and wash exposed areas with soap and water.

SYMBOL DEFINITION

V ........................ volts

A ........................ amperes

Hz ........................ hertz

W ........................ watts

kW ........................ kilowatts

F ........................ farads

µF ........................ microfarads

l ........................ litres

g ........................ grams

kg ........................ kilograms

bar ........................ bars

Pa ........................ pascals

h ........................ hours

min ........................ minutes

s ........................ seconds

........................ no-load speed

…/min or …min

......... Revolutions or reciprocations per minute

or d.c. ................ direct current

or a.c. ................ alternating current

2 ........................ two-phase alternating current

2N ........................ two-phase alternating current with neutral

........................ three-phase alternating current

3N ........................ three-phase alternating current with neutral

........................ rated current of the appropriate fuse-link in amperes

........................ time-lag miniature fuse-link where X is the symbol

for the time/current characteristic, as given in IEC 60127

........................ protective earth

........................ class II tool

IPXX

........................ IP symbol

ADDITIONAL SAFETY RULES FOR PAINT REMOVAL

Extreme care should be taken when removing paint. The peelings, residue, and vapors of paint may contain lead, which is poisonous. Exposure to even low levels of lead 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 for lead.

Lead-based paint should only be removed by a professional.

Persons removing paint should follow these guidelines:

1. Keep the work area well ventilated. Open the windows and put an

exhaust fan in one of them. Be sure the fan is moving air from inside to outside.

2. Remove or cover any carpets, rugs, furniture, clothing, cooking utensils, and air ducts. Such preventive safety measures reduce the risk

of exposure.

3. Place drop cloths in the work area to catch any paint chips or peelings. Wear protective clothing such as extra work shirts, overalls and hats.

Such preventive safety measures reduce the risk of exposure.

4. Work in one room at a time. Furnishings should be removed or placed in the center of the room and covered. Work areas should be sealed off from the rest of the dwelling by sealing doorways with drop cloths.

5. Children, pregnant, or potentially pregnant women and nursing mothers should not be present in the work area until the work is done and all cleanup is complete. Such preventive safety measures reduce

the risk of injury.

6. Wear a dust respirator or a dual filter (dust and fume) respirator mask which has been approved by the Occupational Safety and Health Administration (OSHA), the National Institute of Safety and Health (NIOSH), or the United States Bureau of Mines. These masks and

replaceable filters are readily available at major hardware stores. Be sure the mask fits. Beards and facial hair may keep the masks from sealing properly. Change filters often. DISPOSABLE PAPER MASKS ARE NOT ADEQUATE.

7. Keep food and drink out of the work area. Wash hands, arms, and face and rinse mouth before eating or drinking. Do not smoke or chew gum or tobacco in the work area.

8. Clean up all removed paint and dust by wet mopping the floors. Use a wet cloth to clean all walls, sills and any other surfaces where paint or dust is clinging. DO NOT SWEEP, DRY DUST OR VACUUM. Use a high phosphate detergent or trisodium (TSP) to wash and mop areas.

9. At the end of each work session, put the paint chips and debris in a double plastic bag, close it with tape or twist ties and dispose properly.

Such preventive safety measures reduce the risk of exposure.

10. Remove protective clothing and work shoes in the work area to avoid carrying dust into the rest of the dwelling. Wash work clothes

separately. Wipe shoes off with a wet rag, then wash that rag with the work clothes. Wash hair and body thoroughly with soap and water.

SAVE THESE INSTRUCTIONS!

FOREWORD

Porter-Cable disc grinders are designed for numerous grinding operations. Typical applications are auto body grinding, smoothing welding beads, removing gates and flash from castings, and removing rust.

If an extension cord is used, make sure the conductor size is large enough to prevent excessive voltage drop which will cause loss of power and possible motor damage. A table of recommended extension cord sizes will be found in this section. This table is based on limiting line voltage drop to 5 volts (10 volts for 230 volts) at 150% of rated amperes.

If an extension cord is to be used outdoors it must be marked with the suffix W-A or W following the cord type designation. For example – SJTW-A to indicate it is acceptable for outdoor use.

RECOMMENDED EXTENSION CORD SIZES FOR USE WITH PORTABLE ELECTRIC TOOLS

Length of Cord in Feet

115V 25 Ft. 50 Ft. 100 Ft. 150 Ft. 200 Ft. 250 Ft. 300 Ft. 400 Ft. 500 Ft. 230V 50 Ft. 100 Ft. 200 Ft. 300 Ft. 400 Ft. 500 Ft. 600 Ft. 800 Ft. 1000 Ft.

0-2 18 18 18 16 16 14 14 12 12 2-3 18 18 16 14 14 12 12 10 10 3-4 18 18 16 14 12 12 10 10 8 4-5 18 18 14 12 12 10 10 8 8 5-6 18 16 14 12 10 10 8 8 6 6-8 18 16 12 10 10 8 6 6 6

8-10 18 14 12 10 8 8 6 6 4 10-12 16 14 10 8 8 6 6 4 4 12-14 16 12 10 8 6 6 6 4 2 14-16 16 12 10 8 6 6 4 4 2 16-18 14 12 8 8 6 4 4 2 2 18-20 14 12 8 6 6 4 4 2 2

Nameplate Ampere Rating

EXTENSION CORD SELECTION

MOTOR

Many Porter-Cable tools will operate on either D.C., or single phase 25 to 60 cycle A.C. current and voltage within plus or minus 5 percent of that shown on the specification plate on the tool. Several models, however, are designed for A.C. current only. Refer to the specification plate on your tool for proper voltage and current rating.

Do not operate your tool on a current on which the voltage is not within correct limits. Do not operate tools rated A.C. only on D.C. current. To do so may seriously damage the tool.

FUNCTIONAL DESCRIPTION

CARTON CONTENTS

Packaged with the grinder is a grinding wheel, a side-handle wrench, an instruction manual, and a parts list.

TO INSTALL AUXILIARY HANDLE

An auxiliary handle (A) Fig. 1 is furnished with this tool and can be installed on either side or on top of the front housing. THIS HANDLE SHOULD BE

USED AT ALL TIMES TO MAINTAIN COMPLETE CONTROL OF THE MACHINE.

NOTE: The cover of the auxiliary handle (B) Fig. 2 can be removed to expose

the lugs (C) of a spindle wrench for installing and removing the grinding wheel.

TO START AND STOP MODEL 7425

Make sure that the switch is “OFF” and power circuit voltage is the same as that shown on the specification plate.

1. Connect the tool to the power circuit.

2. Grip the tool firmly to resist starting torque.

3. Slide the switch button (A) Fig. 3 forward to turn tool “ON”. When released, the switch will return to the “OFF” position.

4. To lock the switch in the “ON” position, slide the switch forward to “ON”, and press the front end of the switch button (A) Fig. 3. To release the switch lock, press the back end of the switch button.

ASSEMBLY

NOTE: This tool is shipped assembled with the exception of the auxiliary

handle. Assembly time is approximately five minutes and no tools are required.

OPERATION

Fig. 1

Fig. 2

Fig. 3

TO POSITION THE WHEEL GUARD

The Model 7425 and 7429 Grinders come with a TYPE 27 wheel guard installed. To adjust:

Always use an approved and properly adjusted wheel guard.

DISCONNECT TOOL FROM POWER SOURCE.

Turn the wheel guard in a clockwise direction until it is in a position that places the guard between the operator and the grinding wheel (or other accessory requiring a guard). (See Fig.

5).

Always make sure that the wheel guard is positioned between the operator and the wheel, so that flying chips or pieces of a wheel that might break will be deflected away from the operator.

TO START AND STOP THE MODEL 7429

Make sure that the switch is "OFF" and power circuit voltage is the same as that shown on the specification plate.

1. Connect the tool to the power

source.

2. Squeeze the trigger switch (A) Fig.

4 to turn the tool “ON”. Release the trigger switch to turn the tool “OFF".

3. To lock the tool in the “ON”

position, squeeze the trigger switch, push in the lock button (B) Fig. 4, then release the trigger switch. To remove the tool from the locked position, squeeze the trigger switch and release.

Fig. 4

TO INSTALL GRINDING WHEEL

DISCONNECT TOOL FROM POWER SOURCE.

1. Rest the tool on its back with the spindle facing up.

2. Position the inner flange (A) Fig. 6 on the spindle (B), with the round hub

facing outward, away from the machine. Rotate the flange until it drops into place on the spindle.

NOTE: If you use a Type 1 cut-off wheel, position the nut with the flat side to the wheel.

3. Position the wheel on the spindle.

4. Position the outer flange (A) Fig. 7 on the spindle (B) Fig. 6 with the flat

side against the wheel, and thread into place hand tight.

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Fig. 10

5. Press and hold the spindle lock pin (A) Fig. 8, while rotating the grinding wheel clockwise by hand until the spindle lock engages.

6. Continue holding the spindle lock pin (A) Fig. 8 down while placing the lugs of the handle/spanner wrench (A) Fig. 9 in two of the holes of the outer flange (B) Fig. 9. Tighten securely by turning clockwise (Fig. 10).

USING A DISC GRINDER

Be certain that the wheel guard and auxiliary handle are installed.

Firmly grip the auxiliary handle and motor housing. See Fig. 11A for Model 7425 and Fig. 11B for Model 7429.

Lift the rear of the motor housing so that only the front section of the grinding wheel contacts the work. Use light pressure. Always lift the grinder off of the workpiece before starting or stopping motor.

The arrow on the front gear housing indicates the direction of the rotation of the grinding wheel.

Fig. 11A

Fig. 11B

KEEP TOOL CLEAN

Periodically blow out all air passages with dry compressed air. All plastic parts should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material.

Wear ANSI Z87.1 safety glasses while using compressed air.

FAILURE TO START

Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check for blown fuses or open circuit breakers in the line.

LUBRICATION

This tool has been lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. No further lubrication is necessary.

BRUSH INSPECTION

For your continued safety and electrical protection, brush inspection and replacement on this tool should ONLY be performed by an AUTHORIZED PORTER-CABLE SERVICE STATION or a PORTER-CABLE·DELTA FACTORY SERVICE CENTER.

At approximately 100 hours of use, take or send your tool to your nearest authorized Porter-Cable Service Station to be thoroughly cleaned and inspected. Have worn parts replaced and lubricated with fresh lubricant. Have new brushes installed, and test the tool for performance.

Any loss of power before the above maintenance check may indicate the need for immediate servicing of your tool. DO NOT CONTINUE TO OPERATE TOOL UNDER THIS CONDITION. If proper operating voltage is present, return your tool to the service station for immediate service.

MAINTENANCE

TROUBLESHOOTING GUIDE

For assistance with your tool, visit our website at www.porter-cable.com for a list of service centers or call the Porter-Cable help line at 1-800-487-8665.

SERVICE

REPLACEMENT PARTS

When servicing use only identical replacement parts.

SERVICE AND REPAIRS

All quality tools will eventually require servicing or replacement of parts due to wear from normal use. These operations, including brush inspection and replacement, should ONLY be performed by either an AUTHORIZED PORTERCABLE SERVICE STATION or a PORTER-CABLE·DELTA FACTORY SERVICE CENTER. All repairs made by these agencies are fully guaranteed against defective material and workmanship. We cannot guarantee repairs made or attempted by anyone other than these agencies.

Should you have any questions about your tool, feel free to write us at any time. In any communications, please give all information shown on the nameplate of your tool (model number, type, serial number, etc.).

ACCESSORIES

A complete line of accessories is available from your Porter-Cable•Delta Supplier, Porter-Cable

•Delta Factory Service Centers, and Porter-Cable

Authorized Service Stations. Please visit our Web Site www.porter-cable.com for a catalog or for the name of your nearest supplier.

Since accessories other than those offered by PorterCable

•Delta have not been tested with this product, use of

such accessories could be hazardous. For

safest operation, only Porter-Cable•Delta recommended accessories should be used with this product.

PORTER-CABLE LIMITED

ONE YEAR WARRANTY

Porter-Cable warrants its Professional Power Tools for a period of one year from the date of original purchase. We will repair or replace at our option, any part or parts of the product and accessories covered under this warranty which, after examination, proves to be defective in workmanship or material during the warranty period. For repair or replacement return the complete tool or accessory, transportation prepaid, to your nearest Porter-Cable Service Center or Authorized Service Station. Proof of purchase may be required. This warranty does not apply to repair or replacement required due to misuse, abuse, normal wear and tear or repairs attempted or made by other than our Service Centers or Authorized Service Stations.

ANY IMPLIED WARRANTY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WILL LAST ONLY FOR ONE (1) YEAR FROM THE DATE OF PURCHASE.

To obtain information on warranty performance please write to: PORTER-CABLE CORPORATION, 4825 Highway 45 North, Jackson, Tennessee 38305; Attention: Product Service. THE FOREGOING OBLIGATION IS PORTER-CABLE’S SOLE LIABILITY UNDER THIS OR ANY IMPLIED WARRANTY AND UNDER NO CIRCUMSTANCES SHALL PORTER-CABLE BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights and you may also have other legal rights which vary from state to state.

WARRANTY

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