BN Products BNR1841 User manual

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Operating Instructions
BNR1841
Hand Held
Drywall Sanding Machine
Please read this manual carefully before using this
machine to make sure you are familiar with all safety
and warning instructions.
BNR1841 Technical Manual.indd 10/18

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OPERATION INSTRUCTION
Machine Call-Outs
Please read this manual carefully before using
this machine to make sure you are familiar with
all safety and warning instructions.

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TECHNICAL SPECIFICATIONS
Model Number BNR1841
Voltage 120V~, 60Hz
Power 6A 720W
Rotation Speed 1500-2700 min-1
Round Sanding Pad.ø 7” (180mm)
Protection class Class II
Double Insulated
SAFETY
GENERAL SAFETY INSTRUCTIONS
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 these
instructions for future reference. The term “power
tool” in the warnings refers to your (corded) power tool.
1. 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.
2. 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 grounded surfaces such as
pipes, radiators, ranges and refrigerators. There is an
increased risk of electric shock if your body is ground-
ed.
• 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 exten-
sion cord suitable for outdoor use. Use of a cord suit-
able for outdoor use reduces the risk of electric shock.
3. PERSONAL SAFETY
• Stay alert, watch what you are doing and use com-
mon 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 inatten-
tion while operating power tools may result in serious
personal injury.
• Use personal protective equipment. Always wear eye
protection. Protective equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce personal
injuries.
• Prevent unintentional starting. Ensure the switch is
in the off-position before connecting to power source
and/or battery pack, picking up or carrying the tool.
Carrying power tools with your finger on the switch or
energising power tools that have the switch on invites
accidents.
• Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to a
rotating part of the power tool may result in personal
injury.
• Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool
in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry.
Keep your hair, clothing and gloves away from mov-
ing 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 dust-related hazards.
4. POWER TOOL USE AND CARE
• Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
• Do not use the power tool if the switch does not turn
it on and off. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or the
battery pack from the power tool before making any
adjustments, changing accessories, or storing power
tools. Such preventive safety measures reduce the risk
of starting the power tool accidentally.
• Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool
or these instructions to operate the power tool. Power
tools are dangerous in the hands of untrained users.
• Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tool’s opera-
tion. 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 main-
tained cutting tools with sharp cutting edges are less

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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 dif-
ferent from those intended could result in a hazardous
situation.
5. 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. Contact:
BN Products-USA • (800) 992-3833 • mail@bnproducts.
com • www.bnproducts.com
SAFETY INSTRUCTIONS FOR SANDERS
1) SAFETY INSTRUCTIONS FOR ALL OPERATIONS
a) This power tool is intended to function as a sander.
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) This power tool is not recommended for grinding, wire
brushing or cutting off operations.Operations for which
the 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 BN Products-USA. 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. Acces-
sories running faster than their rated speed can fly apart.
e) The outside diameter and the thickness of your acces-
sory must be within the capacity rating of your power tool.
Incorrectly sized accessories cannot be adequately guard-
ed or controlled.
f) The arbour size of wheels, flanges, backing pads or any
other accessory must properly fit the spindle of the power
tool. Accessories with arbour holes that do not match the
mounting hardware of the power tool will run out of bal-
ance, 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 pads for cracks, tear or excess wear,
wire brushes for loose or cracked wires. If the 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. Damaged acces-
sories will normally break apart during this test time.
h) Wear personal protective equipment. Depending on ap-
plication, use face shield, safety goggles or safety glasses.
As appropriate, wear dust mask, hearing protectors, gloves
and shop 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 protec-
tive equipment. Fragments of the workpiece or of a broken
accessory may fly away and cause injury beyond the im-
mediate area of operation.
j) Hold power tool by insulated gripping surfaces only,
when performing an operation where the sander may con-
tact hidden wiring or its own cord. 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 and 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 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 ac-
cumulation of powdersl may cause electrical hazards.
o) Do not operate the power tool near flammable materi-
als. Sparks could ignite these materials.
p) Do not use accessories that require liquid coolants. Us-
ing water or other liquid coolants may result in electrocu-
tion or shock.
2) KICKBACK AND RELATED WARNINGS
• Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other ac-
cessory. Pinching or snagging causes rapid stalling
of therotating 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 sanding disk is snagged or pinched
by the workpiece, the edge of the wheel that is enter-
ing into the pinch point can dig into the surface of the
material causing the wheel to climb out or kick out.
The wheel may either jump toward or away from the
operator, depending on the direction of the wheel’s
movement at the point of pinching.
• Kickback is the result of power tool misuse and/or in-
correct operating procedures or conditions and can be
avoided by taking proper precautions as given below.

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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 reactions or kickback
forces, if proper precautions are taken.
b) Never place your hand near the rotating accessory. The
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 the direction opposite to the wheel’s move-
ment at the point of snagging.
d) Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the sanding pad.
Corners, sharp edges or bouncing have a tendency to
snag the rotating accessory and cause loss of control or
kickback.
GENERAL
• This tool should not be used by people under the
age of 16 years
• This tool is not intended for use by persons (in-
cluding children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervi-
sion or instruction concerning use of the tool by a
person responsible for their safety
• Ensure that children do not play with the tool
• This tool is not suitable for wet sanding
• Always disconnect plug from power source before
making any adjustment or changing any accessory
OUTDOOR USE
When operating a power tool outdoors, use an
extension cord suitable for outdoor use. The use
of a cord suitable for outdoor use reduces the risk
of electric shock.
If operating a power tool in a damp location is
unavoidable, use a ground fault circuit interrupter
(GFCI) protected supply. Use of an GFCI reduces
the risk of electric shock.
BEFORE USE
• Before using the tool for the first time, it is recom-
mended you read the complete manual
• Always check that the supply voltage is the same as
the voltage indicated on the nameplate of the tool
• Do not work materials containing asbestos (asbestos
is considered carcinogenic)
• Dust from material such as paint containing lead,
some wood species, minerals and metal may be
harmful (contact with or inhalation of the dust may
cause allergic reactions and/or respiratory diseases
to the operator or bystanders); wear a dust mask and
work with a dust extraction device when operating.
Certain kinds of dust are classified as carcinogenic
(such as oak and beech dust) especially in conjunc-
tion with additives for wood conditioning; wear a dust
mask and work with a dust extraction device when
operating.
• Follow the dust-related national requirements for the
materials you want to work with.
• Use completely unrolled and safe extension cords with
a capacity of 15 Amps.
AFTER USE
After switching off the tool, never stop the rotation of the
accessory by a lateral force applied against it.
USE
Attaching auxiliary handle (Fig 2)
For reasons of safety the auxiliary handle must be as-
sembled when using the product.
• Screw the auxiliary handle clockwise in one of the
mounting threads
• Make sure the auxiliary handle (I) is securely fas-
tened.
Attaching and changing sanding disc (Fig 3)
Place the sanding disc (M) in the center of the sanding
pad (L) and press on. The holes in the sanding disc must
be in alignment with the extraction holes in the sanding
Pad.
Attaching and removing Dust bag Fig 4)
• - Align and attach the vacuum hose connector (O5)
onto the dust extraction outlet (G) all the way to stop
• - After operation, hold and pull the vacuum hose
connector (O5) off the dust extraction outlet (G) to
remove the vacuum hose (O4) / dust bag (O) from the
product.
Emptying Dust bag (Fig 5)
• Remove the vacuum hose (O4) with dust bag (O) from
the product, if necessary.
• Hold the dust bag (O) over a suitable trash bag.
• Pull the clasp (O2) off the dust bag (O) and empty it
into the trash bag (Fig. 5).
• Slide the clasp (O2) onto the rails on the dust bag (O)
and re-attach the vacuum hose (O4) and dust bag (O)
to the product.
Switching the machine on and off
• Turn on/off the drywall sander by switch (C)

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• Adjust the speed by turning the speed wheel (B), user
can choose different speeds for different sanding
surfaces.
• A higher setting is suitable for sanding with fine-
grained sanding papers to achieve a fine finishing.
• A lower setting is suitable for sanding with coarse-
grained sanding papers to clean plaster and water
stain from work surface.
• Use the Lock button (D) to keep the machine running
at the same speed as selected.
• Do not overload by excessive pressure.
Halo Lighting System
Push the LED switch (F) to position 1 to turn on the LED
and position O to turn off the LED.
Sanding can be difficult and time consuming due to
surface clarity that leads to repeat sanding when you
miss a spot. Newly design Halo system enables you to
work better and more efficient while sanding. The system
is designed and built with super-bright LEDs that are
positioned at the ultimate angle to provide you visibility
during inefficient lighting conditions. With this new func-
tion, you will not miss an uneven spot and finish your
work quicker.
Adjusting suction power (Fig 7)
• Adjust the suction power according to the intended
operation
• Turn the vacuum speed dial (H) clockwise to increase
the suction power.
• Turn the vacuum speed dial (H) anticlockwise to de-
crease the suction power
Guard segment (Fig 8)
The detachable guard segment shortens the distance be-
tween the wall / ceiling and the side of the sanding paper
/ sanding pad. Remove the guard segment when the work
surface is close to the other objects (e. g. wall, ceiling).
Detachable guard segment and rotated by 360°
The detachable guard segment allows close sanding be-
tween the wall / ceiling and the side of the sanding paper
/ sanding pad. Remove the guard segment when the work
is close to the other surfaces (e. g. wall, ceiling). Sanding
guard can be rotated by 360°, applying for different edges.
WARNING! Use the product without guard segment
only for sanding operation on work close to other
objects!
• Remove the guard segment (K1) from the guard (K).
• After operation, refit the segment (K1) onto the guard
(K ). Ensure the three points of segment (K1) press
into the right position
MAINTENANCE / SERVICE
• Store the tool in its protective case in a dry
and secure place, out of reach of children
• Always keep tool and cord clean (especially
ventilation slots).
• Do not attempt to clean ventilation slots by
inserting pointed objects through openings.
• Disconnect the plug before cleaning.
ENVIRONMENT
Do not dispose of electric tools with household waste
material. Tools that have reached the end of their life
should be collected separately and returned to an envi-
ronmentally compatible recycling facility.
BNR1841 includes sample sanding discs with this Drywall
Sander. You can order additional discs using the following
part numbers from your local supplier.
BN Products Sanding discs for BNR1841
7” (180mm)
Sanding discs for BNR1841
Part Number Sanding Grit Package Qty.
SDR7-60 60 Grit 10 Discs in a Pack
SDR7-80 80 Grit 10 Discs in a Pack
SDR7-100 100 Grit 10 Discs in a Pack
SDR7-120 120 Grit 10 Discs in a Pack
SDR7-150 150 Grit 10 Discs in a Pack
SDR7-180 180 Grit 10 Discs in a Pack
SDR7-240 240 Grit 10 Discs in a Pack
SDR7-400 400 Grit 10 Discs in a Pack
Sanding Pad for BNR1841
SP7-S Sanding Pad Soft (1.ea.)
(Comes with the tool)
BN Products-USA, LLC.
3450 Sabin Brown Road
Wickenburg, AZ 85390
www.bnproducts.com
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