RHYNO RWC-60 User manual

[1]
RHYNO 18V 5” Angle Grinder
-
OPERATOR’S MANUAL - USA
TO RE UCE THE RISK OF INJURY, USERS MUST REA AN UN ERSTAN
OPERATOR’S MANUAL.
Rev A 4/1/2017
Catalog No: RWC
-
60

[2]
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.
WARNING! To reduce the risk of
injury, read the instruction manual
If you have any questions or comments
about this or any RH NO tool, call us toll
free at:
844-25RH NO (844-257-4966)
RHYNO Windshield Cutter™ is a
Trademark of EnTheos esign Solutions,
LLC.
S MBOLOG
V ………………Volts
Hz ……………. Hertz
C ……………… Celcius
F ……………… Fahrenheit
AWG ……….. American Wire Gage
LED ………….. Light Emitting Diode
min …………. minutes
/min ……….. Per minute
bpm ………. Beats/min
ipm …………. Inches/min
RPM ………… rotations/min
sfpm ………. Surface feet/min
SPM ……….. Strokes/min
A ……………. Amperes
W …………… Watts
AC ………….. Alternating Current
DC ………….. Direct Current
……… Wear eye protection
……… Wear hearing protection
……… Wear respiratory protection
........ safety alert symbol
……… Read Manual
Definitions: Safety Guidelines
The definitions below describe the level of severity for each signal word. Please
read the manual and pay attention to these symbols.
DANGER: Indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided,
may result in property damage.
NOTICE: Indicates a practice not related to personal injury which, if not avoided,
may result in property damage.

[3]
RWC-60 18 0-8,000
RPM 4-5 in. RWC-16 120 0.5 18 RWC-41 5.0 18
RHYNO 18V 5" Grinder Tool
Tool
Catalog
Tool
Voltage
No Load
Speed
Wheel
iameter
Charger
Catalog
AC Input
Voltage
AC Input
Current
C
Output
Battery
Catalog
Battery
Capacity
Battery
Output

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GENERAL POWER TOOL SAFET
WARNINGS
WARNING! Read all safety warnings
and all instructions. Failure to follow the
warnings and instructions may result in
electric shock, fire and /or serious injury.
SAVE ALL WARNINGS AND
INSTRUCTIONS FOR FUTURE
REFERENCE
The term “power tool” in the warnings
refers to your mains-operated (corded) or
battery-operated (cordless) power tool.
1) WORK AREA SAFET
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust.
Power tools create sparks which may
ignite the dust or fumes.
c) Keep children and bystanders away
while operating a power tool.
istractions can cause you to lose
control.
2) ELECTRICAL SAFET
a) Power tool plugs must match the
outlet. Never modify the plug in any
way. Do not use any adapter plugs with
earthed (grounded) power tools.
Unmodified plugs and matching outlets
will reduce risk of electric shock.
b) Avoid body contact with earthed or
grounded surfaces such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric
shock if your body is earthed or
grounded.
c) Do not expose power tools to rain or
wet conditions. Water entering a power
tool will increase the risk of electric
shock.
d) Do not abuse the cord. Never use the
cord for carrying, pulling or unplugging
the power tool. Keep cord away from
heat, oil, sharp edges or moving parts.
amaged or entangled cords increase
the risk of electric shock.
e) When operating a power tool outdoors,
use an extension cord suitable for
outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric
shock.
f) If operating the power tool in damp
locations is unavoidable, use a Ground
Fault Circuit Interrupter (GFCI)
1 Housing
1
11
Button
1
2-1 Rotor
1
12
Pole Switch
1
2-2 Stator
1
13
ust Protector-Left
1
3 Switch
1
14
ust Protector-Right
1
4 Gear Box
1
15
Wheel Guard
1
5 Screw (T15)
4
16
Inner Flange
1
6 Nut
1
17
Outer Flange
1
7 Pinion Gear
1
18
Lock Nut Wrench
1
8 Ball Bearing
1
19
Screw (T10)
6
9 Gear Box Cover ©
1
20
Charger
1
10 Side Handle 1 21 Battery Pack 1
No. Part Name Qty.No. Part Name Qty.

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protected supply. Use of a GFCI reduces
the risk of electric shock.
3) PERSONAL SAFET
a) Stay alert, watch what you are doing
and use common sense when
operating a power tool. Do not use a
power tool while you are tired or under
the influence of drugs, alcohol or
medication. A moment of inattention
while operating power tools may result
in serious personal injury.
b) Use personal protective equipment.
Always wear eye protection.
Protective equipment such as safety
glasses, dust mask, protective gloves or
hearing protection used for appropriate
conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to power source and/or
battery pack, picking up or carrying the
tool. Carrying power tools with your
finger on the switch or energizing the
power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench
before turning the power tool on. A
wrench or a key left attached to a
rotating part of the power tool may
result in personal injury.
e) Do not overreach. Keep proper footing
and balance at all times. This enables
better control of the power tool in
unexpected situations.
f) Dress properly. Do not wear loose
clothing or jewelry. Keep your hair,
clothing and gloves away from moving
parts. Loose clothes, jewelry or long
hair can be caught in moving parts.
g) If devices are provided for the
connection of dust extraction and
collection facilities, ensure these are
connected and properly used. Use of
dust collection can reduce dust-related
hazards.
4) POWER TOOL USE AND CARE
a. Do not force the power tool. Use the
correct power tool for your application.
The correct power tool will do the job
better and safer at the rate for which it
was designed.
b. Do not use the power tool if the switch
does not turn on and off. Any power
tool that cannot be controlled with the
switch is dangerous and must be
repaired.
c. Disconnect the plug from the power
source and/or the battery pack from
the power tool before making any
adjustments, changing accessories, or
storing power tools. Such preventive
safety measures reduce the risk of
starting the power tool accidentally.
d. Store idle power tools out of the reach
of children and do not allow persons
unfamiliar with the power tool or these
instructions to operate the power tool.
Power tools are dangerous in the hands
of untrained users.
e. Maintain power tools. Check for
misalignment or binding of moving
parts, breakage of parts and any other
condition that may affect the power
tool’s operation. If damaged, have the
power tool repaired before use. Many
accidents are caused by poorly
maintained power tools.
f. Keep cutting tools sharp and clean.
Properly maintained cutting tools with
sharp cutting edges are less likely to
bind and are easier to control.
g. Use the power tool, accessories and
tool bits, etc. in accordance with these
instructions, taking into account the
working conditions and the work to be
performed. Use of the power tool for
operations different from those
intended could result in a hazardous
situation.
5) BATTER TOOL USE AND CARE
a) Recharge only with the charger
specified by the manufacturer. A

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charger that is suitable for one type of
battery pack may create a risk of fire
when used with another battery pack.
b) Use power tools only with specifically
designated battery packs. Use of any
other battery packs may create a risk of
injury and fire.
c) 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.
d) 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.
6) SERVICE
a) Have your power tool serviced by a
qualified repair person using only
identical replacement parts. This will
ensure that the safety of the power
tool is maintained.
SAFET INSTRUCTIONS FOR ALL
OPERATIONS
Safety Warnings Common for
Grinding, Sanding, Wire Brushing,
Polishing or Abrasive, Cutting-Off
Operations
a) This power tool is intended to function
as a grinder, sander, wire brush or cut-
off tool. Read all safety warnings,
instructions, illustrations and
specifications provided with this power
tool. Failure to follow all instructions
listed below may result in electric shock,
fire and/or serious injury.
b) Operations such as polishing are not
recommended to be performed with
this power tool. Operations for which
the power this power tool was not
designed may create a hazard and cause
personal injury.
c) Do not use accessories which are not
specifically designed and
recommended by the tool
manufacturer. Just because the
accessory can be attached to your power
tool, it does not assure safe operation.
d) The rated speed of the accessory must
be at least equal to the maximum speed
marked on the power tool. Accessories
running faster than their rated speed can
break and fly apart.
e) The outside diameter and the thickness
of your accessory must be within the
capacity rating of your power tool.
Incorrectly sized accessories cannot be
adequately guarded or controlled.
f) Threaded mounting of accessories must
match the grinder spindle thread. For
accessories mounted by flanges, the
arbor hole of the accessory must fit the
locating diameter of the flange.
Accessories that do not match the
mounting hardware of the power tool
will run out of balance, vibrate
excessively and may cause loss of
control.
g) Do not use a damaged accessory.
Before each use inspect the accessory
such as abrasive wheels for chips and
cracks, backing pad for cracks, tear or
excess wear, wire brush for loose or
cracked wires. If power tool or
accessory is dropped, inspect for
damage or install an undamaged
accessory. After inspecting and
installing an accessory, position
yourself and bystanders away from the
plane of the rotating accessory and run
the power tool at maximum no-load
speed for one minute. amaged

[7]
accessories will normally break apart
during this test time.
h) Wear personal protective equipment.
Depending on application, use face
shield, safety goggles or safety glasses.
As appropriate, wear dust mask,
hearing protectors, gloves and
workshop apron capable of stopping
small abrasive or workpiece fragments.
The eye protection must be capable of
stopping flying debris generated by
various operations. The dust mask or
respirator must be capable of filtrating
particles generated by your operation.
Prolonged exposure to high intensity
noise may cause hearing loss.
i) Keep bystanders a safe distance away
from work area. Anyone entering the
work area must wear personal
protective equipment. Fragments of
workpiece or of a broken accessory may
fly away and cause injury beyond
immediate are of operation.
j) Hold power tool by insulated gripping
surfaces only, when performing an
operation where the cutting accessory
may contact hidden wiring. Cutting
accessory contacting a “live” wire may
make exposed metal parts of the power
tool “live” and could give the operator
an electric shock.
k) Position the cord clear of the spinning
accessory. If you lose control, the cord
may be cut or snagged an your hand or
arm may be pulled into the spinning
accessory.
l) Never lay the power tool down until the
accessory has come to a complete
pinning stop. The spinning accessory
may grab the surface and pull the power
tool out of your control.
m) Do not run the power tool while
carrying it at your side. Accidental
contact with the spinning accessory
could snag your clothing pulling the
accessory into your body.
n) Regularly clean the power tool’s air
vents. The motor’s fan will draw the
dust inside the housing and excessive
accumulation of powdered metal may
cause electrical hazards.
o) Do not operate the power tool near
flammable materials. Sparks could
ignite these materials.
p) Do not use accessories that require
liquid coolants. Using water or other
liquid coolants may result in
electrocution or shock.
q) Do not use Type 11 (flaring cup) wheels
on this tool. Using inappropriate
accessories can result in injury.
r) Always use side handle. Tighten the
handle securely. The side handle should
always be used to maintain control of
the tool at all times.
s) When starting the tool with new or
replacement wheel, or a new or
replacement wire brush installed, hold
the tool in a well-protected area and let
it run for one minute. IF the wheel has
an undetected crack or flaw, it should
burst in less than one minute. If he wire
brush has loose wires, they will be
detected. Never start the tool with a
person in line with the wheel. This
includes the operator.
t) Use of accessories not specified in the
manual is not recommended and may be
hazardous. Use of power boosters that
would cause the tool to be driven at
speeds greater than its rated speed
constitutes misuse.
u) Use clamps or another practical way to
secure and support the workpiece to a
stable platform. Holding the work by
hand or against your body leaves it
unstable and may lead to loss of control.
v) Avoid bouncing the wheel or giving it
rough treatment. If this occurs, stop
the tool and inspect the wheel for
cracks or flaws.

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w) Always handle and store wheels in a
careful manner.
x) Do not operate this tool for long periods
of time. Vibration caused by the
operating action of this tool may cause
permanent injury to fingers, hands and
arms. Use gloves to provide extra
cushion, take frequent rest periods, and
limit daily time of use.
y) Air vents often cover moving parts and
should be avoided. Loose clothes,
jewelry or long hair can be caught in
moving parts.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched
or snagged rotating wheel, backing pad
brush or any other accessory. Pinching or
snagging causes rapid stalling of the
rotating accessory which in turn causes the
uncontrolled power tool to be forced in the
direction opposite of the accessory’s
rotation at the point of the binding.
For example, if an abrasive wheel is
snagged or pinched by the workpiece, the
edge of the wheel that is entering into the
pinch point can dig into the surface f the
material causing the wheel to climb out or
kick out. The wheel may either jump
toward or away from the operator,
depending on direction of the wheel’s
movement at the point of pinching.
Abrasive wheels may also break under
these conditions.
Kickback is the result of tool misuse and/or
incorrect operating procedures or
conditions and can be avoided by taking
proper precautions as given below:
a) Maintain a firm grip on the power tool
and position your body and arm to
allow you to resist kickback forces.
Always use auxiliary handle, if
provided, for maximum control over
kickback or torque reaction during
start up. The operator can control
torque reaction or kickback forces if
proper precautions are taken.
b) Never place you hand near the rotating
accessory. Accessory may kickback
over your hand.
c) Do not position your body in the area
where power tool will move if kickback
occurs. Kickback will propel the tool in
direction opposite to the wheel’s
movement at the point of snagging.
d) Use special care when working corners,
sharp edges etc. Avoid bounding and
snagging the accessory. Corners, sharp
edges or bouncing have a tendency to
snag the rotating accessory and cause
loss of control or kickback.
e) Do not attach a saw chain woodcarving
blade or toothed saw blade. Such
blades create frequent kickback and
loss of control.
Safety Warnings Specific for
Grinding and Abrasive Cutting-Off
Operations
a) Use only wheel types that are
recommended for your power tool and
the specific guard designed for the
selected wheel. Wheels for which the
power tool was not designed cannot be
adequately guarded and are unsafe.
b) The grinding surface of center
depressed wheels must be mounted
below the plane of the guard lip. An
improperly mounted wheel that
projects through the plane of the guard
lip cannot be adequately protected.
c) The guard must be securely attached to
the power tool and positioned for
maximum safety, so the least amount
of wheel is exposed towards the
operator. The guard helps to protect
the operator from broken wheel
fragments, accidental contact with

[9]
wheel and sparks that could ignite
clothing.
d) Wheels must be used only for
recommended applications. For
example: do not grind with the side of
cut-off wheel. Abrasive cut-off wheels
are intended for peripheral grinding,
side forces applied to these wheels may
cause them to shatter.
e) Always use undamaged wheel flanges
are of correct size and shape for your
selected wheel. Proper wheel flanges
support the wheel thus reducing the
possibility of wheel breakage. Flanges
for cut-off wheels may be different from
grinding wheel flanges.
f) Do not use worn down wheels from
larger power tools. Wheels intended
for larger power tools are not suitable
for the higher speed of a smaller tool
and may burst.
Additional Safety Warnings Specific
for Abrasive Cutting-Off Operations
a) Do not “jam” the cut-off wheel or
apply excessive pressure. Do not
attempt to make an excessive depth of
cut. Overstressing the wheel increases
the loading and susceptibility to
twisting or binding of the wheel in the
cut and the possibility of kickback or
wheel breakage.
b) Do not position your body in-line with
and behind the rotating wheel. When
the wheel, at the point of operation, is
moving away from your body, the
possible kickback may propel the
spinning wheel and the power tool
directly at you.
c) When wheel is binding or when
interrupting a cut for any reason,
switch off the power tool and old the
power tool motionless until the wheel
comes to a complete stop. Never
attempt to remove the cut-off wheel
from the cut while the wheel is in
motion otherwise kickback may occur.
Investigate and take corrective action to
eliminate the cause of wheel binding.
d) Do not restart the cutting operation in
the workpiece. Let the wheel reach
full speed and carefully reenter the
cut. The wheel may bind walk up or
kickback if the power tool is restarted in
the workpiece.
e) Support panels or any oversized
workpiece to minimize the risk of
wheel pinching and kickback. Large
workpieces tend to sag under their own
weight. Supports must be placed
under the workpiece near the line of cut
and near the edge of the workpiece on
both sides of the wheel.
f) Use extra caution when making a
“pocket cut” into existing walls or
other blind areas. The protruding
wheel may cut gas or water pies,
electrical wiring or objects that can
cause kickback.
Safety Warnings Specific for
Sanding Operations
a) Do not use excessively oversized
sanding disc paper. Follow
manufacturer’s recommendations,
when selecting sanding paper. Larger
sanding paper extending beyond the
sanding pad presents a laceration
hazard and may cause snagging, tearing
of the disc or kickback.
Safety Warnings Specific for Wire
Brushing Operations
a) Be aware that wire bristles are thrown
by the brush even during ordinary

[10]
operation. Do not overstress the wires
by applying excessive load to the
brush. The wire bristles can easily
penetrate light clothing and/or skin.
b) If the use of a guard is recommended
for wire brushing, do not allow any
interference of the wire wheel or brush
with the guard. Wire wheel or brush
may expand in diameter due to work
and centrifugal forces.
c) Safety goggles or safety glasses with
side shields and a full face shield
compliant with ANSI Z87.1 MUST be
worn by the operator and others that
are within 50’ (15.2m) of the use of this
product.
Additional Safety Information
WARNING: ALWA S use safety
glasses. Everyday eyeglasses are NOT
safety glasses. Also use face or dust mask
if cutting operation is dusty. ALWAYS
WEAR CERTIFIE SAFETY EQUIPMENT:
•ANSI Z87.1 eye protection (CAN/CSA
94.3),
•ANSI S12.6 (S3.19) hearing protection,
•NIOSH/OSHA/MSHA respiratory
protection.
WARNING: Some dust created by
power sanding, sawing, grinding, drilling,
and other construction activities contains
chemicals known to the State of California
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 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.
•Avoid prolonged contact with dust
from power sanding, sawing, grinding,
drilling, and other construction
activities. Wear protective clothing
and wash exposed areas with soap and
water. Allowing dust to get into your
mouth, eyes, or lay on the skin may
promote absorption of harmful
chemicals.
WARNING: Use of this tool can
generate and/or disperse dust, which may
cause serious permanent respiratory or
other injury. Always use NIOSH/OSHA
approved respiratory protection
appropriate for the dust exposure. ire
particles away from face and body.
WARNING: Always wear proper
personal hearing protection that conforms
to ANSI S12.6 (S3.19) during use. Under
some conditions and duration of use, noise
from this product may contribute to hearing
loss.
CAUTION: When not in use, place tool
on its side on a stable surface where it will
not cause a tripping or falling hazard.
Some tools with large battery packs will
stand upright on the battery pack but may
be easily knocked over.
•Air vents often cover moving parts and
should be avoided. Loose clothing,
jewelry or long hair can be caught in
moving parts.

[11]
BATTER PACKS AND CHARGERS
The battery pack is not fully charged out of
the package. Before using the battery pack
and charger, read the safety instructions
below and then follow charging procedures
outlined. When ordering replacement
battery packs, be sure to include the
catalog number and voltage. Your tool
uses a RHYNO charger. Be sure to read all
safety instructions before using your
charger. Consult the chart at the end of
this manual for compatibility of chargers
and battery packs.
READ ALL INSTRUCTIONS
Important Safety Instructions for
All Battery Packs
WARNING: Read all safety warnings
and all instructions for the battery pack,
charger and power tool. Failure to follow
the warnings and instructions may result in
electric shock, fire and/or serious injury.
•Do not charge or use the battery pack in
explosive atmospheres, such as in the
presence of flammable liquids, gases or
dust. Inserting or removing the battery
pack from the charger may ignite the
dust or fumes.
•NEVER force the battery pack into the
charger. O NOT modify the battery
pack in any way to fit into a non-
compatible charger as battery pack
may rupture causing serious personal
injury. Consult the chart at the top of
page 3 for compatibility of battery packs
and chargers.
•Charge the battery packs only in
designated RHYNO chargers.
•DO NOT splash or immerse in water or
other liquids.
•Do not store or use the tool and battery
pack in locations where temperatures
may reach or exceed 104°F (40°C) (such
as outside sheds or metal buildings in
summer. For best life, store battery
pack in a cool, dry location.
NOTE: Do not store the battery packs in a
tool with the trigger switch locked on.
Never tape the trigger switch in the ON
position.
•Do not incinerate the batter pack even
if it is severely damaged or is
completely worn out. The battery pack
can explode in a fire. Toxic fumes and
materials are created when lithium ion
battery packs are burned.
•If battery contents come into contact
with the skin, immediately wash area
with mild soap and water. If battery
liquid gets into the eye, rinse water over
the open eye for 15 minutes or until
irritation ceases. If medical attention is
needed the battery electrolyte is
composed of a mixture of liquid organic
carbonates and lithium salts.
•Contents of opened battery cells may
cause respiratory irritation. Provide
fresh air. If symptoms persist, seek
medical attention.
WARNING: Burn hazard. Battery liquid
may be flammable if exposed to spark or
flame.
WARNING: Fire hazard. Never attempt
to open the battery pack or any reason. If
the battery pack case is cracked or
damaged, do not insert into the charger. o
not crush, drop or damage the battery pack.
o not use a battery pack or charger that
has received a sharp blow, been dropped,
run over or damaged in any way (e.g.,
pierced with nail, hit with a hammer,
stepped on). amaged battery packs
should be returned to the service center for
recycling.
Transportation

[12]
WARNING: Fire hazard. Do not store
or carry the battery pack so that metal
objects can contact exposed battery
terminals. For example, do not place the
batter pack in aprons, pockets, tool boxes,
product kit boxes, drawers, etc., with loose
nails, screws, keys, etc. Transporting
battery packs can possibly cause fires if the
battery terminals inadvertently come into
contact with conductive materials such as
keys, coins, hand tools, etc. The US
epartment of Transportation Hazardous
Material Regulations (HMR) actually
prohibit transporting battery packs in
commerce or on airplanes in carry-on
baggage UNLESS they are properly
protected from sort circuits. So when
transporting individual battery packs, make
sure that the battery terminals are
protected and well insulated from materials
that could contact them and cause a short
circuit.
Fuel Gage Battery Packs
RHYNO Battery Packs or tools include a fuel
gage which consists of three green LE
lights that indicate the level of charge
remaining in the battery pack.
The fuel gage is an indication of
approximate levels of charge remaining in
the battery pack according to the following
indicators:
To actuate the fuel gage, press and hold the
fuel gage button. A combination of three
green LE lights will illuminate designating
the level of charge left. When the level of
charge in the battery pack is below the
usable limit, the fuel gage will not illuminate
and the battery pack will need to be
recharged.
NOTE: The fuel gage is only an indication of
the charge left on the battery pack. It does
not indicate tool functionality and is subject
to variation based on product components,
temperature and end-user application.
Important Safety Instructions for
All Battery Chargers
WARNING: Read all safety warnings
and all instructions for the battery pack,
charger and power tool. Failure to follow
the warnings and instructions may result in
electric shock, fire and/or serious injury.
•DO NOT attempt to charge the battery
pack with any charges other than the
ones in this manual. The charger and
battery pack are specifically designed to
work together.
•These chargers are not intended for any
uses other than charging RH NO
rechargeable battery packs. Any other
uses may result in risk of fire, shock, or
electrocution.
•Do not expose the charger to rain or
snow.

[13]
•Pull by the plug rather than the cord
when disconnecting the charger. This
will reduce the risk of damage to the
electric plug and cord.
•Make sure that the cord is located so
that it will not be stepped on, tripped
over or otherwise subjected to damage
or stress.
•Do not use an extension cord unless it
is absolutely necessary. Use of a cord
suitable for outdoor use reduces the risk
of electric shock.
•An extension cord must have adequate
wire size or AWG for safety. The smaller
the gage number of the wire, the greater
the capacity of the cable, that is, 16 gage
has more capacity than 18 gage. An
undersized cord will cause a drop in line
voltage resulting in loss of power and
overheating. When using more than
one extension to make up the total
length, be sure each individual extension
contains at least the minimum wire size.
The following table shows the correct
size to use depending on cord length and
nameplate ampere rating. If in doubt,
use the next heavier gage. The lower
the gage number, the heavier the cord.
•Do not place any object on top of the
charger or place the charger on a soft
surface that might block the ventilation
slots and result in excessive internal
heat. Place the charger in a position
away from any heat source. The charger
is ventilated through slots in the sides of
the housing.
•Do not operate the charger with a
damaged cord or plug.
•Do not operate the charger if it has
received a sharp blow, been dropped or
otherwise damaged in any way. Take it
to an authorized service center.
•Do not disassemble the charger; take it
to an authorized service center when
service or repair is required. Incorrect
reassembly may result in a risk of
electric shock, electrocution or fire.
•Disconnect the charger from outlet
before attempting any cleaning. This
will reduce the risk of electric shock.
Removing the battery pack will not
reduce this risk.
•NEVER attempt to connect 2 chargers
together.
•The charger is designed to operate on
standard 120V/220V household
electrical power. Do not attempt to use
it on any other voltage.
WARNING: Shock hazard. o not allow
any liquid to get inside the charger. Electric
shock may result.
WARNING: Burn hazard. o not
submerge the batter pack in any liquid or
allow any liquid to enter the battery pack.
Never attempt to open the battery pack for
any reason. If the plastic housing of the
battery pack breaks or cracks, return to a
service center for recycling.
CAUTION: Burn hazard. To reduce the
risk of injury, charge only RHYNO
rechargeable battery packs. Other types of
battery packs may overheat and burst
resulting in personal injury and property
damage.
NOTICE: Under certain conditions, with the
charger plugged into the power supply, the
charger can be shorted by foreign material.
Foreign material of a conductive nature,
25 (7.6) 50 (15.2)
100 (30.5)
150 (45.7)
50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
More
Than
Not More
Than
0 6 18 16 16 14
6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not recommended
Minimum Gage for Cord Sets
Volts
120V
220V
Total Length of Cord in Feet (meters)
American Wire Gage

[14]
such as, but not limited to, grinding dust,
metal chips, steel wool, aluminum foil or
any buildup of metallic particles should be
kept away from the charger cavities.
Always unplug the charger from the power
supply when there is not battery pack in the
cavity. Unplug the charger before
attempting to clean.
Charging a Battery Pack
NOTICE: To ensure maximum performance
and life of lithium-ion battery packs, charge
the battery pack fully before first use.
1) WHEN TO CHARGE BATTER PACK
a. The fuel gage on the battery pack
indicates the current battery capacity.
If battery pack is less than 100% or 3
green bars, battery pack can be charged
to full capacity.
b. Remove the battery pack from the tool
for charging when needed. RHYNO
Lithium-ion battery packs do not
develop “memory” when charged after
only a partial discharge. It is not
necessary to run down the battery pack
before placing it on the charger.
c. You can “top off” each battery pack at
any time or at any level of battery
charge as needed.
d. The only time that it is necessary to
charge a battery pack is if it has reached
the end of its charge. To signal the end
of its charge, power to the tool will stop.
2) CHARGING A BATTER PACK
a. Align the battery pack with the bay and
slide the battery pack into the charger as
far as possible. The red LE will indicate
charging is ongoing.
b. After inserting the battery pack fully
into the charger slot, the LE will
indicate RE while charging.
c. When charging is complete, the LE will
indicate GREEN.
d. If the battery pack or charger is out of the
normal temperature range of 32°F-113°F
(0°-45°C) the LE will indicate RE &
GREEN.
e. A fully discharged battery pack with an
internal temperature in the normal
range will charge in about 15-20
minutes. Heavily cycled batteries may
take longer to completely charged.
NOTICE: Hot or cold batteries will take
longer to charge.
NOTICE: Inverters or generators rated to
100 watts or higher can be used to power
charger.
3) CLEANING
Clean out dust and debris from charger
vents and electrical contacts by blowing
with compressed air. Use only mild soap
and a damp cloth to clean the battery pack
and charger, keeping away from the
electrical contacts. Certain cleaning agents
and solvents are harmful to plastics and
other insulted parts. Some of these include
gasoline, turpentine, lacquer thinner, paint
thinner, chlorinated cleaning solvents,
ammonia and household detergents
containing ammonia. Never use

[15]
flammable or combustible solvents around
batteries, charger or tools.
4) REPAIRS
The charger has no serviceable parts.
Hot/Cold Battery Pack Delay
When the charger detects a battery pack
that is too hot or too cold, it automatically
starts a Hot/Cold Pack elay, suspending
charging until the batty pack has reached an
appropriate temperature. The charger then
automatically switches to the pack charging
mode. This feature ensures maximum
battery pack life.
A cold battery pack will charge at a slower
rate than a warm battery pack. The battery
pack will charge at that slower rate
throughout the entire charging cycle and
will not return to maximum charge rate
even if the battery pack warms.
Lithium-Ion Battery Pack Only
Li-Ion tools are designed with an Electronic
Protection System that will protect the
battery pack against overloading,
overheating or deep discharge. The tool will
automatically turn off if the Electronic
Protection System engages. If this occurs,
place the Li-Ion battery pack on the charger
until it if fully charged.
ASSEMBL AND ADJUSTMENTS
WARNING: To reduce the risk of
serious personal injury, turn unit off and
remove the battery pack before making
any adjustments or removing /installing
attachments or accessories. An accidental
start-up can cause injury.
Attaching Side Handle
The side handle can be fitted to either side
of the gear case in the threaded holes.
Before using the tool, check that the
handle is tightened securely.
Rotating the Gear Case
To improve operator comfort, the gear
case can be rotated 90° in either direction
for cutting operations.
1) isconnect the battery pack.
2) Remove the inner flange, outer flange,
guard and handle.
3) Remove the 4 case screws (T15).
4) Without separating the gear case from
the motor housing, rotate gear case 90°
in either direction.
5) Replace the 4 gear case screws (T15)
and tighten to 12.5 in-lbs torque.
Overtightening could cause screws or
gear case to strip.
6) Replace handle, guard and flanges as
required or desired.

[16]
NOTE: If the gear case and motor housing
become separated by more than 1/8”
(3.17m), the tool must be serviced and rea-
assembled by a RHYNO service center.
Failure to have the tool serviced may cause
motor and bearing failure.
Guards
CAUTION: Guards must be used with
all grinding wheels, cutting wheels,
sanding flap discs, wire brushes, and wire
wheels. The tool may be used without a
guard only when sanding with
conventional sanding discs. Refer to Figure
A to see guards provided with the unit.
Some applications may require purchasing
the correct guard from your local dealer or
authorized service center.
NOTE: Edge grinding and cutting can be
performed with Type 27 wheels designed
and specified for this purpose; ¼”
(6.35mm) thick wheels are designed for
surface grinding while thinner Type 27
wheels need to be examined for the
manufacturer’s label to see if they can be
used for surface grinding or only edge
grinding/cutting. A Type A 1/41 guard
must be used for any wheel where surface
grinding is forbidden. Cutting can also be
performed by using a Type 1/41 wheel and
a Type 1/41 guard.
Unscrew and rotate wheel guard to the
desired position ensuring that the guard is
always placed between the spindle and the
operator.
Tighten guard screw securely.
Flanges and Wheels
WARNING: To reduce the risk of
serious personal injury, turn unit off and
disconnect battery pack from tool before
making any adjustments or removing or
installing attachments or accessories. An
accidental start-up can cause injury.
Mounting Non-Hubbed Wheels
WARNING: Failure to properly seat
the flange/clamp/nut wheel could result in
serious injury (or damage to the tool or
wheel).
CAUTION: Included flanges must be
used with depressed center Type 27
grinding wheels and Type 1/41 and Type
27/42 cutting wheels. See the Accessories
Chart for more information.
WARNING: A closed, two-sided
cutting wheel guard is required when using
cutting wheels. Cutting wheels inclue
diamond wheels and abrasive discs.
Abrasive cutting wheels for metal and
concrete use are available. iamond
blades for concrete cutting can
CAUTION: Included flanges must be
used with all non-hubbed accessories
except conventional sanding discs.
WARNING: Use of damaged flange or
guard or failure to use proper flange and

[17]
guard can result in injury due to wheel
breakage and wheel contact. See the
Accessories Chart for more information.
1) Install the unthreaded inner flange on
spindle with the raised section (pilot)
facing the wheel as shown.
2) Place wheel against the inner flange,
centering the wheel on the raised
section (pilot) of the inner flange.
3) While depressing the spindle lock
button and with the hex depressions
facing away from the wheel, thread the
outer flange (locking) on spindle so that
the lugs engage the two slots in the
spindle.
4) While depressing the spindle lock
button, tighten the outer flange with a
wrench.
5) To remove the wheel, depress the
spindle lock button and loosen the
threaded outer flange with a wrench.
Mounting Sanding Backing Pads
NOTE: Use of a guard with sanding discs
that use backing pads, often called fiber
resin discs, is not required. Since a guard is
not required for these accessories, the
guard may or may not fit correctly.
WARNING: Failure to properly seat
the flange/clamp/nut wheel could result in
serious injury (or damage to the tool or
wheel).
WARNING: A proper guard must be
reinstalled for grinding wheel, cutting
wheel, sanding flap disc, wire brush or wire
wheel applications after sanding
applications are complete.
1) Remove the inner flange.
2) Place or appropriately thread backing
pad on the spindle.
3) Place sanding disc on the backing pad.
4) While depressing the spindle lock,
thread clamp nut on spindle, piloting
the raised hub on the clamp nut into the
center of sanding disc and backing pad.
5) Tighten the clamp nut by hand. Then
depress the spindle lock button while
turning the sanding disc until the
sanding disc and clamp nut are snug.
6) To remove the wheel, grasp and turn
the backing pad and sanding pad while
depressing the spindle lock button.
Mounting and Removing Hubbed
Wheels
Threaded
Clamp Nut
Backing
Pad
Sanding
isk

[18]
WARNING: Failure to properly seat
the flange/ clamp nut/ wheel could result
in serious injury (or damage to the tool or
wheel).
Hubbed wheels install directly on the
threaded spindle. Thread of accessory
must match thread of spindle.
1) Remove inner flange by pulling away
from tool.
2) Thread the wheel on the spindle by
hand.
3) epress the spindle lock button and use
a wrench to tighten the hub of the
wheel.
4) Reverse the above procedure to
remove the wheel.
NOTICE: Failure to properly seat the wheel
before turning the tool on may result in
damage to the tool or the wheel.
Mounting Wire Cup Brushes and
Wire Wheels
CAUTION: To reduce the risk of
personal injury, wear work gloves when
handling wire brushes and wheels. They
can become sharp.
CAUTION: To reduce the risk of
damage to the tool, wheel or brush must
not touch guard when mounted or while
in use. Undetectable damage could occur
to the accessory, causing wires to fragment
from accessory wheel or cup.
Wire cup brushes or wire wheels screw
directly on the grinder spindle without the
use of flanges. Use only wire brushes or
wheels provided with a threaded M14 hub.
A Type 27 guard is required when using
wire brushes and wheels.
1) Thread the wheel on the spindle by
hand.
2) epress spindle lock button and use a
wrench on the hub of the wire wheel or
brush to tighten the wheel.
3) To remove the wheel, reverse the
above procedure.
NOTICE: To reduce the risk of damage to
the tool, properly seat the wheel hub
before turning the tool on.
OPERATION
WARNING: To reduce the risk of
serious personal injury, turn unit off and
remove the battery pack before making
any adjustments or removing/ installing
attachments or accessories. An accidental
start-up can cause injury.
Installing and Removing the
Battery Pack
NOTE: For best results, make sure your
battery pack is fully charged.
To install the battery pack into the tool
handle, align the battery pack with the rails
inside the tool’s handle and slide it into the
handle until the battery pack is firmly
seated in the tool and ensure that it does
not disengage.
To remove the battery pack from the tool,
press the release button and firmly pull the
battery pack out of the tool handle. Insert
it into the charger as described in the
charger section of this manual.

[19]
Proper Hand Position
WARNING: To reduce the risk of
serious personal injury, ALWA S use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWA S hold
securely in anticipation of a
sudden reaction.
Proper hand position requires one hand on
the main handle and one hand on the side
handle.
Slide Switch
WARNING: Before using the tool,
check that the side handle is tightened
securely.
WARNING: Hold the side handle and
main handle of the tool firmly to maintain
control of the tool at start up and during
use and until the wheel or accessory stops
rotating. Make sure the wheel has come to
a complete stop before laying the tool
down.
1) To turn the tool on, slide the switch
towards the top of the tool. The tool will
run while the switch is in this position.
2) Turn the tool off by releasing the
bottom of the switch.
WARNING: Allow the tool to reach full
speed before touching tool to the work
surface. Lift the tool from the work surface
before turning the tool off.
Spindle Lock Button
The spindle lock button is provided to
prevent the spindle from rotating when
installing or removing wheels. Operate the
spindle lock button only when the tool is
turned off, the battery pack is removed,
and the wheel has come to a complete
stop.
NOTICE: To reduce the risk of damage to
the tool, do not engage the spindle lock
button while the tool is operating. amage
to the tool will result and attached
accessory may spin off possibly resulting in
injury.
To engage the lock, depress the spindle
lock button and rotate the spindle until you
are unable to rotate the spindle further.

[20]
Surface Grinding, Sanding and Wire
Brushing
CAUTION: Always use the correct
guard per the instructions in this manual.
To perform work on the surface of a
workpiece:
1) Allow the tool to reach full speed before
touching the tool to the work surface.
2) Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Material removal rate is
greatest when the tool operates at high
speed.
Maintain an appropriate angle between
the tool and work surface. Refer to the
chart according to particular function.
3) Maintain contact between the edge of
the wheel and the work surface.
a. If grinding, sanding with flap discs or
wire brushing move the tool
continuously in a forward and back
motion to avoid creating gouges in
the work surface.
b. If sanding with a backing pad, move
the tool constantly in a straight line to
prevent burning and swirling of
work surface.
NOTE: Allowing the tool to rest on the work
surface without moving will damage the
work piece.
4) Remove the tool from work surface
before turning tool off. Allow the tool to
stop rotating before laying it down.
CAUTION: Use extra care when
working over an edge, as a sudden sharp
movement of grinder may be experienced.
Precautions To Take When
Working on a Painted Workpiece
1) Sanding or wire brushing of lead based
paint is NOT RECOMMEN E due to
the difficulty of controlling the
contaminated dust. The greatest
danger of lead poisoning is to children
and pregnant women.
2) Since it is difficult to identify whether or
not a paint contains lead without a
chemical analysis, we recommend the
following precautions when sanding
any paint:
Personal safety
1) No children or pregnant women should
enter the work area where the paint
sanding or wire brushing is being done
until all cleanup is completed.
2) A dust mask or respirator should be
worn by all persons entering the work
area. The filter should be replaced daily
Function Angle
Grinding 20°- 30°
Sanding with Flap isc 5°- 10°
Sanding with Backing Pad 5°- 15°
Wire Brushing 5°- 10°
Angle <