VONROC AG503AC Angle Grinder Instruction Manual

: June 5, 2024
: VONROC

Table of Contents

VONROC AG503AC Angle Grinder
SAFETY INSTRUCTIONS
MACHINE INFORMATION
TECHNICAL SPECIFICATIONS
DESCRIPTION
ASSEMBLY
OPERATION
MAINTENANCE
WARRANTY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

VONROC AG503AC Angle Grinder

SAFETY INSTRUCTIONS

Read the enclosed safety warnings, the additional safety warnings and the instructions. Failure to follow the safety warnings and the instructions may result in electric shock, ﬁre and/or serious injury. Save the safety warnings and the instructions for future reference.

The following symbols are used in the user manual or on the product:

Read the user manual.
Denotes risk of personal injury, loss of life or damage to the tool in case of non-observance of the instructions in this manual.
Risk of electric shock.
Variable electronic speed.
Wear safety goggles.
Wear hearing protection.
Wear a dust mask.
Class II machine – Double insulation –
You don’t need any earthed plug.
Time-lag miniature fuse-link.
Max temperature 45°C.
Do not throw the battery into ﬁre.
Do not throw the battery into water. Separate collection for Li-ion battery.
The product is in accordance with the applicable safety standards in the European directives.

GENERAL POWER TOOL SAFETY WARNINGS
WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions 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.

Work area safety

Keep the 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.

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 elec-tric shock if your body is earthed or grounded.
Do not expose power tools to rain or wet condi-tions. 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 residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.

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 mask, 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 energising 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 jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewel-lery 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. 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.

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 the battery pack 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 chil-dren 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. 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, tak-ing 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.

Battery tool use and care

Recharge only with the charger speciﬁed by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of ﬁre when used with another battery pack.
Use power tools only with speciﬁcally design-ated battery packs. Use of any other battery packs may create a risk of injury and ﬁre.
When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a ﬁre.
Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, ﬂush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
Do not use a battery pack or tool that is damaged or modiﬁed. Damaged or modiﬁed batteries may exhibit unpredictable behaviour resulting in ﬁre, explosion or risk of injury.
Do not expose a battery pack or tool to ﬁre or excessive temperature. Exposure to ﬁre or temperature above 130 °C may cause explosion. NOTE The temperature „130 °C“ can be replaced by the temperature „265 °F“.
Follow all charging instructions and do not charge the battery pack or tool outside the temperature range speciﬁed in the instructions. Charging improperly or at temperatures outside the speciﬁed range may damage the battery and increase the risk of ﬁre.

Service

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.
Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

SAFETY WARNINGS COMMON FOR GRINDING OR ABRASIVE CUTTING-OFF OPERATIONS

This power tool is intended to function as a grind- er tool. 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.
Operations such as sanding, wire brushing, polishing are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personal injury.
Do not use accessories which are not specifi- cally designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and ﬂy apart.
The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
Threaded mounting of accessories must match the grinder spindle thread. For accessories mounted by flanges, the arbour hole of the accessory must ﬁt the locating diameter of the ﬂange. Accessories that do not match the mounting hard-ware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. If power tool or accessory is dropped, inspect for damage or install an undam- aged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping ﬂying debris generated by various operations. The dust mask or respirator must be capable of ﬁltrating particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss.
Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may ﬂy away and cause injury beyond immediate area of opera-tion.
Hold the power tool by insulated gripping sur- faces only, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
Position the cord clear of the spinning acces- sory. If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory.
Never lay the power tool down until the accessory has come to a complete stop. The spinning acces-sory may grab the surface and pull the power tool out of your control.
Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
Do not operate the power tool near flammable materials. Sparks could ignite these materials.
Do not use accessories that require liquid cool- ants. Using water or other liquid coolants may result in electrocution or shock.

Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direc-tion opposite of the accessory’s rotation at the point of the binding. For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions. Kick-back is the result of power tool misuse and/or incor-rect operating procedures or conditions and can be avoided by taking proper precautions as given below.

Maintain a firm grip on the power tool and po- sition your body and arm to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
Never place your hand near the rotating acces- sory. Accessory may kickback over your hand.
Do not position your body in the area where power tool will move if kickback occurs. Kick-back will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

SAFETY WARNINGS SPECIFIC FOR GRINDING AND ABRASIVE CUTTING-OFF OPERATIONS

Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe.
The grinding surface of centre depressed wheels must be mounted below the plane of the guard lip. An improperly mounted wheel that projects through the plane of theguard lip cannot be adequately protected.
The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed to- wards the operator. The guard helps to protect the operator from broken wheel fragments, accidental contact with wheel and sparks that could ignite clothing.
Wheels must be used only for recommended applications. For example: do not grind with the side of cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces ap-plied to these wheels may cause them to shatter.
Always use undamaged wheel flanges that are of correct size and shape for your selected wheel. Proper wheel ﬂanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel ﬂanges.
Do not use worn down wheels from larger pow- er tools. Wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst.

ADDITIONAL SAFETY WARNINGS SPECIFIC FOR ABRASIVE CUTTING-OFF OPERATIONS

Cut-off operations are only suitable with a special protection guard (not included) Fig. C2 – D2.3

Do not “jam” the cut-off wheel or apply ex- cessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage.
Do not position your body in line with and behind the rotating wheel. When the wheel, at the point of operation, is moving away from your body, the possible kickback may propel the spin-ning wheel and the power tool directly at you.
When wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold the power tool motionless until the wheel comes to a complete stop. Never attempt to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take corrective action to eliminate the cause of wheel binding.
Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully re-enter the cut. The wheel may bind, walk up or kickback if the power tool is restart-ed in the workpiece.
Support panels or any oversized workpiece to minimize the risk of wheel pinching and kick- back. Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of the wheel.
Use extra caution when making a “pocket cut” into existing walls or other blind areas. The protruding wheel may cut gas or water pipes, electrical wiring or objects that can cause kick-back.

Electrical safety

Always check that the voltage of the power supply corresponds to the voltage on the rating plate.

Do not use the machine if the mains cable or the mains plug is damaged.
Only use extension cables that are suitable for the power rating of the machine with a minimum thickness of 1.5 mm2. If you use an extension cable reel, always fully unroll the cable.

MACHINE INFORMATION

Intended use
Your angle grinder has been designed for grinding masonry and steel materials without the use of water. For cutting, a special protection guard must be used (not included). Fig. D2.

TECHNICAL SPECIFICATIONS

Model No.	AG503AC
Mains voltage	220-240V~
Mains frequency	50Hz
Power input	2400W
No-load speed	6800 /min
Grinding disc Diameter: Bore:	****

230 mm

22.2 mm

Wear hearing protection

Vibration level
The vibration emission level stated in this instruction manual has been measured in accordance with a standardized test given in EN60745; it may be used to compare one tool with another and as a prelim-inary assessment of exposure to vibration when using the tool for the applications mentioned.

Using the tool for different applications, or with different or poorly maintained accessories, may significantly increase the exposure level.
The times when the tool is switched off or when it is running but not actually doing the job, may significantly reduce the exposure level.

Protect yourself against the effects of vibration by maintaining the tool and its accessories, keeping your hands warm, and organizing your work patterns.

DESCRIPTION

The numbers in the text refer to the diagrams on page 2-3.

Spindle lock button
Allen screw
Protection guard
Carbon brush cover
On/Off switch
Side handle connection point
Side handle
Allen key
Rear handle
Handle release knob
Spindle
Mounting flange
Wheel disc (not included)
Clamping nut
Spanner

ASSEMBLY

Before assembly, always switch off the machine and remove the mains plug from the mains.

Assembling the protection guard (Fig. C and D)

Place the machine on a table with the spindle (11) facing upwards.
Place the protection guard (3) over the machine head as shown in Figure C making sure the ridg-es on the protection guard fall into the notches of the machine head.
Turn the protection guard counterclockwise as shown in Figure D.
Fix the allen screw (2) on the guard (3) with the allen key (8).
You can adjust the position of the protection guard by releasing the allen screw (2), adjust the guard to the desired position and fixing the allen screw again.

Never attempt to remove the guard. Mounting and removing the wheel disc (Fig. B)

Do not use the machine without the guard. Only use sharp and undamaged wheel discs.

Always use suitable wheel disc for this machine with diameter Ø 230 mm and a bore from 22.2 mm the thickness of the wheel disc should be 6 mm for wheel disc for grinding and 3 mm for wheel disc for cutting, the mounting wheel disc may not touch the safety guard.

Mounting

Place the machine on a table with the protection guard (3) facing upwards.
Mount the flange (12) onto the spindle (11).
Place the wheel disc (13) onto the spindle (11).
Keep the spindle lock button (1) pressed and firmly tighten the clamping nut (14) onto the spindle (11) by using the spanner (15).

Removing

Place the machine on a table with the protec-tion guard (3) facing upwards.
Keep the spindle lock button (1) pressed and loos-en the clamping nut (14) using the spanner (15).
Remove the wheel disc (13) from the spindle (11).
Keep the spindle lock button (1) pressed and firmly tighten the clamping nut (14) using the spanner (15).

Mounting the side handle (Fig. A and E)

The side handle (7) can be screwed into one of the three side handle connection points (6).

OPERATION

Make sure that the work piece is properly supported or ﬁxed.

Rear handle
Before rotating the handle, always switch off the machine and remove the mains plug from the mains.

To unlock the handle (9), push and hold the handle release knob (10).
Rotate the handle (9) into one of the 3 available positions and release the handle release knob (10).

Before switching the tool on, ensure the handle release knob (10) clicks and locks into place when changing handle position.

Switching on and off

To switch the machine on, push the switch for-ward and press the on/off switch (5).
To switch the machine off, release the On/off switch (5).
Hold the machine away from the work piece when turning it on and off because the wheel disc could damage the work piece.
Clamp the work piece firmly or use another meth-od to ensure that it cannot move while working.
Check the discs regularly. Worn wheel discs have a negative effect on the machine’s efficiency. Change to a new wheel disc in good time.

Deburring

An angle of inclination of 30° to 40° will give the best results when deburring. Move the machine back and forth using light pressure. This will prevent the work piece from discolouring or becoming too hot and will avoid making groves. Never use abrasive cutting discs for deburring work!

Cutting
For cutting, a special protection guard must be used (not included). Maintain firm contact with the work piece to prevent vibration and do not tilt or apply pressure and when cutting. Use moderate pressure when working, appropriate to the material that is being worked on. Do not slow down wheel discs by applying sideways counter pressure. The direction in which you want to cut is important. The machine must always work against the direction of the cut; so never move the machine in the other direction! There is the risk that the machine will catch in the cut causing kickback and that you will lose control.

Hints for optimum use

Clamp the workpiece. Use a clamping device for small workpieces.
Hold the machine with both hands.
Switch on the machine.
Wait until the machine has reached full speed.
Place the wheel disc on the workpiece.
Slowly move the machine along the workpiece, firmly pressing the wheel disc against the workpiece.
Do not apply too much pressure on the machine. Let the machine do the work.
Switch off the machine and wait for the machine to come to a complete standstill before putting the machine down.

MAINTENANCE

Before cleaning and maintenance, always switch off the machine and remove the main plug from the mains. Clean the machine casings regularly with a soft cloth, preferably after each use. Make sure that the ventilation openings are free of dust and dirt. Remove very persistent dirt using a soft cloth moistened with soapsuds. Do not use any solvents such as gasoline, alcohol, ammonia, etc. Chemicals such as these will damage the synthetic components.

ENVIRONMENT
Faulty and/or discarded electrical or electronic apparatus have to be collected at the appropriate recycling locations.

Only for EC countries
Do not dispose of power tools into domestic waste. According to the European Guideline 2012/19/EC for Waste Electrical and Electronic Equipment and its implementation into national right, power tools that are no longer usable must be collected separately and disposed of in an environmentally friendly way.

WARRANTY

VONROC products are developed to the highest quality standards and are guaranteed free of defects in both materials and workmanship for the period lawfully stipulated starting from the date of original purchase. Should the product develop any failure during this period due to defective material and/or workmanship then contact VONROC directly. The following circumstances are excluded from this guarantee:

Repairs and or alterations have been made or attempted to the machine by unauthorized service centers;
Normal wear and tear;
The tool has been abused, misused or improperly maintained;
Non-original spare parts have been used.

This constitutes the sole warranty made by the company either expressed or implied. There are no other warranties expressed or implied that extend beyond the face hereof, herein, including the implied warranties of merchantability and fitness for a particular purpose. In no event shall VONROC be liable for any incidental or consequential damages. The dealer’s remedies shall be limited to the repair or replacement of nonconforming units or parts.