CM5SB - Saw HITACHI - Free user manual and instructions

USER MANUAL CM5SB HITACHI

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

WARNING IMPROPER OR UNSAFE use of this power tool can result in death or serious bodily injury! This manual contains important information about product safety. Please read and understand this manual BEFORE operating the power tool. Please keep this manual available for other users and owners before they use the power tool. This manual should be stored in safe place. Model Cutter Modèle Scie à diamant Modelo Cortadora 00Cover_CM5SB_US 11/26/07, 15:001ÍNDICE Español Página Página

MOUNTING AND DISMOUNTING

Read and understand all of the safety precautions, warnings and operating instructions in the Instruction Manual before operating or maintaining this power tool. Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures. Basic safety precautions are outlined in the “SAFETY” section of this Instruction Manual and in the sections which contain the operation and maintenance instructions. Hazards that must be avoided to prevent bodily injury or machine damage are identified by WARNINGS on the power tool and in this Instruction Manual. NEVER use this power tool in a manner that has not been specifically recommended by HITACHI.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in death or serious injury. CAUTION indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury, or may cause machine damage. NOTE emphasizes essential information. SAFETY

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

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 of 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.

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 or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. 01Eng_CM5SB_US 11/26/07, 15:013English

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. 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 jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery 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 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. 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 intended could result in a hazardous situation.

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. –WARNING– To reduce the risk of injury, user must read instruction manual.

SPECIFIC SAFETY RULES AND SYMBOLS

1. Hold tools 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.

2. ALWAYS wear ear protections.

Exposure to noise can cause hearing loss.

3. NEVER touch moving parts.

NEVER place your hands, fingers or other body parts near the tool’s moving parts.

4. NEVER operate without all guards in place.

NEVER operate this tool without all guards or safety features in place and in proper working order. If maintenance or servicing requires the removal of a guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the tool.

Don’t force small tool or attachment to do the job of a heavy-duty tool. Don’t use tool for purpose not intended —for example— don’t use circular saw for cutting tree limbs or logs. 01Eng_CM5SB_US 11/26/07, 15:014English

6. NEVER use a power tool for applications other

than those specified. NEVER use a power tool for applications other than those specified in the Instruction Manual.

7. Handle tool correctly.

Operate the tool according to the instructions provided herein. Do not drop or throw the tool. NEVER allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.

8. Keep all screws, bolts and covers tightly in place.

Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.

9. Do not use power tools if the plastic housing or

handle is cracked. Cracks in the tool’s housing or handle can lead to electric shock. Such tools should not be used until repaired.

10. Blades and accessories must be securely mounted

to the tool. Prevent potential injuries to youself or others. Blades, cutting implements and accessories which have been mounted to the tool should be secure and tight.

11. Keep motor air vent clean.

The tool’s motor air vent must be kept clean so that air can freely flow at all times. Check for dust build-up frequently.

12. Operate power tools at the rated voltage.

Operate the power tool at voltages specified on its nameplate. If using the power tool at a higher voltage than the rated voltage, it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out.

13. NEVER use a tool which is defective or operating

abnormally. If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a Hitachi authorized service center.

14. NEVER leave tool running unattended. Turn power

off. Don’t leave tool until it comes to a complete stop.

15. Carefully handle power tools.

Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged.

16. Do not wipe plastic parts with solvent.

Solvents such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents. Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.

17. ALWAYS wear eye protection that meets the

requirement of the latest revision of ANSI Standard Z87.1.

18. ALWAYS wear a mask or respirator to protect

yourself from dust or potentially harmful particles generated during the operation.

19. Do NOT use any cutting tool other than a diamond

wheel. Use the diamond wheel specified in this manual.

20. Don't use it for cutting of metallic materials.

Diamond wheel may be broken or its service life may be remarkably reduced when it is used for cutting of metallic materials. Be sure not to use the wheel for cutting of metals.

21. Do not start the cutter while the diamond wheel

is in contact with the material.

22. Keep the motor interior free of water.

23. Prior to use, be sure to check the diamond wheel

in such details as crack, broken part, bent part and the like. Don't use a diamond wheel if any of the above defect is found on the wheel. Also confirm that no abnormality exists by actual test running.

24. Proceed with cutting operation when full speed

25. Do NOT apply excessive force.

26. When cutting concrete, tile, or stone, the

maximum cutting depth should be held to within 13/64”(5 mm).

27. Never lay down the cutter while the diamond

wheel is revolving. Also, do not stop the cutter with the diamond wheel forcibly depressed against the material.

28. Exercise care to position the cutter at a safe, stable

29. Take good care of the power tool and keep it clean.

ALL SAWS DANGER! a) Keep hands away from cutting area and do not reach underneath the workpiece. Contact with the wheel will result in injury. b) Adjust the cutting depth to the thickness of the workpiece. c) Never hold piece being cut in your hands or across your leg. Secure the workpiece to a stable platform. 01Eng_CM5SB_US 11/26/07, 15:015English

It is important to support the work properly to minimize body exposure, wheel binding, or loss of control. d) Never use damaged or incorrect wheel washers or wheel nut. The wheel washers and wheel nut were specially designed for your saw, for optimum performance and safety of operation. Causes and operator prevention of kickback: – kickback is a sudden reaction to a pinched, bound or misaligned wheel, causing an uncontrolled saw to lift up and out of the workpiece toward the operator. – when the wheel is pinched or bound tightly by the kerf closing down, the wheel stalls and the motor reaction drives the unit rapidly back toward the operator. Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below: a) Maintain a firm housing and position your arms to resist kickback forces. Position your body either side of the wheel, but not in line with the wheel. Kickback could cause the saw to jump backwards, but kickback forces can be controlled by the operator, if proper precautions are taken. b) When wheel is binding, or when interrupting a cut for any reason, turn off the switch and hold the saw motionless in the material until the wheel comes to a complete stop. Never attempt to remove the saw from the work or pull the saw backward while the wheel is in motion or kickback may occur. Investigate and take corrective actions to eliminate the cause of wheel binding. c) When restarting a saw in the workpiece, centre the wheel in the kerf and check that wheel segments are not engaged into the material. If wheel is binding, it may walk up or kickback from the workpiece as the saw is restarted. d) Support large panels to minimize the risk of wheel pinching and kickback. Large panels tend to sag under their own weight. Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel. e) Do not use dull or damaged wheels. Unsharpened or improperly set wheels produce narrow kerf causing excessive friction, wheel binding and kickback. f) Wheel depth adjusting locking wing nut must be tight and secure before making cut. If wheel adjustment shifts while cutting, it may cause binding and kickback.

DOUBLE INSULATION FOR SAFER

OPERATION To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol “ ” or the words “Double insulation” appear on the power tool or on the nameplate. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments. To keep the double insulation system effective, follow these precautions:

Only HITACHI AUTHORIZED SERVICE CENTER should disassemble or assemble this power tool, and only genuine HITACHI replacement parts should be installed.

Clean the exterior of the power tool only with a soft cloth moistened with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve.

SAVE THESE INSTRUCTIONS

Diamond wheel Push button Housing Tail cover Side handle Switch Fig. 1 Dust collection cover FUNCTIONAL DESCRIPTION NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. NEVER operate, or attempt any maintenance on the tool unless you have first read and understood all safey instructions contained in this manual. Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool.

Cutting or scribing concrete

Cutting or scribing tile

Cutting or scribing stone

Cutting or scribing roof tile

Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate.

Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury.

When the work area is far away from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

Damaged cord must be replaced or repaired.

4. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs. If such a fautly receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Checking and installing the diamond wheel

Check the diamond wheel is a specified one and is not cracked, broken or bent. Check the diamond wheel is installed securely. For installation, refer to “Installing/removing diamond wheel”.

6. Fitting and adjusting the dust collection cover

(Fig. 2) The dust collection cover is a protective device to prevent injury should the diamond wheel shatter during operation. Ensure that the cover is properly fitted and fastened before commencing cutting operation. By slightly loosening the setting screw, the dust collection cover can be turned and set at any desired angle for maximum operational effectiveness. Ensure that the setting screw is thoroughly tightened after adjusting the dust collection cover.

7. Confirm the spindle lock mechanism

Confirm that the spindle lock is disengaged by pushing push button two or three times before switching the power tool on (See Fig. 1).

8. Cutting depth adjustment (Fig. 3)

Lowering the wing nut will loosen and raising it will tighten. Loosening the wing nut and moving the slide guide will allow adjustment of the cutting depth. CAUTION:

Leaving the wing nut loosened may result in injury. Securely tighten the wing nut after adjusting the cutting depth.

When the cutting depth exceeds 13/64” (5mm), concrete, and so on must be cut in two steps. Never try to cut in one step; otherwise, the motor is liable to be overloaded and damaged may result. Also, cutting efficiently will be lower in such an instance. Screw Dust collection cover Fig. 2 Wing nut Slide guide Fig. 3 01Eng_CM5SB_US 11/26/07, 15:018English

MOUNTING AND DISMOUNTING THE

Be sure to disconnect the attachment plug from the power receptacle to avoid serious trouble.

1. Mounting the diamond wheel

(1) Remove the cover (A). (2) Thoroughly remove dust accumulated on the spindle and washers. (3) As shown in Fig. 5. the concave portions of wheel washer and wheel nut must be on the diamond wheel side. (4) Thoroughly clamp the wheel nut.

2. Dismounting the diamond wheel

A diamond wheel for mounting on this equipment must have 7/8” (22.2mm) internal diameter. No other sized diamond wheel should be used.

(1) Place this tool on the material to be cut and align the cutting line and the diamond wheel. The cutting can be performed smoothly if you cut straight ahead on the cutting line in the initial cut. (2) Turn on the switch when the diamond wheel is not touching the material to be cut.

INSTALLING DUST COLLECTION HOSE

When cutting a material which generates cutting dust, use the dust collection hose as follows: (1) Remove the rubber cap and install the accessory adapter. (Fig. 4) (2) Install the dust collector hose for the power tool in the accessory adapter. (Fig. 4) CAUTION:

2. Precautions immediately after finishing operation

After switching off the machine, do not put it down until the depressed center wheel has come to a complete stop. Apart from avoiding serious accidents, this precaution will reduce the amount of dust and swarf sucked into the machine. 01Eng_CM5SB_US 11/26/07, 15:019English

Always check the diamond wheel before starting work. Never use a diamond wheel which is cracked, broken or bent.

Do not apply water or coolant to the diamond wheel.

Start cutting only when diamond wheel reaches its maximum speed.

If the diamond wheel seizes or there is any abnormal noise, immediately turn the power off.

Never use the diamond wheel to cut zigzag or curved lines. Never use the side surface of the diamond wheel. Never use to perform inclination cutting.

Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection. Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting serious injury.

1. Inspecting the diamond wheel

Since use of a dull diamond wheel will cause motor malfunctioning and degraded efficiently, replace with a new one without delay when abrasion is noted.

2. Inspecting the screws

Regularly inspect all screws and ensure that they are fully tightened. Should any of the screws be loosened, retighten them immediately.

Using this cutter with loosened screws is extremely dangerous.

3. Maintenance of the motor

The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4. Inspecting the carbon brushes (Fig. 7)

The motor employs carbon brushes which are consumable parts. Replace the carbon brush with a new one when it becomes worn to its wear limit. Always keep carbon brushes clean and ensure that they slide freely within the brush holders. Fig. 7 Wear limit 0.24" (6mm) No. of carbon brush 0.67" (17mm)

Using this cutter with a carbon brush which is worn in excess of the wear limit will damage the motor. NOTE: Use HITACHI carbon brush No. 88 indicated in Fig. 7.

Replacing carbon brushes: <Disassembly> (1) Loosen the D4 tapping screw retaining the tail cover and remove the tail cover. (2) Use the auxiliary hexagonal wrench or small screwdriver to pull up the edge of the spring that is holding down the carbon brush. Remove the edge of the spring toward the outside of the brush holder.

If excessive force is applied to the diamond wheel to make it align with the cutting line during cutting, this might not only overload the motor and cause burn damage but may also overheat the diamond wheel and shorten the service life.

Take care not to allow the power cord to come into contact with the diamond wheel during operation.

When the work is completed, turn the power off and disconnect the power plug from the receptacle. 01Eng_CM5SB_US 11/26/07, 15:0110English

(3) Remove the end of the pig-tail on the carbon brush from the terminal section of brush holder and then remove the carbon brush from the brush holder. <Assembly> (1) Insert the end of the pig-tail of the carbon brush in the terminal section of brush holder. (2) Insert the carbon brush in the brush holder. (3) Use the auxiliary hexagonal wrench or small screwdriver to return the edge of the spring to the head of the carbon brush. (4) Mount the tail cover and tighten the D4 tapping screw. Carbon brush Brush holder Spring Fig. 8

5. Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.

6. Service parts list

CAUTION: Repair, modification and inspection of Hitachi Power Tools must be carried out by an Hitachi Authorized Service Center. This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed. MODIFICATIONS: Hitachi Power Tools are constantly being improved and modified to incorporate the latest technological advancements. Accordingly, some parts (i.e. code numbers and/ or design) may be changed without prior notice. ACCESSORIES

ALWAYS use Only authorized HITACHI replacement parts and accessories. NEVER use replacement parts or accessories which are not intended for use with this tool. Contact HITACHI if you are not sure whether it is safe to use a particular replacement part or accessory with your tool. The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage. NOTE: Accessories are subject to change without any obligation on the part of the HITACHI. STANDARD ACCESSORIES

. usado D: Observaciones 04Back_CM5SB_US 11/26/07, 15:033435 04Back_CM5SB_US 11/26/07, 15:0335WARNING: 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, and ● 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, such as those dust masks that are specially designed to filter out microscopic particles.

Code No. C99167362 Printed in Malaysia 04Back_CM5SB_US 11/26/07, 15:0336