OPERATOR'S MANUAL
MANUEL DE L'UTILISATEUR
MANUAL DEL OPERADOR
ROTARY & CHIPPING HAMMERS
MARTEAUX ROTATIFS & PERFORATEURS
MARTILLOS ROTATORIO & PARA PICADO
Catalog No.
No de Cat.
Número de Catálogo
800S
845S
TO REDUCE THE RISK OF INJURY, USER MUST READ AND UNDERSTAND OPERATOR'S MANUAL.
AFIN DE RÉDUIRE LE RISQUE DE BLESSURES, L'UTILISATEUR DOIT LIRE ET BIEN COMPRENDRE LE
MANUEL DE L'UTILISATEUR.
PARA REDUCIR EL RIESGO DE LESIONES, EL USUARIO DEBE LEER Y ENTENDER EL MANUAL DEL
OPERADOR.
© Copyright 2000 ATLAS COPCO BEREMA AB
STOCKHOLM • SWEDEN
No. 9800 7126 93
2000-12
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below, may result in
electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
WORK AREA
1. Keep your work area clean and well lit. Cluttered benches and
dark areas invite accidents.
2. 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.
3. Keep bystanders, children, and visitors away while operat-
ing a power tool. Distractions can cause you to lose control.
Protect others in the work area from debris such as chips and
sparks. Provide barriers or shields as needed.
ELECTRICAL SAFETY
4. Grounded tools must be plugged into an outlet properly
installed and grounded in accordance with all codes and
ordinances. Never remove the grounding prong or modify
the plug in any way. Do not use any adaptor plugs. Check
with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrically
malfunction or break down, grounding provides a low resistance
path to carry electricity away from the user.
5. Double Insulated tools are equipped with a polarized plug
(one blade is wider than the other). This plug will fit in a
polarized outlet only one way. If the plug does not fit fully in
the outlet, reverse the plug. If it still does not fit, contact a
qualified electrician to install a polarized outlet. Do not change
the plug in any way. Double insulation eliminates the need for
the three wire grounded power cord and grounded power supply
system.
6. Avoid body contact with grounded surfaces such as pipes,
radiators, ranges and refrigerators. There is an increased risk
of electric shock if your body is grounded.
7. Do not expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric shock.
8. Do not abuse the cord. Never use the cord to carry the tools
or pull the plug from an outlet. Keep cord away from heat,
oil, sharp edges or moving parts. Replace damaged cords
immediately. Damaged cords increase the risk of electric shock.
9. When operating a power tool outside, use an outdoor
extension cord marked “W-A” or “W”. These cords are rated
for outdoor use and reduce the risk of electric shock.
PERSONAL SAFETY
10. Stay alert, watch what you are doing, and use common sense
when operating a power tool. Do not use tool while tired or
under the influence of drugs, alcohol, or medication. A
moment of inattention while operating power tools may result in
serious personal injury.
11. Dress properly. Do not wear loose clothing or jewelry.
Contain long hair. Keep your hair, clothing, and gloves away
from moving parts. Loose clothes, jewelry, or long hair can be
caught in moving parts.
12. Avoid accidental starting. Be sure switch is off before
plugging in. Carrying tools with your finger on the switch or
plugging in tools with the switch on invites accidents.
13. Remove adjusting keys or wrenches before turning the
tool on. A wrench or a key that is left attached to a rotating part of
the tool may result in personal injury.
14. Do not overreach. Keep proper footing and balance at all
times. Proper footing and balance enables better control of the tool
in unexpected situations.
15. Use safety equipment. Always wear eye protection. Dust
mask, non-skid safety shoes, hard hat, or hearing protection must
be used for appropriate conditions.
TOOL USE AND CARE
16. 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.
17. Do not force tool. Use the correct tool for your application.
The correct tool will do the job better and safer at the rate for which
it is designed.
18. Do not use tool if switch does not turn it on or off. Any tool
that cannot be controlled with the switch is dangerous and must be
repaired.
19. Disconnect the plug from the power source before making
any adjustments, changing accessories, or storing the tool.
Such preventive safety measures reduce the risk of starting the tool
accidentally.
20. Store idle tools out of reach of children and other untrained
persons. Tools are dangerous in the hands of untrained users.
21. Maintain tools with care. Keep cutting tools sharp and clean.
Properly maintained tools with sharp cutting edge are less likely to
bind and are easier to control. Do not use a damaged tool. Tag
damaged tools “Do not use” until repaired.
22. Check for misalignment or binding of moving parts, break-
age of parts, and any other condition that may affect the
tool’s operation. If damaged, have the tool serviced before
using. Many accidents are caused by poorly maintained tools.
23. Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for
one tool, may become hazardous when used on another tool.
SERVICE
24. Tool service must be performed only by qualified repair
personnel. Service or maintenance performed by unqualified per-
sonnel could result in a risk of injury.
25. When servicing a tool, use only identical replacement parts.
Follow instructions in the Maintenance section of this
manual. Use of unauthorized parts or failure to follow Maintenance
Instructions may create a risk of electric shock or injury.
page 2
SPECIFIC SAFETY RULES
1. Hold tool 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. Wear ear protectors when using the tool for extended periods. Prolonged exposure to high intensity noise can cause hearing loss.
3. Keep hands away from all cutting edges and moving parts.
4. Maintain labels and nameplates. These carry important information. If unreadable or missing, contact a
replacement.
5. WARNING! 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 paint
• 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.
Service Agent facility for a free
Symbology
To reduce the risk of injury, user
must read and understand
operator's manual
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
Volts Alternating Current
No Load Revolutions per
Minute (RPM)
Amperes
Hertz
1. Rear side handle mount
2. Vibration Isolation System
3. Speed control dial
4. Handle
5. Trigger
6. Nameplate
7. Stop rotation knob (Cat. No. 845S)
8. Bit lock
9. Dust shield
10. Vibration isolation side handle
11. Depth gauge adjustment knob (Cat. No. 845S)
12. Depth gauge (Cat. No. 845S)
Specifications
13.0
13.0
Load/
No
Load
RPM
--
150-400*
Volts
Cat.
AC
No.
Only
Amps
800S
120
845S
120
*
EFCC - The Electronic Feedback Control Circuit maintains constant speed under
varying load conditions.
Load/
No Load
Blows per
Minute
1300-3450*
1300-3450*
Percussion
Carbide
Tipped
Bits
--
1-3/4"
Percussion
Core
Bits
--
6"
Self-
Drilling
Anchors
--
5/8"
FUNCTIONAL DESCRIPTION
10
11
9
8
12
1
2
7
6
Chisels
Round/
Hex
See p.8
3
5
4
Cat. No. 845S
page 3
GROUNDING EXTENSION CORDS
WARNING!
Improperly connecting the grounding wire can
result in the risk of electric shock. Check with a
qualified electrician if you are in doubt as to
whether the outlet is properly grounded. Do not
modify the plug provided with the tool. Never
remove the grounding prong from the plug. Do
not use the tool if the cord or plug is damaged. If
damaged, have it repaired by a service agent
before use. If the plug will not fit the outlet, have
a proper outlet installed by a qualified electrician.
Grounded Tools:
Tools with Three Prong Plugs
Tools marked “Grounding Required”
have a three wire cord and three
prong grounding plug. The plug must
be connected to a properly grounded
outlet (See Figure A). If the tool should
electrically malfunction or break
down, grounding provides a low resistance path to carry electricity
away from the user, reducing the risk
of electric shock.
The grounding prong in the plug is connected through the green wire
inside the cord to the grounding system in the tool. The green wire in the
cord must be the only wire connected to the tool's grounding system and
must never be attached to an electrically “live” terminal.
Your tool must be plugged into an appropriate outlet, properly installed
and grounded in accordance with all codes and ordinances. The plug
and outlet should look like those in Figure A.
Double Insulated Tools:
Tools with Two Prong Plugs
Tools marked “Double Insulated” do
not require grounding. They have a
special double insulation system
which satisfies OSHA requirements
and complies with the applicable
standards of Underwriters Laboratories, Inc., the Canadian Standard
Association and the National Electrical Code. Double Insulated tools may
be used in either of the 120 volt outlets shown in Figures B and C.
Fig. A
Fig. B
Fig. C
Grounded tools require a three wire extension cord. Double insulated
tools can use either a two or three wire extension cord. As the distance
from the supply outlet increases, you must use a heavier gauge extension cord. Using extension cords with inadequately sized wire causes a
serious drop in voltage, resulting in loss of power and possible tool
damage. Refer to the table shown to determine the required minimum
wire size.
The smaller the gauge number of the wire, the greater the capacity of the
cord. For example, a 14 gauge cord can carry a higher current than a 16
gauge cord. When using more than one extension cord to make up the
total length, be sure each cord contains at least the minimum wire size
required. If you are using one extension cord for more than one tool, add
the nameplate amperes and use the sum to determine the required minimum wire size.
Guidelines for Using Extension Cords
• If you are using an extension cord outdoors, be sure it is marked
with the suffix “W-A” (“W” in Canada) to indicate that it is acceptable
for outdoor use.
• Be sure your extension cord is properly wired and in good electrical
condition. Always replace a damaged extension cord or have it
repaired by a qualified person before using it.
• Protect your extension cords from sharp objects, excessive heat
and damp or wet areas.
Recommended Minimum Wire Gauge
Nameplate
Amperes
12.1 - 15
15.1 - 20
* Based on limiting the line voltage drop to five
volts at 150% of the rated amperes.
for Extension Cords*
25'
0 - 5
5.1 - 8
8.1 - 12
16
16
14
12
10
Extension Cord Length
100'
14
12
10
10
150'
12
10
--
--
--
--
50'
16
16
14
12
10
75'
16
14
12
10
10
200'
12
--
--
--
--
READ AND SAVE ALL INSTRUCTIONS FOR
FUTURE USE.
page 4
TOOL ASSEMBLY
WARNING!
To reduce the risk of injury, always unplug
tool before attaching or removing accessories
or making adjustments. Use only specifically
recommended accessories. Others may be
hazardous.
Adjusting the Side Handle (Fig. 1)
Fig. 1
1. Loosen the side handle slightly by unscrewing it counterclockwise.
2. Rotate the side handle to the required angle.
3. Tighten the side handle securely.
1
1. Insert the chisel into the nose of the tool. Make sure that the notch in
the shank faces toward the bit lock.
2. To lock, push the bit lock to the right as shown.
3. To unlock, push the bit lock to the left as shown.
NOTE: Use caution when handling hot bits and chisels.
Installing Bits and Chisels (Fig. 3)
Spline Drive System (Cat. No. 845S)
The 845S Rotary Hammer uses carbide bits with spline shanks and
hammer steel chisels with round hex shanks.
Fig. 3
Rotary bit with spline shank
WARNING!
To reduce the risk of injury, always use a side
handle when using this tool. Always brace and
hold securely.
The side handle can be used at the rear of the tool. Remove the handle
and install it in one of the positions provided on either side (1). Use the
side handle knob in the front handle position to secure the depth gauge
assembly (Cat. No. 845S only).
Installing Chisels (Fig. 2)
Round Hex System (Cat. No. 800S)
The 800S Chipping Hammer uses hammer steel chisels with round hex
shanks.
Fig. 2
Chisel with round hex shank
1. Insert the bit or chisel into the nose of the tool.
If you are using a rotary bit, make sure that the splines on the shank
engage with the splines inside the nose of the tool.
If you are using a chisel, make sure that the notch in the shank faces
toward the bit lock.
2. To lock, push the bit lock to the right as shown.
3. To unlock, push the bit lock to the left as shown.
NOTE: Use caution when handling hot bits and chisels.
Setting the Depth Gauge (Fig. 4)
(Cat. No. 845S)
Fig. 4
1
2
Chisel with round hex shank
1. Loosen the depth gauge adjustment knob (2).
2. Slide the depth gauge rod (1) backward or forward until it is set for
the desired depth. The drilling depth is the distance between the tip
of the bit and the tip of the depth gauge rod.
3. Tighten the depth gauge adjustment knob securely.
page 5
OPERATION
These hammers have an Electronic Feedback Control Circuit (EFCC)
which helps improve the operation and life of the tool.
Soft Start
The Soft-Start feature reduces the amount of torque reaction to the tool
and the user. This feature gradually increases the motor speed up from
zero to the speed set by the speed control dial.
Feedback Control
The electronic speed control system allows the tool to maintain constant
speed and torque between no-load and load conditions.
WARNING!
To reduce the risk of injury, wear safety goggles
or glasses with side shields.
Selecting Action (Fig. 5)
(Cat. No. 845S)
The stop rotation knob may be set for either “hammering-only” or
“hammering-with-rotation”.
Fig. 5
1
Hammering Only
Spline Drive System (Cat. No. 845S)
When a chisel (or other “hammering-only” accessory) is mounted into
the 845S Rotary Hammer and the stop rotation knob is set for “hammering-with-rotation”, the rotational drive mechanism does not engage with
the chisel, even though the rotational drive mechanism is running. The
845S can use chisels in the “hammering-with-rotation” setting or the
“hammering-only” setting.
Selecting Speed
These hammers have a speed control dial. For the 800S, the speed
control dial allows the user to adjust the impact rate (BPM) of the tool. For
the 845S, the speed control dial allows the user to adjust the rotating
speed (RPM) and the impact rate (BPM) of the tool.
To change the speed, set the speed control dial to the desired setting.
Lower speeds provide more control when starting holes and reduce
‘spalling’ on breakthrough. Spalling occurs when pieces of material chip
off around the drilled hole on breakthrough. When chiseling in soft or
brittle materials, use lower speeds to reduce damage to surrounding
areas of the material.
Higher speeds provide for faster penetration when drilling and chiseling
in demolition work.
Starting and Stopping the Tool
1. To start the tool, pull trigger.
2. To stop the tool, release trigger.
2
1. Hammering only. For use with “hammering-only” accessories.
Use this setting (1) for chiseling or setting self-drilling anchors.
2. Hammering with rotation. Use this setting (2) for drilling holes
with drill bits.
NOTE: To engage the hammering mechanism, maintain pressure on the
bit. When the pressure on the bit is released, the hammering will stop.
Cold Starting
If this tool is stored for a long period of time or at cold temperatures, it
may not hammer initially because the lubrication has become stiff.
To warm up the tool:
1. Insert and lock a bit or chisel into the tool.
2. Turn the tool on, applying force to the bit or chisel against a concrete
or wood surface.
3. Turn the tool on and off every few seconds. In a short time, the tool
will start hammering. The colder the tool is, the longer it will take to
warm it up.
page 6
WARNING!
Applying greater pressure does not increase the tool's
effectiveness. If the applied working pressure is too
high, the shock absorber will be pushed together
making the vibrations to the handle noticeably
stronger.
Fig. 7
Operator Force (Fig. 6)
These hammers feature the Vibration Isolation System to provide the
operator with comfort without sacrificing power or performance. The
motor is suspended independently from the switch handle.
Insulating elements absorb up to 50% of the vibration when hammering
and drilling.
Ideal operator force compresses the bellows slightly and allows the tool
to work aggressively while the handle remains steady.
Excessive force compresses the bellows significantly and reduces vibration dampening. Users will be able to feel the difference and should
adjust the force to the handle accordingly (Fig. 6).
Fig. 6
ideal applied force
excessive applied force
3. Insert the adapter into the nose of the tool as described in “Installing
Bits”. Set the stop rotation knob to the hammering-with-rotation
setting.
4. Press the center pin firmly against your center mark, hold the tool
firmly and pull the trigger (Fig. 8).
Fig. 8
NOTE: If a center pin and guide plate are not available, use a template or
notched board to start the hole (Fig. 9).
Fig. 9
The side handle works in a similar fashion, where moderate operator
force dampens vibration and excessive force reduces this effect.
Hammering or Hammering with Rotation
Position the tool, grasp the handles firmly and pull the trigger.
Always hold the tool securely using both handles and maintain control.
Use only enough pressure to hold the tool in place and prevent the tip of
the bit from wandering. This tool has been designed to achieve top
performance with only moderate pressure. Let the tool do the work.
For 845S- if the speed begins to drop off when drilling deep holes, pull
the bit partially out of the hole while the tool is running to help clear dust.
NOTE: Do not use water to settle the dust since it will clog the bit flutes
and tend to make the bit bind in the hole. If the bit should bind, a built-in,
non-adjustable slip clutch prevents the bit from turning. If this occurs,
stop the tool, free the bit and begin again.
Using Rotary Percussion Core Bits (Fig. 7 - 10)
(Cat. No. 845S)
Core bits are useful for drilling large holes for conduit and pipe.
Core bits have heat-treated steel bodies with durable carbide tips. These
core bits are specially designed for fast, accurate drilling with combined
hammering and rotary action.
1. Clean and lubricate the threads on the adapter and core bit to make
later removal easier. Screw the threaded end of the adapter into the
rear of the core bit.
2. Push the guide plate onto the pointed end of the center pin. Insert the
center pin and guide plate assembly into the core bit. Be sure the
small end of the center pin is securely placed into the hole in the
center of the core bit (Fig. 7).
5. After drilling to about the depth of the core bit teeth, remove the
center pin and guide plate from the core bit. Resume drilling.
6. To change the core bit, hold the tool upwards, pointing it away from
your body as shown, and run it briefly in forward to loosen the core
bit from the adapter (Fig. 10).
Fig. 10
NOTE: To make deeper holes, remove the core bit, break and remove the
core. Resume drilling.
page 7
WARNING!
To reduce the risk of personal injury and damage to the
tool or work:
• Always use the “hammering-only” setting to set
the anchor. Never use the “hammering-withrotation” setting to set the anchor.
• Never switch the tool to “hammering-with-rotation”
until after the anchor has been set and the tooth
anchor chuck has been removed from the anchor.
Setting Self-Drilling Anchors (Fig. 11 - 16)
(Cat. No. 845S)
The 845S Rotary Hammer features a stop rotation knob which is helpful
for setting self-drilling anchors up to 5/8". Tooth anchor chucks require a
“B” taper adapter.
Fig. 11
Fig. 12
1/8"
1. Place the proper size tooth anchor chuck into the “B” taper adapter.
Then insert the “B” taper adapter into the tool and lock it into place as
described. See “Installing Bits and Chisels”.
2. Insert the anchor into the tooth anchor chuck. Set the stop rotation
knob for hammering only. Set the anchor on your mark and hammer
until the teeth have penetrated the concrete (Fig. 11).
3. Switch the stop rotation knob for hammering with rotation and drill
until the chuck is 1/8" above the concrete (Fig. 12).
NOTE: It may be necessary to clean dust and cuttings from the
anchor several times while drilling the hole.
4. Remove the anchor from the hole while the tool is running. Clean the
dust and cuttings from the anchor by pointing it downward and
turning the tool on and off several times. Clean the dust out of the
hole with a vacuum cleaner or blowout bulb (Fig. 13).
5. Place the expansion plug into the anchor and insert the anchor into
the hole. Switch the stop rotation knob back to hammering only, and
hammer the anchor firmly into the hole (Fig. 14).
6. Snap the head off of the anchor. To remove the head of anchors up
to 5/8", grasp the handles firmly and pull the tool sharply towards
you (Fig. 15) or snap off the anchor head with a hand hammer as
shown (Fig. 16). The anchor is now ready to receive a bolt.
7. To remove the anchor head wedged in the tooth anchor chuck, use
ejector No. 9170 0888 40.
8. To remove the tooth anchor chuck, remove the “B” taper adapter
from the nose of the tool. Insert the drift pin supplied with the adapter
into the hole on the side of the “B” taper adapter and strike it sharply
to force out the tooth anchor chuck.
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Chiseling and Chipping
These hammers may be used for chipping and chiseling.
When chiseling, hold the tool at an angle to the workpiece. Work from a
corner or close to the edge of the workpiece, breaking off one small area
at a time rather than attempting too large an area.
A variety of accessories are available:
Bushing Tools
Used to surface concrete.
Mortar Cutting Chisels (Seam Tools)
For removing old mortar for tuck pointing or
caulking.
Bull Points
For demolition work and starting holes in concrete slabs.
Flat Chisels
For edging, chipping or channeling.
Scaling Chisels
For removing weld spatter or scale and cutting
straight lines.
page 8
Slotting Chisel
For slotting and cutting between drilled holes
in concrete and masonry.
MAINTENANCE
WARNING!
To reduce the risk of injury, always unplug your
tool before performing any maintenance. Never
disassemble the tool or try to do any rewiring on
the tool's electrical system. Contact a
Service Agent for ALL repairs.
Maintaining Tools
Keep your tool in good repair by adopting a regular maintenance program. Before use, examine the general condition of your tool. Inspect
guards, switches, tool cord set and extension cord for damage. Check
for loose screws, misalignment, binding of moving parts, improper mounting, broken parts and any other condition that may affect its safe operation. If abnormal noise or vibration occurs, turn the tool off immediately
and have the problem corrected before further use. Do not use a damaged tool. Tag damaged tools “DO NOT USE” until repaired
(see “Repairs”).
Under normal conditions, relubrication is not necessary until the motor
brushes need to be replaced. After six months to one year, depending on
use, return your tool to the nearest service agent for the following:
• Lubrication
• Brush inspection and replacement
• Mechanical inspection and cleaning (gears, spindles, bearings,
housing, etc.)
• Electrical inspection (switch, cord, armature, etc.)
• Testing to assure proper mechanical and electrical operation
WARNING!
To reduce the risk of injury, electric shock and
damage to the tool, never immerse your tool in
liquid or allow a liquid to flow inside the tool.
Cleaning
Clean dust and debris from vents. Keep the tool handles clean, dry and
free of oil or grease. Use only mild soap and a damp cloth to clean your
tool since certain cleaning agents and solvents are harmful to plastics
and other insulated parts. Some of these include: gasoline, turpentine,
lacquer thinner, paint thinner, chlorinated cleaning solvents, ammonia
and household detergents containing ammonia. Never use flammable or
combustible solvents around tools.
Repairs
If your tool is damaged, return the entire tool to the nearest service
center listed on the back cover of this operator’s manual.
ACCESSORIES
For a complete listing of accessories refer to your Accessory catalog.
To obtain a catalog, refer to your Service Agent List for the Service
Agent nearest you.
page 9
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