Ryobi OBS1815 User manual

FRONT PAGE
OBS1815

2
Original Instructions
IMPORTANT!
It is essential that you read the instructions in this manual
before assembling, operating, and maintaining the
product.
Subject to technical modication.
Safety, performance, and dependability have been given top
priority in the design of your backpack sprayer.
INTENDED USE
The backpack sprayer is intended only for outdoor use in a
well-ventilated area.
The product should be used only in domestic application by
adults who have received adequate training on the hazards
and preventative measures to be taken while using the
product.
The product is designed for spraying consumer-grade home
and garden chemicals, such as insecticides, fungicides,
weed killers, and fertilizers. The product may also be used
to water plants.
Do not use the product for any other purpose.
GENERAL PRODUCT SAFETY WARNINGS
WARNING! 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, re 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) product or battery-operated (cordless)
product.
WORK AREA SAFETY
■Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
■Do not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
■Keep children and bystanders away while operating
a power tool. Distractions can cause you to lose control.
ELECTRICAL SAFETY
■Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk
of electric shock.
■Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges, and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
■Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
■Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool. Keep
cord away from heat, oil, sharp edges, or moving
parts. Damaged or entangled cords increase the risk of
electric shock.
■When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric
shock.
■If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
PERSONAL SAFETY
■Stay alert, watch what you are doing, and use
common sense when operating a power tool. Do not
use a power tool while you are tired or under the
influence of drugs, alcohol, or medication. A moment
of inattention while operating power tools may result in
serious personal injury.
■Use personal protective equipment. Always wear
eye protection. Protective equipment such as a 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
jewellery. Keep your hair and clothing away from
moving parts. Loose clothes, jewellery, 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.
■Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of a second.
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 switch is dangerous and must be repaired.
■Disconnect the plug from the power source and/
or remove the battery pack, if detachable, 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 and accessories. Check for
misalignment or binding of moving parts, breakage
of parts and any other condition that may affect the

3
Original Instructions
power tool’s operation. If damaged, have the power
tool repaired before use. Many accidents are caused
by poorly maintained power tools.
■Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
■Use the power tool, accessories and tool bits etc.
in accordance with these instructions, taking into
account the working conditions and the work to
be performed. Use of the power tool for operations
different from those intended could result in a hazardous
situation.
■Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
BATTERY TOOL USE AND CARE
■Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another battery pack.
■Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire.
■When battery pack is not in use, keep it away from
other metal objects, like paper clips, coins, keys,
nails, screws or other small metal objects, that can
make a connection from one terminal to another.
Shorting the battery terminals together may cause burns
or a fire.
■Under abusive conditions, liquid may be ejected from
the battery; avoid contact. If contact accidentally
occurs, flush with water. If liquid contacts eyes,
additionally seek medical help. Liquid ejected from
the battery may cause irritation or burns.
■Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or
risk of injury.
■Do not expose a battery pack or tool to fire or
excessive temperature. Exposure to fire or temperature
above 130°C may cause explosion.
■Follow all charging instructions and do not charge
the battery pack or tool outside the temperature
range specified in the instructions. Charging
improperly or at temperatures outside the specified
range may damage the battery and increase the risk of
fire.
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.
■Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorised service providers.
BACKPACK SPRAYER SAFETY WARNINGS
■Read the instructions carefully. Be familiar with all
controls and the proper use of the product.
■Always check for and repair leaks before using the
product.
■Thoroughly inspect both the inside and outside of the
product, and examine the components before each
use. Check for cracked and deteriorated hoses, leaks,
clogged nozzles, and missing or damaged parts. Have
damaged product repaired before use. Many accidents
are caused by poorly maintained products.
■Never use the product with defective guards or shields, or
without safety devices in place. Never use an incomplete
or modified product. The use of a defective, incomplete,
or modified product could result in a hazardous situation.
■Follow the chemical manufacturer’s instructions with
respect to protective equipment.
■Wear the following personal protective equipment when
operating the product to help reduce the risk of injury:
●face mask
●gloves
●safety footwear
●upper body protection
■Wear proper protective clothing and equipment when:
●filling the spray tank with spray materials
●spraying
●making adjustments
●draining and cleaning the spray tank
●changing spray materials
●servicing the product
■To reduce the risk of fire or explosion, do not spray
flammable liquids, such as gasoline.
■Do not spray where spark, flame, or other source of
ignition is present.
■The product shall be used only with plant protection
products approved by local/national regulatory
authorities for plant protection products for use with
backpack sprayers. Always follow the chemical
manufacturer’s instructions printed on their product
labeling for use, cleaning, and storage. Chemicals
should be stored out of the reach of children.
■Do not spray any material where the hazard is not
known.
■Immediately turn off the product and remove the battery
pack in the event of an accident or breakdown. Do not
operate the product again until it has been fully checked
by an authorised service centre.
■Do not spray in the direction of people or animals. Avoid
spraying on windy days. The spray materials can be
accidentally blown onto plants or objects that should not
be sprayed. Always spray downwind.
■To reduce the risk of accidents and damage to the
product, never operate with:
●flammable liquids
●viscous or sticky liquids
●caustic or corrosive chemicals
●liquids hotter than 50°C
■Do not use flammable solvents or abrasive cleaning
agents to clean the product.
■If there is no spray coming out from the nozzle or the
spray amount is decreased, the hose and wand system
may be blocked. Rinse and clean all parts of the hose
and wand system (spray gun, filter in tank, spray wand,
hose) with clean water.
■After long time storage or after winter, spray the product
with clean water. Check if there are any leakages or
cracks.
■Never blow through nozzles or other components by
mouth.
■Avoid contact with plant control chemicals. Immediately

4
Original Instructions
change clothing that are contaminated with plant control
chemicals.
WARNING! Keep spray materials away from eyes.
If spray materials come in contact with the eyes, wash
them immediately with clean water. If irritation persists,
immediately seek medical help.
ADDITIONAL SAFETY WARNINGS
■Never allow children, persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge, or people who are unfamiliar with these
instructions to use the product.
■Keep the area clear of all bystanders, children, and pets
while spraying.
■Be aware of any hazards presented by the spray
materials. Before using any pesticide or other spray
materials with the product, carefully read the label on the
original container, and follow the instructions.
■Ensure that the spray wand is securely connected
to the spray wand handle before using the product. If
necessary, use pliers to attach the spray wand to the
spray wand handle.
■Properly replace and tighten the spray tank cover after
pouring liquid into the spray tank.
■Use only consumer-grade water-based lawn and garden
chemicals.
■Do not use commercial-grade chemicals or chemicals
for commercial or industrial purposes.
■Do not use caustic (alkali) self-heating or corrosive
(acid) liquids with the product. These can corrode metal
parts or weaken the tank and hose.
■Do not leave residue or spray material in the spray tank
after using the product. Clean the product after each
use.
■Do not pour hot or boiling liquids into the spray tank.
These can weaken or damage the hose or spray tank.
■Do not overfill the tank.
■The spray area must be well-ventilated.
■Do not smoke, eat, or drink while using the product.
■Do not discharge spray materials directly against skin.
■Do not let the spray materials come in contact with skin.
If contact does occur, wash immediately with soap and
plenty of water.
■Aim the nozzle directly at the plants or objects you intend
to spray.
■Ensure that the spray materials are directed at an area
that will not be damaged by the spray materials.
■Electric shock hazard. Do not spray towards electrical
outlets.
■After every use, thoroughly wash your hands and
any area where skin has been exposed to the spray
materials.
■Remove the battery from the product before draining,
cleaning, or storing to avoid accidental starting.
ADDITIONAL BATTERY SAFETY WARNINGS
■To reduce the risk of fire, personal injury, and product
damage due to a short circuit, never immerse your tool,
battery pack or charger in fluid or allow fluid to flow inside
them. Corrosive or conductive fluids, such as seawater,
certain industrial chemicals, and bleach or bleach-
containing products, etc., can cause a short circuit.
■Charge the battery pack in a location where the ambient
temperature is between 10°C and 38°C.
■Store the battery pack in a location where the ambient
temperature is between 0°C and 40°C.
MAINTENANCE
■Use only original manufacturer’s replacement parts,
accessories, and attachments. Failure to do so can cause
possible injury, can contribute to poor performance, and
may void your warranty.
■Servicing requires extreme care and knowledge
and should be performed only by a qualified service
technician. Have the product serviced by an authorised
service centre only.
■To avoid serious personal injury, always remove
the battery pack from the product when cleaning or
performing any maintenance.
■After each use, check all parts of the product for leaks.
Return the product to an authorised service centre for
repair if necessary.
■You may make adjustments or repairs that are described
in this manual. For other repairs, contact an authorised
service centre.
CLEANING THE REFILLABLE CONTAINER
■Drain all chemical solutions from the refillable container
into a container approved for chemicals. Do not store the
chemicals in the refillable container.
■Use clean water to clean and rinse the refillable
container. A small amount of mild household detergent
may be added. It may be necessary to rinse the refillable
container more than once.
CLEANING THE PRODUCT
■Fill the tank about one-third full with clean water. A small
amount of mild household detergent may be added.
■Do not use flammable solvents or abrasive cleaning
agents to clean the product.
■Spray into a suitable container until the tank has been
emptied.
■Refill and repeat the procedure with clean water. It may
be necessary to rinse the tank more than once, then
drain again as directed above.
■Allow all parts to completely dry, then reinstall the tank
cap.
■Wipe the outside of the product with a clean, dry cloth.
DISPOSAL
■Never dispose of residual chemicals or contaminated
rinsing solutions in waterways, drains, sewers, street
gutters, or manholes.
■Dispose of residual chemicals, contaminated rinse
water, and used containers in accordance with local
waste disposal regulations.
TRANSPORTATION AND STORAGE
■Ensure that all parts are clean and dry. Follow the
procedure described in this manual.
■Stop the product and remove the battery pack before
storing or transporting.
■For transportation, secure the product against movement
or falling to prevent injury to persons or damage to the
product.

5
Original Instructions
■Store the product in a cool, dry, and well-ventilated area
that is inaccessible to children. Keep the product away
from corrosive agents such as garden chemicals and de-
icing salts. Do not store the product outdoors.
TRANSPORTING LITHIUM BATTERIES
Transport the battery in accordance with local and national
provisions and regulations.
Follow all special requirements on packaging and labelling
when transporting batteries by a third party. Ensure that
no batteries can come in contact with other batteries
or conductive materials while in transport by protecting
exposed connectors with insulating, non-conductive caps or
tape. Do not transport batteries that are cracked or leaking.
Check with the forwarding company for further advice.
SAFETY DEVICES
ON/OFF SWITCH
The on/o󰀨 switch is easily accessible while using the product
to turn the product on or o󰀨.
PRESSURE PROTECT SWITCH
The pressure protect switch turns on when the maximum
pressure is reached.
SYMBOLS ON THE PRODUCT
Safety alert
Read and understand all instructions
before operating the product. Follow all
warnings and safety instructions.
Waste electrical products should not
be disposed of with household waste.
Please recycle where facilities exist.
Check with your local authority or
retailer for recycling advice.
Wear eye protection.
Wear appropriate respiratory mask.
Do not expose to rain or damp
condition.
Wear non-slip, heavy-duty protective
gloves.
Wear non-slip safety footwear when
using the product.
Wear protective clothing.
Keep bystanders, especially children
and animals away from the work
area. Never spray in the direction of
bystanders.
SYMBOLS IN THIS MANUAL
Note
Warning

6
Know your product
OBS1815
Hose
Trigger
Lock-on latch
Spray wand
Tank
Shoulder strap
Battery door
Elbow
On/Off/
Variable knob
Tank lid
Basket filter
Operator’s manual
Cone spray
nozzle
Flat fan nozzle
OBS1815
Hose
Trigger
Lock-on latch
Spray wand
Tank
Shoulder strap
Battery door
Elbow
On/Off/
Variable knob
Tank lid
Basket filter
Operator’s manual
Cone spray
nozzle
Flat fan nozzle

7
Getting started
1
2
1
2
1
2
2
1
1
2
2
1
1
4
7
2
5
8 9
3
6
4
7
Always wear safety goggles or safety
glasses with side shields when
operating the product. Wear non-skid,
protective footwear that will protect
your feet and improve your footing on
slippery surfaces.
Insert the spray wand into the trigger
handle. Slide the nut onto the threaded
coupling and hand tighten securely.
Install either the at fan nozzle or cone
spray nozzle and tighten.
Loosen the tank lid and remove it from
the tank.
Fill the tank with the required amount
of liquid (up to 15L).
Place the tank lid back onto the tank
and tighten.
Raise the battery cover, and install
the battery pack. Make sure that the
latches on each side of the battery pack
click in place.
Wear the product on your back. Insert the harness buckle to the
harness latch until it clicks. Pull both
ends of the harness to tighten.

8
p.9
Operating the
product
Cleaning the
product
Installing the elbow
and nozzle
Storing the
product
p.11
p.13 p.15

9
Operation
1
2
1
2
3
OPERATING THE PRODUCT
WARNING: Do not smoke, eat, or drink
while using the product. Do not spray in the
direction of people or animals. Always spray
downwind.
1. Raise the battery cover, and install the
battery pack. Make sure that the latches
on each side of the battery pack click in
place.
2. Turn the on/off knob clockwise to turn on
the product.
3. Squeeze the trigger to start spraying.
NOTE: The lock-on feature can be used
when spraying for an extended period of time
or when covering a large area.
■To lock-on, squeeze the trigger and
slide the lock-on latch backward.
■To release the lock-on, squeeze the
trigger and slide the lock-on latch
forward.
NOTE: Make sure that the trigger is not
locked on before inserting the battery
pack into the sprayer.

10
Operation
4
4. Use the backpack sprayer with either
the cone spray nozzle (left) or flat fan
nozzle (right).
NOTE: The cone spray nozzle can be
adjusted from a stream to a scatter spray.
■For a scatter spray, turn the nozzle
clockwise.
■For a stream spray, turn the nozzle
counterclockwise.
NOTE: The at fan nozzle provides a fan
spray.

11
Operation
1
1
2
2
1
2
3
4
5
INSTALLING THE ELBOW AND
NOZZLE
1. Turn off the product.
2. Loosen and remove the installed nozzle.
3. Install and tighten the elbow.
4. Install either the flat fan nozzle (left) or
cone spray nozzle (right).
5. Install and tighten the nozzle.

12
Operation
NOTE: The cone spray nozzle can be
adjusted from a stream to a scatter spray.
■For a scatter spray, turn the nozzle
clockwise.
■For a stream spray, turn the nozzle
counterclockwise.
NOTE: The at fan nozzle provides a fan
spray.

13
Maintenance
1
3
2
1
1
2
2
H2O
1
H
2
O
H
2
O
2
3
1
2
3
4
5
CLEANING THE PRODUCT
1. Remove the battery pack. Raise the
battery cover then press the latches on
both sides to release the battery pack and
remove it from the product.
2. Remove the tank cover.
3. Drain the contents of the tank to a
suitable container.
4. Fill the spray tank about one-third full
with clean water. A small amount of mild
household detergent may be added.
Close the tank with the tank cover.
5. Install the battery pack. Make sure that
the latches on each side of the battery
pack click in place.

14
Maintenance
6
7
8
6. Turn on the product.
7. Squeeze the trigger to start the flow of
liquid.
NOTE: Spray until the tank has been
completely emptied.
8. Wipe the outside of the tank with a clean,
dry cloth.

15
Storage
1
3
2
1
2
3
20201105v1d1
STORING THE PRODUCT
1. Remove the battery pack. Raise the
battery cover then press the latches on
both sides to release the battery pack and
remove it from the product.
2. Attach the spray wand into the holder
until it snaps into place.
3. Store the product in a cool, dry, and
well-ventilated place that is inaccessible
to children. Keep the product away
from corrosive agents, such as garden
chemicals and de-icing salts. Do not store
the product outdoors.

PRODUCT SPECIFICATIONS
Backpack sprayer
Model OBS1815
Input 18 V
Tank capacity 15 L
Hose length 1475 mm
Pump type: Diaphragm pump
Spray valve: Integral grip lever
Dimension (WxLxH) 368 mm x 223 mm x 525 mm
Cone nozzle
Stream 600 ~ 1000 ml/min at 4.1~6.2 Bar
Scatter 1200 ~1800 ml/min at 2.4~3.4 Bar
Fan nozzle 1300 ~1700 ml/min at 1.7~2.4 Bar
Net weight 4.8 kg
Weight when full 21.5 kg
Noise emission level (in accordance with EN 62841-1)
A-weighted sound pressure
level at the operator’s
position
LpA = 62.5 dB (A)
Uncertainty K = 3.0 dB
A-weighted sound power
level
LwA = 71.7 dB (A)
Uncertainty K = 3.0 dB
Vibration level (in accordance with EN 62841-1)
Vibration total value ah = 0.3m m/s2 < 2.5m m/s2
Uncertainty K = 1.5 m/s2
BATTERY AND CHARGER
Model OBS1815
Compatible
battery packs
RB18L13, RB18L13Z, RB18L15, RB18L15A,
RB18L15B, RB1815C, RB18L20, RB18L20A,
RB1820C, RB18L25, RB18L25A, RB18L30,
RB18L30A, RB18L40,RB18L40A, RB1840C,
RB1840X, RB18L50, RB18L50A, RB18L60,
RB18L60A, RB18L90, RB18L90A
Compatible
chargers
BCL14181H, BCL14183H, BCS618, RC18627,
RC18627U, RC18150, RC18150U, RC18120,
RC18115, RC18118C, BCL1418IV
REPLACEMENT PARTS
Outlet lter 316757001
Inlet lter 541716001
Wand and nozzle assembly 313969003
NOTE: Visit your local special orders desk or contact RYOBI
Customer Service for replacement parts.
WARNING! The declared vibration total values and the
declared noise emission values given in this instruction
manual have been measured in accordance with a
standardised test and may be used to compare one tool with
another. They may be used for a preliminary assessment
of exposure.
The declared vibration and noise emission values represent
the main applications of the tool. However, if the tool is used
for di󰀨erent applications, used with di󰀨erent accessories,
or poorly maintained, the vibration and noise emission
may di󰀨er. These conditions may signicantly increase the
exposure levels over the total working period. An estimation
of the level of exposure to vibration and noise should take
into account the times when the tool is turned o󰀨 or when
it is running idle. These conditions may signicantly reduce
the exposure level over the total working period.
Identify additional safety measures to protect the operator
from the e󰀨ects of vibration and noise, such as maintaining
the tool and the accessories, keeping the hands warm (in
case of vibration), and organising work patterns.

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Imported by:
Techtronic Industries Australia Pty Ltd
31 Gilby Road, Mount Waverley, VIC 3149
Melbourne, Australia
Techtronic Industries N.Z. Limited
Unit C, 70 Business Parade South,
Highbrook, Auckland 2013, New Zealand
RYOBI is a trade mark of Ryobi Limited, and is used under license.
© 2021 Techtronic Cordless GP
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