CROWN CT13497-115 Angle Grinder Instruction Manual

CROWN CT13497-115 Angle Grinder

Power tool specifications

Noise information

Always wear ear protection if the sound pressure exceed 85 dB(A).
WARNING – To reduce the risk of injury, user must read instruction manual!

General safety rules

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 work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmosphere, 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 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 residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock. NOTE! The term “residual current device (RCD)” may be replaced by the term “ground fault circuit interrupter (GFCI)” or “earth leakage circuit breaker (ELCB)”.
• Warning! Never touch the exposed metal surfaces on gearbox, shield, and so on because touching metal surfaces will interfere with the electromagnetic wave, thus causing potential injury or accidents.

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 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 jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery 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.
• Warning! Power tools can produces an electromagnetic field during operation. This field may under some circumstances interfere with active or passive medical implants. To reduce the risk of serious or fatal injury, we recommend persons with medical implants to con-sult their physician and the medical implant manufacturer before operating this power tool.

Power tool use and care

• The persons with lowered psychophysical or mental aptitudes, as well as children, can not operate the power tool, if they are not supervised or instructed about use of the power tool by a person responsible for their safety.
• 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 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. 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 hazard-ous 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.
• Note that when you operate a power tool, please hold the auxiliary handle correctly, which is helpful when controlling the power tool. Therefore, proper holding can reduce the risk of accidents or injuries.

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.
• Follow instructions for lubricating and changing accessories.

Special safety warnings
Safety warnings common for grinding, sanding, wire brushing, polishing or abrasive cutting-off operations:

• This power tool is intended to function as a grinder, sander, wire brush, polisher or cut-off 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 grinding, sanding, wire brushing, polishing or cutting-off 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 specifically 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.
• The arbour size of wheels, flanges, backing pads or any other accessory must properly fit the spindle of the power tool. Accessories with arbour holes that do not match the mounting hardware 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 undamaged 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 operation.
• Hold the power tool by insulated gripping surfaces 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 accessory. 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 accessory 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 coolants. 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 direction 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.
Kickback is the result of power tool misuse and / or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.

• Maintain a firm grip on the power tool and position 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 accessory. Accessory may kickback over your hand.
• Do not position your body in the area where power tool will move if kickback occurs. Kickback 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 guidelines during power tool operation
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 guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed towards 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 applied 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 power tools. Wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst.
• When using a cymbal-shaped grinding wheel, you should ensure glass fiber reinforced plastic grind-ing wheel is used only.
• The principal axis, flange (especially the mounting surface) or lock nut shall not be damaged to avoid fracture of grinding wheel.
• Before the switch is turned on, you should ensure the grinding wheel is not in touch with the workpiece.
• Before the tool comes into use, you should let the tool run for a while. Please note that vibration or swing may indicate poor installation or imbalance of the grinding wheel.
• Grinding shall be carried out on designated surface of the grinding wheel.
• Attention should be paid to the flying sparks. When holding the tool, you should avoid sparks’ flying to you or other people or combustible.
• The tool shall not be left alone during operation. You should operate the tool only when you hold it.
• You shall not touch the workpiece immediately after operation considering that it might be very hot and cause skin burns.
• Before the tool is used for any operation, you should switch off the tool, pull out the power plug or take out the battery box.
• Please follow instructions of the manufacturer for proper installation and use of the grinding wheel. Please be careful to handle and store the grinding wheel.
• Do not use separate release casings or adapters to fit the large hole grinding wheel.
• Please use the flange specified for the tool.
• With respect to the tool used for installing threaded hole grinding wheel, please ensure thread in the grinding wheel is long enough and could match the length of principal axis.
• Check and ensure that the workpiece is properly supported.
• Please note that, after cutting off power supply of the tool, the grinding wheel will continue to rotate.
• Please use short circuit breaker (30mA) to ensure safety of the operator when it is very hot and moist in the workplace or you are seriously polluted by conductive dust.
• Do not use the tool on any material containing asbestos.
• Do not use water or grinding fluid.
• Please ensure that the ventilation opening is clean when working in dusty environment. If the dirt must be removed, please cut off the power of the tool (with non-metal article) to avoid damage to internal parts.

Additional safety instructions for cutting-off operations

• 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 spinning 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.
• If the power supply suddenly cuts during operation, immediately move on / off switch into off in order to prevent accidental starting of the power tool.
• Slow the rotation of the accessories caused by inertia down with the help of a spindle lock or applying force to the side surface of discs is strictly forbidden. Using spindle lock for this purpose will put the power tool out of operation and void the warranty.

Warning: the chemical substances contained in dust generated in sanding, cutting, sawing, grinding, drilling and other construction industry activities may result in cancer, congenital deficiency or be harmful to the fertility. The ion of some chemical sub-stances shall be:

• Before any repair and replacement work to the machine, the power plug must be pulled out firstly.
• The transparent two silicon oxide and other masonry products in the wall bricks and cement; the chromium arsenic (CCA) in wood with chemical treatment. The harm degree of these substances shall depend on the frequent degree of you carrying out these works. If you want to reduce the contact with these chemical substances, please work in the place with ventilation and you shall use the appliances with safety certificates (such as the dust mask designed with tiny dust filter). Notice the power voltage: in power connection, you must confirm that if the power voltage is the same to the voltage marked in the tool’s data plate. If the power voltage is higher than the appropriate voltage, the accidents will be resulted to the operators, and at the same time, the tool will be destroyed. Therefore, if the power voltage has not been confirmed, then you shall never plug in arbitrarily. On the contrary, when the power voltage is lower than the required voltage, the motor will be damaged.

Symbols used in the manual

Following symbols are used in the operation manual, please remember their meanings. Correct interpretation of the symbols will allow correct and safe use of the power tool.

Power tool designation

• The power tool is intended for dry cutting, grinding and sanding of metals (and other materials).
• The area of the tool application can be expanded due to use of additional accessories.
• There is a possibility of a stationary installation of the power tool by use of some special accessories.

Power tool components

1. Reducer
2. Spindle lock
3. Ventilation slots
4. Protective casing
5. Additional handle
6. On / off switch
7. Body
8. Flange wrench *
9. Mounting lug
10. Casing screw
11. Spindle
12. Flange
13. Disc *
14. Clamping nut
15. Speed selector thumbwheel

* Optional extra
Not all of the accessories illustrated or described are included as standard delivery.

Installation and regulation of power tool elements
Before carrying out any works on the power tool it must be disconnected from the mains.

• Do not draw up the fastening elements too tight to avoid damaging the thread.
• Mounting / dismounting / setting-up of some elements is the same for all power tool models, in this case specific models are not indicated in the illustration.

Additional handle (see fig. 1)
Always use the additional handle 5 when operating. Additional handle 5 may be positioned as deemed comfortable by the user.

• Unscrew additional handle 5 as shown on fig. 1.
• Screw additional handle 5 into another threaded opening.

Protective casing
Always use protective casing 4 when applying cutting and grinding discs. Operation of the aforementioned accessories without protective casing 4 is strictly forbidden. Protective casing 4 should always face the operator with its closed part.

Mounting / dismounting the protective casing (see fig. 2)

• With a screwdriver (not supplied with the power tool) release casing screw 10 and install protective casing 4 onto the spindle neck, watching that mounting lug 9 comes into the longitudinal groove of the spindle neck (see fig. 2).
• Turn protective casing 4 into the required position and tighten casing screw 10 with a screwdriver (not supplied with the power tool).
• When dismounting protective casing 4 repeat the aforementioned operations in reverse order.

Mounting / replacement of accessories
After mounting accessories of any kind, make a trial run before commencing operation – start the power tool and let it work in idle mode for not less than 30 seconds. The operation of accessories with radial or axial run-out and causing increased vibration of the power tool is strictly forbidden.

Wearing protective gloves is recom-mended for mounting / replacing accessories.

Mounting of cutting / grinding disc (see fig. 3)

• Install flange 12 onto spindle 11 (see fig. 3).
• Install one of the aforementioned accessories onto spindle 11.
• Press and hold spindle lock 2.
• Screw clamping nut 14 onto spindle 11 and tighten it with flange wrench 8. Attention: at mounting any accessories over 4 mm thick clamping nut 14 should be turned over (see fig. 3).
• Release spindle lock 2.
• Replacing the cutting / grinding disc (see fig. 3-4)
• Press and hold spindle lock 2.
• Release clamping nut 14 with flange wrench 8 (see fig. 4).
• Replace the accessory.
• Screw clamping nut 14 onto spindle 11 and tighten it with flange wrench 8. Attention: at mounting any accessories over 4 mm thick clamping nut 14 should be turned over (see fig. 3).
• Release spindle lock 2.

Initial operating of the power tool
Always use the correct supply voltage: the power supply voltage must match the information quoted on the power tool identification plate.

Switching the power tool on / off

• Switching on:
  Press the back part of on / off switch 6 and while holding it in this position, move on / off switch 6 forward. Press the front part of on / off switch 6 to fix it in pressed position.

• Switching off:
  Push the back part of on / off switch 6.

Design features of the power tool
Speed selector thumbwheel
[CT13502-115V, CT13502-125V]

• Using revolution adjustment switch 15, you may select the required spindle speed (also during operation).
• The required speed is dependent on the material and can be determined with practical trials.
• When operating your power tool at a low speed for a long time, it has to be cooled down for 3 minutes. To do it, set a maximum speed and leave your power tool to run idle.

Recommendations on the power tool operation
Cutting (see fig. 5-6)

• Install cutting disc as described below.
• Start the power tool, wait until the engine gains its maximum speed and only after that, smoothly bring cutting disc to the surface processed.
• Do not apply excessive pressure to the power tool, as it will not bring better results but it will overload the engine and wear out cutting disc faster.
• Move the power tool along the cutting line with moderate feed, not distorting and not making vibrating and bursting movements.
• Cutting should be implemented in the direction shown on fig. 5. When cutting in the reverse direction the danger of uncontrolled throwing of the power tool out to the side of the operator, which can lead to serious injuries appears.

Grinding (see fig. 7)
Grinding is applied for the rough and quick grinding of metals, the processing of welding seams, etc. Select the type of grinding disc depending on the work, which you are going to implement.

• Install grinding disc as described above.
• Start the power tool, wait until the engine gains its maximum speed and only after that smoothly bring grinding disc to the surface processed.
• Holding the power tool at an angle of 10° to 15° relating to the surface processed (see fig. 7) is recommended. If this angle is less than recommended, it will make controlling the power tool more difficult. If this angle is more than recommended, the processing quality will decrease and grooves will be left on the billet surface.
• Make alternate-reciprocal movements applying moderate pressure to the power tool. Excessive pressure will not bring better results but it will overload the engine and create the danger of destruction of grinding disc, which can cause severe injuries.

Power tool maintenance / preventive measures
Before carrying out any works on the power tool it must be disconnected from the mains.

Cleaning of the power tool
An indispensable condition for a safe long-term exploitation of the power tool is to keep it clean. During the long treatment of metal, current-conducting dust can be accumulated inside the power tool. Regularly flush the power tool with compressed air thought the ventilation slots 3.

After-sales service and application service
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. Information about service centers, parts diagrams and information about spare parts can also be found under: www.crown-tools.com.

Transportation of the power tools

• Categorically not to drop any mechanical impact on the packaging during transport.
• When unloading / loading is not allowed to use any kind of technology that works on the principle of clamping packaging.

Environmental protection

• Recycle raw materials instead of disposing as waste.
• Power tool, accessories and packaging should be sorted for environment-friendly recycling. The plastic components are labelled for categorized recycling.
• These instructions are printed on recycled paper manufactured without chlorine.

The manufacturer reserves the possibility to introduce changes.

Merit Link International
AG P.O. Box 641, CH-6855 Stabio Switzerland www.meritlink.com

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