Rockwell RK7755 User manual

WARRANTY YEARS
GARANTIE ANS
GARANTÍA AÑOS
RK7755
CHOP SAW
SIERRA PARA CONCRETO
SCIE
PAG 5
PAG 13
PAG 21
ENG
ESP
FRE
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Thank you for purchasing a ROCKWELL power tool . We are confident that you will
appreciate the quality of the product and you will be entirely satisfied with your
purchase. Please read carefully the user safety and operating instructions on how to
operate this product correctly within safety norms and regulations.
Gracias por su compra de un producto ROCKWELL. Estamos seguros de que apreciará
la calidad del producto y de que estará completamente satisfecho con su compra. Lea
cuidadosamente las instrucciones de seguridad y de operación para obtener mayor
información acerca de cómo utilizar éste producto correctamente dentro de las normas
y reglas de seguridad.
Merci d’avoir choisi un produit de marque ROCKWELL. Nous sommes certains que vous
apprécierez la qualité de ce produit et qu’il saura vous satisfaire. Pour être renseigné
sur toutes les méthodes de travail correctes et sécuritaires répondant aux normes
et règlements de sécurité, veuillez lire attentivement la notice de sécurité et de
fonctionnement présentée.
Visit us on the web at www.rockwelltools.com
ROCKWELL TOOLS Consumer Helpline
866-514-7625
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RK7755
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COMPONENT LIST
UPPER GUARD
MOVABLE GUARD
SPINDLE LOCK
CUTTING DISC
CLAMPING SPINDLE
LOCKING LEVER
CLAMPING SPINDLE HANDLE
BASE PLATE
SPANNER
ANGLE STOP
DEPTH STOP BOLT
TRANSPORT CHAIN
ON/OFF SWITCH
HANDLE
SPARK GUARD
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ACCESSORIES
Spanner 1pc
Cutting disc 1pc
We recommend that you buy all your accessories from
the store where you purchased the tool. Use good
quality accessories marked with a well-known brand
name. Choose the grade according to the work you
intend to undertake. Refer to the accessory packaging
for further details. Store personnel can also help and
advise.
SAFETY INSTRUCTIONS
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
SAFETY INSTRUCTIONS
A. GROUNDING INSTRUCTIONS
1. ALL GROUNDED, CORD-CONNECTED MACHINES:
In the event of a malfunction or breakdown, grounding
provides a path of least resistance for electric current
to reduce the risk of electric shock. This machine is
equipped with an electric cord having an equipment-
grounding conductor and a grounding plug. The plug
must be plugged into a matching outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
Do not modify the plug provided. If it will not fit the
outlet, have the proper outlet installed by a qualified
electrician.
Improper connection of the equipment-grounding
conductor can result in risk of electric shock. The
conductor with insulation having an outer surface that
is green with or without yellow stripes is the equipment-
grounding conductor. If repair or replacement of the
electric cord or plug is necessary, do not connect the
equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel
if the grounding instructions are not completely
understood, or if in doubt as to whether the machine is
properly grounded.
Use only 3-wire extension cords that have 3-prong
grounding type plugs and matching 3-conductor
receptacles that accept the machine’s plug, as shown
in Fig M.
a: Grounded outlet box
b: Current carrying prongs
c: Grounding blade is longest of the 3 blades
Repair or replace damaged or worn cord immediately.
2. GROUNDED, CORD-CONNECTED MACHINES INTENDED
FOR USE ON A SUPPLY CIRCUIT HAYING A NOMINAL
RATING LESS THAN 150 VOLTS:
If the machine is intended for use on a circuit that
has an outlet that looks like the one illustrated in Fig
M, the machine will have a grounding plug that looks
like the plug illustrated in Fig M. A temporary adapter
which looks like the adapter illustrated in Fig N, may be
used to connect this plug to a matching 2-conductor
receptacle as shown in Fig N,if a properly grounded
outlet is not available. The temporary adapter should
be used only until a properly grounded outlet can be
installed by a qualified electrician.
a: Grounded outlet box
d: Grounding means
e: Adapter
The green-colored rigid ear, lug, and the like, extending
from the adapter must be connected to a permanent
ground such as a properly grounded outlet box.
Whenever the adapter is used, it must be held in place
with a metal screw.
NOTE: In Canada, the use of a temporary adapter is
not permitted by the Canadian Electric Code.
DANGER: IN ALL CASES, MAKE CERTAIN THE
RECEPTACLE IN QUESTION IS PROPERLY GROUND.
IF YOU ARE NOT SURE HAVE A QUALIFIED ELECTRICIAN
CHECK THE RECEPTACLE.
3. PERMANENTLY CONNECTED TOOLS:
This tool should be connected to a grounded metal
permanent wiring system; or to a system having an
equipment-grounding conductor.
B. FOR ALL TOOLS AS APPLICABLE
1. Keep guards in place and in working order.
2. Remove adjusting keys and wrenches. Form habit of
checking to see that keys and adjusting wrenches are
removed from tool before turning it on.
3. Keep work area clean. Cluttered areas and benches
invite accidents.
4. Don’t use in dangerous environment. Don’t use power
tools in damp or wet locations, or expose them to rain.
Keep work area well lighted.
5. Keep children away. All visitors should be kept safe
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CHOP SAW ENG
distance from work area.
6. Make workshop kid proof with padlocks, master
switches, or by removing starter keys.
7. Don’t force tool. It will do the job better and safer at
the rate for which it was designed.
8. Use right tool. Don’t force tool or attachment to do a
job for which it was not designed.
9. Use proper extension cord. Make sure your extension
cord is in good condition. When using an extension
cord, be sure to use one heavy enough to carry the
current your product will draw. An undersized cord will
cause a drop in line voltage resulting in loss of power
and overheating. Table 1 shows the correct size to use
depending on cord length and nameplate ampere rating.
If in doubt, use the next heavier gage. The smaller the
gage number, the heavier the cord.
Table 1 Minimum gage for corda
Ampere Rating
Volts Total length of cord in feet
120V
240V
25ft.
50ft.
50ft.
100ft.
100 ft.
200 ft.
150 ft.
300 ft.
More
Than
Not
More
Than
AWG
0
6
10
6
10
12
18
18
16
16
16
16
16
14
14
14
12
12
12 16 14 12 Not
Recommended
10. Wear proper apparel. Do not wear loose clothing,
gloves, neckties, rings, bracelets, or other jewelry which
may get caught in moving parts. Nonslip footwear is
recommended. Wear protective hair covering to contain
long hair.
11. Always use safety glasses. Also use face or dust
mask if cutting operation is dusty. Everyday eyeglasses
only have impact resistant lenses, they are NOT safety
glasses.
12. Secure work. Use clamps or a vise to hold work
when practical. It’s safer than using your hand and it
frees both hands to operate tool.
13. Don’t overreach. Keep proper footing and balance
at all times.
14. Maintain tools with care. Keep tools sharp and clean
for best and safest performance. Follow instructions for
lubricating and changing accessories.
15. Disconnect tools before servicing; when changing
accessories, such as blades, bits, cutters, and the like.
16. Reduce the risk of unintentional starting. Make sure
switch is in off position before plugging in.
17. Use recommended accessories. Consult the owner’s
manual for recommended accessories. The use of
improper accessories may cause risk of injury to
persons.
18. Never stand on tool. Serious injury could occur if
the tool is tipped or if the cutting tool is unintentionally
contacted.
19. Check damaged parts. Before further use of the
tool, a guard or other part that is damaged should
be carefully checked to determine that it will operate
properly and perform its intended function - check for
alignment of moving parts, binding of moving parts,
breakage of parts, mounting, and any other conditions
that may affect its operation. A guard or other part that
is damaged should be properly repaired or replaced.
20. Direction of feed. Feed work into a blade or cutter
against the direction of rotation of the blade or cutter
only.
21. Never leave tool running unattended. Turn power off.
Don’t leave tool until it comes to a complete stop.
SPECIFIC SAFETY RULES FOR CUT
OFF MACHINES
1. If the power cable is damaged or cut through while
working, do not touch the cable, and pull the power
plug out immediately. Never use the machine with a
damaged cable.
2. Wear protective glasses and hearing protection. Dust
is generated while working that can be detrimental to
health, inflammable or explosive. Suitable protective
measure are required.
3. For example: Some types of dust are considered to be
carcinogenic. Use suitable dust vacuuming and wear a
dust protection mask.
4. Light metal dust can burn or explode. Always
keep the workplace clean since mixed materials are
especially dangerous.
5. Wear protective gloves and sturdy shoes. When
necessary, also wear an apron.
6. Connect machines that are used outdoors by means
of a fault current circuit breaker (FI_) with a maximum
triggering current of 30 mA. Use only an extension
cable that is approved for outdoor use.
7. Always lead the cable to the rear away from the
machine.
8. Use the machine only for dry cutting.
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8
9. Take hold of the electric tool only by the insulated
handle when the cutting tool could come in contact
with hidden wiring or its own power cable. Contact with
voltage carrying wiring can place the metal parts of the
machine also under voltage and lead to an electrical
shock.
10. Never stand on the machine. Serious injury could
occur if the tool is tipped or if the cutting tool is
accidentally started.
11. Use cutting discs whose allowable speed is at least
as high as the no load speed of the machine. Check the
cutting disc before use.
12. Keep your body positioned to either side of but not
in line with the cutting disc. In case of a burst disc, your
body is better protected from possible fragments.
13. The cutting disc must be flawlessly mounted and
be able to rotate freely. Make a test run of at least one
minute without load. Do not use damaged, out of round
or vibrating cutting discs. Always correctly adjust
the depth stop. When the depth stop is not properly
adjusted, the cutting disc can cut into the surface
underneath the base plate.
14. During operation, the cutting disc cover must be
attached and the protective pendulum hood must be
functioning properly.
15. Do not work with magnesium or materials containing
asbestos.
16. Protect the cutting disc from impacts, shocks and
grease.
17. Apply the machine to the work piece only when it is
switched on.
18. Keep your hands away from the rotating cutting disc.
19. When cutting metal, sparks are generated. Take care
that no persons are endangered. Because of the danger
of fire, no combustible materials should be located in
the vicinity (spark flying zone).
20. Blocking of the cutting disc leads to a jerking
reaction of the machine. In this case, switch off the
machine immediately.
21. Do not ram the cutting disc with force into the work
piece or apply too much pressure when using the
machine. Avoid especially the catching of the cutting
disc when working on corners, sharp edges, etc. When
the cutting disc is damaged due to misuse, it may
develop cracks that could lead to bursting without
warning.
22. Avoid overloading the motor especially when
working with large work pieces. When cutting, apply
only light pressure to the handle.
23. Observe the dimensions of the cutting disc. The
hole diameter must fit on the tool spindle or the adapter
without play.
24. Do not apply sideways pressure to the cutting disc.
25. Observe the instructions of the manufacturer for the
mounting and usage of the cutting disc.
26. Caution! The cutting disc continues to run after the
machine is switched off.
27. Actuate the spindle locking only when the cutting
disc is at a standstill.
28. The cutting disc becomes very hot while working;
never take hold of it before it has cooled.
29. Save these instructions. Refer to them frequently
and use them to instruct others who may use this tool. If
someone borrows this tool, make sure they have these
instructions.
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:
a) Lead from lead-based paint
b) Crystalline silica from bricks and cement and other
masonry products
c) Arsenic and chromium from chemically-treated
lumber
Your risk to these exposures varies, depending on how
often you do this type of work. To reduce your exposure
to these chemicals:
a) Work in a well ventilated area
b) Work with approved safety equipment, such as those
dust masks that are specifically designed to filter out
microscopic particles.
THE LABEL ON YOUR TOOL MAY INCLUDE THE FOLLOWING
SYMBOLS:
V -----------------------Volts
A -----------------------Amperes
Hz ----------------------Hertz
n0 ----------------------No load speed
~ ------------------------ Alternating current
.../min ---------------- Revolutions or reciprocation per
minute
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SYMBOLES
Read the manual
Warning
Do not expose to rain or water
Do not burn
Wear ear protection, wear eye protection,
wear dust mask
TECHNICAL SPECIFICATIONS
Rated voltage
Rated current
No load speed
Blade size
Table size
Work clamp adjustment
Weight
120V ~ 60Hz
15A
3500/min
14”
18-11/32” x 9-3/4”
30°Left/45°Right
39.6lbs
OPERATING
1. WHEEL
1. Be sure the tool is disconnected from the power source.
2. Raise the tool to its full open position and rotate the lower
wheel guard upward (Fig A).
3. Push in the shaft lock lever (Fig B) and rotate the wheel until
the shaft lock lever engages, locking the wheel in place.
4. While holding the shaft lock lever in place, use the
supplied spanner and loosen the hex head bolt by rotating it
counterclockwise. Remove the hex head bolt, washer, outside
flange, and abrasive wheel. (Fig C)
NOTE: The inside flange is held in place by a spring
clip and inner washer onto the wheel arbor. Do not
remove these components. Removal is not required
for wheel changes.
2. NEW WHEEL INSTALLATION
a) Be sure the tool is disconnected from the power source.
b) Inspect the replacement wheel for defects such as cracks,
chipping, and correct speed rating. If defects are found or the
speed rating is not greater than 3500r/min, discard the wheel
and select another.
c) Remove any debris from the inside flange and inner washer.
Position the new abrasive wheel over the inner washer and
against the inside flange.
d) Clean and align the outside flange to the wheel arbor, then
slide it onto the arbor until it rests flush against the abrasive
wheel.
e) Insert the hex head bolt into the threaded end of the wheel
arbor and rotate it in a clockwise direction until snug. Then
depress the shaft lock lever to prevent the shaft from rotating.
Use the supplied spanner to securely tighten the hex head bolt
to hold the abrasive wheel firmly in place.
f) Return the wheel guard to its lowest position.
WARNING! Do not overtighten the hex head bolt.
Overtightening can cause the new wheel to crack,
resulting in premature failure and possible serious personal
injury.
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WARNING! Be sure to check the position of the machine
arm adjustable depth stop to ensure the new wheel does
not cut into the work surface beneath the base when the saw
arm is fully lowered. Failure to heed this warning can result in
serious personal injury.
3. ADJUSTABLE STATIONARY VICE
The adjustable stationary vice is located at the rear of your cut
off machine. This vice can be rotated to attain cutting angles
from -30 to 45 degrees and moved rearward to allow greater
cutting widths.
WARNING! Always unplug the machine from the power
source before making adjustments or performing routine
maintenance. Failure to heed this warning can result in serious
personal injury.
4. CUTTING ANGLE ADJUSTMENT
To adjust the angle of cut:
a) Locate the two hex head bolts behind the vice fence (Fig D).
b) Using the supplied spanner, loosen both bolts.
c) Rotate the vice fence until the desired angle of cut is aligned
with the indicator groove in the machine base.
d) Check the angle of the vice fence to the abrasive wheel using
a protractor, bevel square, or a similar device.
e) Using the supplied spanner, securely tighten the two hex
head bolts holding the vice to the machine base.
5. MOVING THE STATIONARY VICE
To increase the width of cut of your cut off machine:
a) Locate the two hex head bolts behind the vice fence (Fig E).
b) Locate the threaded hole in the machine base directly behind
the vice base.
c) Using the supplied spanner, remove both hex head bolts
securing the vice to the cut off machine base.
d) Reposition the curved slot of the vice base with the most
rearward threaded hole in the machine base. Insert a hex head
bolt in this hole. DO NOT TIGHTEN.
e) Align the remaining vice bolt hole with the middle threaded
hole in the machine base and install a hex head bolt.
f) Check or adjust the cutting angle and securely tighten both
hex head bolts with the supplied spanner.
6. QUICK LOCK-RELEASE VICE
Your cut off machine is equipped with a quick lock-release vice
system as standard equipment. With this feature you are able
to open and close the vice quickly without repetitive turning of
the vice handle.
USING THE QUICK LOCK-RELEASE VICE (Fig F)
To loosen:
a) Slightly release tension on the vice by rotating the vice handle
counterclockwise 1/2 to 1 turn.
b) Lift up the quick lock-release lever and pull back on crank
handle to slide open the vice (Fig F).
To tighten:
a) Push the crank handle forward to slide the vice against the
work piece.
b) Push down on the quick lock-release lever to engage its
threads with vice screw.
c) Rotate the crank handle clockwise to tighten the vice against
the work piece.
7. ADJUSTABLE POSITIVE DEPTH STOP
As shown in Fig G, the adjustable depth stop is threaded into
the base of the machine at the rear. By raising and lowering
the depth stop bolt with a 12mm spanner you can control how
far the abrasive wheel travels when the machine handle is
depressed.
This feature is particularly useful:
To increase wheel travel as the abrasive wheel wears.
To “cinch-up” the machine’s handle against the transport chain
when moving the machine or during storage.
To limit travel of the abrasive wheel, especially useful after
installation of new abrasive wheel.
8. TRANSPORT CHAIN
The transport chain is attached to the machine base and
machine arm, behind the motor, and is only used for carrying
the cut off machine. Also attached to the machine arm is a
metal hook. To transport or store the cutoff machine, lower the
handle and loop one of the chain’s links over the hook. Move the
machine using the carrying handle (Fig H).
9. SWITCH
To start the tool, completely depress the trigger switch located
in the machine handle. (Fig I)
To stop the tool, release the trigger switch completely.
10. CUTTING
IMPORTANT SAFETY WARNING
Please ensue that the correct safety equipment is worn at all
times when using this product. Approved safety eye goggles
and heavy duty work gloves should be worn. The material to be
cut should be held firmly in the vice so it can not move during
the cutting operation and never place the operator’s hand on the
machine base while machine is in cutting operation.
a) Secure the tool in place to prevent machine movement or
tipping during the cutting procedure.
b) Firmly secure the material to be cut using the machines vice
(Fig J).
c) Start the machine by fully depressing the trigger switch
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