Bosch Power Tools PS31-2AL1A, PS31B, PS31-2AL, PS31-2A, PS31BN User Manual
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IMPORTANT: |
IMPORTANT : |
IMPORTANTE: |
Read Before Using |
Lire avant usage |
Leer antes de usar |
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Operating/Safety Instructions 
Consignes de fonctionnement/sécurité
Instrucciones de funcionamiento y seguridad
PS31
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Call Toll Free for |
Pour obtenir des informations |
Llame gratis para |
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Consumer Information |
et les adresses de nos centres |
obtener información |
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& Service Locations |
de service après-vente, |
para el consumidor y |
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appelez ce numéro gratuit |
ubicaciones de servicio |
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1-877-BOSCH99 (1-877-267-2499) www.boschtools.com |
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For English Version |
Version française |
Versión en español |
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See page 2 |
Voir page 15 |
Ver la página 28 |
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BM 2610007872 12/09:BM 2610007872 12-09 12/17/09 7:27 AM Page 2
General Power Tool Safety Warnings
! WARNING Read all safety warnings and 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 all of 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 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 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 the power tool in damp locations is unavoidable use a Ground Fault Circuit Interrupter (GFCI) protected supply. Use of an GFCI reduce the risk of electric shock.
Personal safety
Stay alert, watch what you are doing and use common sense when operating a
power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and / or battery pack, picking up or carrying the tool.
Carrying power tools with your finger on the switch or 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 jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry 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 dustrelated 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.
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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 tools 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.
Safety Rules for Cordless Drill/Drivers
Hold power tools by insulated gripping surfaces when performing an operation where the cutting tools may contact hidden wiring. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.
Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to loss of control.
Do not drill, fasten or break into existing walls or other blind areas where electrical wiring may exist. If this situation is unavoidable, disconnect all fuses or circuit breakers feeding this worksite.
Always hold the tool with both hands. If the bit jams two hands will give you
maximum control over torque reaction or kickback.
Always wear safety goggles or eye protection when using this tool. Use a dust mask or respirator for applications which generate dust.
Secure the material being drilled. Never hold it in your hand or across legs.
Unstable support can cause the drill bit to bind causing loss of control and injury.
Disconnect battery pack from tool or place the switch in the locked or off position before making any assembly, adjustments or changing accessories. Such preventive safety measures reduce the risk of starting the tool accidentally.
Position yourself to avoid being caught between the tool or side handle and walls
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or posts. Should the bit become bound or jammed in the work, the reaction torque of the tool could crush your hand or leg.
If the bit becomes bound in the workpiece, release the trigger immediately, reverse the direction of rotation and slowly squeeze the trigger to back out the bit. Be ready for a strong reaction torque. The drill body will tend to twist in the opposite direction as the drill bit is rotating.
Do not grasp the tool or place your hands too close to the spinning chuck or drill bit. Your hand may be lacerated.
When installing a bit, insert the shank of the bit well within the chuck. If the bit is not inserted deep enough, the grip of the chuck over the bit is reduced and the loss of control is increased. After bit insertion, pull on bit to ensure it is locked.
Do not use dull or damaged bits and accessories. Dull or damaged bits have a greater tendency to bind in the workpiece.
When removing the bit from the tool avoid contact with skin and use proper protective gloves when grasping the bit or accessory. Accessories may be hot after prolonged use.
Check to see that keys and adjusting wrenches are removed from the drill before switching the tool "ON". Keys or wrenches can fly away at high velocity striking you or a bystander.
Do not run the drill while carrying it at your side. A spinning drill bit could become entangled with clothing and injury may result.
Some dust created by power sanding, sawing, grinding, drilling, and other construction
activities contains chemicals known 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 chemicallytreated 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.
Battery/Charger
Before using battery charger, read all instructions and cautionary markings on
(1) battery charger, (2) battery pack, and (3) product using battery.
Use only the charger which accompanied your product or direct replacement as listed in the catalog or this manual. Do not substitute any other charger. Use only Bosch approved chargers with your product. See Functional Description and Specifications.
Do not disassemble charger or operate the charger if it has received a sharp blow, been dropped or otherwise damaged in any way. Replace damaged cord or plugs immediately. Incorrect reassembly or damage may result in electric shock or fire.
Do not recharge battery in damp or wet environment. Do not expose charger to rain or snow. If battery case is cracked or
otherwise damaged, do not insert into charger. Battery short or fire may result.
Charge only Bosch approved rechargeable batteries. See Functional Description and Specifications. Other types of batteries may burst causing personal injury and damage.
Charge battery pack in temperatures above +32 degrees F (0 degrees C) and below +113 degrees F (45 degrees C). Store tool and battery pack in locations where temperatures will not exceed 120 degrees F (49 degrees C). This is important to prevent serious damage to the battery cells.
Battery leakage may occur under extreme usage or temperature conditions. Avoid contact with skin and eyes. The battery liquid is caustic and could cause chemical burns to tissues. If liquid comes in contact with skin, wash quickly with soap and water. If the
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liquid contacts your eyes, flush them with water for a minimum of 10 minutes and seek medical attention.
Place charger on flat non-flammable surfaces and away from flammable materials when re-charging battery pack.
The charger and battery pack heat during charging. Carpeting and other heat insulating surfaces block proper air circulation which may
cause overheating of the charger and battery pack. If smoke or melting of the case are observed unplug the charger immediately and do not use the battery pack or charger.
Use of an attachment not recommended or sold by Bosch may result in a risk of fire, electric shock or injury to persons.
Battery Care
! WARNING When batteries are not in tool or charger, keep them
away from metal objects. For example, to protect terminals from shorting DO NOT place batteries in a tool box or pocket with
nails, screws, keys, etc. Fire or injury may result.
DO NOT PUT BATTERIES INTO FIRE OR ExPOSE TO HIGH HEAT. They may explode.
Battery Disposal
Do not attempt to disassemble the battery or remove any com ponent projecting from
the battery terminals. Fire or injury may result. Prior to disposal, protect exposed terminals with heavy insulating tape to prevent shorting.
LITHIUM-ION BATTERIES
If equipped with a lithium-ion battery, the battery must be collected, recycled or disposed of in an environ mentally sound manner.
“The EPA certified RBRC Battery Recycling Seal on the lithium-ion (Li-ion) battery indicates Robert Bosch Tool Corporation is voluntarily participating in an industry
program to collect and recycle these batteries at the end of their useful life, when taken out of service in the United States or Canada. The RBRC program provides a convenient alterative to placing used Li-ion batteries into the trash or the munici pal waste stream, which may be illegal in your area.
Please call 1-800-8-BATTERY for information on Li-ion battery recycling and disposal bans/restrictions in your area, or return your batteries to a Skil/Bosch/Dremel Service Center for recycling. Robert Bosch Tool Corporation’s involvement in this program is part of our commitment to preserving our environment and conserving our natural resources.”
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Symbols
IMPORTANT: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
Symbol |
Name |
Designation/Explanation |
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V |
Volts |
Voltage (potential) |
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A |
Amperes |
Current |
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Hz |
Hertz |
Frequency (cycles per second) |
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W |
Watt |
Power |
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kg |
Kilograms |
Weight |
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min |
Minutes |
Time |
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s |
Seconds |
Time |
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Diameter |
Size of drill bits, grinding wheels, etc. |
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n0 |
No load speed |
Rotational speed, at no load |
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.../min |
Revolutions or reciprocation per minute |
Revolutions, strokes, surface speed, |
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orbits etc. per minute |
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0 |
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Off position |
Zero speed, zero torque... |
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1, 2, 3, ... |
Selector settings |
Speed, torque or position settings. |
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I, II, III, |
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Higher number means greater speed |
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0 |
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Infinitely variable selector with off |
Speed is increasing from 0 setting |
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Arrow |
Action in the direction of arrow |
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Alternating current |
Type or a characteristic of current |
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Direct current |
Type or a characteristic of current |
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Alternating or direct current |
Type or a characteristic of current |
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Class II construction |
Designates Double Insulated |
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Construction tools. |
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Earthing terminal |
Grounding terminal |
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Warning symbol |
Alerts user to warning messages |
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Li-ion RBRC seal |
Designates Li-ion battery recycling |
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program |
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This symbol designates that this tool is listed by Underwriters Laboratories.
This symbol designates that this tool is listed by the Canadian Standards Association.
This symbol designates that this tool is listed by the Canadian Standards Association, to United States and Canadian Standards.
This symbol designates that this tool is listed by Underwriters Laboratories, to United States and Canadian Standards.
This symbol designates that this tool is listed by the Intertek Testing Services, to United States and Canadian Standards.
This symbol designates that
this tool complies to NOM Mexican Standards.
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Functional Description and Specifications |
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Disconnect battery pack from tool or place the switch in the locked or off |
! WARNING |
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position before making any assembly, adjustments or changing |
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accessories. Such preventive safety measures reduce the risk of starting the tool accidentally.
Cordless Drill/Driver
FIG. 1
GEAR SHIFTER
VENTILATION
OPENINGS
ADJUSTABLE
CLUTCH
KEYLESS
CHUCK
FORWARD/REVERSING
LEVER & TRIGGER LOCK
BATTERY CHARGE CONDITION
INDICATOR LIGHTS
RUBBERIZED
BUILT IN GRIP
WORK LIGHT
VARIABLE SPEED
TRIGGER SWITCH BATTERY
RELEASE
TABS
BATTERY
PACK
Model number |
PS31 |
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Mild metal |
3/8" |
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Voltage rating |
10.8V/12V |
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MAX |
Wood |
3/4" |
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No load speed 1 |
n0 0-350/min |
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Charge time |
BC330 (1 Hour) |
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No load speed 2 |
n0 0-1,300/min |
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BC430 (30 minutes) |
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Maximum Capacities |
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Battery pack |
BAT411 |
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Chuck size |
3/8" |
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Charger |
BC330 & BC430 |
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Screw sizes |
9/32" |
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Voltage rating |
120 V |
60 Hz |
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Assembly
Disconnect battery pack from tool before making any assembly, adjustments or changing
accessories. Such preventive safety measures reduce the risk of starting the tool accidentally.
INSERTING BITS
Move reverse switch lever to the center “OFF” position. Remove battery pack and rotate the clutch ring to the drill bit symbol “ 
”. Rotate the chuck sleeve counterclockwise viewing from chuck end, and open chuck to approximate drill bit diameter. Insert a clean bit up to the drill bit flutes for small bits, or as far as it will go for large bits. Close chuck by rotating the chuck sleeve clockwise and securely tighten by hand (Fig. 2).
Do not use the power of the ! WARNING drill while grasping chuck
to loosen or tighten bit. Friction burn or hand injury is possible if attempting to grasp the spinning chuck.
FIG. 2
CHUCK SLEEVE
SCREWDRIVER
BIT
BIT HOLDER
SCREWDRIVER BIT
Operating Instructions
PROTECTION AGAINST DEEP
DISCHARGING
The lithium ion battery is protected against deep discharging by the “Electronic Cell Protection (ECP)”. When the battery is empty, the tool is switched off by means of a protective circuit.
VARIABLE SPEED CONTROLLED
TRIGGER SWITCH
Your tool is equipped with a variable speed trigger switch. The tool can be turned "ON" or "OFF" by squeezing or releasing the trigger. The speed can be adjusted from the minimum to maximum nameplate RPM by the pressure you apply to the trigger. Apply more pressure to increase the speed and release pressure to decrease speed (Fig. 1).
FORWARD/REVERSING
LEVER & TRIGGER LOCK
After tool use, lock trigger in “OFF” position to help prevent
accidental starts and accidental discharge.
Your tool is equipped with a forward/ reversing lever and trigger lock located above the trigger (Fig. 3). This lever was designed for changing rotation of the bit, and for locking the trigger in an “OFF” position.
For forward rotation, (with chuck pointed away from you) move the lever to the far left.
For reverse rotation move the lever to the far right. To activate trigger lock move lever to the center off position.
Do not change direction of ! CAUTION rotation until the tool
comes to a complete stop. Shifting during rotation of the chuck can cause damage to the tool.
FIG. 3
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GEAR SHIFTING
Your tool is equipped with two separate gear ranges, low gear and high gear. Low gear provides high-torque and slower drilling speeds for heavy duty work or for driving screws. High gear provides faster speeds for drilling lighter work. To change speeds slide switch, to the high or low position (Fig. 1).
ATTENTION: If your tool appears to be running, but the chuck will not turn, check to make sure the gear shifting switch is pushed fully into desired setting.
ADJUSTABLE CLUTCH
Your tool features 20 clutch settings. Output torque will increase as the clutch ring, is rotated from 1 to 19. The drill “
” position will lock up the clutch to permit drilling and driving heavyduty work, and also enables bits to be changed quickly and easily in the keyless chuck (Fig. 7).
BRAKE
When the trigger switch is released it activates the brake to stop the chuck quickly. This is especially useful in the repetitive driving and removal of screws.
AUTOLOCK™
Your tool is equipped with an automatic locking system. This feature will lock the bit holder in one position when the trigger switch is released. This will allow you to tighten or loosen a nut or screw by rotating the tool by hand with the switch off. This is convenient when higher turning torque is needed.
BUILT IN WORK LIGHT
Your tool is also equipped with a light that turns on automatically when the switch is activated, for better visibility when drilling/driving (Fig. 7).
BATTERY CHARGE CONDITION
INDICATOR LIGHTS
Your tool is equipped with charge condition indicator lights (Fig. 1). The indicator lights shows the charge condition of the battery for a few second when the On/Off trigger is pressed halfway or fully.
LED |
Capacity |
Continuous lighting 3 x green |
> 2/3 |
Continuous lighting 2 x green |
> 1/3 |
Continuous lighting 1 x green |
< 1/3 |
Flashing light 1 x green |
reserve |
INSERTING AND RELEASING
BATTERY PACK
Release battery pack from tool by pressing on both sides of the battery release tabs and pull downward (Fig. 4).
To insert battery, align battery and slide battery pack into tool until it locks into position. Do not force.
If battery release tabs are ! WARNING cracked or otherwise
damaged, do not insert into tool. Battery can fall out during operation.
FIG. 4
BATTERY
RELEASE
TABS
IMPORTANT CHARGING NOTES
1. The charger was designed to fast charge the battery only when the battery temperature is between 32˚F (0˚C) and 113˚F (45˚C). If the battery pack is too hot or too cold, the charger will not fast charge the battery. (This may happen if the battery pack is hot from heavy use). When the battery temperature returns to between 32˚F (0˚C) and 113˚F (45˚C), the charger will automatically begin charging.
2.A substantial drop in operating time per charge may mean that the battery pack is nearing the end of its life and should be replaced.
3.Remember to unplug charger during storage period.
4.If battery does not charge properly:
a. Check for voltage at outlet by plugging in some other electrical device.
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b.Check to see if outlet is connected to a light switch which turns power “off” when lights are turned off.
c.Check battery pack terminals for dirt. Clean with cotton swab and alcohol if necessary.
d. If you still do not get proper charging, take or send tool, battery pack and charger to your local Bosch Service Center. See “Tools, Electric” in the Yellow Pages for names and addresses.
Note: Use of chargers or battery packs not sold by Bosch will void the warranty.
CHARGER INDICATORS, SYMBOLS AND MEANING (Model BC430)
If the indicator lights are “OFF”, the charger is not receiving power from power supply outlet.
If the green indicator light is “ON”, the charger is plugged in but the battery pack is not
inserted, or the battery pack is fully charged and is being trickle charged.
If the green indicator light is “BLINKING”, the battery pack is being fast-charged. Fast-
charging will automatically stop when the battery pack is fully charged.
If the red indicator light is “ON”, the battery pack is too hot or cold for fast-charging. The
charger will switch to trickle charge, until a suitable temperature is reached, at which time the charger will switch automatically to fast-charging.
If the red indicator light is “BLINKING”, the battery pack cannot accept a charge or the
contacts of the charger or battery pack are contaminated. Clean the contacts of the charger or battery pack only as directed in these operating instructions or those supplied with your tool or battery pack.
CHARGING BATTERY PACK (Model BC430)
The lithium ion battery is protected against deep discharging by the “Electronic Cell Protection (ECP)”. When the battery is empty, the tool is switched off by means of a protective circuit.
The battery is supplied partially charged. Completely charge the battery before using your cordless screwdriver 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.
Plug charger cord into your standard power outlet, then insert battery pack into charger (Fig. 5).
The charger’s green indicator light will begin to “BLINK”. This indicates that the battery is receiving a fast charge. Fast-charging will automatically stop when the battery pack is fully charged.
When the indicator light stops “BLINKING” (and becomes a steady green light) fast charging is complete.
The battery pack may be used even though the light may still be blinking. The light may require more time to stop blinking depending on temperature. When you begin the charging process of the battery pack, a steady red light could also mean the battery pack is too hot or too cold.
The purpose of the green light is to indicate that the battery pack is fast-charging. It does not indicate the exact point of full charge. The light will stop blinking in less time if the battery pack was not completely discharged.
When charging several batteries in sequence, the charge time may slightly increase.
When the battery pack is fully charged, unplug the charger (unless you're charging another battery pack) and slip the battery pack back into the tool.
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BATTERY
PACK
FIG. 5
CHARGER
RED LIGHT
GREEN LIGHT
CHARGER INDICATORS, SYMBOLS AND MEANING (Model BC330)
If the indicator lights are “OFF”, the charger is not receiving power from power supply outlet.
If the green indicator light is “BLINKING”, the battery pack is being fast-charged.
Fast-charging will automatically stop when the battery pack is fully charged.
If the green indicator light is
"ON", the charger is plugged in but the battery pack is not inserted, or the battery pack is
fully charged, or the battery pack is too hot or cold for fast-charging. The charger will automatically switch to fast-charging once a suitable temperature is reached.
CHARGING BATTERY PACK (Model BC330)
The lithium ion battery is protected against deep discharging by the “Electronic Cell Protection (ECP)”. When the battery is empty, the tool is switched off by means of a protective circuit.
The battery is supplied partially charged. Completely charge the battery before using your cordless screwdriver 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.
Plug charger cord into your standard power outlet, then insert battery pack into charger (Fig. 6).
The charger’s green indicator light will begin to “BLINK”. This indicates that the battery is receiving a fast charge. Fast-charging will automatically stop when the battery pack is fully charged.
When the indicator light stops “BLINKING” (and becomes a steady green light) fast charging is complete.
The battery pack may be used even though the light may still be blinking. The light may require more time to stop blinking depending on temperature. When you begin the charging process of the battery pack, a steady green light could also mean the battery pack is too hot or too cold.
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The purpose of the green light is to indicate that the battery pack is fast-charging. It does not indicate the exact point of full charge. The light will stop blinking in less time if the battery pack was not completely discharged.
When the battery pack is fully charged, unplug the charger (unless you're charging another battery pack) and slip the battery pack back into the tool.
FIG. 6
BATTERY
PACK
CHARGER
GREEN LIGHT
Operating Tips
You will extend the life of your bits and do neater work if you always put the bit in contact with the work before pulling the trigger. During the oper ation, hold the tool firmly and exert light, steady pressure. Too much pressure at low speed will stall the tool. Too little pressure will keep the bit from cutting and cause excess friction by sliding over the surface. This can be damaging to both tool and bit.
DRILLING WITH VARIABLE SPEED
The trigger controlled variable speed feature will eliminate the need for center punches in hard materials. The variable speed trigger allows you to slowly increase RPM. By using a slow starting speed, you are able to keep the bit from “wander ng”i. You can increase the speed as the bit “bites” into the work by squeezing the trigger.
DRIVING WITH VARIABLE SPEED
Variable speed drills will double as a power screwdriver by using a screwdriver bit in the drill mode. The technique is to start slowly, increasing the speed as the screw runs down. Set the screw snug yl by slowing to a
stop. Prior to driving screws, pilot and clearance holes should be drilled.
FASTENING WITH SCREWS
This procedure shown in (Fig. 7) will enable you to fasten ma terials together with your Cordless Drill/Screwdriver without stripping, splitting or separating the material.
FASTENING |
2. Drill same |
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WITH SCREWS |
diameter as |
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screw shank. |
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1. Drill 2/3 diameter and |
3. Countersink |
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same diameter |
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2/3 of screw length for |
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as screw head. |
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soft materials, full |
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length for hard |
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materials. |
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Adjustable |
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Screw |
Screw |
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Drill |
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Apply a slight |
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even pressure |
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when driving |
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screws. |
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FIG. 7
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First, clamp the pieces together and drill the first hole 2/3 the diam eter of the screw. If the material is soft, drill only 2/3 the proper length. If it is hard, drill the entire length.
Second, unclamp the pieces and drill the second hole the same diameter as the screw shank in the first or top piece of wood.
Third, if flat head screw is used, countersink
the hole to make the screw flush with the surface. Then, simply apply even pressure when driving the screw. The screw shank clearance hole in the first piece allows the screw head to pull the pieces tightly together.
The adjustable screw drill accessory will do all of these oper ations quickly and easily. Screw drills are available for screw sizes No. 6, 8, 10 and 12.
DRILL BITS
Always inspect drill bits for excessive wear. Use only bits that are sharp and in good condition.
TWIST BITS: Available with straight and reduced shanks for wood and light duty metal drilling. High speed bits cut faster and last longer on hard ma erialst.
CARBIDE TIPPED BITS: Used for drilling stone, con crete, plaster, cement and other unusually hard nonmetals. Use continuous heavy feed pres sure when employing carbide tip bits.
DRILLING WOOD
Be certain workpiece is clamped or anchored firm yl. Always apply pressure in a straight line with the drill bit. Maintain enough pressure to keep the drill “biting”.
When drilling holes in wood, twist bits can be used. Twist bits may overheat unless pulled out frequently to clear chips from flutes.
Use a “back-up” block of wood for work that is likely to splinter, such as thin materials.
You will drill a cleaner hole if you ease up on the pressure just before the bit breaks through
the wood. Then complete the hole from the back side.
DRILLING METAL
There are two rules for drilling hard materials. First, the harder the material, the greater the pres sure you need to apply to the tool. Second, the harder the material, the slower the speed. Here are a couple of tips for drilling in metal. Lubri cate the tip of the bit occasionally with cutting oil except when drilling soft metals such as alu minum, cop per or cast iron. If the hole to be drilled is fairly large, drill a smaller hole first, then enlarge to the required size, it’s often faster in the long run. Main tain enough pressure to assure that the bit does not just spin in the hole. This will dull the bit and greatly shorten its life.
RUNNING NUTS AND BOLTS
Variable speed control must be used with caution for driving nuts and bolts with socket set attach ments. The technique is to start slowly, increasing speed as the nut or bolt runs down. Set the nut or bolt snugly by slowing the drill to a stop. If this procedure is not followed, the tool will have a tendency to torque or twist in your hands when the nut or bolt seats.
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Maintenance
Service
NO USER SERVICEABLE
PARTS INSIDE. Preventive maintenance performed by un au thorized personnel may result in misplacing of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station. SERVICE MEN: Disconnect tool and/or charger from power source before servicing.
BATTERIES
Be alert for battery packs that are nearing their end of life. If you notice decreased tool performance or significantly shorter running time between charges then it is time to replace the battery pack. Failure to do so can cause the tool to operate improperly or damage the charger.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated and is ready for use.
D.C. MOTORS
The motor in your tool has been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend it be examined every six months. Only a genuine Bosch replacement motor specially designed for your tool should be used.
Cleaning
To avoid accidents, always disconnect the tool and/or charger from the power supply before
cleaning. The tool may be cleaned most effectively with com pressed dry air. Always wear safety goggles when cleaning tools with compressed air.
Ventilation openings and switch levers must be kept clean and free of foreign matter. Do not attempt to clean by inserting pointed objects through opening.
Certain cleaning agents and ! CAUTION solvents damage plastic
parts. Some of these are: gasoline, car bon tetrachloride, chlorinated cleaning solvents, ammonia and household detergents that contain ammonia.
Accessories
If an extension cord is necessary, a cord with adequate size conductors that is capable
of carrying the current necessary for your tool must be used. This will prevent excessive voltage drop, loss of power or overheating. Grounded tools must use 3-wire extension cords that have 3-prong plugs and receptacles.
NOTE: The smaller the gauge number, the heav ier the cord.
RECOMMENDED SIZES OF ExTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Tool’s |
Cord Size in A.W.G. |
Wire Sizes in mm2 |
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Ampere |
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Cord Length in Feet |
Cord Length in Meters |
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Rating |
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25 |
50 |
100 |
150 |
15 |
30 |
60 |
120 |
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3-6 |
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18 |
16 |
16 |
14 |
0.75 |
0.75 |
1.5 |
2.5 |
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6-8 |
18 |
16 |
14 |
12 |
0.75 |
1.0 |
2.5 |
4.0 |
|
8-10 |
18 |
16 |
14 |
12 |
0.75 |
1.0 |
2.5 |
4.0 |
|
10-12 |
16 |
16 |
14 |
12 |
1.0 |
2.5 |
4.0 |
— |
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12-16 |
14 |
12 |
— |
— |
— |
— |
— |
— |
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