HiKOKI H 90SG Demolition Hammer Instruction Manual

Demolition Hammer
H 90SG

Keep for future reference
Handling instructions

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.

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.
   f) 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.

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 or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
   b) 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.
   c) 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.
   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 dust collection 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, 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.

CAUTION
Keep children and infirm persons away.
When not in use, tools should be stored out of reach of children and infirm persons.

DEMOLITION HAMMER SAFETY WARNINGS

1. Wear ear protections
   Exposure to noise can cause hearing loss.

2. Use auxiliary handle(s), if supplied with the tool.
   Loss of control can cause personal injury.

3. Hold power tool by insulated gripping surfaces, 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.

ADDITIONAL SAFETY WARNINGS

1. Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate.
2. Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle while the power switch is in the ON position, the power tool will start operating immediately, which could cause a serious accident.
3. When the work area is removed from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.
4. RCD The use of a residual current device with a rated residual current of 30 mA or less at all times is recommended.
5. Do not touch the bit during or immediately after operation. The bit becomes very hot during operation and could cause serious burns.
6. Before starting to break, chip or drill into a wall, floor or ceiling, thoroughly confirm that such items as electric cables or conduits are not buried inside.
7. Wear a mask when turning your head upward.
8. Properly set the bit holder.
9. At the start of work, confirm screw tightening.
10. When working at a highly elevated location, pay attention to articles and persons below.
11. Wear protective shoes to protect your feet.

SYMBOLS

WARNING
The following show symbols used for the machine. Be sure that you understand their meaning before use.

| To reduce the risk of injury, user must
read instruction manual.| n| Full-load speed
---|---|---|---
V| Rated voltage| –S/–S| Running Time / Down Time
A| Current| —/min| revolutions per minute
W| Watt| | Class 11 tool

NAME OF PARTS

SPECIFICATIONS

STANDARD ACCESSORIES

In addition to the main unit (1 unit), the package contains the accessories listed in the below.

Table 1

APPLICATIONS

Demolishing concrete, chiseling off concrete, grooving, bar cutting.
Application examples:
Installation of piping and wiring, sanitary facility installation, machinery installation, water supply, and drainage work, interior jobs, harbor facilities, and other civil engineering works.

PRIOR TO OPERATION

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

2. Power switch
   Ensure that the power switch is in the OFF position. If the plug is connected to a receptacle while the power switch is in the ON position, the power tool will start operating immediately, which could cause a serious accident.

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

4. Check the receptacle
   If the receptacle loosely accepts the plug, the receptacle must be repaired. Contact the nearest authorized service center for repair service. If such a faulty receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Confirming condition of the environment
   Confirm that the work site is placed under neat, clean conditions conforming to prescribed precautions.

6. Attaching the side handle
   WARNING
   Be sure to switch power OFF and disconnect the plug from the receptacle.
   Attach the side handle to the unit using the hexagon bar wrench and hexagon socket hd. bolt M6 x 4. Make sure the convex portion of the A-side is positioned towards the nut. (Fig.2)
   

7. Installing an accessory, such as a bull point, a cutter, etc.,

WARNING
Be sure to switch power OFF and disconnect the plug from the receptacle.

NOTE:
When using accessories such as bull points, cutters, etc., make sure to use the genuine parts designated by our company.

• It is possible to attach accessories such as bull points, cutters, etc., with any of the three types of shank bit shapes shown below. (Fig. 3)
  • Mounting air tool shank and standard hexagonal shank tools.
  (1) Clean, then smear the accessory shank portion with grease or machine oil.
  (2) Move the retainer to open position and seat the accessory, such as a bull point, a cutter, etc., in the hexagonal hole in the front cover ( See Fig. 4 ).
  (3) Clamp the accessory into place by bringing the retainer to the clamp position. To make sure that the accessory is properly mounted, pull on the accessory. ( Fig. 5 )

• Mounting standard hexagonal shanks and retaining groove shanks without collars.
  (1) Clean, then smear the accessory shank portion with grease or machine oil.
  (2) Move the retainer to position . Align the accessory shank portion so that its recessed portion is under clamp and seat the accessory such as a bull point, a cutter, etc., in the hexagonal hole in the front cover ( See Fig. 6 ).
  (3) Clamp the accessory into place by bringing the retainer to clamp position . To make sure that the accessory is properly mounted, pull on the accessory. ( Fig. 7 )

NOTE: When removing the accessory, such as a bull point, a cutter, etc., carry out the above procedures in reverse.

HOW TO USE THE DEMOLITION HAMMER

1. Switch operation
   To turn ON the switch, grasp the handle with the trigger switch.
   When you let go of the trigger switch, the switch turns OFF.

2. Demolition hammer operation
   (1) Pull the trigger switch after applying the tip of the bit to the crushing position.
   (2) Operate this demolition hammer by utilizing its own weight. The performance will not be better even if it is pressed or thrust forcibly against the work surface. Hold this demolition hammer with a force just sufficient to counteract the reaction. This demolition hammer is equipped with a spring cushion on the handle so that chipping vibration is not conveyed to the operator. Operate this demolition hammer without forcing the handle too strongly.

NOTE: Sometimes the power tool does not begin the striking stroke even when the motor rotates because oil has become thick. If the power tool is used at low temperatures or if it is used after a long idle time, this demolition hammer should be kept running in for about five minutes in order to warm it up.

CAUTION
After long time of use, the front cover becomes hot.
Therefore, be careful not to burn your hands.

MAINTENANCE AND INSPECTION

WARNING

Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.

1. Inspecting this demolition hammer Since use of a dull accessory, such as a bull point, a cutter, etc., will degrade efficiency and cause possible motor malfunction, sharpen or replace with a new one as soon as abrasion is noted.

2. Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately.
   WARNING
   Using this demolition hammer with loosen 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 retainer (Fig. 3 and 4)
   The retainer may become loose due to excessive use. Always, pay attention to its proper functioning to securely hold the accessory shank portion. If any wear and tear is found, bring this demolition hammer to an authorized service center for maintenance service.

5. Inspecting the carbon brushes (Fig. 10)
   The Motor employs carbon brushes which are consumable parts. When they become worn to or near the “wear limit”, it could result in motor trouble. When an auto-stop carbon brush is equipped, the motor will stop automatically. At that time, replace both carbon brushes with new ones which have the same carbon brush Numbers shown in the figure. CAUTION
   Using this Demolition Hammer with a carbon brush which is worn in excess of the wear limit will damage the motor.

6. Replacing carbon brushes (Fig. 11)
   Loosen the screws (Hexagon socket hd. hd. bolt M4×10 bolt M6 × 16), then remove the housing cover. Loosen the screws (Hexagon socket had.  bolt M4 × 10), then remove the cap covers (with cap rubber). After removing the brush caps, the carbon brushes can be removed. After replacing the carbon brushes, tighten the brush caps, then mount the cap covers securely.

7. Grease replacement
   This Demolition Hammer is of full air-tight construction to protect against dust and to prevent lubricant leakage.
   Therefore, this Demolition Hammer can be used without lubrication for long periods.
   Replace the grease as described below.
   • Grease Replacement Period After purchase, replace grease after every 6 months of usage. Ask for grease replacement at the nearest authorized Service Center.

8. Replacing supply cord If the replacement of the supply cord is necessary, this has to be done by the manufacturer of this agent in order to avoid a safety hazard.

CAUTION
In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

SELECTING ACCESSORIES

Koli Holdings Co., Ltd.
111
C99700221 M

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