BOSCH AHS 48-20 LI Hedge Trimmer Instruction Manual

June 5, 2024
Bosch

BOSCH AHS 48-20 LI Hedge Trimmer

BOSCH-AHS-48-20-LI-Hedge-Trimmer-PRODUCT

Safety Notes

Explanation of symbols

  • Read instruction manual.
  • Do not use the machine in the rain or leave it outdoors when it is raining.
  • Remove battery before adjusting or cleaning, and
  • before leaving the machine unattended for any period.

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 mainsoperated (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 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 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 awayfrom heat, oil, sharp edges and 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.

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 and 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 powertool 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, 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.

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 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 hazardous situation.

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 designated 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.

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.

Hedge trimmer safety warnings

  • Keep all parts of the body away from the cutter blade. Do not remove cut material or hold material to be cut when blades are moving. Make sure the switch is off when clearing jammed material. A moment of inattention while operating the hedge trimmer may result in serious personal injury.
  • Carry the hedge trimmer by the handle with the cutter blade stopped. When transporting or storing the hedge trimmer always fit the cutting device cover. Proper handling of the hedge trimmer will reduce possible personal injury from the cutter blades.
  • Hold power tool by insulated gripping surfaces only, because the cutter blade may contact hidden wiring. Cutter blades contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
  • Always ensure all handles and guards are fitted when using the machine. Never attempt to use an incomplete machine or one fitted with an unauthorized modification.
  • Always lubricate the cutting blade with protective spray before use.

Additional safety warnings

  • This tool is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

  • When working with the machine, always hold it firmly
    with both hands and provide for a secure stance. The power tool is guided more secure with both hands.

  • Wait until the machine has come to a standstill before placing it down.

  • Other persons and animals should remain at a distance of 3metres or more when the machine is being used. The operator is responsible for third persons in the working area.

  • Never grasp the blade of the hedgecutter.

  • Children or persons unfamiliar with these instructions must not operate the hedgecutter. Local regulations may restrict the age of the operator.

  • Never cut a hedge while people, especially children or pets, are nearby.

  • The operator or user is responsible for accidents or hazards occurring to other people or their property.
    Do not operate the hedgecutter when barefoot or wearing open sandals, always wear substantial footwear and long trousers. The use of sturdy gloves, non- skid footwear and safety glasses is recommended. Do not wear loose clothing or jewellery which can be caught in moving parts.

  • Thoroughly inspect the area where the hedge trimmer is to be used and remove all wires and other foreign objects.

  • Prior to operation, check cutter blades, blade bolts and cutter assembly for wear or damage. Do not operate with adamaged or excessively worn cutting device.

  • Know how to stop the hedge trimmer quickly in an emergency.

  • Cut a hedge only in daylight or in good artificial light.

  • Never operate the hedgecutter with defective guards or without the guard in place.

  • Always ensure all handles and guards supplied are fitted when using the hedgecutter. Never attempt to use an incomplete hedgecutter or one with an unauthorised modification.

  • Never hold the hedgecutter by the guard.

  • While operating the hedgecutter always be sure of a safe and secure operating position at all times, especially when using steps or a ladder.

  • Always be aware of your surroundings and stay alert for possible hazards that you may not hear whilst operating the hedgecutter.

  • Keep all nuts, bolts and screws tight to ensure that the hedgecutter is always in a safe working condition.

  • The hedgecutter should be stored in a dry, high or locked up place out of the reach of children.

  • Replace worn or damaged parts for safety.

  • Do not attempt to repair the machine unless you are qualified to do so.

  • Ensure replacement parts fitted are Bosch approved.

Recommendations for Optimal Handling of the Battery

  • Ensure the switch is in the off position before inserting battery pack. Inserting the battery pack into machines that have the switch on can cause accidents.
  • Use only Bosch battery packs intended specifically for the machine. Use of any other battery packs may create a risk of injury and fire.
  • Do not open the battery. Danger of short-circuiting. Protect the battery against heat, e. g., against continuous intense sunlight, fire, water, and moisture. Danger of explosion.
  • In case of damage and improper use of the battery, vapours may be emitted. Ventilate the area and seek medical help in case of complaints. The vapours can irritate the respiratory system.
  • Use the battery only in conjunction with your Bosch product. This measure alone protects the battery against dangerous overload.
  • The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit can occur and the battery can burn, smoke, explode or overheat.
  • Do not short-circuit the battery. There is danger of explo-sion.
  • Protect the battery against moisture and water.
  • Store the battery only within a temperature range between
  • 20 °C and 50 °C. As an example, do not leave the battery in the car in summer.
  • Occasionally clean the venting slots of the battery using a soft, clean and dry brush.
Safety Warnings for Battery Chargers

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 these instructions.
Use the battery charger only when you fully understand and can perform all functions without limitation, or have received appropriate instructions.

  • This charger is not intended for use by children and persons with physical, sensory or mental limitations or a lack of experience or knowledge. This charger can be used by children aged 8 and above and by persons who have physical, sensory or mental limitations or a lack of experience or knowledge if a person responsible for their safety su-pervises them or has instructed them in the safe operation of the charger and they understand the associated dangers. Otherwise, there is a danger of operating errors and injuries.
  • Supervise children during use, cleaning and maintenance. This will ensure that children do not play with the charger.
  • Only charge Bosch lithium-ion batteries with a capacity of 1.5 Ah or more (5 battery cells or more). The battery voltage must match the battery charging voltage of the charger. Do not charge non-re-chargeable batteries. Otherwise there is danger of fire and explosion.
  • Only charge Bosch lithium-ion batteries. The battery voltage must match the battery charging voltage of the charger. Otherwise there is danger of fire and explosion.
  • Keep the battery charger clean. Contamination can lead to danger of an electric shock.
  • Before each use, check the battery charger, cable and plug. If damage is detected, do not use the battery charger. Never open the battery charger yourself. Have repairs performed only by a qualified technician and only using original spare parts. Damaged battery chargers, cables and plugs increase the risk of an electric shock.
  • Do not operate the battery charger on easily inflammable surfaces (e. g., paper, textiles, etc.) or surroundings. The heating of the battery charger during the charg-ing process can pose a fire hazard.
  • Do not cover the ventilation slots of the battery charger. Otherwise, the battery charger can overheat and no longer operate properly.

Products sold in GB only:
Your product is fitted with a BS 1363/A approved electric plug with internal fuse (ASTA approved to BS 1362). If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an authorised customer service agent. The replacement plug should have the same fuse rating as the original plug. The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into a mains socket elsewhere.

Maintenance

  • Remove battery before adjusting or cleaning, and before leaving the machine unattended for any period.Always wear gardening gloves when handling or working near the sharp blades.
  • Examine the machine and replace worn or damaged parts for safety.
  • Always lubricate the cutting blade with protective spray before storage.
  • Keep all nuts, bolts and screws tight to be sure that the machine is in safe working condition.
  • Ensure replacement parts fitted are Bosch approved.
  • Always lubricate the cutting blade with protective spray before use.

Symbols
The following symbols are important for reading and understanding the operating instructions. Please take note of the symbols and their meaning. The correct interpretation of the symbols will help you to use the garden product in a better and safer manner.

Intended Use
The machine is intended for cutting and trimming hedges and bushes in domestic use.

Technical Data

Article number 3 600 H49 F.. 3 600 H49 F.. 3 600 H49 G.. 3 600 H49 G..
No-load stroke rate min–1 2600 2600 2600 2600
Blade length mm 480 500 530 550
Tooth opening mm 20 20 20 20
Weight according to EPTA-Procedure 01/2003

kg

|

2.5

|

2.5

|

2.6

|

2.6

Serial number| See serial number (type plate) on the machine
Battery| | Li- Ion| Li- Ion| Li- Ion| Li- Ion
Article number| | | | |
– 1.5 Ah| 2 607 336 207| 2 607 336 207| 2 607 336 207| 2 607 336 207
– 2.0 Ah| 2 607 336 921| 2 607 336 921| 2 607 336 921| 2 607 336 921
– 2.5 Ah| 2 607 337 199| 2 607 337 199| 2 607 337 199| 2 607 337 199
Rated voltage| V=| 18| 18| 18| 18
Capacity| | | | |
– 2 607 336 207| Ah| 1.5| 1.5| 1.5| 1.5
– 2 607 336 921| Ah| 2.0| 2.0| 2.0| 2.0
– 2 607 337 199| Ah| 2.5| 2.5| 2.5| 2.5
Number of battery cells| | | | |
– 2 607 336 207| 5| 5| 5| 5
– 2 607 336 921| 5| 5| 5| 5
– 2 607 337 199| 5| 5| 5| 5
Battery Charger| | AL 1830 CV| AL 1830 CV| AL 1830 CV| AL 1830 CV
Article number| EU| 2 607 225 965| 2 607 225 965| 2 607 225 965| 2 607 225 965
| UK| 2 607 225 967| 2 607 225 967| 2 607 225 967| 2 607 225 967
| AU| 2 607 225 969| 2 607 225 969| 2 607 225 969| 2 607 225 969
Charging current| A| 3.0| 3.0| 3.0| 3.0
Allowable charging temperature range|

°C

|

0– 45

|

0– 45

|

0– 45

|

0– 45

Charging period (battery discharged)| | | | |
– 1.5 Ah

– 2.0 Ah

– 2.5 Ah

| min min min| 33

45

60

| 33

45

60

| 33

45

60

| 33

45

60

Weight according to EPTA-Procedure 01/2003|

kg

|

0.4

|

0.4

|

0.4

|

0.4

Protection class| | / II| / II| / II| / II

Noise/Vibration Information

Sound emission values determined according to EN 60745-2-15. Typically the A-weighted noise levels of the product are: Sound pressure level 71 dB(A); sound power level 91 dB(A). Uncertainty K=1 dB. Wear hearing protection! Vibration total values ah (triax vector sum) and uncertainty K determined according to EN 60745-2-15: ah=2.5 m/s2, K=1.5 m/s2. The vibration level given in this information sheet has been measured in accordance with a standardized test given in EN 60745 and may be used to compare one tool with another. It may be used for a preliminary assessment of exposure. The declared vibration emission level represents the main applications of the tool. However if the tool is used for different applications, with different accessories or insertion tools or is poorly maintained, the vibration emission may differ. This may significantly increase the exposure level over the total working period. An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or when it is running but not actually doing the job. This may significantly reduce the exposure level over the total working period. Identify additional safety measures to protect the operator from the effects of vibration such as: maintain the tool and the accessories, keep the hands warm, organisation of work patterns.

Declaration of Conformity
We declare under our sole responsibility that the product de-scribed under “Technical data” is in conformity with all relevant provisions of the directives until 19 April 2016: 2006/95/EC, from 20 April 2016 on: 2014/35/EU, 2011/65/EU, until 19 April 2016: 2004/108/EC, from 20 April 2016 on: 2014/30/EU, 2006/42/EC, 2000/14/EC including their amendments and complies with the following standards: EN 60745-1, EN 60745-2-15 (battery powered product), EN 60335-1, EN 60335-2-29 (battery charger). 2000/14/EC: Guaranteed sound power level 92 dB(A). Conformity assessment procedure according to Annex V. Equipment category: 25 Technical file (2006/42/EC, 2000/14/EC) at: Bosch Lawn and Garden Ltd., PT-HG/ENS-PA2, Stowmarket, Suffolk IP14 1EY, England

Mounting and Operation

Delivery Scope 1 244
Inserting the Battery 2 244
Starting 3 245
Stopping 3 245
Working Advice 4 246
Blade Maintenance 5 247
Storage and Transport 5 247
Selecting Accessories 6 247
Initial Operation

For Your Safety

  • Warning : Switch off and remove battery from machine before adjusting or cleaning.
  • The blades continue to move for a fraction of a second after the hedgecutter is switched off.
  • Do not touch the moving blades.
  • Do not activate switches until battery is fully attached.

Battery Charging

  • Do not use other battery chargers. The supplied battery charger is designed for the Lithium-Ion battery in your garden product.
  • Observe the mains voltage! The voltage of the power supply must correspond with the data given on the nameplate of the battery charger. Battery chargers marked with 230 V can also be operated with 220 V.

The battery is equipped with temperature monitoring that allows charging only in the temperature range between 0 °C and 45 °C. In this manner, a high battery service life is achieved.

Note : The battery supplied is partially charged. To ensure full capacity of the battery, completely charge the battery in the battery charger before using your power tool for the first time. The lithium-ion battery can be charged at any time without reducing its service life. Interrupting the charging procedure does not damage the battery. The “Electronic Cell Protection (ECP)” protects the lithium-ion battery against deep discharging. When the battery is run down or discharged, the garden product is shut off by means of a protective circuit: The garden product no longer operates.

Charging Procedure
The charging procedure starts as soon as the mains plug of the battery charger is plugged into the socket outlet and the battery is inserted into the charging compartment .Due to the intelligent charging method, the charging condition of the battery is automatically detected and the battery is charged with the optimum charging current, depending on battery temperature and voltage. This gives longer life to the battery and always leaves it fully charged when kept in the charger for storage.

Meaning of the Indication Elements
(Fast) Flashing of the Green Battery Charge Indicator The rapid-charging procedure is indicated by fast flashing of the green battery charge indicator

Note : The rapid-charging procedure is only possible when the battery temperature is within the allowable charging temperature range, see section “Technical Data”.

(Slow) Flashing of the Green Battery Charge Indicator
When the charging condition of the battery is 80%, the green battery charge indicator flashes slowly. The battery can be removed for immediate use.

Continuous Lighting of the Green Battery Charge Indicator
Continuous lighting of the green battery charge indicator indicates that the battery is fully charged. When the battery is not inserted, continuous lighting of the battery charge indicator indicates that the mains plug is inserted in the socket and that the battery charger is ready for operation.

Continuous Lighting of the Red Battery Charge Indicator
Continuous lighting of the red battery charge indicator indicates that the temperature of the battery is not within the allowable charging temperature range, see section “Technical Data”. As soon as the allowable charging temperature range is reached, the battery charger automatically switches to rapid charging.

Flashing Red Battery Charge Indicator
A flashing red battery charge indicator indicates a different malfunction of the charging procedure, see section “Troubleshooting

Charging Advice
With continuous or several repetitive charging cycles without interruption, the charger can warm up. This is not meaningfuland does not indicate a technical defect of the battery charger. A significantly reduced working period after charging indicates that the battery is used and must be replaced.

Troubleshooting

The following chart lists problem symptoms, possible causes and corrective action, if your garden product does not operate properly. If these do not identify and correct the problem, contact your service agent.

Warning : Switch off and remove the battery prior to any troubleshooting.

Problem Possible Cause Corrective Action
Hedgecutter does not oper- Battery discharged Recharge battery; also see

“Battery Charging”
ate| Safety switch not activated correctly| see “Initial Operation”
Hedgecutter operates in-| Internal wiring of machine damaged| Contact Service Agent
termittently| On/Off switch defective| Contact Service Agent
| Motor reverses repeatedly then stops after 3 s| see “Working Advice” (Anti Blocking)
Motor runs but blades remain stationary| Internal fault| Contact Service Agent
Cutting blade hot| Cutting blade blunt| Have blade sharpened
| Cutting blade has dents| Have blade inspected/overhauled
| Too much friction, due to lack of lubricant| Apply lubricant spray (1 609 200 399)
Blade will not move| Battery discharged| Recharge battery; also see “Battery Charging”
| Machine defective| Contact Service Agent
Excessive vibrations/noise| Machine defective| Contact Service Agent
Cutting time per battery| Too much friction, due to lack of lubricant| Apply lubricant spray
charge too low| Blade needs cleaning| Clean blade
| Poor cutting technique| see “Working Advice”
| Battery not fully charged| Recharge battery; also see “Battery Charging”
Flashing red battery charge| Battery not (properly) inserted| Properly insert battery into battery charger
indicator

No charging procedure possible

| Battery contacts contaminated| Clean the battery contacts (e.g. by inserting and removing the battery several times) or replace the battery
| Battery pack defective| Replace the battery

After-sales Service and Application Service

www.bosch-garden.com In all correspondence and spare parts orders, please always include the 10-digit article number given on the type plate of the garden product.Great Britain Robert Bosch Ltd. (B.S.C.) P.O. Box 98 Broadwater Park North Orbital Road Denham Uxbridge UB 9 5HJ At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair. Tel. Service: (0344) 7360109 E-Mail: boschservicecentre@bosch.com

Transport
The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements. The user can transport the batteries by road without further requirements.When being transported by third parties (e.g.: air transport or forwarding agency), special requirements on packaging and labelling must be observed. For preparation of the item being shipped, consulting an expert for hazardous material is required.Dispatch batteries only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe possibly more detailed national regulations

Disposal
Do not dispose of garden products, battery chargers and batteries/ rechargeable batteries into household waste!

Only for EC countries:
According to the European law 2012/19/EU, electrical and electronic equipments that are no longer usable, and according to the European law 2006/66/EC, defective or used battery packs/batteries, must be collected separately and disposed of in an environmentally correct manner

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