Pretul ESMA-4-1/2P2 Angle Grinder

Product Information

Model: ESMA-4-1/2P2

Code: 24035

Power: 630 W

Disc Size: 114.3 mm (4 1/2")

Warning: Read this entire manual completely before using the tool.

Table of Contents

• Technical Specifications
• Electrical Requirements
• Safety Rules for Power Tools
• Safety Rules for Grinders
• Parts
• Assembly
• Start-up
• Maintenance
• Notes
• Authorized Service Centers
• Warranty Policy

Technical Specifications

Power Cord Type: Y-type cord retainer.

Tool Construction Class: Reinforced insulation.

Motor Winding Thermal Insulation Class: Class E.

Warning: If the power cord is damaged, it must be replaced by the manufacturer or an Authorized TRUPER Service Center to avoid any risk of electric shock or serious accident.

Warning: The electrical insulation of this tool may be compromised by splashes or spills of liquids during operation. Do not expose it to rain, liquids, or moisture.

Warning: Before accessing terminals, all power circuits must be disconnected.

Electrical Requirements

Warning: Double insulated tools are equipped with a polarized plug (one blade is wider than the other). This plug fits into a polarized outlet and can only be inserted in one way. If the plug does not fit the outlet, turn it over. If it still does not fit, contact a qualified electrician or install a polarized outlet. Do not alter the plug in any way. Double insulation eliminates the need for a three-prong grounded power cord or a grounded electrical system.

Warning: When using an extension cord, ensure it is of sufficient gauge to carry the current your tool will consume. An undersized cord will cause voltage drops, resulting in power loss and motor overheating. The following table shows the correct gauge to use depending on the cord length and the amperage rating on the tool's data plate. If in doubt, use the next higher gauge.

(*) Can be used as long as the extensions themselves have overcurrent protection. AWG = American Wire Gauge. Reference: NMX-J-195-ANCE-2006

Warning: When operating power tools outdoors, use a grounded extension cord marked for "Outdoor Use" (Voltech® brand). These extensions are specifically for outdoor use and reduce the risk of electric shock.

Safety Rules for Power Tools

• Warning: Keep your work area clean, organized, and well-lit. Cluttered and dark areas can cause accidents.
• Danger: Never use the tool in explosive environments or in the presence of flammable liquids. Sparks generated by the tool could cause an explosion or fire.
• Warning: Keep children and other people at a safe distance while using the tool. Distractions can cause loss of control and accidents.
• Danger: Avoid contact with live electrical lines and circuits. Locate and avoid all electrical lines and circuits, especially hidden wiring, as well as any grounded objects.
• Warning: Always stay alert, be prudent, and use common sense. Familiarity with the tool's use can lead to distraction and accidents.
• Danger: Do not use the tool if you are tired, or under the influence of drugs, alcohol, or medication. A moment of distraction while using the tool can cause serious personal injury.
• Warning: Use the tool with its guards and protectors in place and in good condition. Failure to do so exposes you to serious personal injury.
• Warning: Secure and properly support the workpiece. Use clamps and a stable work surface.
• Warning: Never force the tool. Working within its designed range ensures better work and is safer.
• Warning: Store the tool in a safe place out of the reach of children. Power tools are dangerous in inexperienced hands.
• Warning: Use appropriate clothing. Loose clothing, jewelry, or long hair can be caught by moving parts.
• Warning: Keep hands away from rotating and/or moving parts. Failure to do so exposes you to serious personal injury.
• Warning: Use appropriate personal protective equipment. Eye protection, a dust mask, non-slip safety shoes, a helmet, and hearing protection in appropriate conditions significantly reduce the risk of injury.
• Warning: Disconnect the tool before making adjustments, changing accessories, or storing it. This prevents unexpected starts that could lead to accidents.
• Warning: Never use the tool if the switch does not work or if it is not properly assembled. Doing so exposes you to serious personal injury; have it repaired immediately at an Authorized TRUPER Service Center.
• Warning: Do not overextend your reach. Good support and balance allow for better control of the tool in unexpected situations.
• Warning: Never pull the tool by the power cord. Do not use it for carrying or disconnecting. Damaged or tangled cords increase the risk of electric shock.
• Warning: Avoid accidental starts. Ensure the tool's switch is in the OFF position before connecting or moving it.
• Danger: Remove any adjustment wrench before starting the tool. Additional tools or wrenches left on a rotating part of the tool can cause serious personal injury.
• Warning: Maintain the tool and ensure it is in optimal condition before use. Carefully check its moving parts, alignment, and assembly periodically. Look for any damaged components or parts that do not function properly for immediate repair at an Authorized Service Center.
• Accessories: Use only accessories or replacement parts recommended in this manual or certified by TRUPER.
• This tool complies with the Official Mexican Standard (NOM).

Safety Rules for Grinders

Choosing the Right Disc

• Warning: Never use a disc with a diameter larger than the one specified for the tool.
• Warning: Use only discs or accessories rated for a minimum speed of 11,000 r/min or higher.
• Warning: Use only discs or accessories with the correct bore size for the tool's spindle.
• Warning: Use only discs or accessories specifically designed for the material being worked on.

Before Operating the Grinder

• Take your time to assess the work to be done and ensure all necessary precautions have been taken before starting to grind.
• Danger: Remove any adjustment wrench from the tool. Otherwise, it could be ejected forcefully, causing serious injury to the operator.
• Warning: Check that the disc guard is in good condition and securely fastened. The tool must not be used without the guard.
• Warning: Verify that the disc is not cracked or broken. Lightly tap it with a wooden mallet; the sound it emits will indicate if it is cracked.
• Danger: Ensure the switch is OFF before connecting the tool, otherwise it will start unexpectedly, potentially causing serious injury.
• Warning: Turn on the tool for 30 seconds before use to check for significant vibrations or any unusual movement. If detected, disconnect the tool and go to an Authorized TRUPER Service Center.
• Warning: Verify that the disc rotates freely.
• Do not overtighten the disc, as it may break.
• Warning: For working with small pieces, secure them with clamps or vises. Never use your hands for this purpose.

While Operating the Grinder

• Warning: Never start the tool when the disc is in contact with the workpiece.
• Warning: Use safety glasses, gloves, and an apron when operating the tool.
• Warning: Keep the cord or extension cord behind the tool to avoid accidentally damaging them with the disc.
• Warning: Never hold the tool by the power cord; hold it by the body or the auxiliary handle.
• Warning: Hold the tool by the insulated gripping surfaces when performing operations where the cutting tool might come into contact with hidden wiring or its own cord. Contact with a "live" wire will electrify exposed metal parts and deliver an electric shock to the operator.
• Never strike the workpiece with the disc.
• Warning: For best results during grinding, the angle between the disc and the workpiece should be between 15° and 30°.
• Danger: When the disc is spinning, do not use the spindle lock to stop it, as this is very dangerous and can cause serious injury to the user.
• Warning: Do not touch the disc or the workpiece immediately after grinding. Wait for them to cool down before handling. Do not attempt to cool them with water or oil.
• Warning: Verify that the tool is disconnected before checking, adjusting, or changing the disc.
• Danger: Sparks generated during grinding can be hazardous if proper precautions are not taken. Ensure they do not come into contact with skin or flammable substances.

Incorrect way to operate the grinder

Correct way to operate the grinder

Parts

Diagram of Angle Grinder Parts:

• Spindle Lock
• Guard
• Disc Guard
• Disc
• Outer Flange
• Auxiliary Handle
• Inner Flange
• Switch
• Handle
• Ventilation Slots
• Power Cord

Assembly

Mounting the Protective Guard

• Disconnect the grinder and place it upside down.
• Place the protective guard on the grinder head as shown, then place the washer (A) onto the spindle.
• Tighten the four screws of the washer (B) to secure the guard.
• If using wire brushes instead of abrasive discs, remove the guard by reversing the previous steps.

Mounting the Disc

• Insert the inner flange onto the spindle.
• Place the disc onto the inner flange.
• Place the outer flange onto the spindle.
• Press the spindle lock on the grinder head.
• Screw the outer flange with the two-pin wrench until it is securely fastened.
• Danger: The spindle lock should only be used for changing discs, never for stopping a spinning disc.

Mounting Wire Brushes

• To mount this type of accessory, the flanges are not needed; simply screw the brush (not included) directly onto the grinder's spindle.

Start-up

Mounting the Auxiliary Handle

• For safe operation, use the auxiliary handle. Place it in one of the two mounting holes that make your work easier.

Starting the Tool

The angle grinder is a manual power tool used for grinding and cutting steel, pipes, angle iron, bricks, tiles, stone, and/or ceramic pieces; for removing burrs from metal surfaces, for leveling and smoothing welds. If the accessory is changed, the tool can be used for cleaning rust and polishing metal surfaces and other materials.

• To Start: Connect the plug to the outlet. Push the switch forward to start the grinder.
• Continuous Operation: Push the switch all the way until it locks into the notch (C) on the tool's housing.
• To Stop: Push the rear of the switch. It will release and return to the OFF position, stopping the tool's motor.

How to Hold the Tool Properly

Always hold the tool with both hands. One hand on the main handle and the other on the auxiliary handle. Be careful not to obstruct the ventilation slots.

• Grinding: For best results, hold the tool at a 15° to 30° angle to the workpiece. Use forward and backward movements with light pressure at a constant pace. This prevents the workpiece from overheating, discoloration, or creating burrs.
• Cutting: Do not press, tilt, or oscillate the tool. Work at a moderate speed. The disc must always rotate in the opposite direction of the cutting movement; never in the same direction, as there is a risk of the tool being ejected uncontrollably. For cutting hard stones, it is recommended to use a diamond cutting disc.

Useful Tips

• Work with the disc in the correct position to avoid damaging it.
• Apply less force than the tool's weight to the workpiece to avoid overloading and damaging the motor and disc.
• After installing a new disc, allow it to spin freely for at least one minute before use. If it vibrates, replace it immediately.
• Warning: Avoid working with wood or soft metals like lead, as these materials can quickly saturate the disc and render it unusable.

Maintenance

• Always disconnect the tool before cleaning it.
• Never use water or other liquids; use only a brush.
• Clean after each use with compressed air or a brush, paying special attention to the ventilation areas.
• Check that all tool components are securely fastened.
• The housing should not be cracked or damaged.
• Always check that the cord is not cut or frayed.

Repairs

Use only replacement parts and accessories recommended by the manufacturer. If the tool malfunctions, repairs must be carried out by an Authorized TRUPER Service Center.

Changing Brushes

Brushes should be checked periodically and always replaced by an Authorized TRUPER Service Center when worn. After replacement, ensure the new brushes move freely in the brush holder and have the service center run the tool for 5 minutes to properly seat the brushes and commutator.

Only use genuine TRUPER replacement brushes, specifically designed with the appropriate hardness and electrical resistance for each motor type. Off-specification brushes can damage the motor.

When changing brushes, always replace both brushes.

Notes

The graphics in this manual are for reference only and may differ from the actual appearance of the tool.

Authorized Service Centers

If you have any problems contacting a Service Center, please visit our website www.truper.com for an updated list, or call us at: 01(800) 690-6990 or 01(800) 018-7873 for information on the nearest Authorized TRUPER Service Center.

[List of Authorized Service Centers by State/Region]

Warranty Policy

To purchase parts, components, consumables, and accessories for the product, visit any of the Authorized Service Centers listed in this manual.

Commercial Establishment Seal: [Seal Area]

Date of Purchase: [Date Area]